static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind) { IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus); IDEState *s = bus->ifs + dev->unit; Error *err = NULL; if (dev->conf.discard_granularity == -1) { dev->conf.discard_granularity = 512; } else if (dev->conf.discard_granularity && dev->conf.discard_granularity != 512) { error_report("discard_granularity must be 512 for ide"); return -1; } blkconf_blocksizes(&dev->conf); if (dev->conf.logical_block_size != 512) { error_report("logical_block_size must be 512 for IDE"); return -1; } blkconf_serial(&dev->conf, &dev->serial); if (kind != IDE_CD) { blkconf_geometry(&dev->conf, &dev->chs_trans, 65535, 16, 255, &err); if (err) { error_report_err(err); return -1; } } blkconf_apply_backend_options(&dev->conf); if (ide_init_drive(s, dev->conf.blk, kind, dev->version, dev->serial, dev->model, dev->wwn, dev->conf.cyls, dev->conf.heads, dev->conf.secs, dev->chs_trans) < 0) { return -1; } if (!dev->version) { dev->version = g_strdup(s->version); } if (!dev->serial) { dev->serial = g_strdup(s->drive_serial_str); } add_boot_device_path(dev->conf.bootindex, &dev->qdev, dev->unit ? "/disk@1" : "/disk@0"); return 0; }
static void scsi_generic_realize(SCSIDevice *s, Error **errp) { int rc; int sg_version; struct sg_scsi_id scsiid; if (!s->conf.blk) { error_setg(errp, "drive property not set"); return; } if (blk_get_on_error(s->conf.blk, 0) != BLOCKDEV_ON_ERROR_ENOSPC) { error_setg(errp, "Device doesn't support drive option werror"); return; } if (blk_get_on_error(s->conf.blk, 1) != BLOCKDEV_ON_ERROR_REPORT) { error_setg(errp, "Device doesn't support drive option rerror"); return; } /* check we are using a driver managing SG_IO (version 3 and after */ rc = blk_ioctl(s->conf.blk, SG_GET_VERSION_NUM, &sg_version); if (rc < 0) { error_setg_errno(errp, -rc, "cannot get SG_IO version number"); if (rc != -EPERM) { error_append_hint(errp, "Is this a SCSI device?\n"); } return; } if (sg_version < 30000) { error_setg(errp, "scsi generic interface too old"); return; } /* get LUN of the /dev/sg? */ if (blk_ioctl(s->conf.blk, SG_GET_SCSI_ID, &scsiid)) { error_setg(errp, "SG_GET_SCSI_ID ioctl failed"); return; } if (!blkconf_apply_backend_options(&s->conf, blk_is_read_only(s->conf.blk), true, errp)) { return; } /* define device state */ s->type = scsiid.scsi_type; DPRINTF("device type %d\n", s->type); switch (s->type) { case TYPE_TAPE: s->blocksize = get_stream_blocksize(s->conf.blk); if (s->blocksize == -1) { s->blocksize = 0; } break; /* Make a guess for block devices, we'll fix it when the guest sends. * READ CAPACITY. If they don't, they likely would assume these sizes * anyway. (TODO: they could also send MODE SENSE). */ case TYPE_ROM: case TYPE_WORM: s->blocksize = 2048; break; default: s->blocksize = 512; break; } DPRINTF("block size %d\n", s->blocksize); scsi_generic_read_device_identification(s); }