periph_device_cookie
void (*set_capacity)(periph_device_cookie cookie, uint64 capacity,
void (*media_changed)(periph_device_cookie cookie, scsi_ccb *request);
status_t (*register_device)(periph_device_cookie cookie,
status = sSCSIPeripheral->register_device((periph_device_cookie)info,
(void (*)(periph_device_cookie, uint64, uint32, uint32))cd_set_capacity,
(void (*)(periph_device_cookie, scsi_ccb *))cd_media_changed
(void (*)(periph_device_cookie, uint64, uint32, uint32))das_set_capacity,
(void (*)(periph_device_cookie, scsi_ccb *))das_media_changed
status = sSCSIPeripheral->register_device((periph_device_cookie)info,
periph_register_device(periph_device_cookie periph_device,
periph_device_cookie periph_device;
status_t periph_register_device(periph_device_cookie periph_device,