RSM_IOCTL_TOPOLOGY
if (RSM_IOCTL_CMDGRP(cmd) == RSM_IOCTL_TOPOLOGY) {
#define RSM_IOCTL_TOPOLOGY_SIZE RSM_IOCTL_TOPOLOGY + 0x1
#define RSM_IOCTL_TOPOLOGY_DATA RSM_IOCTL_TOPOLOGY + 0x2