DRM_IOCTL_NR
unsigned int nr = DRM_IOCTL_NR(cmd);
#define DRM_IOCTL32_DEF(n, f) [DRM_IOCTL_NR(n##32)] = {.fn = f, .name = #n}
unsigned int nr = DRM_IOCTL_NR(cmd);
[DRM_IOCTL_NR(ioctl)] = { \
unsigned int nr = DRM_IOCTL_NR(cmd);
unsigned int nr = DRM_IOCTL_NR(cmd);
unsigned int nr = DRM_IOCTL_NR(cmd);
unsigned int nr = DRM_IOCTL_NR(cmd);
unsigned int nr = DRM_IOCTL_NR(cmd);
[DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = { \