drm_agp_mode
#define DRM_IOCTL_AGP_ENABLE DRM_IOW( 0x32, struct drm_agp_mode)
typedef struct drm_agp_mode drm_agp_mode_t;
extern int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
struct drm_agp_mode mode)
int drm_agp_enable(struct drm_device * dev, struct drm_agp_mode mode)
struct drm_agp_mode *mode = data;
struct drm_agp_mode mode;