57  *  - GET_UNIQUE ioctl, implemented by drm_getunique is wrapped up in libdrm
59  *  - The libdrm drmSetBusid function is backed by the SET_UNIQUE ioctl. All
62  *    exclusively use by the SET_VERSION ioctl, because only drm 1.0 (which is
63  *    nerved) allowed userspace to set the busid through the above ioctl.
85  *    name returned by that ioctl. Note that SET_VERSION is not called, which
188 	 * Hollowed-out getclient ioctl to keep some dead old drm tests/tools  in drm_getclient()
372  * Setversion ioctl.
428  * drm_noop - DRM no-op ioctl implementation
429  * @dev: DRM device for the ioctl
430  * @data: data pointer for the ioctl
431  * @file_priv: DRM file for the ioctl call
435  * checks the result of the ioctl, but doesn't care about the action.
448  * drm_invalid_op - DRM invalid ioctl implementation
449  * @dev: DRM device for the ioctl
450  * @data: data pointer for the ioctl
451  * @file_priv: DRM file for the ioctl call
454  * functionality where we really don't want to allow userspace to call the ioctl
470  * Copy and IOCTL return string to user space
554 #define DRM_IOCTL_DEF(ioctl, _func, _flags)	\  argument
555 	[DRM_IOCTL_NR(ioctl)] = {		\
556 		.cmd = ioctl,			\
559 		.name = #ioctl			\
563 #define DRM_LEGACY_IOCTL_DEF(ioctl, _func, _flags)  DRM_IOCTL_DEF(ioctl, _func, _flags)  argument
565 #define DRM_LEGACY_IOCTL_DEF(ioctl, _func, _flags) DRM_IOCTL_DEF(ioctl, drm_invalid_op, _flags)  argument
568 /* Ioctl table */
730  * which define IOCTL for use by the display DRM master, but they all predate
737  * First you need to define the structure for your IOCTL in your driver private
750  * Then you need to define your IOCTL number, using one of DRM_IO(), DRM_IOR(),
756  * DRM driver private IOCTL must be in the range from DRM_COMMAND_BASE to
803  * drm_ioctl - ioctl callback implementation for DRM drivers
804  * @filp: file this ioctl is called on
805  * @cmd: ioctl cmd number
808  * Looks up the ioctl function in the DRM core and the driver dispatch table,
820 	const struct drm_ioctl_desc *ioctl = NULL;  in drm_ioctl()  local
840 		/* driver ioctl */  in drm_ioctl()
846 		ioctl = &dev->driver->ioctls[index];  in drm_ioctl()
848 		/* core ioctl */  in drm_ioctl()
852 		ioctl = &drm_ioctls[nr];  in drm_ioctl()
855 	drv_size = _IOC_SIZE(ioctl->cmd);  in drm_ioctl()
857 	if ((cmd & ioctl->cmd & IOC_IN) == 0)  in drm_ioctl()
859 	if ((cmd & ioctl->cmd & IOC_OUT) == 0)  in drm_ioctl()
866 		     file_priv->authenticated, ioctl->name);  in drm_ioctl()
869 	func = ioctl->func;  in drm_ioctl()
895 	retcode = drm_ioctl_kernel(filp, func, kdata, ioctl->flags);  in drm_ioctl()
900 	if (!ioctl)  in drm_ioctl()
902 			     "invalid ioctl: comm=\"%s\", pid=%d, dev=0x%lx, auth=%d, cmd=0x%02x, nr=0x%02x\n",  in drm_ioctl()
917  * drm_ioctl_flags - Check for core ioctl and return ioctl permission flags
918  * @nr: ioctl number
919  * @flags: where to return the ioctl permission flags
921  * This ioctl is only used by the vmwgfx driver to augment the access checks
926  * True if the @nr corresponds to a DRM core ioctl number, false otherwise.