1/* SPDX-License-Identifier: MIT */
  2
  3#ifndef __NOVA_DRM_H__
  4#define __NOVA_DRM_H__
  5
  6#include "drm.h"
  7
  8/* DISCLAIMER: Do not use, this is not a stable uAPI.
  9 *
 10 * This uAPI serves only testing purposes as long as this driver is still in
 11 * development. It is required to implement and test infrastructure which is
 12 * upstreamed in the context of this driver. See also [1].
 13 *
 14 * [1] https://lore.kernel.org/dri-devel/Zfsj0_tb-0-tNrJy@cassiopeiae/T/#u
 15 */
 16
 17#if defined(__cplusplus)
 18extern "C" {
 19#endif
 20
 21/*
 22 * NOVA_GETPARAM_VRAM_BAR_SIZE
 23 *
 24 * Query the VRAM BAR size in bytes.
 25 */
 26#define NOVA_GETPARAM_VRAM_BAR_SIZE	0x1
 27
 28/**
 29 * struct drm_nova_getparam - query GPU and driver metadata
 30 */
 31struct drm_nova_getparam {
 32	/**
 33	 * @param: The identifier of the parameter to query.
 34	 */
 35	__u64 param;
 36
 37	/**
 38	 * @value: The value for the specified parameter.
 39	 */
 40	__u64 value;
 41};
 42
 43/**
 44 * struct drm_nova_gem_create - create a new DRM GEM object
 45 */
 46struct drm_nova_gem_create {
 47	/**
 48	 * @handle: The handle of the new DRM GEM object.
 49	 */
 50	__u32 handle;
 51
 52	/**
 53	 * @pad: 32 bit padding, should be 0.
 54	 */
 55	__u32 pad;
 56
 57	/**
 58	 * @size: The size of the new DRM GEM object.
 59	 */
 60	__u64 size;
 61};
 62
 63/**
 64 * struct drm_nova_gem_info - query DRM GEM object metadata
 65 */
 66struct drm_nova_gem_info {
 67	/**
 68	 * @handle: The handle of the DRM GEM object to query.
 69	 */
 70	__u32 handle;
 71
 72	/**
 73	 * @pad: 32 bit padding, should be 0.
 74	 */
 75	__u32 pad;
 76
 77	/**
 78	 * @size: The size of the DRM GEM obejct.
 79	 */
 80	__u64 size;
 81};
 82
 83#define DRM_NOVA_GETPARAM		0x00
 84#define DRM_NOVA_GEM_CREATE		0x01
 85#define DRM_NOVA_GEM_INFO		0x02
 86
 87/* Note: this is an enum so that it can be resolved by Rust bindgen. */
 88enum {
 89	DRM_IOCTL_NOVA_GETPARAM		= DRM_IOWR(DRM_COMMAND_BASE + DRM_NOVA_GETPARAM,
 90						   struct drm_nova_getparam),
 91	DRM_IOCTL_NOVA_GEM_CREATE	= DRM_IOWR(DRM_COMMAND_BASE + DRM_NOVA_GEM_CREATE,
 92						   struct drm_nova_gem_create),
 93	DRM_IOCTL_NOVA_GEM_INFO		= DRM_IOWR(DRM_COMMAND_BASE + DRM_NOVA_GEM_INFO,
 94						   struct drm_nova_gem_info),
 95};
 96
 97#if defined(__cplusplus)
 98}
 99#endif
100
101#endif /* __NOVA_DRM_H__ */