README: add Vulkan into the generic description

[piglit.git] / src / drm-uapi / drm.h

/*
 * Header for the Direct Rendering Manager
 *
 * Author: Rickard E. (Rik) Faith <faith@valinux.com>
 *
 * Acknowledgments:
 * Dec 1999, Richard Henderson <rth@twiddle.net>, move to generic cmpxchg.
 */

/*
 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
 * All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef _DRM_H_
#define _DRM_H_

#if   defined(__linux__)

#include <linux/types.h>
#include <asm/ioctl.h>
typedef unsigned int drm_handle_t;

#else /* One of the BSDs */

#include <stdint.h>
#include <sys/ioccom.h>
#include <sys/types.h>
typedef int8_t   __s8;
typedef uint8_t  __u8;
typedef int16_t  __s16;
typedef uint16_t __u16;
typedef int32_t  __s32;
typedef uint32_t __u32;
typedef int64_t  __s64;
typedef uint64_t __u64;
typedef size_t   __kernel_size_t;
typedef unsigned long drm_handle_t;

#endif

#if defined(__cplusplus)
extern "C" {
#endif

#define DRM_NAME        "drm"     /**< Name in kernel, /dev, and /proc */
#define DRM_MIN_ORDER   5         /**< At least 2^5 bytes = 32 bytes */
#define DRM_MAX_ORDER   22        /**< Up to 2^22 bytes = 4MB */
#define DRM_RAM_PERCENT 10        /**< How much system ram can we lock? */

#define _DRM_LOCK_HELD  0x80000000U /**< Hardware lock is held */
#define _DRM_LOCK_CONT  0x40000000U /**< Hardware lock is contended */
#define _DRM_LOCK_IS_HELD(lock)    ((lock) & _DRM_LOCK_HELD)
#define _DRM_LOCK_IS_CONT(lock)    ((lock) & _DRM_LOCK_CONT)
#define _DRM_LOCKING_CONTEXT(lock) ((lock) & ~(_DRM_LOCK_HELD|_DRM_LOCK_CONT))

typedef unsigned int drm_context_t;
typedef unsigned int drm_drawable_t;
typedef unsigned int drm_magic_t;

/*
 * Cliprect.
 *
 * \warning: If you change this structure, make sure you change
 * XF86DRIClipRectRec in the server as well
 *
 * \note KW: Actually it's illegal to change either for
 * backwards-compatibility reasons.
 */
struct drm_clip_rect {
        unsigned short x1;
        unsigned short y1;
        unsigned short x2;
        unsigned short y2;
};

/*
 * Drawable information.
 */
struct drm_drawable_info {
        unsigned int num_rects;
        struct drm_clip_rect *rects;
};

/*
 * Texture region,
 */
struct drm_tex_region {
        unsigned char next;
        unsigned char prev;
        unsigned char in_use;
        unsigned char padding;
        unsigned int age;
};

/*
 * Hardware lock.
 *
 * The lock structure is a simple cache-line aligned integer.  To avoid
 * processor bus contention on a multiprocessor system, there should not be any
 * other data stored in the same cache line.
 */
struct drm_hw_lock {
        __volatile__ unsigned int lock;         /**< lock variable */
        char padding[60];                       /**< Pad to cache line */
};

/*
 * DRM_IOCTL_VERSION ioctl argument type.
 *
 * \sa drmGetVersion().
 */
struct drm_version {
        int version_major;        /**< Major version */
        int version_minor;        /**< Minor version */
        int version_patchlevel;   /**< Patch level */
        __kernel_size_t name_len;         /**< Length of name buffer */
        char *name;       /**< Name of driver */
        __kernel_size_t date_len;         /**< Length of date buffer */
        char *date;       /**< User-space buffer to hold date */
        __kernel_size_t desc_len;         /**< Length of desc buffer */
        char *desc;       /**< User-space buffer to hold desc */
};

/*
 * DRM_IOCTL_GET_UNIQUE ioctl argument type.
 *
 * \sa drmGetBusid() and drmSetBusId().
 */
struct drm_unique {
        __kernel_size_t unique_len;       /**< Length of unique */
        char *unique;     /**< Unique name for driver instantiation */
};

struct drm_list {
        int count;                /**< Length of user-space structures */
        struct drm_version *version;
};

struct drm_block {
        int unused;
};

/*
 * DRM_IOCTL_CONTROL ioctl argument type.
 *
 * \sa drmCtlInstHandler() and drmCtlUninstHandler().
 */
struct drm_control {
        enum {
                DRM_ADD_COMMAND,
                DRM_RM_COMMAND,
                DRM_INST_HANDLER,
                DRM_UNINST_HANDLER
        } func;
        int irq;
};

/*
 * Type of memory to map.
 */
enum drm_map_type {
        _DRM_FRAME_BUFFER = 0,    /**< WC (no caching), no core dump */
        _DRM_REGISTERS = 1,       /**< no caching, no core dump */
        _DRM_SHM = 2,             /**< shared, cached */
        _DRM_AGP = 3,             /**< AGP/GART */
        _DRM_SCATTER_GATHER = 4,  /**< Scatter/gather memory for PCI DMA */
        _DRM_CONSISTENT = 5       /**< Consistent memory for PCI DMA */
};

/*
 * Memory mapping flags.
 */
enum drm_map_flags {
        _DRM_RESTRICTED = 0x01,      /**< Cannot be mapped to user-virtual */
        _DRM_READ_ONLY = 0x02,
        _DRM_LOCKED = 0x04,          /**< shared, cached, locked */
        _DRM_KERNEL = 0x08,          /**< kernel requires access */
        _DRM_WRITE_COMBINING = 0x10, /**< use write-combining if available */
        _DRM_CONTAINS_LOCK = 0x20,   /**< SHM page that contains lock */
        _DRM_REMOVABLE = 0x40,       /**< Removable mapping */
        _DRM_DRIVER = 0x80           /**< Managed by driver */
};

struct drm_ctx_priv_map {
        unsigned int ctx_id;     /**< Context requesting private mapping */
        void *handle;            /**< Handle of map */
};

/*
 * DRM_IOCTL_GET_MAP, DRM_IOCTL_ADD_MAP and DRM_IOCTL_RM_MAP ioctls
 * argument type.
 *
 * \sa drmAddMap().
 */
struct drm_map {
        unsigned long offset;    /**< Requested physical address (0 for SAREA)*/
        unsigned long size;      /**< Requested physical size (bytes) */
        enum drm_map_type type;  /**< Type of memory to map */
        enum drm_map_flags flags;        /**< Flags */
        void *handle;            /**< User-space: "Handle" to pass to mmap() */
                                 /**< Kernel-space: kernel-virtual address */
        int mtrr;                /**< MTRR slot used */
        /*   Private data */
};

/*
 * DRM_IOCTL_GET_CLIENT ioctl argument type.
 */
struct drm_client {
        int idx;                /**< Which client desired? */
        int auth;               /**< Is client authenticated? */
        unsigned long pid;      /**< Process ID */
        unsigned long uid;      /**< User ID */
        unsigned long magic;    /**< Magic */
        unsigned long iocs;     /**< Ioctl count */
};

enum drm_stat_type {
        _DRM_STAT_LOCK,
        _DRM_STAT_OPENS,
        _DRM_STAT_CLOSES,
        _DRM_STAT_IOCTLS,
        _DRM_STAT_LOCKS,
        _DRM_STAT_UNLOCKS,
        _DRM_STAT_VALUE,        /**< Generic value */
        _DRM_STAT_BYTE,         /**< Generic byte counter (1024bytes/K) */
        _DRM_STAT_COUNT,        /**< Generic non-byte counter (1000/k) */

        _DRM_STAT_IRQ,          /**< IRQ */
        _DRM_STAT_PRIMARY,      /**< Primary DMA bytes */
        _DRM_STAT_SECONDARY,    /**< Secondary DMA bytes */
        _DRM_STAT_DMA,          /**< DMA */
        _DRM_STAT_SPECIAL,      /**< Special DMA (e.g., priority or polled) */
        _DRM_STAT_MISSED        /**< Missed DMA opportunity */
            /* Add to the *END* of the list */
};

/*
 * DRM_IOCTL_GET_STATS ioctl argument type.
 */
struct drm_stats {
        unsigned long count;
        struct {
                unsigned long value;
                enum drm_stat_type type;
        } data[15];
};

/*
 * Hardware locking flags.
 */
enum drm_lock_flags {
        _DRM_LOCK_READY = 0x01,      /**< Wait until hardware is ready for DMA */
        _DRM_LOCK_QUIESCENT = 0x02,  /**< Wait until hardware quiescent */
        _DRM_LOCK_FLUSH = 0x04,      /**< Flush this context's DMA queue first */
        _DRM_LOCK_FLUSH_ALL = 0x08,  /**< Flush all DMA queues first */
        /* These *HALT* flags aren't supported yet
           -- they will be used to support the
           full-screen DGA-like mode. */
        _DRM_HALT_ALL_QUEUES = 0x10, /**< Halt all current and future queues */
        _DRM_HALT_CUR_QUEUES = 0x20  /**< Halt all current queues */
};

/*
 * DRM_IOCTL_LOCK, DRM_IOCTL_UNLOCK and DRM_IOCTL_FINISH ioctl argument type.
 *
 * \sa drmGetLock() and drmUnlock().
 */
struct drm_lock {
        int context;
        enum drm_lock_flags flags;
};

/*
 * DMA flags
 *
 * \warning
 * These values \e must match xf86drm.h.
 *
 * \sa drm_dma.
 */
enum drm_dma_flags {
        /* Flags for DMA buffer dispatch */
        _DRM_DMA_BLOCK = 0x01,        /**<
                                       * Block until buffer dispatched.
                                       *
                                       * \note The buffer may not yet have
                                       * been processed by the hardware --
                                       * getting a hardware lock with the
                                       * hardware quiescent will ensure
                                       * that the buffer has been
                                       * processed.
                                       */
        _DRM_DMA_WHILE_LOCKED = 0x02, /**< Dispatch while lock held */
        _DRM_DMA_PRIORITY = 0x04,     /**< High priority dispatch */

        /* Flags for DMA buffer request */
        _DRM_DMA_WAIT = 0x10,         /**< Wait for free buffers */
        _DRM_DMA_SMALLER_OK = 0x20,   /**< Smaller-than-requested buffers OK */
        _DRM_DMA_LARGER_OK = 0x40     /**< Larger-than-requested buffers OK */
};

/*
 * DRM_IOCTL_ADD_BUFS and DRM_IOCTL_MARK_BUFS ioctl argument type.
 *
 * \sa drmAddBufs().
 */
struct drm_buf_desc {
        int count;               /**< Number of buffers of this size */
        int size;                /**< Size in bytes */
        int low_mark;            /**< Low water mark */
        int high_mark;           /**< High water mark */
        enum {
                _DRM_PAGE_ALIGN = 0x01, /**< Align on page boundaries for DMA */
                _DRM_AGP_BUFFER = 0x02, /**< Buffer is in AGP space */
                _DRM_SG_BUFFER = 0x04,  /**< Scatter/gather memory buffer */
                _DRM_FB_BUFFER = 0x08,  /**< Buffer is in frame buffer */
                _DRM_PCI_BUFFER_RO = 0x10 /**< Map PCI DMA buffer read-only */
        } flags;
        unsigned long agp_start; /**<
                                  * Start address of where the AGP buffers are
                                  * in the AGP aperture
                                  */
};

/*
 * DRM_IOCTL_INFO_BUFS ioctl argument type.
 */
struct drm_buf_info {
        int count;              /**< Entries in list */
        struct drm_buf_desc *list;
};

/*
 * DRM_IOCTL_FREE_BUFS ioctl argument type.
 */
struct drm_buf_free {
        int count;
        int *list;
};

/*
 * Buffer information
 *
 * \sa drm_buf_map.
 */
struct drm_buf_pub {
        int idx;                       /**< Index into the master buffer list */
        int total;                     /**< Buffer size */
        int used;                      /**< Amount of buffer in use (for DMA) */
        void *address;         /**< Address of buffer */
};

/*
 * DRM_IOCTL_MAP_BUFS ioctl argument type.
 */
struct drm_buf_map {
        int count;              /**< Length of the buffer list */
#ifdef __cplusplus
        void *virt;
#else
        void *virtual;          /**< Mmap'd area in user-virtual */
#endif
        struct drm_buf_pub *list;       /**< Buffer information */
};

/*
 * DRM_IOCTL_DMA ioctl argument type.
 *
 * Indices here refer to the offset into the buffer list in drm_buf_get.
 *
 * \sa drmDMA().
 */
struct drm_dma {
        int context;                      /**< Context handle */
        int send_count;                   /**< Number of buffers to send */
        int *send_indices;        /**< List of handles to buffers */
        int *send_sizes;                  /**< Lengths of data to send */
        enum drm_dma_flags flags;         /**< Flags */
        int request_count;                /**< Number of buffers requested */
        int request_size;                 /**< Desired size for buffers */
        int *request_indices;     /**< Buffer information */
        int *request_sizes;
        int granted_count;                /**< Number of buffers granted */
};

enum drm_ctx_flags {
        _DRM_CONTEXT_PRESERVED = 0x01,
        _DRM_CONTEXT_2DONLY = 0x02
};

/*
 * DRM_IOCTL_ADD_CTX ioctl argument type.
 *
 * \sa drmCreateContext() and drmDestroyContext().
 */
struct drm_ctx {
        drm_context_t handle;
        enum drm_ctx_flags flags;
};

/*
 * DRM_IOCTL_RES_CTX ioctl argument type.
 */
struct drm_ctx_res {
        int count;
        struct drm_ctx *contexts;
};

/*
 * DRM_IOCTL_ADD_DRAW and DRM_IOCTL_RM_DRAW ioctl argument type.
 */
struct drm_draw {
        drm_drawable_t handle;
};

/*
 * DRM_IOCTL_UPDATE_DRAW ioctl argument type.
 */
typedef enum {
        DRM_DRAWABLE_CLIPRECTS
} drm_drawable_info_type_t;

struct drm_update_draw {
        drm_drawable_t handle;
        unsigned int type;
        unsigned int num;
        unsigned long long data;
};

/*
 * DRM_IOCTL_GET_MAGIC and DRM_IOCTL_AUTH_MAGIC ioctl argument type.
 */
struct drm_auth {
        drm_magic_t magic;
};

/*
 * DRM_IOCTL_IRQ_BUSID ioctl argument type.
 *
 * \sa drmGetInterruptFromBusID().
 */
struct drm_irq_busid {
        int irq;        /**< IRQ number */
        int busnum;     /**< bus number */
        int devnum;     /**< device number */
        int funcnum;    /**< function number */
};

enum drm_vblank_seq_type {
        _DRM_VBLANK_ABSOLUTE = 0x0,     /**< Wait for specific vblank sequence number */
        _DRM_VBLANK_RELATIVE = 0x1,     /**< Wait for given number of vblanks */
        /* bits 1-6 are reserved for high crtcs */
        _DRM_VBLANK_HIGH_CRTC_MASK = 0x0000003e,
        _DRM_VBLANK_EVENT = 0x4000000,   /**< Send event instead of blocking */
        _DRM_VBLANK_FLIP = 0x8000000,   /**< Scheduled buffer swap should flip */
        _DRM_VBLANK_NEXTONMISS = 0x10000000,    /**< If missed, wait for next vblank */
        _DRM_VBLANK_SECONDARY = 0x20000000,     /**< Secondary display controller */
        _DRM_VBLANK_SIGNAL = 0x40000000 /**< Send signal instead of blocking, unsupported */
};
#define _DRM_VBLANK_HIGH_CRTC_SHIFT 1

#define _DRM_VBLANK_TYPES_MASK (_DRM_VBLANK_ABSOLUTE | _DRM_VBLANK_RELATIVE)
#define _DRM_VBLANK_FLAGS_MASK (_DRM_VBLANK_EVENT | _DRM_VBLANK_SIGNAL | \
                                _DRM_VBLANK_SECONDARY | _DRM_VBLANK_NEXTONMISS)

struct drm_wait_vblank_request {
        enum drm_vblank_seq_type type;
        unsigned int sequence;
        unsigned long signal;
};

struct drm_wait_vblank_reply {
        enum drm_vblank_seq_type type;
        unsigned int sequence;
        long tval_sec;
        long tval_usec;
};

/*
 * DRM_IOCTL_WAIT_VBLANK ioctl argument type.
 *
 * \sa drmWaitVBlank().
 */
union drm_wait_vblank {
        struct drm_wait_vblank_request request;
        struct drm_wait_vblank_reply reply;
};

#define _DRM_PRE_MODESET 1
#define _DRM_POST_MODESET 2

/*
 * DRM_IOCTL_MODESET_CTL ioctl argument type
 *
 * \sa drmModesetCtl().
 */
struct drm_modeset_ctl {
        __u32 crtc;
        __u32 cmd;
};

/*
 * DRM_IOCTL_AGP_ENABLE ioctl argument type.
 *
 * \sa drmAgpEnable().
 */
struct drm_agp_mode {
        unsigned long mode;     /**< AGP mode */
};

/*
 * DRM_IOCTL_AGP_ALLOC and DRM_IOCTL_AGP_FREE ioctls argument type.
 *
 * \sa drmAgpAlloc() and drmAgpFree().
 */
struct drm_agp_buffer {
        unsigned long size;     /**< In bytes -- will round to page boundary */
        unsigned long handle;   /**< Used for binding / unbinding */
        unsigned long type;     /**< Type of memory to allocate */
        unsigned long physical; /**< Physical used by i810 */
};

/*
 * DRM_IOCTL_AGP_BIND and DRM_IOCTL_AGP_UNBIND ioctls argument type.
 *
 * \sa drmAgpBind() and drmAgpUnbind().
 */
struct drm_agp_binding {
        unsigned long handle;   /**< From drm_agp_buffer */
        unsigned long offset;   /**< In bytes -- will round to page boundary */
};

/*
 * DRM_IOCTL_AGP_INFO ioctl argument type.
 *
 * \sa drmAgpVersionMajor(), drmAgpVersionMinor(), drmAgpGetMode(),
 * drmAgpBase(), drmAgpSize(), drmAgpMemoryUsed(), drmAgpMemoryAvail(),
 * drmAgpVendorId() and drmAgpDeviceId().
 */
struct drm_agp_info {
        int agp_version_major;
        int agp_version_minor;
        unsigned long mode;
        unsigned long aperture_base;    /* physical address */
        unsigned long aperture_size;    /* bytes */
        unsigned long memory_allowed;   /* bytes */
        unsigned long memory_used;

        /* PCI information */
        unsigned short id_vendor;
        unsigned short id_device;
};

/*
 * DRM_IOCTL_SG_ALLOC ioctl argument type.
 */
struct drm_scatter_gather {
        unsigned long size;     /**< In bytes -- will round to page boundary */
        unsigned long handle;   /**< Used for mapping / unmapping */
};

/*
 * DRM_IOCTL_SET_VERSION ioctl argument type.
 */
struct drm_set_version {
        int drm_di_major;
        int drm_di_minor;
        int drm_dd_major;
        int drm_dd_minor;
};

/* DRM_IOCTL_GEM_CLOSE ioctl argument type */
struct drm_gem_close {
        /** Handle of the object to be closed. */
        __u32 handle;
        __u32 pad;
};

/* DRM_IOCTL_GEM_FLINK ioctl argument type */
struct drm_gem_flink {
        /** Handle for the object being named */
        __u32 handle;

        /** Returned global name */
        __u32 name;
};

/* DRM_IOCTL_GEM_OPEN ioctl argument type */
struct drm_gem_open {
        /** Name of object being opened */
        __u32 name;

        /** Returned handle for the object */
        __u32 handle;

        /** Returned size of the object */
        __u64 size;
};

/**
 * DRM_CAP_DUMB_BUFFER
 *
 * If set to 1, the driver supports creating dumb buffers via the
 * &DRM_IOCTL_MODE_CREATE_DUMB ioctl.
 */
#define DRM_CAP_DUMB_BUFFER             0x1
/**
 * DRM_CAP_VBLANK_HIGH_CRTC
 *
 * If set to 1, the kernel supports specifying a :ref:`CRTC index<crtc_index>`
 * in the high bits of &drm_wait_vblank_request.type.
 *
 * Starting kernel version 2.6.39, this capability is always set to 1.
 */
#define DRM_CAP_VBLANK_HIGH_CRTC        0x2
/**
 * DRM_CAP_DUMB_PREFERRED_DEPTH
 *
 * The preferred bit depth for dumb buffers.
 *
 * The bit depth is the number of bits used to indicate the color of a single
 * pixel excluding any padding. This is different from the number of bits per
 * pixel. For instance, XRGB8888 has a bit depth of 24 but has 32 bits per
 * pixel.
 *
 * Note that this preference only applies to dumb buffers, it's irrelevant for
 * other types of buffers.
 */
#define DRM_CAP_DUMB_PREFERRED_DEPTH    0x3
/**
 * DRM_CAP_DUMB_PREFER_SHADOW
 *
 * If set to 1, the driver prefers userspace to render to a shadow buffer
 * instead of directly rendering to a dumb buffer. For best speed, userspace
 * should do streaming ordered memory copies into the dumb buffer and never
 * read from it.
 *
 * Note that this preference only applies to dumb buffers, it's irrelevant for
 * other types of buffers.
 */
#define DRM_CAP_DUMB_PREFER_SHADOW      0x4
/**
 * DRM_CAP_PRIME
 *
 * Bitfield of supported PRIME sharing capabilities. See &DRM_PRIME_CAP_IMPORT
 * and &DRM_PRIME_CAP_EXPORT.
 *
 * Starting from kernel version 6.6, both &DRM_PRIME_CAP_IMPORT and
 * &DRM_PRIME_CAP_EXPORT are always advertised.
 *
 * PRIME buffers are exposed as dma-buf file descriptors.
 * See :ref:`prime_buffer_sharing`.
 */
#define DRM_CAP_PRIME                   0x5
/**
 * DRM_PRIME_CAP_IMPORT
 *
 * If this bit is set in &DRM_CAP_PRIME, the driver supports importing PRIME
 * buffers via the &DRM_IOCTL_PRIME_FD_TO_HANDLE ioctl.
 *
 * Starting from kernel version 6.6, this bit is always set in &DRM_CAP_PRIME.
 */
#define  DRM_PRIME_CAP_IMPORT           0x1
/**
 * DRM_PRIME_CAP_EXPORT
 *
 * If this bit is set in &DRM_CAP_PRIME, the driver supports exporting PRIME
 * buffers via the &DRM_IOCTL_PRIME_HANDLE_TO_FD ioctl.
 *
 * Starting from kernel version 6.6, this bit is always set in &DRM_CAP_PRIME.
 */
#define  DRM_PRIME_CAP_EXPORT           0x2
/**
 * DRM_CAP_TIMESTAMP_MONOTONIC
 *
 * If set to 0, the kernel will report timestamps with ``CLOCK_REALTIME`` in
 * struct drm_event_vblank. If set to 1, the kernel will report timestamps with
 * ``CLOCK_MONOTONIC``. See ``clock_gettime(2)`` for the definition of these
 * clocks.
 *
 * Starting from kernel version 2.6.39, the default value for this capability
 * is 1. Starting kernel version 4.15, this capability is always set to 1.
 */
#define DRM_CAP_TIMESTAMP_MONOTONIC     0x6
/**
 * DRM_CAP_ASYNC_PAGE_FLIP
 *
 * If set to 1, the driver supports &DRM_MODE_PAGE_FLIP_ASYNC.
 */
#define DRM_CAP_ASYNC_PAGE_FLIP         0x7
/**
 * DRM_CAP_CURSOR_WIDTH
 *
 * The ``CURSOR_WIDTH`` and ``CURSOR_HEIGHT`` capabilities return a valid
 * width x height combination for the hardware cursor. The intention is that a
 * hardware agnostic userspace can query a cursor plane size to use.
 *
 * Note that the cross-driver contract is to merely return a valid size;
 * drivers are free to attach another meaning on top, eg. i915 returns the
 * maximum plane size.
 */
#define DRM_CAP_CURSOR_WIDTH            0x8
/**
 * DRM_CAP_CURSOR_HEIGHT
 *
 * See &DRM_CAP_CURSOR_WIDTH.
 */
#define DRM_CAP_CURSOR_HEIGHT           0x9
/**
 * DRM_CAP_ADDFB2_MODIFIERS
 *
 * If set to 1, the driver supports supplying modifiers in the
 * &DRM_IOCTL_MODE_ADDFB2 ioctl.
 */
#define DRM_CAP_ADDFB2_MODIFIERS        0x10
/**
 * DRM_CAP_PAGE_FLIP_TARGET
 *
 * If set to 1, the driver supports the &DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE and
 * &DRM_MODE_PAGE_FLIP_TARGET_RELATIVE flags in
 * &drm_mode_crtc_page_flip_target.flags for the &DRM_IOCTL_MODE_PAGE_FLIP
 * ioctl.
 */
#define DRM_CAP_PAGE_FLIP_TARGET        0x11
/**
 * DRM_CAP_CRTC_IN_VBLANK_EVENT
 *
 * If set to 1, the kernel supports reporting the CRTC ID in
 * &drm_event_vblank.crtc_id for the &DRM_EVENT_VBLANK and
 * &DRM_EVENT_FLIP_COMPLETE events.
 *
 * Starting kernel version 4.12, this capability is always set to 1.
 */
#define DRM_CAP_CRTC_IN_VBLANK_EVENT    0x12
/**
 * DRM_CAP_SYNCOBJ
 *
 * If set to 1, the driver supports sync objects. See :ref:`drm_sync_objects`.
 */
#define DRM_CAP_SYNCOBJ         0x13
/**
 * DRM_CAP_SYNCOBJ_TIMELINE
 *
 * If set to 1, the driver supports timeline operations on sync objects. See
 * :ref:`drm_sync_objects`.
 */
#define DRM_CAP_SYNCOBJ_TIMELINE        0x14

/* DRM_IOCTL_GET_CAP ioctl argument type */
struct drm_get_cap {
        __u64 capability;
        __u64 value;
};

/**
 * DRM_CLIENT_CAP_STEREO_3D
 *
 * If set to 1, the DRM core will expose the stereo 3D capabilities of the
 * monitor by advertising the supported 3D layouts in the flags of struct
 * drm_mode_modeinfo. See ``DRM_MODE_FLAG_3D_*``.
 *
 * This capability is always supported for all drivers starting from kernel
 * version 3.13.
 */
#define DRM_CLIENT_CAP_STEREO_3D        1

/**
 * DRM_CLIENT_CAP_UNIVERSAL_PLANES
 *
 * If set to 1, the DRM core will expose all planes (overlay, primary, and
 * cursor) to userspace.
 *
 * This capability has been introduced in kernel version 3.15. Starting from
 * kernel version 3.17, this capability is always supported for all drivers.
 */
#define DRM_CLIENT_CAP_UNIVERSAL_PLANES  2

/**
 * DRM_CLIENT_CAP_ATOMIC
 *
 * If set to 1, the DRM core will expose atomic properties to userspace. This
 * implicitly enables &DRM_CLIENT_CAP_UNIVERSAL_PLANES and
 * &DRM_CLIENT_CAP_ASPECT_RATIO.
 *
 * If the driver doesn't support atomic mode-setting, enabling this capability
 * will fail with -EOPNOTSUPP.
 *
 * This capability has been introduced in kernel version 4.0. Starting from
 * kernel version 4.2, this capability is always supported for atomic-capable
 * drivers.
 */
#define DRM_CLIENT_CAP_ATOMIC   3

/**
 * DRM_CLIENT_CAP_ASPECT_RATIO
 *
 * If set to 1, the DRM core will provide aspect ratio information in modes.
 * See ``DRM_MODE_FLAG_PIC_AR_*``.
 *
 * This capability is always supported for all drivers starting from kernel
 * version 4.18.
 */
#define DRM_CLIENT_CAP_ASPECT_RATIO    4

/**
 * DRM_CLIENT_CAP_WRITEBACK_CONNECTORS
 *
 * If set to 1, the DRM core will expose special connectors to be used for
 * writing back to memory the scene setup in the commit. The client must enable
 * &DRM_CLIENT_CAP_ATOMIC first.
 *
 * This capability is always supported for atomic-capable drivers starting from
 * kernel version 4.19.
 */
#define DRM_CLIENT_CAP_WRITEBACK_CONNECTORS     5

/* DRM_IOCTL_SET_CLIENT_CAP ioctl argument type */
struct drm_set_client_cap {
        __u64 capability;
        __u64 value;
};

#define DRM_RDWR O_RDWR
#define DRM_CLOEXEC O_CLOEXEC
struct drm_prime_handle {
        __u32 handle;

        /** Flags.. only applicable for handle->fd */
        __u32 flags;

        /** Returned dmabuf file descriptor */
        __s32 fd;
};

struct drm_syncobj_create {
        __u32 handle;
#define DRM_SYNCOBJ_CREATE_SIGNALED (1 << 0)
        __u32 flags;
};

struct drm_syncobj_destroy {
        __u32 handle;
        __u32 pad;
};

#define DRM_SYNCOBJ_FD_TO_HANDLE_FLAGS_IMPORT_SYNC_FILE (1 << 0)
#define DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_EXPORT_SYNC_FILE (1 << 0)
struct drm_syncobj_handle {
        __u32 handle;
        __u32 flags;

        __s32 fd;
        __u32 pad;
};

struct drm_syncobj_transfer {
        __u32 src_handle;
        __u32 dst_handle;
        __u64 src_point;
        __u64 dst_point;
        __u32 flags;
        __u32 pad;
};

#define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL (1 << 0)
#define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT (1 << 1)
#define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE (1 << 2) /* wait for time point to become available */
struct drm_syncobj_wait {
        __u64 handles;
        /* absolute timeout */
        __s64 timeout_nsec;
        __u32 count_handles;
        __u32 flags;
        __u32 first_signaled; /* only valid when not waiting all */
        __u32 pad;
};

struct drm_syncobj_timeline_wait {
        __u64 handles;
        /* wait on specific timeline point for every handles*/
        __u64 points;
        /* absolute timeout */
        __s64 timeout_nsec;
        __u32 count_handles;
        __u32 flags;
        __u32 first_signaled; /* only valid when not waiting all */
        __u32 pad;
};

/**
 * struct drm_syncobj_eventfd
 * @handle: syncobj handle.
 * @flags: Zero to wait for the point to be signalled, or
 *         &DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE to wait for a fence to be
 *         available for the point.
 * @point: syncobj timeline point (set to zero for binary syncobjs).
 * @fd: Existing eventfd to sent events to.
 * @pad: Must be zero.
 *
 * Register an eventfd to be signalled by a syncobj. The eventfd counter will
 * be incremented by one.
 */
struct drm_syncobj_eventfd {
        __u32 handle;
        __u32 flags;
        __u64 point;
        __s32 fd;
        __u32 pad;
};


struct drm_syncobj_array {
        __u64 handles;
        __u32 count_handles;
        __u32 pad;
};

#define DRM_SYNCOBJ_QUERY_FLAGS_LAST_SUBMITTED (1 << 0) /* last available point on timeline syncobj */
struct drm_syncobj_timeline_array {
        __u64 handles;
        __u64 points;
        __u32 count_handles;
        __u32 flags;
};


/* Query current scanout sequence number */
struct drm_crtc_get_sequence {
        __u32 crtc_id;          /* requested crtc_id */
        __u32 active;           /* return: crtc output is active */
        __u64 sequence;         /* return: most recent vblank sequence */
        __s64 sequence_ns;      /* return: most recent time of first pixel out */
};

/* Queue event to be delivered at specified sequence. Time stamp marks
 * when the first pixel of the refresh cycle leaves the display engine
 * for the display
 */
#define DRM_CRTC_SEQUENCE_RELATIVE              0x00000001      /* sequence is relative to current */
#define DRM_CRTC_SEQUENCE_NEXT_ON_MISS          0x00000002      /* Use next sequence if we've missed */

struct drm_crtc_queue_sequence {
        __u32 crtc_id;
        __u32 flags;
        __u64 sequence;         /* on input, target sequence. on output, actual sequence */
        __u64 user_data;        /* user data passed to event */
};

#if defined(__cplusplus)
}
#endif

#include "drm_mode.h"

#if defined(__cplusplus)
extern "C" {
#endif

#define DRM_IOCTL_BASE                  'd'
#define DRM_IO(nr)                      _IO(DRM_IOCTL_BASE,nr)
#define DRM_IOR(nr,type)                _IOR(DRM_IOCTL_BASE,nr,type)
#define DRM_IOW(nr,type)                _IOW(DRM_IOCTL_BASE,nr,type)
#define DRM_IOWR(nr,type)               _IOWR(DRM_IOCTL_BASE,nr,type)

#define DRM_IOCTL_VERSION               DRM_IOWR(0x00, struct drm_version)
#define DRM_IOCTL_GET_UNIQUE            DRM_IOWR(0x01, struct drm_unique)
#define DRM_IOCTL_GET_MAGIC             DRM_IOR( 0x02, struct drm_auth)
#define DRM_IOCTL_IRQ_BUSID             DRM_IOWR(0x03, struct drm_irq_busid)
#define DRM_IOCTL_GET_MAP               DRM_IOWR(0x04, struct drm_map)
#define DRM_IOCTL_GET_CLIENT            DRM_IOWR(0x05, struct drm_client)
#define DRM_IOCTL_GET_STATS             DRM_IOR( 0x06, struct drm_stats)
#define DRM_IOCTL_SET_VERSION           DRM_IOWR(0x07, struct drm_set_version)
#define DRM_IOCTL_MODESET_CTL           DRM_IOW(0x08, struct drm_modeset_ctl)
/**
 * DRM_IOCTL_GEM_CLOSE - Close a GEM handle.
 *
 * GEM handles are not reference-counted by the kernel. User-space is
 * responsible for managing their lifetime. For example, if user-space imports
 * the same memory object twice on the same DRM file description, the same GEM
 * handle is returned by both imports, and user-space needs to ensure
 * &DRM_IOCTL_GEM_CLOSE is performed once only. The same situation can happen
 * when a memory object is allocated, then exported and imported again on the
 * same DRM file description. The &DRM_IOCTL_MODE_GETFB2 IOCTL is an exception
 * and always returns fresh new GEM handles even if an existing GEM handle
 * already refers to the same memory object before the IOCTL is performed.
 */
#define DRM_IOCTL_GEM_CLOSE             DRM_IOW (0x09, struct drm_gem_close)
#define DRM_IOCTL_GEM_FLINK             DRM_IOWR(0x0a, struct drm_gem_flink)
#define DRM_IOCTL_GEM_OPEN              DRM_IOWR(0x0b, struct drm_gem_open)
#define DRM_IOCTL_GET_CAP               DRM_IOWR(0x0c, struct drm_get_cap)
#define DRM_IOCTL_SET_CLIENT_CAP        DRM_IOW( 0x0d, struct drm_set_client_cap)

#define DRM_IOCTL_SET_UNIQUE            DRM_IOW( 0x10, struct drm_unique)
#define DRM_IOCTL_AUTH_MAGIC            DRM_IOW( 0x11, struct drm_auth)
#define DRM_IOCTL_BLOCK                 DRM_IOWR(0x12, struct drm_block)
#define DRM_IOCTL_UNBLOCK               DRM_IOWR(0x13, struct drm_block)
#define DRM_IOCTL_CONTROL               DRM_IOW( 0x14, struct drm_control)
#define DRM_IOCTL_ADD_MAP               DRM_IOWR(0x15, struct drm_map)
#define DRM_IOCTL_ADD_BUFS              DRM_IOWR(0x16, struct drm_buf_desc)
#define DRM_IOCTL_MARK_BUFS             DRM_IOW( 0x17, struct drm_buf_desc)
#define DRM_IOCTL_INFO_BUFS             DRM_IOWR(0x18, struct drm_buf_info)
#define DRM_IOCTL_MAP_BUFS              DRM_IOWR(0x19, struct drm_buf_map)
#define DRM_IOCTL_FREE_BUFS             DRM_IOW( 0x1a, struct drm_buf_free)

#define DRM_IOCTL_RM_MAP                DRM_IOW( 0x1b, struct drm_map)

#define DRM_IOCTL_SET_SAREA_CTX         DRM_IOW( 0x1c, struct drm_ctx_priv_map)
#define DRM_IOCTL_GET_SAREA_CTX         DRM_IOWR(0x1d, struct drm_ctx_priv_map)

#define DRM_IOCTL_SET_MASTER            DRM_IO(0x1e)
#define DRM_IOCTL_DROP_MASTER           DRM_IO(0x1f)

#define DRM_IOCTL_ADD_CTX               DRM_IOWR(0x20, struct drm_ctx)
#define DRM_IOCTL_RM_CTX                DRM_IOWR(0x21, struct drm_ctx)
#define DRM_IOCTL_MOD_CTX               DRM_IOW( 0x22, struct drm_ctx)
#define DRM_IOCTL_GET_CTX               DRM_IOWR(0x23, struct drm_ctx)
#define DRM_IOCTL_SWITCH_CTX            DRM_IOW( 0x24, struct drm_ctx)
#define DRM_IOCTL_NEW_CTX               DRM_IOW( 0x25, struct drm_ctx)
#define DRM_IOCTL_RES_CTX               DRM_IOWR(0x26, struct drm_ctx_res)
#define DRM_IOCTL_ADD_DRAW              DRM_IOWR(0x27, struct drm_draw)
#define DRM_IOCTL_RM_DRAW               DRM_IOWR(0x28, struct drm_draw)
#define DRM_IOCTL_DMA                   DRM_IOWR(0x29, struct drm_dma)
#define DRM_IOCTL_LOCK                  DRM_IOW( 0x2a, struct drm_lock)
#define DRM_IOCTL_UNLOCK                DRM_IOW( 0x2b, struct drm_lock)
#define DRM_IOCTL_FINISH                DRM_IOW( 0x2c, struct drm_lock)

/**
 * DRM_IOCTL_PRIME_HANDLE_TO_FD - Convert a GEM handle to a DMA-BUF FD.
 *
 * User-space sets &drm_prime_handle.handle with the GEM handle to export and
 * &drm_prime_handle.flags, and gets back a DMA-BUF file descriptor in
 * &drm_prime_handle.fd.
 *
 * The export can fail for any driver-specific reason, e.g. because export is
 * not supported for this specific GEM handle (but might be for others).
 *
 * Support for exporting DMA-BUFs is advertised via &DRM_PRIME_CAP_EXPORT.
 */
#define DRM_IOCTL_PRIME_HANDLE_TO_FD    DRM_IOWR(0x2d, struct drm_prime_handle)
/**
 * DRM_IOCTL_PRIME_FD_TO_HANDLE - Convert a DMA-BUF FD to a GEM handle.
 *
 * User-space sets &drm_prime_handle.fd with a DMA-BUF file descriptor to
 * import, and gets back a GEM handle in &drm_prime_handle.handle.
 * &drm_prime_handle.flags is unused.
 *
 * If an existing GEM handle refers to the memory object backing the DMA-BUF,
 * that GEM handle is returned. Therefore user-space which needs to handle
 * arbitrary DMA-BUFs must have a user-space lookup data structure to manually
 * reference-count duplicated GEM handles. For more information see
 * &DRM_IOCTL_GEM_CLOSE.
 *
 * The import can fail for any driver-specific reason, e.g. because import is
 * only supported for DMA-BUFs allocated on this DRM device.
 *
 * Support for importing DMA-BUFs is advertised via &DRM_PRIME_CAP_IMPORT.
 */
#define DRM_IOCTL_PRIME_FD_TO_HANDLE    DRM_IOWR(0x2e, struct drm_prime_handle)

#define DRM_IOCTL_AGP_ACQUIRE           DRM_IO(  0x30)
#define DRM_IOCTL_AGP_RELEASE           DRM_IO(  0x31)
#define DRM_IOCTL_AGP_ENABLE            DRM_IOW( 0x32, struct drm_agp_mode)
#define DRM_IOCTL_AGP_INFO              DRM_IOR( 0x33, struct drm_agp_info)
#define DRM_IOCTL_AGP_ALLOC             DRM_IOWR(0x34, struct drm_agp_buffer)
#define DRM_IOCTL_AGP_FREE              DRM_IOW( 0x35, struct drm_agp_buffer)
#define DRM_IOCTL_AGP_BIND              DRM_IOW( 0x36, struct drm_agp_binding)
#define DRM_IOCTL_AGP_UNBIND            DRM_IOW( 0x37, struct drm_agp_binding)

#define DRM_IOCTL_SG_ALLOC              DRM_IOWR(0x38, struct drm_scatter_gather)
#define DRM_IOCTL_SG_FREE               DRM_IOW( 0x39, struct drm_scatter_gather)

#define DRM_IOCTL_WAIT_VBLANK           DRM_IOWR(0x3a, union drm_wait_vblank)

#define DRM_IOCTL_CRTC_GET_SEQUENCE     DRM_IOWR(0x3b, struct drm_crtc_get_sequence)
#define DRM_IOCTL_CRTC_QUEUE_SEQUENCE   DRM_IOWR(0x3c, struct drm_crtc_queue_sequence)

#define DRM_IOCTL_UPDATE_DRAW           DRM_IOW(0x3f, struct drm_update_draw)

#define DRM_IOCTL_MODE_GETRESOURCES     DRM_IOWR(0xA0, struct drm_mode_card_res)
#define DRM_IOCTL_MODE_GETCRTC          DRM_IOWR(0xA1, struct drm_mode_crtc)
#define DRM_IOCTL_MODE_SETCRTC          DRM_IOWR(0xA2, struct drm_mode_crtc)
#define DRM_IOCTL_MODE_CURSOR           DRM_IOWR(0xA3, struct drm_mode_cursor)
#define DRM_IOCTL_MODE_GETGAMMA         DRM_IOWR(0xA4, struct drm_mode_crtc_lut)
#define DRM_IOCTL_MODE_SETGAMMA         DRM_IOWR(0xA5, struct drm_mode_crtc_lut)
#define DRM_IOCTL_MODE_GETENCODER       DRM_IOWR(0xA6, struct drm_mode_get_encoder)
#define DRM_IOCTL_MODE_GETCONNECTOR     DRM_IOWR(0xA7, struct drm_mode_get_connector)
#define DRM_IOCTL_MODE_ATTACHMODE       DRM_IOWR(0xA8, struct drm_mode_mode_cmd) /* deprecated (never worked) */
#define DRM_IOCTL_MODE_DETACHMODE       DRM_IOWR(0xA9, struct drm_mode_mode_cmd) /* deprecated (never worked) */

#define DRM_IOCTL_MODE_GETPROPERTY      DRM_IOWR(0xAA, struct drm_mode_get_property)
#define DRM_IOCTL_MODE_SETPROPERTY      DRM_IOWR(0xAB, struct drm_mode_connector_set_property)
#define DRM_IOCTL_MODE_GETPROPBLOB      DRM_IOWR(0xAC, struct drm_mode_get_blob)
#define DRM_IOCTL_MODE_GETFB            DRM_IOWR(0xAD, struct drm_mode_fb_cmd)
#define DRM_IOCTL_MODE_ADDFB            DRM_IOWR(0xAE, struct drm_mode_fb_cmd)
/**
 * DRM_IOCTL_MODE_RMFB - Remove a framebuffer.
 *
 * This removes a framebuffer previously added via ADDFB/ADDFB2. The IOCTL
 * argument is a framebuffer object ID.
 *
 * Warning: removing a framebuffer currently in-use on an enabled plane will
 * disable that plane. The CRTC the plane is linked to may also be disabled
 * (depending on driver capabilities).
 */
#define DRM_IOCTL_MODE_RMFB             DRM_IOWR(0xAF, unsigned int)
#define DRM_IOCTL_MODE_PAGE_FLIP        DRM_IOWR(0xB0, struct drm_mode_crtc_page_flip)
#define DRM_IOCTL_MODE_DIRTYFB          DRM_IOWR(0xB1, struct drm_mode_fb_dirty_cmd)

#define DRM_IOCTL_MODE_CREATE_DUMB DRM_IOWR(0xB2, struct drm_mode_create_dumb)
#define DRM_IOCTL_MODE_MAP_DUMB    DRM_IOWR(0xB3, struct drm_mode_map_dumb)
#define DRM_IOCTL_MODE_DESTROY_DUMB    DRM_IOWR(0xB4, struct drm_mode_destroy_dumb)
#define DRM_IOCTL_MODE_GETPLANERESOURCES DRM_IOWR(0xB5, struct drm_mode_get_plane_res)
#define DRM_IOCTL_MODE_GETPLANE DRM_IOWR(0xB6, struct drm_mode_get_plane)
#define DRM_IOCTL_MODE_SETPLANE DRM_IOWR(0xB7, struct drm_mode_set_plane)
#define DRM_IOCTL_MODE_ADDFB2           DRM_IOWR(0xB8, struct drm_mode_fb_cmd2)
#define DRM_IOCTL_MODE_OBJ_GETPROPERTIES        DRM_IOWR(0xB9, struct drm_mode_obj_get_properties)
#define DRM_IOCTL_MODE_OBJ_SETPROPERTY  DRM_IOWR(0xBA, struct drm_mode_obj_set_property)
#define DRM_IOCTL_MODE_CURSOR2          DRM_IOWR(0xBB, struct drm_mode_cursor2)
#define DRM_IOCTL_MODE_ATOMIC           DRM_IOWR(0xBC, struct drm_mode_atomic)
#define DRM_IOCTL_MODE_CREATEPROPBLOB   DRM_IOWR(0xBD, struct drm_mode_create_blob)
#define DRM_IOCTL_MODE_DESTROYPROPBLOB  DRM_IOWR(0xBE, struct drm_mode_destroy_blob)

#define DRM_IOCTL_SYNCOBJ_CREATE        DRM_IOWR(0xBF, struct drm_syncobj_create)
#define DRM_IOCTL_SYNCOBJ_DESTROY       DRM_IOWR(0xC0, struct drm_syncobj_destroy)
#define DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD  DRM_IOWR(0xC1, struct drm_syncobj_handle)
#define DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE  DRM_IOWR(0xC2, struct drm_syncobj_handle)
#define DRM_IOCTL_SYNCOBJ_WAIT          DRM_IOWR(0xC3, struct drm_syncobj_wait)
#define DRM_IOCTL_SYNCOBJ_RESET         DRM_IOWR(0xC4, struct drm_syncobj_array)
#define DRM_IOCTL_SYNCOBJ_SIGNAL        DRM_IOWR(0xC5, struct drm_syncobj_array)

#define DRM_IOCTL_MODE_CREATE_LEASE     DRM_IOWR(0xC6, struct drm_mode_create_lease)
#define DRM_IOCTL_MODE_LIST_LESSEES     DRM_IOWR(0xC7, struct drm_mode_list_lessees)
#define DRM_IOCTL_MODE_GET_LEASE        DRM_IOWR(0xC8, struct drm_mode_get_lease)
#define DRM_IOCTL_MODE_REVOKE_LEASE     DRM_IOWR(0xC9, struct drm_mode_revoke_lease)

#define DRM_IOCTL_SYNCOBJ_TIMELINE_WAIT DRM_IOWR(0xCA, struct drm_syncobj_timeline_wait)
#define DRM_IOCTL_SYNCOBJ_QUERY         DRM_IOWR(0xCB, struct drm_syncobj_timeline_array)
#define DRM_IOCTL_SYNCOBJ_TRANSFER      DRM_IOWR(0xCC, struct drm_syncobj_transfer)
#define DRM_IOCTL_SYNCOBJ_TIMELINE_SIGNAL       DRM_IOWR(0xCD, struct drm_syncobj_timeline_array)

/**
 * DRM_IOCTL_MODE_GETFB2 - Get framebuffer metadata.
 *
 * This queries metadata about a framebuffer. User-space fills
 * &drm_mode_fb_cmd2.fb_id as the input, and the kernels fills the rest of the
 * struct as the output.
 *
 * If the client is DRM master or has &CAP_SYS_ADMIN, &drm_mode_fb_cmd2.handles
 * will be filled with GEM buffer handles. Fresh new GEM handles are always
 * returned, even if another GEM handle referring to the same memory object
 * already exists on the DRM file description. The caller is responsible for
 * removing the new handles, e.g. via the &DRM_IOCTL_GEM_CLOSE IOCTL. The same
 * new handle will be returned for multiple planes in case they use the same
 * memory object. Planes are valid until one has a zero handle -- this can be
 * used to compute the number of planes.
 *
 * Otherwise, &drm_mode_fb_cmd2.handles will be zeroed and planes are valid
 * until one has a zero &drm_mode_fb_cmd2.pitches.
 *
 * If the framebuffer has a format modifier, &DRM_MODE_FB_MODIFIERS will be set
 * in &drm_mode_fb_cmd2.flags and &drm_mode_fb_cmd2.modifier will contain the
 * modifier. Otherwise, user-space must ignore &drm_mode_fb_cmd2.modifier.
 *
 * To obtain DMA-BUF FDs for each plane without leaking GEM handles, user-space
 * can export each handle via &DRM_IOCTL_PRIME_HANDLE_TO_FD, then immediately
 * close each unique handle via &DRM_IOCTL_GEM_CLOSE, making sure to not
 * double-close handles which are specified multiple times in the array.
 */
#define DRM_IOCTL_MODE_GETFB2           DRM_IOWR(0xCE, struct drm_mode_fb_cmd2)

#define DRM_IOCTL_SYNCOBJ_EVENTFD       DRM_IOWR(0xCF, struct drm_syncobj_eventfd)

/*
 * Device specific ioctls should only be in their respective headers
 * The device specific ioctl range is from 0x40 to 0x9f.
 * Generic IOCTLS restart at 0xA0.
 *
 * \sa drmCommandNone(), drmCommandRead(), drmCommandWrite(), and
 * drmCommandReadWrite().
 */
#define DRM_COMMAND_BASE                0x40
#define DRM_COMMAND_END                 0xA0

/**
 * struct drm_event - Header for DRM events
 * @type: event type.
 * @length: total number of payload bytes (including header).
 *
 * This struct is a header for events written back to user-space on the DRM FD.
 * A read on the DRM FD will always only return complete events: e.g. if the
 * read buffer is 100 bytes large and there are two 64 byte events pending,
 * only one will be returned.
 *
 * Event types 0 - 0x7fffffff are generic DRM events, 0x80000000 and
 * up are chipset specific. Generic DRM events include &DRM_EVENT_VBLANK,
 * &DRM_EVENT_FLIP_COMPLETE and &DRM_EVENT_CRTC_SEQUENCE.
 */
struct drm_event {
        __u32 type;
        __u32 length;
};

/**
 * DRM_EVENT_VBLANK - vertical blanking event
 *
 * This event is sent in response to &DRM_IOCTL_WAIT_VBLANK with the
 * &_DRM_VBLANK_EVENT flag set.
 *
 * The event payload is a struct drm_event_vblank.
 */
#define DRM_EVENT_VBLANK 0x01
/**
 * DRM_EVENT_FLIP_COMPLETE - page-flip completion event
 *
 * This event is sent in response to an atomic commit or legacy page-flip with
 * the &DRM_MODE_PAGE_FLIP_EVENT flag set.
 *
 * The event payload is a struct drm_event_vblank.
 */
#define DRM_EVENT_FLIP_COMPLETE 0x02
/**
 * DRM_EVENT_CRTC_SEQUENCE - CRTC sequence event
 *
 * This event is sent in response to &DRM_IOCTL_CRTC_QUEUE_SEQUENCE.
 *
 * The event payload is a struct drm_event_crtc_sequence.
 */
#define DRM_EVENT_CRTC_SEQUENCE 0x03

struct drm_event_vblank {
        struct drm_event base;
        __u64 user_data;
        __u32 tv_sec;
        __u32 tv_usec;
        __u32 sequence;
        __u32 crtc_id; /* 0 on older kernels that do not support this */
};

/* Event delivered at sequence. Time stamp marks when the first pixel
 * of the refresh cycle leaves the display engine for the display
 */
struct drm_event_crtc_sequence {
        struct drm_event        base;
        __u64                   user_data;
        __s64                   time_ns;
        __u64                   sequence;
};

/* typedef area */
typedef struct drm_clip_rect drm_clip_rect_t;
typedef struct drm_drawable_info drm_drawable_info_t;
typedef struct drm_tex_region drm_tex_region_t;
typedef struct drm_hw_lock drm_hw_lock_t;
typedef struct drm_version drm_version_t;
typedef struct drm_unique drm_unique_t;
typedef struct drm_list drm_list_t;
typedef struct drm_block drm_block_t;
typedef struct drm_control drm_control_t;
typedef enum drm_map_type drm_map_type_t;
typedef enum drm_map_flags drm_map_flags_t;
typedef struct drm_ctx_priv_map drm_ctx_priv_map_t;
typedef struct drm_map drm_map_t;
typedef struct drm_client drm_client_t;
typedef enum drm_stat_type drm_stat_type_t;
typedef struct drm_stats drm_stats_t;
typedef enum drm_lock_flags drm_lock_flags_t;
typedef struct drm_lock drm_lock_t;
typedef enum drm_dma_flags drm_dma_flags_t;
typedef struct drm_buf_desc drm_buf_desc_t;
typedef struct drm_buf_info drm_buf_info_t;
typedef struct drm_buf_free drm_buf_free_t;
typedef struct drm_buf_pub drm_buf_pub_t;
typedef struct drm_buf_map drm_buf_map_t;
typedef struct drm_dma drm_dma_t;
typedef union drm_wait_vblank drm_wait_vblank_t;
typedef struct drm_agp_mode drm_agp_mode_t;
typedef enum drm_ctx_flags drm_ctx_flags_t;
typedef struct drm_ctx drm_ctx_t;
typedef struct drm_ctx_res drm_ctx_res_t;
typedef struct drm_draw drm_draw_t;
typedef struct drm_update_draw drm_update_draw_t;
typedef struct drm_auth drm_auth_t;
typedef struct drm_irq_busid drm_irq_busid_t;
typedef enum drm_vblank_seq_type drm_vblank_seq_type_t;

typedef struct drm_agp_buffer drm_agp_buffer_t;
typedef struct drm_agp_binding drm_agp_binding_t;
typedef struct drm_agp_info drm_agp_info_t;
typedef struct drm_scatter_gather drm_scatter_gather_t;
typedef struct drm_set_version drm_set_version_t;

#if defined(__cplusplus)
}
#endif

#endif