omap_drm.h

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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
 * include/uapi/drm/omap_drm.h
 *
 * Copyright (C) 2011 Texas Instruments
 * Author: Rob Clark <rob@ti.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published by
 * the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef __OMAP_DRM_H__
#define __OMAP_DRM_H__
 
#include "drm.h"
 
#if defined(__cplusplus)
extern "C" {
#endif
 
/* Please note that modifications to all structs defined here are
 * subject to backwards-compatibility constraints.
 */
 
#define OMAP_PARAM_CHIPSET_ID   1   /* ie. 0x3430, 0x4430, etc */
 
struct drm_omap_param {
    __u64 param;            /* in */
    __u64 value;            /* in (set_param), out (get_param) */
};
 
/* Scanout buffer, consumable by DSS */
#define OMAP_BO_SCANOUT     0x00000001
 
/* Buffer CPU caching mode: cached, write-combining or uncached. */
#define OMAP_BO_CACHED      0x00000000
#define OMAP_BO_WC      0x00000002
#define OMAP_BO_UNCACHED    0x00000004
#define OMAP_BO_CACHE_MASK  0x00000006
 
/* Use TILER for the buffer. The TILER container unit can be 8, 16 or 32 bits. */
#define OMAP_BO_TILED_8     0x00000100
#define OMAP_BO_TILED_16    0x00000200
#define OMAP_BO_TILED_32    0x00000300
#define OMAP_BO_TILED_MASK  0x00000f00
 
union omap_gem_size {
    __u32 bytes;        /* (for non-tiled formats) */
    struct {
        __u16 width;
        __u16 height;
    } tiled;        /* (for tiled formats) */
};
 
struct drm_omap_gem_new {
    union omap_gem_size size;   /* in */
    __u32 flags;            /* in */
    __u32 handle;           /* out */
    __u32 __pad;
};
 
/* mask of operations: */
enum omap_gem_op {
    OMAP_GEM_READ = 0x01,
    OMAP_GEM_WRITE = 0x02,
};
 
struct drm_omap_gem_cpu_prep {
    __u32 handle;           /* buffer handle (in) */
    __u32 op;           /* mask of omap_gem_op (in) */
};
 
struct drm_omap_gem_cpu_fini {
    __u32 handle;           /* buffer handle (in) */
    __u32 op;           /* mask of omap_gem_op (in) */
    /* TODO maybe here we pass down info about what regions are touched
     * by sw so we can be clever about cache ops?  For now a placeholder,
     * set to zero and we just do full buffer flush..
     */
    __u32 nregions;
    __u32 __pad;
};
 
struct drm_omap_gem_info {
    __u32 handle;           /* buffer handle (in) */
    __u32 pad;
    __u64 offset;           /* mmap offset (out) */
    /* note: in case of tiled buffers, the user virtual size can be
     * different from the physical size (ie. how many pages are needed
     * to back the object) which is returned in DRM_IOCTL_GEM_OPEN..
     * This size here is the one that should be used if you want to
     * mmap() the buffer:
     */
    __u32 size;         /* virtual size for mmap'ing (out) */
    __u32 __pad;
};
 
#define DRM_OMAP_GET_PARAM      0x00
#define DRM_OMAP_SET_PARAM      0x01
#define DRM_OMAP_GEM_NEW        0x03
#define DRM_OMAP_GEM_CPU_PREP       0x04    /* Deprecated, to be removed */
#define DRM_OMAP_GEM_CPU_FINI       0x05    /* Deprecated, to be removed */
#define DRM_OMAP_GEM_INFO       0x06
#define DRM_OMAP_NUM_IOCTLS     0x07
 
#define DRM_IOCTL_OMAP_GET_PARAM    DRM_IOWR(DRM_COMMAND_BASE + DRM_OMAP_GET_PARAM, struct drm_omap_param)
#define DRM_IOCTL_OMAP_SET_PARAM    DRM_IOW (DRM_COMMAND_BASE + DRM_OMAP_SET_PARAM, struct drm_omap_param)
#define DRM_IOCTL_OMAP_GEM_NEW      DRM_IOWR(DRM_COMMAND_BASE + DRM_OMAP_GEM_NEW, struct drm_omap_gem_new)
#define DRM_IOCTL_OMAP_GEM_CPU_PREP DRM_IOW (DRM_COMMAND_BASE + DRM_OMAP_GEM_CPU_PREP, struct drm_omap_gem_cpu_prep)
#define DRM_IOCTL_OMAP_GEM_CPU_FINI DRM_IOW (DRM_COMMAND_BASE + DRM_OMAP_GEM_CPU_FINI, struct drm_omap_gem_cpu_fini)
#define DRM_IOCTL_OMAP_GEM_INFO     DRM_IOWR(DRM_COMMAND_BASE + DRM_OMAP_GEM_INFO, struct drm_omap_gem_info)
 
#if defined(__cplusplus)
}
#endif
 
#endif /* __OMAP_DRM_H__ */