nova_drm.h

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/* SPDX-License-Identifier: MIT */
 
#ifndef __NOVA_DRM_H__
#define __NOVA_DRM_H__
 
#include "drm.h"
 
/* DISCLAIMER: Do not use, this is not a stable uAPI.
 *
 * This uAPI serves only testing purposes as long as this driver is still in
 * development. It is required to implement and test infrastructure which is
 * upstreamed in the context of this driver. See also [1].
 *
 * [1] https://lore.kernel.org/dri-devel/Zfsj0_tb-0-tNrJy@cassiopeiae/T/#u
 */
 
#if defined(__cplusplus)
extern "C" {
#endif
 
/*
 * NOVA_GETPARAM_VRAM_BAR_SIZE
 *
 * Query the VRAM BAR size in bytes.
 */
#define NOVA_GETPARAM_VRAM_BAR_SIZE 0x1
 
struct drm_nova_getparam {
    __u64 param;
 
    __u64 value;
};
 
struct drm_nova_gem_create {
    __u32 handle;
 
    __u32 pad;
 
    __u64 size;
};
 
struct drm_nova_gem_info {
    __u32 handle;
 
    __u32 pad;
 
    __u64 size;
};
 
#define DRM_NOVA_GETPARAM       0x00
#define DRM_NOVA_GEM_CREATE     0x01
#define DRM_NOVA_GEM_INFO       0x02
 
/* Note: this is an enum so that it can be resolved by Rust bindgen. */
enum {
    DRM_IOCTL_NOVA_GETPARAM     = DRM_IOWR(DRM_COMMAND_BASE + DRM_NOVA_GETPARAM,
                           struct drm_nova_getparam),
    DRM_IOCTL_NOVA_GEM_CREATE   = DRM_IOWR(DRM_COMMAND_BASE + DRM_NOVA_GEM_CREATE,
                           struct drm_nova_gem_create),
    DRM_IOCTL_NOVA_GEM_INFO     = DRM_IOWR(DRM_COMMAND_BASE + DRM_NOVA_GEM_INFO,
                           struct drm_nova_gem_info),
};
 
#if defined(__cplusplus)
}
#endif
 
#endif /* __NOVA_DRM_H__ */