guest/mesa/src/util/libdrm.h

/*
 * Copyright © 2023 Google, Inc.
 *
 * 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
 * THE AUTHORS OR COPYRIGHT HOLDERS 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.
 */

/*
 * A simple header that either gives you the real libdrm or a no-op shim,
 * depending on whether HAVE_LIBDRM is defined.  This is intended to avoid
 * the proliferation of #ifdef'ery to support environments without libdrm.
 */

#ifdef HAVE_LIBDRM
#include <xf86drm.h>
#else

#include <errno.h>

#define DRM_NODE_PRIMARY 0
#define DRM_NODE_CONTROL 1
#define DRM_NODE_RENDER  2
#define DRM_NODE_MAX     3

#define DRM_BUS_PCI       0
#define DRM_BUS_USB       1
#define DRM_BUS_PLATFORM  2
#define DRM_BUS_HOST1X    3

typedef struct _drmDevice {
    char **nodes; /* DRM_NODE_MAX sized array */
    int available_nodes; /* DRM_NODE_* bitmask */
    int bustype;
    /* ... */
} drmDevice, *drmDevicePtr;

static inline int
drmGetDevices2(uint32_t flags, drmDevicePtr devices[], int max_devices)
{
   return -ENOENT;
}

static inline void
drmFreeDevices(drmDevicePtr devices[], int count) {}

typedef struct _drmVersion {
    int     version_major;        /**< Major version */
    int     version_minor;        /**< Minor version */
    int     version_patchlevel;   /**< Patch level */
    int     name_len;             /**< Length of name buffer */
    char    *name;                /**< Name of driver */
    int     date_len;             /**< Length of date buffer */
    char    *date;                /**< User-space buffer to hold date */
    int     desc_len;             /**< Length of desc buffer */
    char    *desc;                /**< User-space buffer to hold desc */
} drmVersion, *drmVersionPtr;

static inline struct _drmVersion *
drmGetVersion(int fd) { return NULL; }

static inline void
drmFreeVersion(struct _drmVersion *v) {}

#endif