1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2011 The FreeBSD Foundation
5 *
6 * This software was developed by Konstantin Belousov under sponsorship from
7 * the FreeBSD Foundation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 */
31
32#ifndef DRM_GEM_NAMES_H
33#define	DRM_GEM_NAMES_H
34
35#include <sys/types.h>
36#include <sys/lock.h>
37#include <sys/mutex.h>
38#include <sys/queue.h>
39
40struct drm_gem_name {
41	uint32_t name;
42	void *ptr;
43	LIST_ENTRY(drm_gem_name) link;
44};
45
46struct drm_gem_names {
47	struct mtx lock;
48	LIST_HEAD(drm_gem_names_head, drm_gem_name) *names_hash;
49	u_long hash_mask;
50	struct unrhdr *unr;
51};
52
53void drm_gem_names_init(struct drm_gem_names *names);
54void drm_gem_names_fini(struct drm_gem_names *names);
55uint32_t drm_gem_find_name(struct drm_gem_names *names, void *ptr);
56void *drm_gem_find_ptr(struct drm_gem_names *names, uint32_t name);
57void *drm_gem_name_ref(struct drm_gem_names *names, uint32_t name,
58    void (*ref)(void *));
59int drm_gem_name_create(struct drm_gem_names *names, void *obj, uint32_t *name);
60void drm_gem_names_foreach(struct drm_gem_names *names,
61    int (*f)(uint32_t, void *, void *), void *arg);
62void *drm_gem_names_remove(struct drm_gem_names *names, uint32_t name);
63
64#endif
65