1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 * $FreeBSD$ 31 * 32 */ 33 34 #ifndef DRM_GEM_NAMES_H 35 #define DRM_GEM_NAMES_H 36 37 #include <sys/types.h> 38 #include <sys/lock.h> 39 #include <sys/mutex.h> 40 #include <sys/queue.h> 41 42 struct drm_gem_name { 43 uint32_t name; 44 void *ptr; 45 LIST_ENTRY(drm_gem_name) link; 46 }; 47 48 struct drm_gem_names { 49 struct mtx lock; 50 LIST_HEAD(drm_gem_names_head, drm_gem_name) *names_hash; 51 u_long hash_mask; 52 struct unrhdr *unr; 53 }; 54 55 void drm_gem_names_init(struct drm_gem_names *names); 56 void drm_gem_names_fini(struct drm_gem_names *names); 57 uint32_t drm_gem_find_name(struct drm_gem_names *names, void *ptr); 58 void *drm_gem_find_ptr(struct drm_gem_names *names, uint32_t name); 59 void *drm_gem_name_ref(struct drm_gem_names *names, uint32_t name, 60 void (*ref)(void *)); 61 int drm_gem_name_create(struct drm_gem_names *names, void *obj, uint32_t *name); 62 void drm_gem_names_foreach(struct drm_gem_names *names, 63 int (*f)(uint32_t, void *, void *), void *arg); 64 void *drm_gem_names_remove(struct drm_gem_names *names, uint32_t name); 65 66 #endif 67