asdk-libdrm

/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */

​

/*

 * Copyright (C) 2011 Texas Instruments, 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.

 *

 * Authors:

 *    Rob Clark <rob@ti.com>

 */

​

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

​

#include <stdlib.h>

#include <linux/stddef.h>

#include <linux/types.h>

#include <errno.h>

#include <sys/mman.h>

#include <fcntl.h>

#include <unistd.h>

#include <pthread.h>

​

#include <xf86drm.h>

#include <xf86atomic.h>

​

#include "omap_drm.h"

#include "omap_drmif.h"

​

#define __round_mask(x, y) ((__typeof__(x))((y)-1))

#define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)

​

#ifndef PAGE_SIZE

#define PAGE_SIZE 4096

#endif

​

static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;

static void * dev_table;

​

struct omap_device {

    int fd;

    atomic_t refcnt;

​

    /* The handle_table is used to track GEM bo handles associated w/

     * this fd.  This is needed, in particular, when importing