/*

 * Copyright (C) 2014 Etnaviv Project

 *

 * 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:

 *    Christian Gmeiner <christian.gmeiner@gmail.com>

 */

#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 "etnaviv_priv.h"

#include "etnaviv_drmif.h"

static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;

drm_public struct etna_device *etna_device_new(int fd)

{

	struct etna_device *dev = calloc(sizeof(*dev), 1);

	if (!dev)

		return NULL;

	atomic_set(&dev->refcnt, 1);

	dev->fd = fd;

	dev->handle_table = drmHashCreate();

	dev->name_table = drmHashCreate();

	etna_bo_cache_init(&dev->bo_cache);

	return dev;

}

/* like etna_device_new() but creates it's own private dup() of the fd

 * which is close()d when the device is finalized. */

drm_public struct etna_device *etna_device_new_dup(int fd)

{

	int dup_fd = dup(fd);

	struct etna_device *dev = etna_device_new(dup_fd);

	if (dev)

		dev->closefd = 1;

	else

		close(dup_fd);

	return dev;

}

drm_public struct etna_device *etna_device_ref(struct etna_device *dev)

{

	atomic_inc(&dev->refcnt);

	return dev;

}

static void etna_device_del_impl(struct etna_device *dev)

{

	etna_bo_cache_cleanup(&dev->bo_cache, 0);

	drmHashDestroy(dev->handle_table);

	drmHashDestroy(dev->name_table);

	if (dev->closefd)

		close(dev->fd);

	free(dev);

}

drm_private void etna_device_del_locked(struct etna_device *dev)

{

	if (!atomic_dec_and_test(&dev->refcnt))

		return;

	etna_device_del_impl(dev);

}

drm_public void etna_device_del(struct etna_device *dev)

{

	if (!atomic_dec_and_test(&dev->refcnt))

		return;

	pthread_mutex_lock(&table_lock);

	etna_device_del_impl(dev);

	pthread_mutex_unlock(&table_lock);

}

drm_public int etna_device_fd(struct etna_device *dev)

{

   return dev->fd;

}