1/*
2 * Copyright (C) 2014 Etnaviv Project
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 * Authors:
24 *    Christian Gmeiner <christian.gmeiner@gmail.com>
25 */
26
27#include <stdlib.h>
28#include <linux/stddef.h>
29#include <linux/types.h>
30#include <errno.h>
31#include <sys/mman.h>
32#include <fcntl.h>
33#include <unistd.h>
34#include <pthread.h>
35
36#include <xf86drm.h>
37#include <xf86atomic.h>
38
39#include "etnaviv_priv.h"
40#include "etnaviv_drmif.h"
41
42static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
43
44drm_public struct etna_device *etna_device_new(int fd)
45{
46	struct etna_device *dev = calloc(sizeof(*dev), 1);
47
48	if (!dev)
49		return NULL;
50
51	atomic_set(&dev->refcnt, 1);
52	dev->fd = fd;
53	dev->handle_table = drmHashCreate();
54	dev->name_table = drmHashCreate();
55	etna_bo_cache_init(&dev->bo_cache);
56
57	return dev;
58}
59
60/* like etna_device_new() but creates it's own private dup() of the fd
61 * which is close()d when the device is finalized. */
62drm_public struct etna_device *etna_device_new_dup(int fd)
63{
64	int dup_fd = dup(fd);
65	struct etna_device *dev = etna_device_new(dup_fd);
66
67	if (dev)
68		dev->closefd = 1;
69	else
70		close(dup_fd);
71
72	return dev;
73}
74
75drm_public struct etna_device *etna_device_ref(struct etna_device *dev)
76{
77	atomic_inc(&dev->refcnt);
78
79	return dev;
80}
81
82static void etna_device_del_impl(struct etna_device *dev)
83{
84	etna_bo_cache_cleanup(&dev->bo_cache, 0);
85	drmHashDestroy(dev->handle_table);
86	drmHashDestroy(dev->name_table);
87
88	if (dev->closefd)
89		close(dev->fd);
90
91	free(dev);
92}
93
94drm_private void etna_device_del_locked(struct etna_device *dev)
95{
96	if (!atomic_dec_and_test(&dev->refcnt))
97		return;
98
99	etna_device_del_impl(dev);
100}
101
102drm_public void etna_device_del(struct etna_device *dev)
103{
104	if (!atomic_dec_and_test(&dev->refcnt))
105		return;
106
107	pthread_mutex_lock(&table_lock);
108	etna_device_del_impl(dev);
109	pthread_mutex_unlock(&table_lock);
110}
111
112drm_public int etna_device_fd(struct etna_device *dev)
113{
114   return dev->fd;
115}
116