1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
/*
* 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;
}
|
