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Diffstat (limited to 'etnaviv/etnaviv_device.c')
-rw-r--r--etnaviv/etnaviv_device.c119
1 files changed, 119 insertions, 0 deletions
diff --git a/etnaviv/etnaviv_device.c b/etnaviv/etnaviv_device.c
new file mode 100644
index 00000000..3ce92030
--- /dev/null
+++ b/etnaviv/etnaviv_device.c
@@ -0,0 +1,119 @@
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#ifdef HAVE_CONFIG_H
28#include "config.h"
29#endif
30
31#include <stdlib.h>
32#include <linux/stddef.h>
33#include <linux/types.h>
34#include <errno.h>
35#include <sys/mman.h>
36#include <fcntl.h>
37#include <unistd.h>
38#include <pthread.h>
39
40#include <xf86drm.h>
41#include <xf86atomic.h>
42
43#include "etnaviv_priv.h"
44#include "etnaviv_drmif.h"
45
46static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
47
48struct etna_device *etna_device_new(int fd)
49{
50 struct etna_device *dev = calloc(sizeof(*dev), 1);
51
52 if (!dev)
53 return NULL;
54
55 atomic_set(&dev->refcnt, 1);
56 dev->fd = fd;
57 dev->handle_table = drmHashCreate();
58 dev->name_table = drmHashCreate();
59 etna_bo_cache_init(&dev->bo_cache);
60
61 return dev;
62}
63
64/* like etna_device_new() but creates it's own private dup() of the fd
65 * which is close()d when the device is finalized. */
66struct etna_device *etna_device_new_dup(int fd)
67{
68 int dup_fd = dup(fd);
69 struct etna_device *dev = etna_device_new(dup_fd);
70
71 if (dev)
72 dev->closefd = 1;
73 else
74 close(dup_fd);
75
76 return dev;
77}
78
79struct etna_device *etna_device_ref(struct etna_device *dev)
80{
81 atomic_inc(&dev->refcnt);
82
83 return dev;
84}
85
86static void etna_device_del_impl(struct etna_device *dev)
87{
88 etna_bo_cache_cleanup(&dev->bo_cache, 0);
89 drmHashDestroy(dev->handle_table);
90 drmHashDestroy(dev->name_table);
91
92 if (dev->closefd)
93 close(dev->fd);
94
95 free(dev);
96}
97
98drm_private void etna_device_del_locked(struct etna_device *dev)
99{
100 if (!atomic_dec_and_test(&dev->refcnt))
101 return;
102
103 etna_device_del_impl(dev);
104}
105
106void etna_device_del(struct etna_device *dev)
107{
108 if (!atomic_dec_and_test(&dev->refcnt))
109 return;
110
111 pthread_mutex_lock(&table_lock);
112 etna_device_del_impl(dev);
113 pthread_mutex_unlock(&table_lock);
114}
115
116int etna_device_fd(struct etna_device *dev)
117{
118 return dev->fd;
119}