diff options
Diffstat (limited to 'etnaviv/etnaviv_device.c')
-rw-r--r-- | etnaviv/etnaviv_device.c | 119 |
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 | |||
46 | static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER; | ||
47 | |||
48 | struct 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. */ | ||
66 | struct 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 | |||
79 | struct etna_device *etna_device_ref(struct etna_device *dev) | ||
80 | { | ||
81 | atomic_inc(&dev->refcnt); | ||
82 | |||
83 | return dev; | ||
84 | } | ||
85 | |||
86 | static 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 | |||
98 | drm_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 | |||
106 | void 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 | |||
116 | int etna_device_fd(struct etna_device *dev) | ||
117 | { | ||
118 | return dev->fd; | ||
119 | } | ||