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meson.build: Fix header detection on FreeBSD
[android-x86/external-libdrm.git] / freedreno / freedreno_device.c
1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
2
3 /*
4  * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the "Software"),
8  * to deal in the Software without restriction, including without limitation
9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10  * and/or sell copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice (including the next
14  * paragraph) shall be included in all copies or substantial portions of the
15  * Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23  * SOFTWARE.
24  *
25  * Authors:
26  *    Rob Clark <robclark@freedesktop.org>
27  */
28
29 #include <sys/types.h>
30 #include <sys/stat.h>
31 #include <unistd.h>
32
33 #include "freedreno_drmif.h"
34 #include "freedreno_priv.h"
35
36 static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
37
38 struct fd_device * kgsl_device_new(int fd);
39 struct fd_device * msm_device_new(int fd);
40
41 drm_public struct fd_device * fd_device_new(int fd)
42 {
43         struct fd_device *dev;
44         drmVersionPtr version;
45
46         /* figure out if we are kgsl or msm drm driver: */
47         version = drmGetVersion(fd);
48         if (!version) {
49                 ERROR_MSG("cannot get version: %s", strerror(errno));
50                 return NULL;
51         }
52
53         if (!strcmp(version->name, "msm")) {
54                 DEBUG_MSG("msm DRM device");
55                 if (version->version_major != 1) {
56                         ERROR_MSG("unsupported version: %u.%u.%u", version->version_major,
57                                 version->version_minor, version->version_patchlevel);
58                         dev = NULL;
59                         goto out;
60                 }
61
62                 dev = msm_device_new(fd);
63                 dev->version = version->version_minor;
64 #if HAVE_FREEDRENO_KGSL
65         } else if (!strcmp(version->name, "kgsl")) {
66                 DEBUG_MSG("kgsl DRM device");
67                 dev = kgsl_device_new(fd);
68 #endif
69         } else {
70                 ERROR_MSG("unknown device: %s", version->name);
71                 dev = NULL;
72         }
73
74 out:
75         drmFreeVersion(version);
76
77         if (!dev)
78                 return NULL;
79
80         atomic_set(&dev->refcnt, 1);
81         dev->fd = fd;
82         dev->handle_table = drmHashCreate();
83         dev->name_table = drmHashCreate();
84         fd_bo_cache_init(&dev->bo_cache, FALSE);
85         fd_bo_cache_init(&dev->ring_cache, TRUE);
86
87         return dev;
88 }
89
90 /* like fd_device_new() but creates it's own private dup() of the fd
91  * which is close()d when the device is finalized.
92  */
93 drm_public struct fd_device * fd_device_new_dup(int fd)
94 {
95         int dup_fd = dup(fd);
96         struct fd_device *dev = fd_device_new(dup_fd);
97         if (dev)
98                 dev->closefd = 1;
99         else
100                 close(dup_fd);
101         return dev;
102 }
103
104 drm_public struct fd_device * fd_device_ref(struct fd_device *dev)
105 {
106         atomic_inc(&dev->refcnt);
107         return dev;
108 }
109
110 static void fd_device_del_impl(struct fd_device *dev)
111 {
112         int close_fd = dev->closefd ? dev->fd : -1;
113         fd_bo_cache_cleanup(&dev->bo_cache, 0);
114         drmHashDestroy(dev->handle_table);
115         drmHashDestroy(dev->name_table);
116         dev->funcs->destroy(dev);
117         if (close_fd >= 0)
118                 close(close_fd);
119 }
120
121 drm_private void fd_device_del_locked(struct fd_device *dev)
122 {
123         if (!atomic_dec_and_test(&dev->refcnt))
124                 return;
125         fd_device_del_impl(dev);
126 }
127
128 drm_public void fd_device_del(struct fd_device *dev)
129 {
130         if (!atomic_dec_and_test(&dev->refcnt))
131                 return;
132         pthread_mutex_lock(&table_lock);
133         fd_device_del_impl(dev);
134         pthread_mutex_unlock(&table_lock);
135 }
136
137 drm_public int fd_device_fd(struct fd_device *dev)
138 {
139         return dev->fd;
140 }
141
142 drm_public enum fd_version fd_device_version(struct fd_device *dev)
143 {
144         return dev->version;
145 }