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 #ifdef HAVE_CONFIG_H
30 # include <config.h>
31 #endif
32
33 #include <sys/types.h>
34 #include <sys/stat.h>
35 #include <unistd.h>
36
37 #include "freedreno_drmif.h"
38 #include "freedreno_priv.h"
39
40 static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
41
42 struct fd_device * kgsl_device_new(int fd);
43 struct fd_device * msm_device_new(int fd);
44
fd_device_new(int fd)45 struct fd_device * fd_device_new(int fd)
46 {
47 struct fd_device *dev;
48 drmVersionPtr version;
49
50 /* figure out if we are kgsl or msm drm driver: */
51 version = drmGetVersion(fd);
52 if (!version) {
53 ERROR_MSG("cannot get version: %s", strerror(errno));
54 return NULL;
55 }
56
57 if (!strcmp(version->name, "msm")) {
58 DEBUG_MSG("msm DRM device");
59 if (version->version_major != 1) {
60 ERROR_MSG("unsupported version: %u.%u.%u", version->version_major,
61 version->version_minor, version->version_patchlevel);
62 dev = NULL;
63 goto out;
64 }
65
66 dev = msm_device_new(fd);
67 dev->version = version->version_minor;
68 #ifdef HAVE_FREEDRENO_KGSL
69 } else if (!strcmp(version->name, "kgsl")) {
70 DEBUG_MSG("kgsl DRM device");
71 dev = kgsl_device_new(fd);
72 #endif
73 } else {
74 ERROR_MSG("unknown device: %s", version->name);
75 dev = NULL;
76 }
77
78 out:
79 drmFreeVersion(version);
80
81 if (!dev)
82 return NULL;
83
84 atomic_set(&dev->refcnt, 1);
85 dev->fd = fd;
86 dev->handle_table = drmHashCreate();
87 dev->name_table = drmHashCreate();
88 fd_bo_cache_init(&dev->bo_cache, FALSE);
89
90 return dev;
91 }
92
93 /* like fd_device_new() but creates it's own private dup() of the fd
94 * which is close()d when the device is finalized.
95 */
fd_device_new_dup(int fd)96 struct fd_device * fd_device_new_dup(int fd)
97 {
98 int dup_fd = dup(fd);
99 struct fd_device *dev = fd_device_new(dup_fd);
100 if (dev)
101 dev->closefd = 1;
102 else
103 close(dup_fd);
104 return dev;
105 }
106
fd_device_ref(struct fd_device * dev)107 struct fd_device * fd_device_ref(struct fd_device *dev)
108 {
109 atomic_inc(&dev->refcnt);
110 return dev;
111 }
112
fd_device_del_impl(struct fd_device * dev)113 static void fd_device_del_impl(struct fd_device *dev)
114 {
115 fd_bo_cache_cleanup(&dev->bo_cache, 0);
116 drmHashDestroy(dev->handle_table);
117 drmHashDestroy(dev->name_table);
118 if (dev->closefd)
119 close(dev->fd);
120 dev->funcs->destroy(dev);
121 }
122
fd_device_del_locked(struct fd_device * dev)123 drm_private void fd_device_del_locked(struct fd_device *dev)
124 {
125 if (!atomic_dec_and_test(&dev->refcnt))
126 return;
127 fd_device_del_impl(dev);
128 }
129
fd_device_del(struct fd_device * dev)130 void fd_device_del(struct fd_device *dev)
131 {
132 if (!atomic_dec_and_test(&dev->refcnt))
133 return;
134 pthread_mutex_lock(&table_lock);
135 fd_device_del_impl(dev);
136 pthread_mutex_unlock(&table_lock);
137 }
138
fd_device_fd(struct fd_device * dev)139 int fd_device_fd(struct fd_device *dev)
140 {
141 return dev->fd;
142 }
143
fd_device_version(struct fd_device * dev)144 enum fd_version fd_device_version(struct fd_device *dev)
145 {
146 return dev->version;
147 }
148