1 /*
2 * Copyright (C) 2012-2018 Rob Clark <robclark@freedesktop.org>
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 * Rob Clark <robclark@freedesktop.org>
25 */
26
27 #include <unistd.h>
28 #include <sys/stat.h>
29 #include <sys/types.h>
30
31 #include "util/os_file.h"
32
33 #include "freedreno_drmif.h"
34 #include "freedreno_priv.h"
35
36 struct fd_device *msm_device_new(int fd, drmVersionPtr version);
37
38 struct fd_device *
fd_device_new(int fd)39 fd_device_new(int fd)
40 {
41 struct fd_device *dev;
42 drmVersionPtr version;
43
44 /* figure out if we are kgsl or msm drm driver: */
45 version = drmGetVersion(fd);
46 if (!version) {
47 ERROR_MSG("cannot get version: %s", strerror(errno));
48 return NULL;
49 }
50
51 if (!strcmp(version->name, "msm")) {
52 DEBUG_MSG("msm DRM device");
53 if (version->version_major != 1) {
54 ERROR_MSG("unsupported version: %u.%u.%u", version->version_major,
55 version->version_minor, version->version_patchlevel);
56 dev = NULL;
57 goto out;
58 }
59
60 dev = msm_device_new(fd, version);
61 dev->version = version->version_minor;
62 #if HAVE_FREEDRENO_KGSL
63 } else if (!strcmp(version->name, "kgsl")) {
64 DEBUG_MSG("kgsl DRM device");
65 dev = kgsl_device_new(fd);
66 #endif
67 } else {
68 ERROR_MSG("unknown device: %s", version->name);
69 dev = NULL;
70 }
71
72 out:
73 drmFreeVersion(version);
74
75 if (!dev)
76 return NULL;
77
78 p_atomic_set(&dev->refcnt, 1);
79 dev->fd = fd;
80 dev->handle_table =
81 _mesa_hash_table_create(NULL, _mesa_hash_u32, _mesa_key_u32_equal);
82 dev->name_table =
83 _mesa_hash_table_create(NULL, _mesa_hash_u32, _mesa_key_u32_equal);
84 fd_bo_cache_init(&dev->bo_cache, false);
85 fd_bo_cache_init(&dev->ring_cache, true);
86
87 list_inithead(&dev->deferred_submits);
88 simple_mtx_init(&dev->submit_lock, mtx_plain);
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 */
96 struct fd_device *
fd_device_new_dup(int fd)97 fd_device_new_dup(int fd)
98 {
99 int dup_fd = os_dupfd_cloexec(fd);
100 struct fd_device *dev = fd_device_new(dup_fd);
101 if (dev)
102 dev->closefd = 1;
103 else
104 close(dup_fd);
105 return dev;
106 }
107
108 struct fd_device *
fd_device_ref(struct fd_device * dev)109 fd_device_ref(struct fd_device *dev)
110 {
111 p_atomic_inc(&dev->refcnt);
112 return dev;
113 }
114
115 void
fd_device_purge(struct fd_device * dev)116 fd_device_purge(struct fd_device *dev)
117 {
118 simple_mtx_lock(&table_lock);
119 fd_bo_cache_cleanup(&dev->bo_cache, 0);
120 fd_bo_cache_cleanup(&dev->ring_cache, 0);
121 simple_mtx_unlock(&table_lock);
122 }
123
124 static void
fd_device_del_impl(struct fd_device * dev)125 fd_device_del_impl(struct fd_device *dev)
126 {
127 int close_fd = dev->closefd ? dev->fd : -1;
128
129 simple_mtx_assert_locked(&table_lock);
130
131 assert(list_is_empty(&dev->deferred_submits));
132
133 fd_bo_cache_cleanup(&dev->bo_cache, 0);
134 fd_bo_cache_cleanup(&dev->ring_cache, 0);
135 _mesa_hash_table_destroy(dev->handle_table, NULL);
136 _mesa_hash_table_destroy(dev->name_table, NULL);
137 dev->funcs->destroy(dev);
138 if (close_fd >= 0)
139 close(close_fd);
140 }
141
142 void
fd_device_del_locked(struct fd_device * dev)143 fd_device_del_locked(struct fd_device *dev)
144 {
145 if (!p_atomic_dec_zero(&dev->refcnt))
146 return;
147 fd_device_del_impl(dev);
148 }
149
150 void
fd_device_del(struct fd_device * dev)151 fd_device_del(struct fd_device *dev)
152 {
153 if (!p_atomic_dec_zero(&dev->refcnt))
154 return;
155 simple_mtx_lock(&table_lock);
156 fd_device_del_impl(dev);
157 simple_mtx_unlock(&table_lock);
158 }
159
160 int
fd_device_fd(struct fd_device * dev)161 fd_device_fd(struct fd_device *dev)
162 {
163 return dev->fd;
164 }
165
166 enum fd_version
fd_device_version(struct fd_device * dev)167 fd_device_version(struct fd_device *dev)
168 {
169 return dev->version;
170 }
171
172 bool
fd_dbg(void)173 fd_dbg(void)
174 {
175 static int dbg;
176
177 if (!dbg)
178 dbg = getenv("LIBGL_DEBUG") ? 1 : -1;
179
180 return dbg == 1;
181 }
182
183 bool
fd_has_syncobj(struct fd_device * dev)184 fd_has_syncobj(struct fd_device *dev)
185 {
186 uint64_t value;
187 if (drmGetCap(dev->fd, DRM_CAP_SYNCOBJ, &value))
188 return false;
189 return value && dev->version >= FD_VERSION_FENCE_FD;
190 }
191