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 #if HAVE_FREEDRENO_VIRTIO
38 struct fd_device *virtio_device_new(int fd, drmVersionPtr version);
39 #endif
40
41 struct fd_device *
fd_device_new(int fd)42 fd_device_new(int fd)
43 {
44 struct fd_device *dev = NULL;
45 drmVersionPtr version;
46
47 /* figure out if we are kgsl or msm drm driver: */
48 version = drmGetVersion(fd);
49 if (!version) {
50 ERROR_MSG("cannot get version: %s", strerror(errno));
51 return NULL;
52 }
53
54 if (!strcmp(version->name, "msm")) {
55 DEBUG_MSG("msm DRM device");
56 if (version->version_major != 1) {
57 ERROR_MSG("unsupported version: %u.%u.%u", version->version_major,
58 version->version_minor, version->version_patchlevel);
59 goto out;
60 }
61
62 dev = msm_device_new(fd, version);
63 #if HAVE_FREEDRENO_VIRTIO
64 } else if (!strcmp(version->name, "virtio_gpu")) {
65 DEBUG_MSG("virtio_gpu DRM device");
66 dev = virtio_device_new(fd, version);
67 #endif
68 #if 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 }
74
75 if (!dev) {
76 INFO_MSG("unsupported device: %s", version->name);
77 goto out;
78 }
79
80 out:
81 drmFreeVersion(version);
82
83 if (!dev)
84 return NULL;
85
86 p_atomic_set(&dev->refcnt, 1);
87 dev->fd = fd;
88 dev->handle_table =
89 _mesa_hash_table_create(NULL, _mesa_hash_u32, _mesa_key_u32_equal);
90 dev->name_table =
91 _mesa_hash_table_create(NULL, _mesa_hash_u32, _mesa_key_u32_equal);
92 fd_bo_cache_init(&dev->bo_cache, false);
93 fd_bo_cache_init(&dev->ring_cache, true);
94
95 list_inithead(&dev->deferred_submits);
96 simple_mtx_init(&dev->submit_lock, mtx_plain);
97 simple_mtx_init(&dev->suballoc_lock, mtx_plain);
98
99 return dev;
100 }
101
102 /* like fd_device_new() but creates it's own private dup() of the fd
103 * which is close()d when the device is finalized.
104 */
105 struct fd_device *
fd_device_new_dup(int fd)106 fd_device_new_dup(int fd)
107 {
108 int dup_fd = os_dupfd_cloexec(fd);
109 struct fd_device *dev = fd_device_new(dup_fd);
110 if (dev)
111 dev->closefd = 1;
112 else
113 close(dup_fd);
114 return dev;
115 }
116
117 /* Convenience helper to open the drm device and return new fd_device:
118 */
119 struct fd_device *
fd_device_open(void)120 fd_device_open(void)
121 {
122 int fd;
123
124 fd = drmOpenWithType("msm", NULL, DRM_NODE_RENDER);
125 #if HAVE_FREEDRENO_VIRTIO
126 if (fd < 0)
127 fd = drmOpenWithType("virtio_gpu", NULL, DRM_NODE_RENDER);
128 #endif
129 if (fd < 0)
130 return NULL;
131
132 return fd_device_new(fd);
133 }
134
135 struct fd_device *
fd_device_ref(struct fd_device * dev)136 fd_device_ref(struct fd_device *dev)
137 {
138 p_atomic_inc(&dev->refcnt);
139 return dev;
140 }
141
142 void
fd_device_purge(struct fd_device * dev)143 fd_device_purge(struct fd_device *dev)
144 {
145 simple_mtx_lock(&table_lock);
146 fd_bo_cache_cleanup(&dev->bo_cache, 0);
147 fd_bo_cache_cleanup(&dev->ring_cache, 0);
148 simple_mtx_unlock(&table_lock);
149 }
150
151 static void
fd_device_del_impl(struct fd_device * dev)152 fd_device_del_impl(struct fd_device *dev)
153 {
154 simple_mtx_assert_locked(&table_lock);
155
156 assert(list_is_empty(&dev->deferred_submits));
157
158 if (dev->suballoc_bo)
159 fd_bo_del_locked(dev->suballoc_bo);
160
161 fd_bo_cache_cleanup(&dev->bo_cache, 0);
162 fd_bo_cache_cleanup(&dev->ring_cache, 0);
163
164 /* Needs to be after bo cache cleanup in case backend has a
165 * util_vma_heap that it destroys:
166 */
167 dev->funcs->destroy(dev);
168
169 _mesa_hash_table_destroy(dev->handle_table, NULL);
170 _mesa_hash_table_destroy(dev->name_table, NULL);
171
172 if (util_queue_is_initialized(&dev->submit_queue))
173 util_queue_destroy(&dev->submit_queue);
174
175 if (dev->closefd)
176 close(dev->fd);
177
178 free(dev);
179 }
180
181 void
fd_device_del_locked(struct fd_device * dev)182 fd_device_del_locked(struct fd_device *dev)
183 {
184 if (!p_atomic_dec_zero(&dev->refcnt))
185 return;
186 fd_device_del_impl(dev);
187 }
188
189 void
fd_device_del(struct fd_device * dev)190 fd_device_del(struct fd_device *dev)
191 {
192 if (!p_atomic_dec_zero(&dev->refcnt))
193 return;
194 simple_mtx_lock(&table_lock);
195 fd_device_del_impl(dev);
196 simple_mtx_unlock(&table_lock);
197 }
198
199 int
fd_device_fd(struct fd_device * dev)200 fd_device_fd(struct fd_device *dev)
201 {
202 return dev->fd;
203 }
204
205 enum fd_version
fd_device_version(struct fd_device * dev)206 fd_device_version(struct fd_device *dev)
207 {
208 return dev->version;
209 }
210
211 DEBUG_GET_ONCE_BOOL_OPTION(libgl, "LIBGL_DEBUG", false)
212
213 bool
fd_dbg(void)214 fd_dbg(void)
215 {
216 return debug_get_option_libgl();
217 }
218
219 bool
fd_has_syncobj(struct fd_device * dev)220 fd_has_syncobj(struct fd_device *dev)
221 {
222 uint64_t value;
223 if (drmGetCap(dev->fd, DRM_CAP_SYNCOBJ, &value))
224 return false;
225 return value && dev->version >= FD_VERSION_FENCE_FD;
226 }
227