1 /*
2 * Copyright © 2015 Canonical Ltd. (Maarten Lankhorst)
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 shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 */
22
23 #include <sys/ioctl.h>
24 #include <dlfcn.h>
25 #include <fcntl.h>
26 #include <stdio.h>
27 #include <unistd.h>
28 #include <errno.h>
29 #include <pthread.h>
30
31 #include "xf86drm.h"
32 #include "nouveau.h"
33
34 static __typeof__(ioctl) *old_ioctl;
35 static int failed;
36
37 static int import_fd;
38
39 #if defined(__GLIBC__) || defined(__FreeBSD__) || defined(__DragonFly__)
ioctl(int fd,unsigned long request,...)40 int ioctl(int fd, unsigned long request, ...)
41 #else
42 int ioctl(int fd, int request, ...)
43 #endif
44 {
45 va_list va;
46 int ret;
47 void *arg;
48
49 va_start(va, request);
50 arg = va_arg(va, void *);
51 ret = old_ioctl(fd, request, arg);
52 va_end(va);
53
54 if (ret < 0 && request == DRM_IOCTL_GEM_CLOSE && errno == EINVAL)
55 failed = 1;
56
57 return ret;
58 }
59
60 static void *
openclose(void * dev)61 openclose(void *dev)
62 {
63 struct nouveau_device *nvdev = dev;
64 struct nouveau_bo *bo = NULL;
65 int i;
66
67 for (i = 0; i < 100000; ++i) {
68 if (!nouveau_bo_prime_handle_ref(nvdev, import_fd, &bo))
69 nouveau_bo_ref(NULL, &bo);
70 }
71 return NULL;
72 }
73
main(int argc,char * argv[])74 int main(int argc, char *argv[])
75 {
76 drmVersionPtr version;
77 const char *device = NULL;
78 int err, fd, fd2;
79 struct nouveau_device *nvdev, *nvdev2;
80 struct nouveau_bo *bo;
81 pthread_t t1, t2;
82
83 old_ioctl = dlsym(RTLD_NEXT, "ioctl");
84
85 if (argc < 2) {
86 fd = drmOpenWithType("nouveau", NULL, DRM_NODE_RENDER);
87 if (fd >= 0)
88 fd2 = drmOpenWithType("nouveau", NULL, DRM_NODE_RENDER);
89 } else {
90 device = argv[1];
91
92 fd = open(device, O_RDWR);
93 if (fd >= 0)
94 fd2 = open(device, O_RDWR);
95 else
96 fd2 = fd = -errno;
97 }
98
99 if (fd < 0) {
100 fprintf(stderr, "Opening nouveau render node failed with %i\n", fd);
101 return device ? -fd : 77;
102 }
103
104 if (fd2 < 0) {
105 fprintf(stderr, "Opening second nouveau render node failed with %i\n", -errno);
106 return errno;
107 }
108
109 version = drmGetVersion(fd);
110 if (version) {
111 printf("Version: %d.%d.%d\n", version->version_major,
112 version->version_minor, version->version_patchlevel);
113 printf(" Name: %s\n", version->name);
114 printf(" Date: %s\n", version->date);
115 printf(" Description: %s\n", version->desc);
116
117 drmFreeVersion(version);
118 }
119
120 err = nouveau_device_wrap(fd, 0, &nvdev);
121 if (!err)
122 err = nouveau_device_wrap(fd2, 0, &nvdev2);
123 if (err < 0)
124 return 1;
125
126 err = nouveau_bo_new(nvdev2, NOUVEAU_BO_GART, 0, 4096, NULL, &bo);
127 if (!err)
128 err = nouveau_bo_set_prime(bo, &import_fd);
129
130 if (!err) {
131 pthread_create(&t1, NULL, openclose, nvdev);
132 pthread_create(&t2, NULL, openclose, nvdev);
133 }
134
135 pthread_join(t1, NULL);
136 pthread_join(t2, NULL);
137
138 close(import_fd);
139 nouveau_bo_ref(NULL, &bo);
140
141 nouveau_device_del(&nvdev2);
142 nouveau_device_del(&nvdev);
143 if (device) {
144 close(fd2);
145 close(fd);
146 } else {
147 drmClose(fd2);
148 drmClose(fd);
149 }
150
151 if (failed)
152 fprintf(stderr, "DRM_IOCTL_GEM_CLOSE failed with EINVAL,\n"
153 "race in opening/closing bo is likely.\n");
154
155 return failed;
156 }
157