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
ioctl(int fd,unsigned long request,...)39 int ioctl(int fd, unsigned long request, ...)
40 {
41 va_list va;
42 int ret;
43 void *arg;
44
45 va_start(va, request);
46 arg = va_arg(va, void *);
47 ret = old_ioctl(fd, request, arg);
48 va_end(va);
49
50 if (ret < 0 && request == DRM_IOCTL_GEM_CLOSE && errno == EINVAL)
51 failed = 1;
52
53 return ret;
54 }
55
56 static void *
openclose(void * dev)57 openclose(void *dev)
58 {
59 struct nouveau_device *nvdev = dev;
60 struct nouveau_bo *bo = NULL;
61 int i;
62
63 for (i = 0; i < 100000; ++i) {
64 if (!nouveau_bo_prime_handle_ref(nvdev, import_fd, &bo))
65 nouveau_bo_ref(NULL, &bo);
66 }
67 return NULL;
68 }
69
main(int argc,char * argv[])70 int main(int argc, char *argv[])
71 {
72 drmVersionPtr version;
73 const char *device = NULL;
74 int err, fd, fd2;
75 struct nouveau_device *nvdev, *nvdev2;
76 struct nouveau_bo *bo;
77 pthread_t t1, t2;
78
79 old_ioctl = dlsym(RTLD_NEXT, "ioctl");
80
81 if (argc < 2) {
82 fd = drmOpenWithType("nouveau", NULL, DRM_NODE_RENDER);
83 if (fd >= 0)
84 fd2 = drmOpenWithType("nouveau", NULL, DRM_NODE_RENDER);
85 } else {
86 device = argv[1];
87
88 fd = open(device, O_RDWR);
89 if (fd >= 0)
90 fd2 = open(device, O_RDWR);
91 else
92 fd2 = fd = -errno;
93 }
94
95 if (fd < 0) {
96 fprintf(stderr, "Opening nouveau render node failed with %i\n", fd);
97 return device ? -fd : 77;
98 }
99
100 if (fd2 < 0) {
101 fprintf(stderr, "Opening second nouveau render node failed with %i\n", -errno);
102 return errno;
103 }
104
105 version = drmGetVersion(fd);
106 if (version) {
107 printf("Version: %d.%d.%d\n", version->version_major,
108 version->version_minor, version->version_patchlevel);
109 printf(" Name: %s\n", version->name);
110 printf(" Date: %s\n", version->date);
111 printf(" Description: %s\n", version->desc);
112
113 drmFreeVersion(version);
114 }
115
116 err = nouveau_device_wrap(fd, 0, &nvdev);
117 if (!err)
118 err = nouveau_device_wrap(fd2, 0, &nvdev2);
119 if (err < 0)
120 return 1;
121
122 err = nouveau_bo_new(nvdev2, NOUVEAU_BO_GART, 0, 4096, NULL, &bo);
123 if (!err)
124 err = nouveau_bo_set_prime(bo, &import_fd);
125
126 if (!err) {
127 pthread_create(&t1, NULL, openclose, nvdev);
128 pthread_create(&t2, NULL, openclose, nvdev);
129 }
130
131 pthread_join(t1, NULL);
132 pthread_join(t2, NULL);
133
134 close(import_fd);
135 nouveau_bo_ref(NULL, &bo);
136
137 nouveau_device_del(&nvdev2);
138 nouveau_device_del(&nvdev);
139 if (device) {
140 close(fd2);
141 close(fd);
142 } else {
143 drmClose(fd2);
144 drmClose(fd);
145 }
146
147 if (failed)
148 fprintf(stderr, "DRM_IOCTL_GEM_CLOSE failed with EINVAL,\n"
149 "race in opening/closing bo is likely.\n");
150
151 return failed;
152 }
153