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
34static __typeof__(ioctl) *old_ioctl;
35static int failed;
36
37static int import_fd;
38
39#if defined(__GLIBC__) || defined(__FreeBSD__)
40int ioctl(int fd, unsigned long request, ...)
41#else
42int 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
60static void *
61openclose(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
74int 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