xref: /aosp_15_r20/external/libdrm/tests/vbltest/vbltest.c (revision 7688df22e49036ff52a766b7101da3a49edadb8c)
1*7688df22SAndroid Build Coastguard Worker /*
2*7688df22SAndroid Build Coastguard Worker  * DRM based vblank test program
3*7688df22SAndroid Build Coastguard Worker  * Copyright 2008 Tungsten Graphics
4*7688df22SAndroid Build Coastguard Worker  *   Jakob Bornecrantz <[email protected]>
5*7688df22SAndroid Build Coastguard Worker  * Copyright 2008 Intel Corporation
6*7688df22SAndroid Build Coastguard Worker  *   Jesse Barnes <[email protected]>
7*7688df22SAndroid Build Coastguard Worker  *
8*7688df22SAndroid Build Coastguard Worker  * Permission is hereby granted, free of charge, to any person obtaining a
9*7688df22SAndroid Build Coastguard Worker  * copy of this software and associated documentation files (the "Software"),
10*7688df22SAndroid Build Coastguard Worker  * to deal in the Software without restriction, including without limitation
11*7688df22SAndroid Build Coastguard Worker  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12*7688df22SAndroid Build Coastguard Worker  * and/or sell copies of the Software, and to permit persons to whom the
13*7688df22SAndroid Build Coastguard Worker  * Software is furnished to do so, subject to the following conditions:
14*7688df22SAndroid Build Coastguard Worker  *
15*7688df22SAndroid Build Coastguard Worker  * The above copyright notice and this permission notice shall be included in
16*7688df22SAndroid Build Coastguard Worker  * all copies or substantial portions of the Software.
17*7688df22SAndroid Build Coastguard Worker  *
18*7688df22SAndroid Build Coastguard Worker  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19*7688df22SAndroid Build Coastguard Worker  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20*7688df22SAndroid Build Coastguard Worker  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21*7688df22SAndroid Build Coastguard Worker  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22*7688df22SAndroid Build Coastguard Worker  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
23*7688df22SAndroid Build Coastguard Worker  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24*7688df22SAndroid Build Coastguard Worker  * IN THE SOFTWARE.
25*7688df22SAndroid Build Coastguard Worker  */
26*7688df22SAndroid Build Coastguard Worker 
27*7688df22SAndroid Build Coastguard Worker #include <assert.h>
28*7688df22SAndroid Build Coastguard Worker #include <stdio.h>
29*7688df22SAndroid Build Coastguard Worker #include <stdlib.h>
30*7688df22SAndroid Build Coastguard Worker #include <stdint.h>
31*7688df22SAndroid Build Coastguard Worker #include <unistd.h>
32*7688df22SAndroid Build Coastguard Worker #include <string.h>
33*7688df22SAndroid Build Coastguard Worker #include <errno.h>
34*7688df22SAndroid Build Coastguard Worker #include <poll.h>
35*7688df22SAndroid Build Coastguard Worker #include <sys/time.h>
36*7688df22SAndroid Build Coastguard Worker #if HAVE_SYS_SELECT_H
37*7688df22SAndroid Build Coastguard Worker #include <sys/select.h>
38*7688df22SAndroid Build Coastguard Worker #endif
39*7688df22SAndroid Build Coastguard Worker 
40*7688df22SAndroid Build Coastguard Worker #include "xf86drm.h"
41*7688df22SAndroid Build Coastguard Worker #include "xf86drmMode.h"
42*7688df22SAndroid Build Coastguard Worker 
43*7688df22SAndroid Build Coastguard Worker #include "util/common.h"
44*7688df22SAndroid Build Coastguard Worker #include "util/kms.h"
45*7688df22SAndroid Build Coastguard Worker 
46*7688df22SAndroid Build Coastguard Worker extern char *optarg;
47*7688df22SAndroid Build Coastguard Worker extern int optind, opterr, optopt;
48*7688df22SAndroid Build Coastguard Worker static char optstr[] = "D:M:s";
49*7688df22SAndroid Build Coastguard Worker 
50*7688df22SAndroid Build Coastguard Worker int secondary = 0;
51*7688df22SAndroid Build Coastguard Worker 
52*7688df22SAndroid Build Coastguard Worker struct vbl_info {
53*7688df22SAndroid Build Coastguard Worker 	unsigned int vbl_count;
54*7688df22SAndroid Build Coastguard Worker 	struct timeval start;
55*7688df22SAndroid Build Coastguard Worker };
56*7688df22SAndroid Build Coastguard Worker 
vblank_handler(int fd,unsigned int frame,unsigned int sec,unsigned int usec,void * data)57*7688df22SAndroid Build Coastguard Worker static void vblank_handler(int fd, unsigned int frame, unsigned int sec,
58*7688df22SAndroid Build Coastguard Worker 			   unsigned int usec, void *data)
59*7688df22SAndroid Build Coastguard Worker {
60*7688df22SAndroid Build Coastguard Worker 	drmVBlank vbl;
61*7688df22SAndroid Build Coastguard Worker 	struct timeval end;
62*7688df22SAndroid Build Coastguard Worker 	struct vbl_info *info = data;
63*7688df22SAndroid Build Coastguard Worker 	double t;
64*7688df22SAndroid Build Coastguard Worker 
65*7688df22SAndroid Build Coastguard Worker 	vbl.request.type = DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT;
66*7688df22SAndroid Build Coastguard Worker 	if (secondary)
67*7688df22SAndroid Build Coastguard Worker 		vbl.request.type |= DRM_VBLANK_SECONDARY;
68*7688df22SAndroid Build Coastguard Worker 	vbl.request.sequence = 1;
69*7688df22SAndroid Build Coastguard Worker 	vbl.request.signal = (unsigned long)data;
70*7688df22SAndroid Build Coastguard Worker 
71*7688df22SAndroid Build Coastguard Worker 	drmWaitVBlank(fd, &vbl);
72*7688df22SAndroid Build Coastguard Worker 
73*7688df22SAndroid Build Coastguard Worker 	info->vbl_count++;
74*7688df22SAndroid Build Coastguard Worker 
75*7688df22SAndroid Build Coastguard Worker 	if (info->vbl_count == 60) {
76*7688df22SAndroid Build Coastguard Worker 		gettimeofday(&end, NULL);
77*7688df22SAndroid Build Coastguard Worker 		t = end.tv_sec + end.tv_usec * 1e-6 -
78*7688df22SAndroid Build Coastguard Worker 			(info->start.tv_sec + info->start.tv_usec * 1e-6);
79*7688df22SAndroid Build Coastguard Worker 		fprintf(stderr, "freq: %.02fHz\n", info->vbl_count / t);
80*7688df22SAndroid Build Coastguard Worker 		info->vbl_count = 0;
81*7688df22SAndroid Build Coastguard Worker 		info->start = end;
82*7688df22SAndroid Build Coastguard Worker 	}
83*7688df22SAndroid Build Coastguard Worker }
84*7688df22SAndroid Build Coastguard Worker 
usage(char * name)85*7688df22SAndroid Build Coastguard Worker static void usage(char *name)
86*7688df22SAndroid Build Coastguard Worker {
87*7688df22SAndroid Build Coastguard Worker 	fprintf(stderr, "usage: %s [-DMs]\n", name);
88*7688df22SAndroid Build Coastguard Worker 	fprintf(stderr, "\n");
89*7688df22SAndroid Build Coastguard Worker 	fprintf(stderr, "options:\n");
90*7688df22SAndroid Build Coastguard Worker 	fprintf(stderr, "  -D DEVICE  open the given device\n");
91*7688df22SAndroid Build Coastguard Worker 	fprintf(stderr, "  -M MODULE  open the given module\n");
92*7688df22SAndroid Build Coastguard Worker 	fprintf(stderr, "  -s         use secondary pipe\n");
93*7688df22SAndroid Build Coastguard Worker 	exit(0);
94*7688df22SAndroid Build Coastguard Worker }
95*7688df22SAndroid Build Coastguard Worker 
main(int argc,char ** argv)96*7688df22SAndroid Build Coastguard Worker int main(int argc, char **argv)
97*7688df22SAndroid Build Coastguard Worker {
98*7688df22SAndroid Build Coastguard Worker 	const char *device = NULL, *module = NULL;
99*7688df22SAndroid Build Coastguard Worker 	int c, fd, ret;
100*7688df22SAndroid Build Coastguard Worker 	drmVBlank vbl;
101*7688df22SAndroid Build Coastguard Worker 	drmEventContext evctx;
102*7688df22SAndroid Build Coastguard Worker 	struct vbl_info handler_info;
103*7688df22SAndroid Build Coastguard Worker 
104*7688df22SAndroid Build Coastguard Worker 	opterr = 0;
105*7688df22SAndroid Build Coastguard Worker 	while ((c = getopt(argc, argv, optstr)) != -1) {
106*7688df22SAndroid Build Coastguard Worker 		switch (c) {
107*7688df22SAndroid Build Coastguard Worker 		case 'D':
108*7688df22SAndroid Build Coastguard Worker 			device = optarg;
109*7688df22SAndroid Build Coastguard Worker 			break;
110*7688df22SAndroid Build Coastguard Worker 		case 'M':
111*7688df22SAndroid Build Coastguard Worker 			module = optarg;
112*7688df22SAndroid Build Coastguard Worker 			break;
113*7688df22SAndroid Build Coastguard Worker 		case 's':
114*7688df22SAndroid Build Coastguard Worker 			secondary = 1;
115*7688df22SAndroid Build Coastguard Worker 			break;
116*7688df22SAndroid Build Coastguard Worker 		default:
117*7688df22SAndroid Build Coastguard Worker 			usage(argv[0]);
118*7688df22SAndroid Build Coastguard Worker 			break;
119*7688df22SAndroid Build Coastguard Worker 		}
120*7688df22SAndroid Build Coastguard Worker 	}
121*7688df22SAndroid Build Coastguard Worker 
122*7688df22SAndroid Build Coastguard Worker 	fd = util_open(device, module);
123*7688df22SAndroid Build Coastguard Worker 	if (fd < 0)
124*7688df22SAndroid Build Coastguard Worker 		return 1;
125*7688df22SAndroid Build Coastguard Worker 
126*7688df22SAndroid Build Coastguard Worker 	/* Get current count first */
127*7688df22SAndroid Build Coastguard Worker 	vbl.request.type = DRM_VBLANK_RELATIVE;
128*7688df22SAndroid Build Coastguard Worker 	if (secondary)
129*7688df22SAndroid Build Coastguard Worker 		vbl.request.type |= DRM_VBLANK_SECONDARY;
130*7688df22SAndroid Build Coastguard Worker 	vbl.request.sequence = 0;
131*7688df22SAndroid Build Coastguard Worker 	ret = drmWaitVBlank(fd, &vbl);
132*7688df22SAndroid Build Coastguard Worker 	if (ret != 0) {
133*7688df22SAndroid Build Coastguard Worker 		printf("drmWaitVBlank (relative) failed ret: %i\n", ret);
134*7688df22SAndroid Build Coastguard Worker 		return -1;
135*7688df22SAndroid Build Coastguard Worker 	}
136*7688df22SAndroid Build Coastguard Worker 
137*7688df22SAndroid Build Coastguard Worker 	printf("starting count: %d\n", vbl.request.sequence);
138*7688df22SAndroid Build Coastguard Worker 
139*7688df22SAndroid Build Coastguard Worker 	handler_info.vbl_count = 0;
140*7688df22SAndroid Build Coastguard Worker 	gettimeofday(&handler_info.start, NULL);
141*7688df22SAndroid Build Coastguard Worker 
142*7688df22SAndroid Build Coastguard Worker 	/* Queue an event for frame + 1 */
143*7688df22SAndroid Build Coastguard Worker 	vbl.request.type = DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT;
144*7688df22SAndroid Build Coastguard Worker 	if (secondary)
145*7688df22SAndroid Build Coastguard Worker 		vbl.request.type |= DRM_VBLANK_SECONDARY;
146*7688df22SAndroid Build Coastguard Worker 	vbl.request.sequence = 1;
147*7688df22SAndroid Build Coastguard Worker 	vbl.request.signal = (unsigned long)&handler_info;
148*7688df22SAndroid Build Coastguard Worker 	ret = drmWaitVBlank(fd, &vbl);
149*7688df22SAndroid Build Coastguard Worker 	if (ret != 0) {
150*7688df22SAndroid Build Coastguard Worker 		printf("drmWaitVBlank (relative, event) failed ret: %i\n", ret);
151*7688df22SAndroid Build Coastguard Worker 		return -1;
152*7688df22SAndroid Build Coastguard Worker 	}
153*7688df22SAndroid Build Coastguard Worker 
154*7688df22SAndroid Build Coastguard Worker 	/* Set up our event handler */
155*7688df22SAndroid Build Coastguard Worker 	memset(&evctx, 0, sizeof evctx);
156*7688df22SAndroid Build Coastguard Worker 	evctx.version = DRM_EVENT_CONTEXT_VERSION;
157*7688df22SAndroid Build Coastguard Worker 	evctx.vblank_handler = vblank_handler;
158*7688df22SAndroid Build Coastguard Worker 	evctx.page_flip_handler = NULL;
159*7688df22SAndroid Build Coastguard Worker 
160*7688df22SAndroid Build Coastguard Worker 	/* Poll for events */
161*7688df22SAndroid Build Coastguard Worker 	while (1) {
162*7688df22SAndroid Build Coastguard Worker 		struct timeval timeout = { .tv_sec = 3, .tv_usec = 0 };
163*7688df22SAndroid Build Coastguard Worker 		fd_set fds;
164*7688df22SAndroid Build Coastguard Worker 
165*7688df22SAndroid Build Coastguard Worker 		FD_ZERO(&fds);
166*7688df22SAndroid Build Coastguard Worker 		FD_SET(0, &fds);
167*7688df22SAndroid Build Coastguard Worker 		FD_SET(fd, &fds);
168*7688df22SAndroid Build Coastguard Worker 		ret = select(fd + 1, &fds, NULL, NULL, &timeout);
169*7688df22SAndroid Build Coastguard Worker 
170*7688df22SAndroid Build Coastguard Worker 		if (ret <= 0) {
171*7688df22SAndroid Build Coastguard Worker 			fprintf(stderr, "select timed out or error (ret %d)\n",
172*7688df22SAndroid Build Coastguard Worker 				ret);
173*7688df22SAndroid Build Coastguard Worker 			continue;
174*7688df22SAndroid Build Coastguard Worker 		} else if (FD_ISSET(0, &fds)) {
175*7688df22SAndroid Build Coastguard Worker 			break;
176*7688df22SAndroid Build Coastguard Worker 		}
177*7688df22SAndroid Build Coastguard Worker 
178*7688df22SAndroid Build Coastguard Worker 		ret = drmHandleEvent(fd, &evctx);
179*7688df22SAndroid Build Coastguard Worker 		if (ret != 0) {
180*7688df22SAndroid Build Coastguard Worker 			printf("drmHandleEvent failed: %i\n", ret);
181*7688df22SAndroid Build Coastguard Worker 			return -1;
182*7688df22SAndroid Build Coastguard Worker 		}
183*7688df22SAndroid Build Coastguard Worker 	}
184*7688df22SAndroid Build Coastguard Worker 
185*7688df22SAndroid Build Coastguard Worker 	return 0;
186*7688df22SAndroid Build Coastguard Worker }
187