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-rw-r--r--tests/vbltest/vbltest.c186
1 files changed, 186 insertions, 0 deletions
diff --git a/tests/vbltest/vbltest.c b/tests/vbltest/vbltest.c
new file mode 100644
index 0000000..1c2b519
--- /dev/null
+++ b/tests/vbltest/vbltest.c
@@ -0,0 +1,186 @@
+/*
+ * DRM based vblank test program
+ * Copyright 2008 Tungsten Graphics
+ * Jakob Bornecrantz <jakob@tungstengraphics.com>
+ * Copyright 2008 Intel Corporation
+ * Jesse Barnes <jesse.barnes@intel.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <poll.h>
+#include <sys/time.h>
+#if HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+
+#include "xf86drm.h"
+#include "xf86drmMode.h"
+
+#include "util/common.h"
+#include "util/kms.h"
+
+extern char *optarg;
+extern int optind, opterr, optopt;
+static char optstr[] = "D:M:s";
+
+int secondary = 0;
+
+struct vbl_info {
+ unsigned int vbl_count;
+ struct timeval start;
+};
+
+static void vblank_handler(int fd, unsigned int frame, unsigned int sec,
+ unsigned int usec, void *data)
+{
+ drmVBlank vbl;
+ struct timeval end;
+ struct vbl_info *info = data;
+ double t;
+
+ vbl.request.type = DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT;
+ if (secondary)
+ vbl.request.type |= DRM_VBLANK_SECONDARY;
+ vbl.request.sequence = 1;
+ vbl.request.signal = (unsigned long)data;
+
+ drmWaitVBlank(fd, &vbl);
+
+ info->vbl_count++;
+
+ if (info->vbl_count == 60) {
+ gettimeofday(&end, NULL);
+ t = end.tv_sec + end.tv_usec * 1e-6 -
+ (info->start.tv_sec + info->start.tv_usec * 1e-6);
+ fprintf(stderr, "freq: %.02fHz\n", info->vbl_count / t);
+ info->vbl_count = 0;
+ info->start = end;
+ }
+}
+
+static void usage(char *name)
+{
+ fprintf(stderr, "usage: %s [-DMs]\n", name);
+ fprintf(stderr, "\n");
+ fprintf(stderr, "options:\n");
+ fprintf(stderr, " -D DEVICE open the given device\n");
+ fprintf(stderr, " -M MODULE open the given module\n");
+ fprintf(stderr, " -s use secondary pipe\n");
+ exit(0);
+}
+
+int main(int argc, char **argv)
+{
+ const char *device = NULL, *module = NULL;
+ int c, fd, ret;
+ drmVBlank vbl;
+ drmEventContext evctx;
+ struct vbl_info handler_info;
+
+ opterr = 0;
+ while ((c = getopt(argc, argv, optstr)) != -1) {
+ switch (c) {
+ case 'D':
+ device = optarg;
+ break;
+ case 'M':
+ module = optarg;
+ break;
+ case 's':
+ secondary = 1;
+ break;
+ default:
+ usage(argv[0]);
+ break;
+ }
+ }
+
+ fd = util_open(device, module);
+ if (fd < 0)
+ return 1;
+
+ /* Get current count first */
+ vbl.request.type = DRM_VBLANK_RELATIVE;
+ if (secondary)
+ vbl.request.type |= DRM_VBLANK_SECONDARY;
+ vbl.request.sequence = 0;
+ ret = drmWaitVBlank(fd, &vbl);
+ if (ret != 0) {
+ printf("drmWaitVBlank (relative) failed ret: %i\n", ret);
+ return -1;
+ }
+
+ printf("starting count: %d\n", vbl.request.sequence);
+
+ handler_info.vbl_count = 0;
+ gettimeofday(&handler_info.start, NULL);
+
+ /* Queue an event for frame + 1 */
+ vbl.request.type = DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT;
+ if (secondary)
+ vbl.request.type |= DRM_VBLANK_SECONDARY;
+ vbl.request.sequence = 1;
+ vbl.request.signal = (unsigned long)&handler_info;
+ ret = drmWaitVBlank(fd, &vbl);
+ if (ret != 0) {
+ printf("drmWaitVBlank (relative, event) failed ret: %i\n", ret);
+ return -1;
+ }
+
+ /* Set up our event handler */
+ memset(&evctx, 0, sizeof evctx);
+ evctx.version = DRM_EVENT_CONTEXT_VERSION;
+ evctx.vblank_handler = vblank_handler;
+ evctx.page_flip_handler = NULL;
+
+ /* Poll for events */
+ while (1) {
+ struct timeval timeout = { .tv_sec = 3, .tv_usec = 0 };
+ fd_set fds;
+
+ FD_ZERO(&fds);
+ FD_SET(0, &fds);
+ FD_SET(fd, &fds);
+ ret = select(fd + 1, &fds, NULL, NULL, &timeout);
+
+ if (ret <= 0) {
+ fprintf(stderr, "select timed out or error (ret %d)\n",
+ ret);
+ continue;
+ } else if (FD_ISSET(0, &fds)) {
+ break;
+ }
+
+ ret = drmHandleEvent(fd, &evctx);
+ if (ret != 0) {
+ printf("drmHandleEvent failed: %i\n", ret);
+ return -1;
+ }
+ }
+
+ return 0;
+}