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Diffstat (limited to '')
| -rw-r--r-- | tests/vbltest/vbltest.c | 186 |
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; +} |