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/*
* Copyright © 2018 NVIDIA Corporation
*
* 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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 <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "tegra.h"
#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
static int channel_open(struct drm_tegra *drm,
struct drm_tegra_channel **channel)
{
static const struct {
enum drm_tegra_class class;
const char *name;
} classes[] = {
{ DRM_TEGRA_VIC, "VIC" },
{ DRM_TEGRA_GR2D, "GR2D" },
};
unsigned int i;
int err;
for (i = 0; i < ARRAY_SIZE(classes); i++) {
err = drm_tegra_channel_open(drm, classes[i].class, channel);
if (err < 0) {
fprintf(stderr, "failed to open channel to %s: %s\n",
classes[i].name, strerror(-err));
continue;
}
break;
}
return err;
}
int main(int argc, char *argv[])
{
const char *device = "/dev/dri/renderD128";
struct drm_tegra_syncpoint *syncpt;
struct drm_tegra_channel *channel;
struct drm_tegra_pushbuf *pushbuf;
struct drm_tegra_job *job;
struct drm_tegra *drm;
uint32_t *ptr;
int fd, err;
if (argc > 1)
device = argv[1];
fd = open(device, O_RDWR);
if (fd < 0) {
fprintf(stderr, "open() failed: %s\n", strerror(errno));
return 1;
}
err = drm_tegra_new(fd, &drm);
if (err < 0) {
fprintf(stderr, "failed to open Tegra device: %s\n", strerror(-err));
close(fd);
return 1;
}
err = drm_tegra_syncpoint_new(drm, &syncpt);
if (err < 0) {
fprintf(stderr, "failed to allocate syncpoint: %s\n", strerror(-err));
drm_tegra_close(drm);
close(fd);
return 1;
}
err = channel_open(drm, &channel);
if (err < 0) {
fprintf(stderr, "failed to open channel: %s\n", strerror(-err));
return 1;
}
err = drm_tegra_job_new(channel, &job);
if (err < 0) {
fprintf(stderr, "failed to create job: %s\n", strerror(-err));
return 1;
}
err = drm_tegra_job_get_pushbuf(job, &pushbuf);
if (err < 0) {
fprintf(stderr, "failed to create push buffer: %s\n", strerror(-err));
return 1;
}
err = drm_tegra_pushbuf_begin(pushbuf, 4, &ptr);
if (err < 0) {
fprintf(stderr, "failed to prepare push buffer: %s\n", strerror(-err));
return 1;
}
err = drm_tegra_pushbuf_sync_cond(pushbuf, &ptr, syncpt,
DRM_TEGRA_SYNC_COND_IMMEDIATE);
if (err < 0) {
fprintf(stderr, "failed to push syncpoint: %s\n", strerror(-err));
return 1;
}
err = drm_tegra_pushbuf_end(pushbuf, ptr);
if (err < 0) {
fprintf(stderr, "failed to update push buffer: %s\n", strerror(-err));
return 1;
}
err = drm_tegra_job_submit(job, NULL);
if (err < 0) {
fprintf(stderr, "failed to submit job: %s\n", strerror(-err));
return 1;
}
err = drm_tegra_job_wait(job, 250000000);
if (err < 0) {
fprintf(stderr, "failed to wait for job: %s\n", strerror(-err));
return 1;
}
drm_tegra_job_free(job);
drm_tegra_channel_close(channel);
drm_tegra_syncpoint_free(syncpt);
drm_tegra_close(drm);
close(fd);
return 0;
}
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