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/*
* Copyright © 2021 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.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <errno.h>
#include <string.h>
#include <sys/ioctl.h>
#include "private.h"
drm_public int
drm_tegra_syncpoint_new(struct drm_tegra *drm,
struct drm_tegra_syncpoint **syncptp)
{
struct drm_tegra_syncpoint_allocate args;
struct drm_tegra_syncpoint *syncpt;
int err;
syncpt = calloc(1, sizeof(*syncpt));
if (!syncpt)
return -ENOMEM;
memset(&args, 0, sizeof(args));
err = ioctl(drm->fd, DRM_IOCTL_TEGRA_SYNCPOINT_ALLOCATE, &args);
if (err < 0) {
free(syncpt);
return -errno;
}
syncpt->drm = drm;
syncpt->id = args.id;
*syncptp = syncpt;
return 0;
}
drm_public int
drm_tegra_syncpoint_free(struct drm_tegra_syncpoint *syncpt)
{
struct drm_tegra_syncpoint_free args;
struct drm_tegra *drm = syncpt->drm;
int err;
if (!syncpt)
return -EINVAL;
memset(&args, 0, sizeof(args));
args.id = syncpt->id;
err = ioctl(drm->fd, DRM_IOCTL_TEGRA_SYNCPOINT_FREE, &args);
if (err < 0)
return -errno;
free(syncpt);
return 0;
}
drm_public int
drm_tegra_fence_wait(struct drm_tegra_fence *fence, unsigned long timeout)
{
struct drm_tegra_syncpoint_wait args;
struct drm_tegra *drm = fence->drm;
int err;
memset(&args, 0, sizeof(args));
args.timeout_ns = 0;
args.id = fence->syncpt;
args.threshold = fence->value;
err = ioctl(drm->fd, DRM_IOCTL_TEGRA_SYNCPOINT_WAIT, &args);
if (err < 0)
return -errno;
return 0;
}
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