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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.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <errno.h>
#include <stdbool.h>
#include <stdio.h> /* XXX remove */
#include <string.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/poll.h>
#include "private.h"
static int drm_tegra_syncobj_destroy(struct drm_tegra *drm, uint32_t handle)
{
struct drm_syncobj_destroy args;
int err;
memset(&args, 0, sizeof(args));
args.handle = handle;
err = ioctl(drm->fd, DRM_IOCTL_SYNCOBJ_DESTROY, &args);
if (err < 0)
return -errno;
return 0;
}
int drm_tegra_fence_wait(struct drm_tegra *drm, struct drm_tegra_fence *fence)
{
int err;
if ((fence->flags & DRM_TEGRA_FENCE_EMIT) == 0)
return 0;
printf("fence: %p\n", fence);
printf(" handle: %u\n", fence->handle);
printf(" flags: %x\n", fence->flags);
printf(" offset: %x\n", fence->offset);
printf(" index: %u\n", fence->index);
printf(" value: %u\n", fence->value);
if (fence->flags & DRM_TEGRA_FENCE_FD) {
while (true) {
struct pollfd fds = {
.fd = fence->handle,
.events = POLLIN,
};
err = poll(&fds, 1, -1);
if (err > 0) {
if (fds.revents & (POLLERR | POLLNVAL))
err = -EINVAL;
else
err = 0;
break;
}
if (err == 0) {
err = -ETIMEDOUT;
break;
}
if (errno != EINTR && errno != EAGAIN) {
err = -errno;
break;
}
}
close(fence->handle);
} else {
struct drm_syncobj_wait args;
memset(&args, 0, sizeof(args));
args.handles = (uintptr_t)&fence->handle;
args.count_handles = 1;
args.timeout_nsec = -1;
args.flags = DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL;
err = ioctl(drm->fd, DRM_IOCTL_SYNCOBJ_WAIT, &args);
if (err < 0)
err = -errno;
drm_tegra_syncobj_destroy(drm, fence->handle);
}
return err;
}
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