102 lines
2.6 KiB
C
102 lines
2.6 KiB
C
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/*
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* Copyright © 2021 NVIDIA Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <errno.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include "private.h"
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drm_public int
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drm_tegra_syncpoint_new(struct drm_tegra *drm,
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struct drm_tegra_syncpoint **syncptp)
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{
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struct drm_tegra_syncpoint_allocate args;
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struct drm_tegra_syncpoint *syncpt;
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int err;
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syncpt = calloc(1, sizeof(*syncpt));
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if (!syncpt)
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return -ENOMEM;
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memset(&args, 0, sizeof(args));
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err = ioctl(drm->fd, DRM_IOCTL_TEGRA_SYNCPOINT_ALLOCATE, &args);
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if (err < 0) {
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free(syncpt);
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return -errno;
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}
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syncpt->drm = drm;
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syncpt->id = args.id;
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*syncptp = syncpt;
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return 0;
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}
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drm_public int
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drm_tegra_syncpoint_free(struct drm_tegra_syncpoint *syncpt)
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{
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struct drm_tegra_syncpoint_free args;
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struct drm_tegra *drm = syncpt->drm;
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int err;
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if (!syncpt)
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return -EINVAL;
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memset(&args, 0, sizeof(args));
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args.id = syncpt->id;
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err = ioctl(drm->fd, DRM_IOCTL_TEGRA_SYNCPOINT_FREE, &args);
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if (err < 0)
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return -errno;
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free(syncpt);
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return 0;
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}
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drm_public int
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drm_tegra_fence_wait(struct drm_tegra_fence *fence, unsigned long timeout)
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{
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struct drm_tegra_syncpoint_wait args;
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struct drm_tegra *drm = fence->drm;
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int err;
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memset(&args, 0, sizeof(args));
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args.timeout_ns = 0;
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args.id = fence->syncpt;
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args.threshold = fence->value;
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err = ioctl(drm->fd, DRM_IOCTL_TEGRA_SYNCPOINT_WAIT, &args);
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if (err < 0)
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return -errno;
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return 0;
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}
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