85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only OR MIT */
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/* Copyright (c) 2023 Imagination Technologies Ltd. */
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#ifndef PVR_SYNC_H
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#define PVR_SYNC_H
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#include <uapi/drm/pvr_drm.h>
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/* Forward declaration from <linux/xarray.h>. */
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struct xarray;
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/* Forward declaration from <drm/drm_file.h>. */
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struct drm_file;
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/* Forward declaration from <drm/gpu_scheduler.h>. */
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struct drm_sched_job;
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/* Forward declaration from "pvr_device.h". */
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struct pvr_file;
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/**
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* struct pvr_sync_signal - Object encoding a syncobj signal operation
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*
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* The job submission logic collects all signal operations in an array of
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* pvr_sync_signal objects. This array also serves as a cache to get the
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* latest dma_fence when multiple jobs are submitted at once, and one job
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* signals a syncobj point that's later waited on by a subsequent job.
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*/
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struct pvr_sync_signal {
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/** @handle: Handle of the syncobj to signal. */
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u32 handle;
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/**
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* @point: Point to signal in the syncobj.
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*
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* Only relevant for timeline syncobjs.
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*/
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u64 point;
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/** @syncobj: Syncobj retrieved from the handle. */
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struct drm_syncobj *syncobj;
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/**
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* @chain: Chain object used to link the new fence with the
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* existing timeline syncobj.
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*
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* Should be zero when manipulating a regular syncobj.
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*/
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struct dma_fence_chain *chain;
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/**
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* @fence: New fence object to attach to the syncobj.
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*
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* This pointer starts with the current fence bound to
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* the <handle,point> pair.
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*/
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struct dma_fence *fence;
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};
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void
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pvr_sync_signal_array_cleanup(struct xarray *array);
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int
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pvr_sync_signal_array_collect_ops(struct xarray *array,
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struct drm_file *file,
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u32 sync_op_count,
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const struct drm_pvr_sync_op *sync_ops);
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int
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pvr_sync_signal_array_update_fences(struct xarray *array,
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u32 sync_op_count,
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const struct drm_pvr_sync_op *sync_ops,
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struct dma_fence *done_fence);
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void
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pvr_sync_signal_array_push_fences(struct xarray *array);
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int
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pvr_sync_add_deps_to_job(struct pvr_file *pvr_file, struct drm_sched_job *job,
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u32 sync_op_count,
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const struct drm_pvr_sync_op *sync_ops,
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struct xarray *signal_array);
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#endif /* PVR_SYNC_H */
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