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