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1/* SPDX-License-Identifier: GPL-2.0-only OR MIT */2/* Copyright (c) 2023 Imagination Technologies Ltd. */3 4#ifndef PVR_SYNC_H5#define PVR_SYNC_H6 7#include <uapi/drm/pvr_drm.h>8 9/* Forward declaration from <linux/xarray.h>. */10struct xarray;11 12/* Forward declaration from <drm/drm_file.h>. */13struct drm_file;14 15/* Forward declaration from <drm/gpu_scheduler.h>. */16struct drm_sched_job;17 18/* Forward declaration from "pvr_device.h". */19struct pvr_file;20 21/**22 * struct pvr_sync_signal - Object encoding a syncobj signal operation23 *24 * The job submission logic collects all signal operations in an array of25 * pvr_sync_signal objects. This array also serves as a cache to get the26 * latest dma_fence when multiple jobs are submitted at once, and one job27 * signals a syncobj point that's later waited on by a subsequent job.28 */29struct pvr_sync_signal {30 /** @handle: Handle of the syncobj to signal. */31 u32 handle;32 33 /**34 * @point: Point to signal in the syncobj.35 *36 * Only relevant for timeline syncobjs.37 */38 u64 point;39 40 /** @syncobj: Syncobj retrieved from the handle. */41 struct drm_syncobj *syncobj;42 43 /**44 * @chain: Chain object used to link the new fence with the45 * existing timeline syncobj.46 *47 * Should be zero when manipulating a regular syncobj.48 */49 struct dma_fence_chain *chain;50 51 /**52 * @fence: New fence object to attach to the syncobj.53 *54 * This pointer starts with the current fence bound to55 * the <handle,point> pair.56 */57 struct dma_fence *fence;58};59 60void61pvr_sync_signal_array_cleanup(struct xarray *array);62 63int64pvr_sync_signal_array_collect_ops(struct xarray *array,65 struct drm_file *file,66 u32 sync_op_count,67 const struct drm_pvr_sync_op *sync_ops);68 69int70pvr_sync_signal_array_update_fences(struct xarray *array,71 u32 sync_op_count,72 const struct drm_pvr_sync_op *sync_ops,73 struct dma_fence *done_fence);74 75void76pvr_sync_signal_array_push_fences(struct xarray *array);77 78int79pvr_sync_add_deps_to_job(struct pvr_file *pvr_file, struct drm_sched_job *job,80 u32 sync_op_count,81 const struct drm_pvr_sync_op *sync_ops,82 struct xarray *signal_array);83 84#endif /* PVR_SYNC_H */85