| 1 | /* SPDX-License-Identifier: GPL-2.0-only OR MIT */ |
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| 2 | /* Copyright (c) 2023 Imagination Technologies Ltd. */ |
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| 3 | |
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| 4 | #ifndef PVR_SYNC_H |
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| 5 | #define PVR_SYNC_H |
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| 6 | |
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| 7 | #include <uapi/drm/pvr_drm.h> |
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| 8 | |
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| 9 | /* Forward declaration from <linux/xarray.h>. */ |
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| 10 | struct xarray; |
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| 11 | |
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| 12 | /* Forward declaration from <drm/drm_file.h>. */ |
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| 13 | struct drm_file; |
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| 14 | |
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| 15 | /* Forward declaration from <drm/gpu_scheduler.h>. */ |
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| 16 | struct drm_sched_job; |
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| 17 | |
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| 18 | /* Forward declaration from "pvr_device.h". */ |
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| 19 | struct pvr_file; |
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| 20 | |
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| 21 | /** |
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| 22 | * struct pvr_sync_signal - Object encoding a syncobj signal operation |
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| 23 | * |
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| 24 | * The job submission logic collects all signal operations in an array of |
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| 25 | * pvr_sync_signal objects. This array also serves as a cache to get the |
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| 26 | * latest dma_fence when multiple jobs are submitted at once, and one job |
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| 27 | * signals a syncobj point that's later waited on by a subsequent job. |
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| 28 | */ |
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| 29 | struct pvr_sync_signal { |
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| 30 | /** @handle: Handle of the syncobj to signal. */ |
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| 31 | u32 handle; |
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| 32 | |
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| 33 | /** |
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| 34 | * @point: Point to signal in the syncobj. |
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| 35 | * |
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| 36 | * Only relevant for timeline syncobjs. |
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| 37 | */ |
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| 38 | u64 point; |
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| 39 | |
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| 40 | /** @syncobj: Syncobj retrieved from the handle. */ |
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| 41 | struct drm_syncobj *syncobj; |
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| 42 | |
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| 43 | /** |
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| 44 | * @chain: Chain object used to link the new fence with the |
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| 45 | * existing timeline syncobj. |
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| 46 | * |
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| 47 | * Should be zero when manipulating a regular syncobj. |
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| 48 | */ |
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| 49 | struct dma_fence_chain *chain; |
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| 50 | |
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| 51 | /** |
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| 52 | * @fence: New fence object to attach to the syncobj. |
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| 53 | * |
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| 54 | * This pointer starts with the current fence bound to |
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| 55 | * the <handle,point> pair. |
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| 56 | */ |
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| 57 | struct dma_fence *fence; |
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| 58 | }; |
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| 59 | |
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| 60 | void |
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| 61 | pvr_sync_signal_array_cleanup(struct xarray *array); |
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| 62 | |
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| 63 | int |
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| 64 | pvr_sync_signal_array_collect_ops(struct xarray *array, |
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| 65 | struct drm_file *file, |
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| 66 | u32 sync_op_count, |
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| 67 | const struct drm_pvr_sync_op *sync_ops); |
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| 68 | |
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| 69 | int |
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| 70 | pvr_sync_signal_array_update_fences(struct xarray *array, |
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| 71 | u32 sync_op_count, |
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| 72 | const struct drm_pvr_sync_op *sync_ops, |
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| 73 | struct dma_fence *done_fence); |
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| 74 | |
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| 75 | void |
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| 76 | pvr_sync_signal_array_push_fences(struct xarray *array); |
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| 77 | |
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| 78 | int |
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| 79 | pvr_sync_add_deps_to_job(struct pvr_file *pvr_file, struct drm_sched_job *job, |
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| 80 | u32 sync_op_count, |
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| 81 | const struct drm_pvr_sync_op *sync_ops, |
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| 82 | struct xarray *signal_array); |
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| 83 | |
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| 84 | #endif /* PVR_SYNC_H */ |
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| 85 | |
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