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63cf4cad73
Since it's starting to be used outside the i915 TTM move code, move it to a separate set of files. v2: - Update the documentation. v4: - Rebase. Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211221200050.436316-4-thomas.hellstrom@linux.intel.com
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2021 Intel Corporation
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*/
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#ifndef _I915_DEPS_H_
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#define _I915_DEPS_H_
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#include <linux/types.h>
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struct ttm_operation_ctx;
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struct dma_fence;
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struct dma_resv;
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/**
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* struct i915_deps - Collect dependencies into a single dma-fence
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* @single: Storage for pointer if the collection is a single fence.
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* @fences: Allocated array of fence pointers if more than a single fence;
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* otherwise points to the address of @single.
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* @num_deps: Current number of dependency fences.
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* @fences_size: Size of the @fences array in number of pointers.
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* @gfp: Allocation mode.
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*/
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struct i915_deps {
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struct dma_fence *single;
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struct dma_fence **fences;
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unsigned int num_deps;
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unsigned int fences_size;
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gfp_t gfp;
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};
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void i915_deps_init(struct i915_deps *deps, gfp_t gfp);
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void i915_deps_fini(struct i915_deps *deps);
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int i915_deps_add_dependency(struct i915_deps *deps,
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struct dma_fence *fence,
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const struct ttm_operation_ctx *ctx);
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int i915_deps_add_resv(struct i915_deps *deps, struct dma_resv *resv,
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const struct ttm_operation_ctx *ctx);
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int i915_deps_sync(const struct i915_deps *deps,
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const struct ttm_operation_ctx *ctx);
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#endif
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