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/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2021 Intel Corporation
*/
#ifndef _I915_DEPS_H_
#define _I915_DEPS_H_
#include <linux/types.h>
struct ttm_operation_ctx;
struct dma_fence;
struct dma_resv;
/**
* struct i915_deps - Collect dependencies into a single dma-fence
* @single: Storage for pointer if the collection is a single fence.
* @fences: Allocated array of fence pointers if more than a single fence;
* otherwise points to the address of @single.
* @num_deps: Current number of dependency fences.
* @fences_size: Size of the @fences array in number of pointers.
* @gfp: Allocation mode.
*/
struct i915_deps {
struct dma_fence *single;
struct dma_fence **fences;
unsigned int num_deps;
unsigned int fences_size;
gfp_t gfp;
};
void i915_deps_init(struct i915_deps *deps, gfp_t gfp);
void i915_deps_fini(struct i915_deps *deps);
int i915_deps_add_dependency(struct i915_deps *deps,
struct dma_fence *fence,
const struct ttm_operation_ctx *ctx);
int i915_deps_add_resv(struct i915_deps *deps, struct dma_resv *resv,
const struct ttm_operation_ctx *ctx);
int i915_deps_sync(const struct i915_deps *deps,
const struct ttm_operation_ctx *ctx);
#endif
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