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1/* SPDX-License-Identifier: MIT */2/*3 * Copyright © 2021 Intel Corporation4 */5 6#ifndef _I915_DEPS_H_7#define _I915_DEPS_H_8 9#include <linux/types.h>10 11struct ttm_operation_ctx;12struct dma_fence;13struct dma_resv;14 15/**16 * struct i915_deps - Collect dependencies into a single dma-fence17 * @single: Storage for pointer if the collection is a single fence.18 * @fences: Allocated array of fence pointers if more than a single fence;19 * otherwise points to the address of @single.20 * @num_deps: Current number of dependency fences.21 * @fences_size: Size of the @fences array in number of pointers.22 * @gfp: Allocation mode.23 */24struct i915_deps {25 struct dma_fence *single;26 struct dma_fence **fences;27 unsigned int num_deps;28 unsigned int fences_size;29 gfp_t gfp;30};31 32void i915_deps_init(struct i915_deps *deps, gfp_t gfp);33 34void i915_deps_fini(struct i915_deps *deps);35 36int i915_deps_add_dependency(struct i915_deps *deps,37 struct dma_fence *fence,38 const struct ttm_operation_ctx *ctx);39 40int i915_deps_add_resv(struct i915_deps *deps, struct dma_resv *resv,41 const struct ttm_operation_ctx *ctx);42 43int i915_deps_sync(const struct i915_deps *deps,44 const struct ttm_operation_ctx *ctx);45#endif46