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Diffstat (limited to '')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_deps.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_deps.h b/drivers/gpu/drm/i915/i915_deps.h new file mode 100644 index 000000000..d76c0106c --- /dev/null +++ b/drivers/gpu/drm/i915/i915_deps.h @@ -0,0 +1,45 @@ +/* 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 |