81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/*
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* Copyright(c) 2012-2018 Intel Corporation
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* SPDX-License-Identifier: BSD-3-Clause-Clear
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*/
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#ifndef UTILS_IO_H_
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#define UTILS_IO_H_
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#include "../ocf_request.h"
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/**
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* Checks if 2 IOs are overlapping.
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* @param start1 start of first range (inclusive)
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* @param end1 end of first range (exclusive)
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* @param start2 start of second range (inclusive)
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* @param end2 end of second range (exclusive)
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* @return 0 in case overlap is not detected, otherwise 1
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*/
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static inline int ocf_io_range_overlaps(uint32_t start1, uint32_t end1,
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uint32_t start2, uint32_t end2)
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{
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if (start2 <= start1 && end2 >= start1)
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return 1;
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if (start2 >= start1 && end1 >= start2)
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return 1;
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return 0;
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}
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/**
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* Checks if 2 IOs are overlapping.
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* @param start1 start of first range (inclusive)
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* @param count1 no of bytes, cachelines (etc) for first range
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* @param start2 start of second range (inclusive)
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* @param count2 no of bytes, cachelines (etc) for second range
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* @return 0 in case overlap is not detected, otherwise 1
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*/
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static inline int ocf_io_overlaps(uint32_t start1, uint32_t count1,
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uint32_t start2, uint32_t count2)
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{
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return ocf_io_range_overlaps(start1, start1 + count1 - 1, start2,
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start2 + count2 - 1);
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}
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int ocf_submit_io_wait(struct ocf_io *io);
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int ocf_submit_obj_flush_wait(ocf_data_obj_t obj);
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int ocf_submit_obj_discard_wait(ocf_data_obj_t obj, uint64_t addr,
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uint64_t length);
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int ocf_submit_write_zeroes_wait(ocf_data_obj_t obj, uint64_t addr,
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uint64_t length);
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int ocf_submit_cache_page(struct ocf_cache *cache, uint64_t addr,
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int dir, void *buffer);
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void ocf_submit_obj_req(ocf_data_obj_t obj, struct ocf_request *req,
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ocf_req_end_t callback);
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void ocf_submit_cache_reqs(struct ocf_cache *cache,
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struct ocf_map_info *map_info, struct ocf_request *req, int dir,
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unsigned int reqs, ocf_req_end_t callback);
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static inline struct ocf_io *ocf_new_cache_io(struct ocf_cache *cache)
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{
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return ocf_dobj_new_io(&cache->device->obj);
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}
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static inline struct ocf_io *ocf_new_core_io(struct ocf_cache *cache,
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ocf_core_id_t core_id)
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{
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ENV_BUG_ON(core_id >= OCF_CORE_MAX);
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return ocf_dobj_new_io(&cache->core_obj[core_id].obj);
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}
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#endif /* UTILS_IO_H_ */
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