80 lines
1.4 KiB
C
80 lines
1.4 KiB
C
/*
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* Copyright(c) 2012-2019 Intel Corporation
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* SPDX-License-Identifier: BSD-3-Clause-Clear
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*/
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#ifndef __CONTEXT_H__
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#define __CONTEXT_H__
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#include "linux_kernel_version.h"
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struct bio_vec_iter {
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struct bio_vec *vec;
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uint32_t vec_size;
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uint32_t idx;
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uint32_t offset;
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uint32_t len;
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struct bio_vec *ivec;
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};
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struct blk_data {
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/**
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* @brief Atomic counter for core device
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*/
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atomic_t master_remaining;
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/**
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* @brief Core device request context (core private info)
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*/
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void *master_io_req;
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/**
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* @brief CAS IO with which data is associated
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*/
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struct ocf_io *io;
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/**
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* @brief List item used for IO splitting
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*/
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struct list_head list;
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/**
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* @brief Timestamp of start processing request
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*/
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unsigned long long start_time;
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/**
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* @brief Request data siz
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*/
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uint32_t size;
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/**
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* @brief This filed indicates an error for request
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*/
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int error;
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/**
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* @brief Iterator for accessing data
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*/
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struct bio_vec_iter iter;
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/**
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* @brief Request data
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*/
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struct bio_vec vec[];
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};
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struct blk_data *cas_alloc_blk_data(uint32_t size, gfp_t flags);
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void cas_free_blk_data(struct blk_data *data);
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ctx_data_t *cas_ctx_data_alloc(uint32_t pages);
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ctx_data_t *cas_ctx_data_zalloc(uint32_t pages);
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void cas_ctx_data_free(ctx_data_t *ctx_data);
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void cas_ctx_data_secure_erase(ctx_data_t *ctx_data);
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int cas_initialize_context(void);
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void cas_cleanup_context(void);
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#endif /* __CONTEXT_H__ */
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