/*
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* Header file for multi buffer SHA256 algorithm manager
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2016 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* Contact Information:
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* Megha Dey <megha.dey@linux.intel.com>
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*
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* BSD LICENSE
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*
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* Copyright(c) 2016 Intel Corporation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __SHA_MB_MGR_H
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#define __SHA_MB_MGR_H
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#include <linux/types.h>
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#define NUM_SHA256_DIGEST_WORDS 8
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enum job_sts { STS_UNKNOWN = 0,
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STS_BEING_PROCESSED = 1,
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STS_COMPLETED = 2,
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STS_INTERNAL_ERROR = 3,
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STS_ERROR = 4
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};
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struct job_sha256 {
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u8 *buffer;
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u32 len;
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u32 result_digest[NUM_SHA256_DIGEST_WORDS] __aligned(32);
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enum job_sts status;
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void *user_data;
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};
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/* SHA256 out-of-order scheduler */
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/* typedef uint32_t sha8_digest_array[8][8]; */
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struct sha256_args_x8 {
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uint32_t digest[8][8];
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uint8_t *data_ptr[8];
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};
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struct sha256_lane_data {
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struct job_sha256 *job_in_lane;
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};
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struct sha256_mb_mgr {
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struct sha256_args_x8 args;
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uint32_t lens[8];
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/* each byte is index (0...7) of unused lanes */
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uint64_t unused_lanes;
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/* byte 4 is set to FF as a flag */
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struct sha256_lane_data ldata[8];
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};
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#define SHA256_MB_MGR_NUM_LANES_AVX2 8
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void sha256_mb_mgr_init_avx2(struct sha256_mb_mgr *state);
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struct job_sha256 *sha256_mb_mgr_submit_avx2(struct sha256_mb_mgr *state,
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struct job_sha256 *job);
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struct job_sha256 *sha256_mb_mgr_flush_avx2(struct sha256_mb_mgr *state);
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struct job_sha256 *sha256_mb_mgr_get_comp_job_avx2(struct sha256_mb_mgr *state);
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#endif
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