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