arch/x86/crypto/sha-mb/sha_mb_mgr.h

   1 /*
   2  * Header file for multi buffer SHA1 algorithm manager
   3  *
   4  * This file is provided under a dual BSD/GPLv2 license.  When using or
   5  * redistributing this file, you may do so under either license.
   6  *
   7  * GPL LICENSE SUMMARY
   8  *
   9  *  Copyright(c) 2014 Intel Corporation.
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of version 2 of the GNU General Public License as
  13  *  published by the Free Software Foundation.
  14  *
  15  *  This program is distributed in the hope that it will be useful, but
  16  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  *  General Public License for more details.
  19  *
  20  *  Contact Information:
  21  *      James Guilford <james.guilford@intel.com>
  22  *      Tim Chen <tim.c.chen@linux.intel.com>
  23  *
  24  *  BSD LICENSE
  25  *
  26  *  Copyright(c) 2014 Intel Corporation.
  27  *
  28  *  Redistribution and use in source and binary forms, with or without
  29  *  modification, are permitted provided that the following conditions
  30  *  are met:
  31  *
  32  *    * Redistributions of source code must retain the above copyright
  33  *      notice, this list of conditions and the following disclaimer.
  34  *    * Redistributions in binary form must reproduce the above copyright
  35  *      notice, this list of conditions and the following disclaimer in
  36  *      the documentation and/or other materials provided with the
  37  *      distribution.
  38  *    * Neither the name of Intel Corporation nor the names of its
  39  *      contributors may be used to endorse or promote products derived
  40  *      from this software without specific prior written permission.
  41  *
  42  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  43  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  44  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  45  *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  46  *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  47  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  48  *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  49  *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  50  *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  51  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  52  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  53  */
  54 #ifndef __SHA_MB_MGR_H
  55 #define __SHA_MB_MGR_H
  56
  57
  58 #include <linux/types.h>
  59
  60 #define NUM_SHA1_DIGEST_WORDS 5
  61
  62 enum job_sts {  STS_UNKNOWN = 0,
  63                 STS_BEING_PROCESSED = 1,
  64                 STS_COMPLETED = 2,
  65                 STS_INTERNAL_ERROR = 3,
  66                 STS_ERROR = 4
  67 };
  68
  69 struct job_sha1 {
  70         u8      *buffer;
  71         u32     len;
  72         u32     result_digest[NUM_SHA1_DIGEST_WORDS] __aligned(32);
  73         enum    job_sts status;
  74         void    *user_data;
  75 };
  76
  77 /* SHA1 out-of-order scheduler */
  78
  79 /* typedef uint32_t sha1_digest_array[5][8]; */
  80
  81 struct sha1_args_x8 {
  82         uint32_t        digest[5][8];
  83         uint8_t         *data_ptr[8];
  84 };
  85
  86 struct sha1_lane_data {
  87         struct job_sha1 *job_in_lane;
  88 };
  89
  90 struct sha1_mb_mgr {
  91         struct sha1_args_x8 args;
  92
  93         uint32_t lens[8];
  94
  95         /* each byte is index (0...7) of unused lanes */
  96         uint64_t unused_lanes;
  97         /* byte 4 is set to FF as a flag */
  98         struct sha1_lane_data ldata[8];
  99 };
 100
 101
 102 #define SHA1_MB_MGR_NUM_LANES_AVX2 8
 103
 104 void sha1_mb_mgr_init_avx2(struct sha1_mb_mgr *state);
 105 struct job_sha1 *sha1_mb_mgr_submit_avx2(struct sha1_mb_mgr *state,
 106                                          struct job_sha1 *job);
 107 struct job_sha1 *sha1_mb_mgr_flush_avx2(struct sha1_mb_mgr *state);
 108 struct job_sha1 *sha1_mb_mgr_get_comp_job_avx2(struct sha1_mb_mgr *state);
 109
 110 #endif