Commit 98cf1038 authored by Megha Dey's avatar Megha Dey Committed by Herbert Xu

crypto: sha256-mb - Algorithm data structures

This patch introduces the data structures and prototypes of
functions needed for computing SHA256 hash using multi-buffer.
Included are the structures of the multi-buffer SHA256 job,
job scheduler in C and x86 assembly.
Signed-off-by: default avatarMegha Dey <megha.dey@linux.intel.com>
Reviewed-by: default avatarFenghua Yu <fenghua.yu@intel.com>
Reviewed-by: default avatarTim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent a377c6b1
/*
* Header file for multi buffer SHA256 context
*
* 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_CTX_INTERNAL_H
#define _SHA_MB_CTX_INTERNAL_H
#include "sha256_mb_mgr.h"
#define HASH_UPDATE 0x00
#define HASH_FIRST 0x01
#define HASH_LAST 0x02
#define HASH_ENTIRE 0x03
#define HASH_DONE 0x04
#define HASH_FINAL 0x08
#define HASH_CTX_STS_IDLE 0x00
#define HASH_CTX_STS_PROCESSING 0x01
#define HASH_CTX_STS_LAST 0x02
#define HASH_CTX_STS_COMPLETE 0x04
enum hash_ctx_error {
HASH_CTX_ERROR_NONE = 0,
HASH_CTX_ERROR_INVALID_FLAGS = -1,
HASH_CTX_ERROR_ALREADY_PROCESSING = -2,
HASH_CTX_ERROR_ALREADY_COMPLETED = -3,
#ifdef HASH_CTX_DEBUG
HASH_CTX_ERROR_DEBUG_DIGEST_MISMATCH = -4,
#endif
};
#define hash_ctx_user_data(ctx) ((ctx)->user_data)
#define hash_ctx_digest(ctx) ((ctx)->job.result_digest)
#define hash_ctx_processing(ctx) ((ctx)->status & HASH_CTX_STS_PROCESSING)
#define hash_ctx_complete(ctx) ((ctx)->status == HASH_CTX_STS_COMPLETE)
#define hash_ctx_status(ctx) ((ctx)->status)
#define hash_ctx_error(ctx) ((ctx)->error)
#define hash_ctx_init(ctx) \
do { \
(ctx)->error = HASH_CTX_ERROR_NONE; \
(ctx)->status = HASH_CTX_STS_COMPLETE; \
} while (0)
/* Hash Constants and Typedefs */
#define SHA256_DIGEST_LENGTH 8
#define SHA256_LOG2_BLOCK_SIZE 6
#define SHA256_PADLENGTHFIELD_SIZE 8
#ifdef SHA_MB_DEBUG
#define assert(expr) \
do { \
if (unlikely(!(expr))) { \
printk(KERN_ERR "Assertion failed! %s,%s,%s,line=%d\n", \
#expr, __FILE__, __func__, __LINE__); \
} \
} while (0)
#else
#define assert(expr) do {} while (0)
#endif
struct sha256_ctx_mgr {
struct sha256_mb_mgr mgr;
};
/* typedef struct sha256_ctx_mgr sha256_ctx_mgr; */
struct sha256_hash_ctx {
/* Must be at struct offset 0 */
struct job_sha256 job;
/* status flag */
int status;
/* error flag */
int error;
uint32_t total_length;
const void *incoming_buffer;
uint32_t incoming_buffer_length;
uint8_t partial_block_buffer[SHA256_BLOCK_SIZE * 2];
uint32_t partial_block_buffer_length;
void *user_data;
};
#endif
/*
* 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
/*
* Header file for multi buffer SHA256 algorithm data structure
*
* 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.
*/
# Macros for defining data structures
# Usage example
#START_FIELDS # JOB_AES
### name size align
#FIELD _plaintext, 8, 8 # pointer to plaintext
#FIELD _ciphertext, 8, 8 # pointer to ciphertext
#FIELD _IV, 16, 8 # IV
#FIELD _keys, 8, 8 # pointer to keys
#FIELD _len, 4, 4 # length in bytes
#FIELD _status, 4, 4 # status enumeration
#FIELD _user_data, 8, 8 # pointer to user data
#UNION _union, size1, align1, \
# size2, align2, \
# size3, align3, \
# ...
#END_FIELDS
#%assign _JOB_AES_size _FIELD_OFFSET
#%assign _JOB_AES_align _STRUCT_ALIGN
#########################################################################
# Alternate "struc-like" syntax:
# STRUCT job_aes2
# RES_Q .plaintext, 1
# RES_Q .ciphertext, 1
# RES_DQ .IV, 1
# RES_B .nested, _JOB_AES_SIZE, _JOB_AES_ALIGN
# RES_U .union, size1, align1, \
# size2, align2, \
# ...
# ENDSTRUCT
# # Following only needed if nesting
# %assign job_aes2_size _FIELD_OFFSET
# %assign job_aes2_align _STRUCT_ALIGN
#
# RES_* macros take a name, a count and an optional alignment.
# The count in in terms of the base size of the macro, and the
# default alignment is the base size.
# The macros are:
# Macro Base size
# RES_B 1
# RES_W 2
# RES_D 4
# RES_Q 8
# RES_DQ 16
# RES_Y 32
# RES_Z 64
#
# RES_U defines a union. It's arguments are a name and two or more
# pairs of "size, alignment"
#
# The two assigns are only needed if this structure is being nested
# within another. Even if the assigns are not done, one can still use
# STRUCT_NAME_size as the size of the structure.
#
# Note that for nesting, you still need to assign to STRUCT_NAME_size.
#
# The differences between this and using "struc" directly are that each
# type is implicitly aligned to its natural length (although this can be
# over-ridden with an explicit third parameter), and that the structure
# is padded at the end to its overall alignment.
#
#########################################################################
#ifndef _DATASTRUCT_ASM_
#define _DATASTRUCT_ASM_
#define SZ8 8*SHA256_DIGEST_WORD_SIZE
#define ROUNDS 64*SZ8
#define PTR_SZ 8
#define SHA256_DIGEST_WORD_SIZE 4
#define MAX_SHA256_LANES 8
#define SHA256_DIGEST_WORDS 8
#define SHA256_DIGEST_ROW_SIZE (MAX_SHA256_LANES * SHA256_DIGEST_WORD_SIZE)
#define SHA256_DIGEST_SIZE (SHA256_DIGEST_ROW_SIZE * SHA256_DIGEST_WORDS)
#define SHA256_BLK_SZ 64
# START_FIELDS
.macro START_FIELDS
_FIELD_OFFSET = 0
_STRUCT_ALIGN = 0
.endm
# FIELD name size align
.macro FIELD name size align
_FIELD_OFFSET = (_FIELD_OFFSET + (\align) - 1) & (~ ((\align)-1))
\name = _FIELD_OFFSET
_FIELD_OFFSET = _FIELD_OFFSET + (\size)
.if (\align > _STRUCT_ALIGN)
_STRUCT_ALIGN = \align
.endif
.endm
# END_FIELDS
.macro END_FIELDS
_FIELD_OFFSET = (_FIELD_OFFSET + _STRUCT_ALIGN-1) & (~ (_STRUCT_ALIGN-1))
.endm
########################################################################
.macro STRUCT p1
START_FIELDS
.struc \p1
.endm
.macro ENDSTRUCT
tmp = _FIELD_OFFSET
END_FIELDS
tmp = (_FIELD_OFFSET - %%tmp)
.if (tmp > 0)
.lcomm tmp
.endif
.endstruc
.endm
## RES_int name size align
.macro RES_int p1 p2 p3
name = \p1
size = \p2
align = .\p3
_FIELD_OFFSET = (_FIELD_OFFSET + (align) - 1) & (~ ((align)-1))
.align align
.lcomm name size
_FIELD_OFFSET = _FIELD_OFFSET + (size)
.if (align > _STRUCT_ALIGN)
_STRUCT_ALIGN = align
.endif
.endm
# macro RES_B name, size [, align]
.macro RES_B _name, _size, _align=1
RES_int _name _size _align
.endm
# macro RES_W name, size [, align]
.macro RES_W _name, _size, _align=2
RES_int _name 2*(_size) _align
.endm
# macro RES_D name, size [, align]
.macro RES_D _name, _size, _align=4
RES_int _name 4*(_size) _align
.endm
# macro RES_Q name, size [, align]
.macro RES_Q _name, _size, _align=8
RES_int _name 8*(_size) _align
.endm
# macro RES_DQ name, size [, align]
.macro RES_DQ _name, _size, _align=16
RES_int _name 16*(_size) _align
.endm
# macro RES_Y name, size [, align]
.macro RES_Y _name, _size, _align=32
RES_int _name 32*(_size) _align
.endm
# macro RES_Z name, size [, align]
.macro RES_Z _name, _size, _align=64
RES_int _name 64*(_size) _align
.endm
#endif
########################################################################
#### Define SHA256 Out Of Order Data Structures
########################################################################
START_FIELDS # LANE_DATA
### name size align
FIELD _job_in_lane, 8, 8 # pointer to job object
END_FIELDS
_LANE_DATA_size = _FIELD_OFFSET
_LANE_DATA_align = _STRUCT_ALIGN
########################################################################
START_FIELDS # SHA256_ARGS_X4
### name size align
FIELD _digest, 4*8*8, 4 # transposed digest
FIELD _data_ptr, 8*8, 8 # array of pointers to data
END_FIELDS
_SHA256_ARGS_X4_size = _FIELD_OFFSET
_SHA256_ARGS_X4_align = _STRUCT_ALIGN
_SHA256_ARGS_X8_size = _FIELD_OFFSET
_SHA256_ARGS_X8_align = _STRUCT_ALIGN
#######################################################################
START_FIELDS # MB_MGR
### name size align
FIELD _args, _SHA256_ARGS_X4_size, _SHA256_ARGS_X4_align
FIELD _lens, 4*8, 8
FIELD _unused_lanes, 8, 8
FIELD _ldata, _LANE_DATA_size*8, _LANE_DATA_align
END_FIELDS
_MB_MGR_size = _FIELD_OFFSET
_MB_MGR_align = _STRUCT_ALIGN
_args_digest = _args + _digest
_args_data_ptr = _args + _data_ptr
#######################################################################
START_FIELDS #STACK_FRAME
### name size align
FIELD _data, 16*SZ8, 1 # transposed digest
FIELD _digest, 8*SZ8, 1 # array of pointers to data
FIELD _ytmp, 4*SZ8, 1
FIELD _rsp, 8, 1
END_FIELDS
_STACK_FRAME_size = _FIELD_OFFSET
_STACK_FRAME_align = _STRUCT_ALIGN
#######################################################################
########################################################################
#### Define constants
########################################################################
#define STS_UNKNOWN 0
#define STS_BEING_PROCESSED 1
#define STS_COMPLETED 2
########################################################################
#### Define JOB_SHA256 structure
########################################################################
START_FIELDS # JOB_SHA256
### name size align
FIELD _buffer, 8, 8 # pointer to buffer
FIELD _len, 8, 8 # length in bytes
FIELD _result_digest, 8*4, 32 # Digest (output)
FIELD _status, 4, 4
FIELD _user_data, 8, 8
END_FIELDS
_JOB_SHA256_size = _FIELD_OFFSET
_JOB_SHA256_align = _STRUCT_ALIGN
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