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Date: Thu, 23 Jun 2016 18:40:45 -0700
From: Megha Dey <megha.dey@...el.com>
To: herbert@...dor.apana.org.au
Cc: tim.c.chen@...ux.intel.com, davem@...emloft.net,
linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
megha.dey@...el.com, fenghua.yu@...el.com,
Megha Dey <megha.dey@...ux.intel.com>
Subject: [PATCH 4/7] 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: Megha Dey <megha.dey@...ux.intel.com>
Reviewed-by: Fenghua Yu <fenghua.yu@...el.com>
Reviewed-by: Tim Chen <tim.c.chen@...ux.intel.com>
---
arch/x86/crypto/sha256-mb/sha256_mb_ctx.h | 136 +++++++++
arch/x86/crypto/sha256-mb/sha256_mb_mgr.h | 108 ++++++++
.../crypto/sha256-mb/sha256_mb_mgr_datastruct.S | 304 +++++++++++++++++++++
3 files changed, 548 insertions(+)
create mode 100644 arch/x86/crypto/sha256-mb/sha256_mb_ctx.h
create mode 100644 arch/x86/crypto/sha256-mb/sha256_mb_mgr.h
create mode 100644 arch/x86/crypto/sha256-mb/sha256_mb_mgr_datastruct.S
diff --git a/arch/x86/crypto/sha256-mb/sha256_mb_ctx.h b/arch/x86/crypto/sha256-mb/sha256_mb_ctx.h
new file mode 100644
index 0000000..edd252b
--- /dev/null
+++ b/arch/x86/crypto/sha256-mb/sha256_mb_ctx.h
@@ -0,0 +1,136 @@
+/*
+ * 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@...ux.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
diff --git a/arch/x86/crypto/sha256-mb/sha256_mb_mgr.h b/arch/x86/crypto/sha256-mb/sha256_mb_mgr.h
new file mode 100644
index 0000000..b01ae40
--- /dev/null
+++ b/arch/x86/crypto/sha256-mb/sha256_mb_mgr.h
@@ -0,0 +1,108 @@
+/*
+ * 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@...ux.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
diff --git a/arch/x86/crypto/sha256-mb/sha256_mb_mgr_datastruct.S b/arch/x86/crypto/sha256-mb/sha256_mb_mgr_datastruct.S
new file mode 100644
index 0000000..5c377ba
--- /dev/null
+++ b/arch/x86/crypto/sha256-mb/sha256_mb_mgr_datastruct.S
@@ -0,0 +1,304 @@
+/*
+ * 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@...ux.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
--
1.9.1
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