204 lines
5.9 KiB
C
204 lines
5.9 KiB
C
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/*
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* This file is part of the Chelsio T6 Crypto driver for Linux.
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*
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* Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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#ifndef __CHCR_CRYPTO_H__
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#define __CHCR_CRYPTO_H__
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/* Define following if h/w is not dropping the AAD and IV data before
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* giving the processed data
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*/
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#define CHCR_CRA_PRIORITY 300
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#define CHCR_AES_MAX_KEY_LEN (2 * (AES_MAX_KEY_SIZE)) /* consider xts */
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#define CHCR_MAX_CRYPTO_IV_LEN 16 /* AES IV len */
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#define CHCR_MAX_AUTHENC_AES_KEY_LEN 32 /* max aes key length*/
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#define CHCR_MAX_AUTHENC_SHA_KEY_LEN 128 /* max sha key length*/
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#define CHCR_GIVENCRYPT_OP 2
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/* CPL/SCMD parameters */
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#define CHCR_ENCRYPT_OP 0
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#define CHCR_DECRYPT_OP 1
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#define CHCR_SCMD_SEQ_NO_CTRL_32BIT 1
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#define CHCR_SCMD_SEQ_NO_CTRL_48BIT 2
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#define CHCR_SCMD_SEQ_NO_CTRL_64BIT 3
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#define CHCR_SCMD_PROTO_VERSION_GENERIC 4
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#define CHCR_SCMD_AUTH_CTRL_AUTH_CIPHER 0
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#define CHCR_SCMD_AUTH_CTRL_CIPHER_AUTH 1
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#define CHCR_SCMD_CIPHER_MODE_NOP 0
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#define CHCR_SCMD_CIPHER_MODE_AES_CBC 1
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#define CHCR_SCMD_CIPHER_MODE_GENERIC_AES 4
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#define CHCR_SCMD_CIPHER_MODE_AES_XTS 6
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#define CHCR_SCMD_AUTH_MODE_NOP 0
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#define CHCR_SCMD_AUTH_MODE_SHA1 1
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#define CHCR_SCMD_AUTH_MODE_SHA224 2
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#define CHCR_SCMD_AUTH_MODE_SHA256 3
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#define CHCR_SCMD_AUTH_MODE_SHA512_224 5
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#define CHCR_SCMD_AUTH_MODE_SHA512_256 6
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#define CHCR_SCMD_AUTH_MODE_SHA512_384 7
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#define CHCR_SCMD_AUTH_MODE_SHA512_512 8
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#define CHCR_SCMD_HMAC_CTRL_NOP 0
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#define CHCR_SCMD_HMAC_CTRL_NO_TRUNC 1
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#define CHCR_SCMD_IVGEN_CTRL_HW 0
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#define CHCR_SCMD_IVGEN_CTRL_SW 1
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/* This are not really mac key size. They are intermediate values
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* of sha engine and its size
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*/
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#define CHCR_KEYCTX_MAC_KEY_SIZE_128 0
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#define CHCR_KEYCTX_MAC_KEY_SIZE_160 1
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#define CHCR_KEYCTX_MAC_KEY_SIZE_192 2
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#define CHCR_KEYCTX_MAC_KEY_SIZE_256 3
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#define CHCR_KEYCTX_MAC_KEY_SIZE_512 4
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#define CHCR_KEYCTX_CIPHER_KEY_SIZE_128 0
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#define CHCR_KEYCTX_CIPHER_KEY_SIZE_192 1
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#define CHCR_KEYCTX_CIPHER_KEY_SIZE_256 2
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#define CHCR_KEYCTX_NO_KEY 15
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#define CHCR_CPL_FW4_PLD_IV_OFFSET (5 * 64) /* bytes. flt #5 and #6 */
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#define CHCR_CPL_FW4_PLD_HASH_RESULT_OFFSET (7 * 64) /* bytes. flt #7 */
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#define CHCR_CPL_FW4_PLD_DATA_SIZE (4 * 64) /* bytes. flt #4 to #7 */
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#define KEY_CONTEXT_HDR_SALT_AND_PAD 16
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#define flits_to_bytes(x) (x * 8)
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#define IV_NOP 0
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#define IV_IMMEDIATE 1
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#define IV_DSGL 2
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#define CRYPTO_ALG_SUB_TYPE_MASK 0x0f000000
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#define CRYPTO_ALG_SUB_TYPE_HASH_HMAC 0x01000000
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#define CRYPTO_ALG_TYPE_HMAC (CRYPTO_ALG_TYPE_AHASH |\
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CRYPTO_ALG_SUB_TYPE_HASH_HMAC)
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#define MAX_SALT 4
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#define MAX_SCRATCH_PAD_SIZE 32
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#define CHCR_HASH_MAX_BLOCK_SIZE_64 64
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#define CHCR_HASH_MAX_BLOCK_SIZE_128 128
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/* Aligned to 128 bit boundary */
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struct _key_ctx {
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__be32 ctx_hdr;
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u8 salt[MAX_SALT];
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__be64 reserverd;
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unsigned char key[0];
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};
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struct ablk_ctx {
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u8 enc;
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unsigned int processed_len;
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__be32 key_ctx_hdr;
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unsigned int enckey_len;
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unsigned int dst_nents;
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struct scatterlist iv_sg;
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u8 key[CHCR_AES_MAX_KEY_LEN];
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u8 iv[CHCR_MAX_CRYPTO_IV_LEN];
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unsigned char ciph_mode;
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};
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struct hmac_ctx {
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struct shash_desc *desc;
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u8 ipad[CHCR_HASH_MAX_BLOCK_SIZE_128];
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u8 opad[CHCR_HASH_MAX_BLOCK_SIZE_128];
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};
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struct __crypto_ctx {
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struct hmac_ctx hmacctx[0];
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struct ablk_ctx ablkctx[0];
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};
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struct chcr_context {
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struct chcr_dev *dev;
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unsigned char tx_channel_id;
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struct __crypto_ctx crypto_ctx[0];
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};
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struct chcr_ahash_req_ctx {
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u32 result;
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char bfr[CHCR_HASH_MAX_BLOCK_SIZE_128];
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u8 bfr_len;
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/* DMA the partial hash in it */
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u8 partial_hash[CHCR_HASH_MAX_DIGEST_SIZE];
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u64 data_len; /* Data len till time */
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void *dummy_payload_ptr;
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/* SKB which is being sent to the hardware for processing */
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struct sk_buff *skb;
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};
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struct chcr_blkcipher_req_ctx {
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struct sk_buff *skb;
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};
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struct chcr_alg_template {
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u32 type;
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u32 is_registered;
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union {
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struct crypto_alg crypto;
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struct ahash_alg hash;
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} alg;
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};
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struct chcr_req_ctx {
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union {
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struct ahash_request *ahash_req;
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struct ablkcipher_request *ablk_req;
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} req;
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union {
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struct chcr_ahash_req_ctx *ahash_ctx;
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struct chcr_blkcipher_req_ctx *ablk_ctx;
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} ctx;
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};
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struct sge_opaque_hdr {
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void *dev;
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dma_addr_t addr[MAX_SKB_FRAGS + 1];
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};
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typedef struct sk_buff *(*create_wr_t)(struct crypto_async_request *req,
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struct chcr_context *ctx,
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unsigned short qid,
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unsigned short op_type);
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#endif /* __CHCR_CRYPTO_H__ */
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