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Diffstat (limited to 'drivers/crypto/chelsio/chcr_crypto.h')
| -rw-r--r-- | drivers/crypto/chelsio/chcr_crypto.h | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/drivers/crypto/chelsio/chcr_crypto.h b/drivers/crypto/chelsio/chcr_crypto.h new file mode 100644 index 000000000000..d7d75605da8b --- /dev/null +++ b/drivers/crypto/chelsio/chcr_crypto.h @@ -0,0 +1,203 @@ +/* + * This file is part of the Chelsio T6 Crypto driver for Linux. + * + * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * 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. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#ifndef __CHCR_CRYPTO_H__ +#define __CHCR_CRYPTO_H__ + +/* Define following if h/w is not dropping the AAD and IV data before + * giving the processed data + */ + +#define CHCR_CRA_PRIORITY 300 + +#define CHCR_AES_MAX_KEY_LEN (2 * (AES_MAX_KEY_SIZE)) /* consider xts */ +#define CHCR_MAX_CRYPTO_IV_LEN 16 /* AES IV len */ + +#define CHCR_MAX_AUTHENC_AES_KEY_LEN 32 /* max aes key length*/ +#define CHCR_MAX_AUTHENC_SHA_KEY_LEN 128 /* max sha key length*/ + +#define CHCR_GIVENCRYPT_OP 2 +/* CPL/SCMD parameters */ + +#define CHCR_ENCRYPT_OP 0 +#define CHCR_DECRYPT_OP 1 + +#define CHCR_SCMD_SEQ_NO_CTRL_32BIT 1 +#define CHCR_SCMD_SEQ_NO_CTRL_48BIT 2 +#define CHCR_SCMD_SEQ_NO_CTRL_64BIT 3 + +#define CHCR_SCMD_PROTO_VERSION_GENERIC 4 + +#define CHCR_SCMD_AUTH_CTRL_AUTH_CIPHER 0 +#define CHCR_SCMD_AUTH_CTRL_CIPHER_AUTH 1 + +#define CHCR_SCMD_CIPHER_MODE_NOP 0 +#define CHCR_SCMD_CIPHER_MODE_AES_CBC 1 +#define CHCR_SCMD_CIPHER_MODE_GENERIC_AES 4 +#define CHCR_SCMD_CIPHER_MODE_AES_XTS 6 + +#define CHCR_SCMD_AUTH_MODE_NOP 0 +#define CHCR_SCMD_AUTH_MODE_SHA1 1 +#define CHCR_SCMD_AUTH_MODE_SHA224 2 +#define CHCR_SCMD_AUTH_MODE_SHA256 3 +#define CHCR_SCMD_AUTH_MODE_SHA512_224 5 +#define CHCR_SCMD_AUTH_MODE_SHA512_256 6 +#define CHCR_SCMD_AUTH_MODE_SHA512_384 7 +#define CHCR_SCMD_AUTH_MODE_SHA512_512 8 + +#define CHCR_SCMD_HMAC_CTRL_NOP 0 +#define CHCR_SCMD_HMAC_CTRL_NO_TRUNC 1 + +#define CHCR_SCMD_IVGEN_CTRL_HW 0 +#define CHCR_SCMD_IVGEN_CTRL_SW 1 +/* This are not really mac key size. They are intermediate values + * of sha engine and its size + */ +#define CHCR_KEYCTX_MAC_KEY_SIZE_128 0 +#define CHCR_KEYCTX_MAC_KEY_SIZE_160 1 +#define CHCR_KEYCTX_MAC_KEY_SIZE_192 2 +#define CHCR_KEYCTX_MAC_KEY_SIZE_256 3 +#define CHCR_KEYCTX_MAC_KEY_SIZE_512 4 +#define CHCR_KEYCTX_CIPHER_KEY_SIZE_128 0 +#define CHCR_KEYCTX_CIPHER_KEY_SIZE_192 1 +#define CHCR_KEYCTX_CIPHER_KEY_SIZE_256 2 +#define CHCR_KEYCTX_NO_KEY 15 + +#define CHCR_CPL_FW4_PLD_IV_OFFSET (5 * 64) /* bytes. flt #5 and #6 */ +#define CHCR_CPL_FW4_PLD_HASH_RESULT_OFFSET (7 * 64) /* bytes. flt #7 */ +#define CHCR_CPL_FW4_PLD_DATA_SIZE (4 * 64) /* bytes. flt #4 to #7 */ + +#define KEY_CONTEXT_HDR_SALT_AND_PAD 16 +#define flits_to_bytes(x) (x * 8) + +#define IV_NOP 0 +#define IV_IMMEDIATE 1 +#define IV_DSGL 2 + +#define CRYPTO_ALG_SUB_TYPE_MASK 0x0f000000 +#define CRYPTO_ALG_SUB_TYPE_HASH_HMAC 0x01000000 +#define CRYPTO_ALG_TYPE_HMAC (CRYPTO_ALG_TYPE_AHASH |\ + CRYPTO_ALG_SUB_TYPE_HASH_HMAC) + +#define MAX_SALT 4 +#define MAX_SCRATCH_PAD_SIZE 32 + +#define CHCR_HASH_MAX_BLOCK_SIZE_64 64 +#define CHCR_HASH_MAX_BLOCK_SIZE_128 128 + +/* Aligned to 128 bit boundary */ +struct _key_ctx { + __be32 ctx_hdr; + u8 salt[MAX_SALT]; + __be64 reserverd; + unsigned char key[0]; +}; + +struct ablk_ctx { + u8 enc; + unsigned int processed_len; + __be32 key_ctx_hdr; + unsigned int enckey_len; + unsigned int dst_nents; + struct scatterlist iv_sg; + u8 key[CHCR_AES_MAX_KEY_LEN]; + u8 iv[CHCR_MAX_CRYPTO_IV_LEN]; + unsigned char ciph_mode; +}; + +struct hmac_ctx { + struct shash_desc *desc; + u8 ipad[CHCR_HASH_MAX_BLOCK_SIZE_128]; + u8 opad[CHCR_HASH_MAX_BLOCK_SIZE_128]; +}; + +struct __crypto_ctx { + struct hmac_ctx hmacctx[0]; + struct ablk_ctx ablkctx[0]; +}; + +struct chcr_context { + struct chcr_dev *dev; + unsigned char tx_channel_id; + struct __crypto_ctx crypto_ctx[0]; +}; + +struct chcr_ahash_req_ctx { + u32 result; + char bfr[CHCR_HASH_MAX_BLOCK_SIZE_128]; + u8 bfr_len; + /* DMA the partial hash in it */ + u8 partial_hash[CHCR_HASH_MAX_DIGEST_SIZE]; + u64 data_len; /* Data len till time */ + void *dummy_payload_ptr; + /* SKB which is being sent to the hardware for processing */ + struct sk_buff *skb; +}; + +struct chcr_blkcipher_req_ctx { + struct sk_buff *skb; +}; + +struct chcr_alg_template { + u32 type; + u32 is_registered; + union { + struct crypto_alg crypto; + struct ahash_alg hash; + } alg; +}; + +struct chcr_req_ctx { + union { + struct ahash_request *ahash_req; + struct ablkcipher_request *ablk_req; + } req; + union { + struct chcr_ahash_req_ctx *ahash_ctx; + struct chcr_blkcipher_req_ctx *ablk_ctx; + } ctx; +}; + +struct sge_opaque_hdr { + void *dev; + dma_addr_t addr[MAX_SKB_FRAGS + 1]; +}; + +typedef struct sk_buff *(*create_wr_t)(struct crypto_async_request *req, + struct chcr_context *ctx, + unsigned short qid, + unsigned short op_type); + +#endif /* __CHCR_CRYPTO_H__ */ |