| /* |
| * 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 GHASH_BLOCK_SIZE 16 |
| #define GHASH_DIGEST_SIZE 16 |
| |
| #define CCM_B0_SIZE 16 |
| #define CCM_AAD_FIELD_SIZE 2 |
| // 511 - 16(For IV) |
| #define T6_MAX_AAD_SIZE 495 |
| |
| |
| /* Define following if h/w is not dropping the AAD and IV data before |
| * giving the processed data |
| */ |
| |
| #define CHCR_CRA_PRIORITY 500 |
| #define CHCR_AEAD_PRIORITY 6000 |
| #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_AES_GCM 2 |
| #define CHCR_SCMD_CIPHER_MODE_AES_CTR 3 |
| #define CHCR_SCMD_CIPHER_MODE_GENERIC_AES 4 |
| #define CHCR_SCMD_CIPHER_MODE_AES_XTS 6 |
| #define CHCR_SCMD_CIPHER_MODE_AES_CCM 7 |
| |
| #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_GHASH 4 |
| #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_AUTH_MODE_CBCMAC 9 |
| #define CHCR_SCMD_AUTH_MODE_CMAC 10 |
| |
| #define CHCR_SCMD_HMAC_CTRL_NOP 0 |
| #define CHCR_SCMD_HMAC_CTRL_NO_TRUNC 1 |
| #define CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366 2 |
| #define CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT 3 |
| #define CHCR_SCMD_HMAC_CTRL_PL1 4 |
| #define CHCR_SCMD_HMAC_CTRL_PL2 5 |
| #define CHCR_SCMD_HMAC_CTRL_PL3 6 |
| #define CHCR_SCMD_HMAC_CTRL_DIV2 7 |
| #define VERIFY_HW 0 |
| #define VERIFY_SW 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 AEAD_H_SIZE 16 |
| |
| #define CRYPTO_ALG_SUB_TYPE_MASK 0x0f000000 |
| #define CRYPTO_ALG_SUB_TYPE_HASH_HMAC 0x01000000 |
| #define CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 0x02000000 |
| #define CRYPTO_ALG_SUB_TYPE_AEAD_GCM 0x03000000 |
| #define CRYPTO_ALG_SUB_TYPE_CBC_SHA 0x04000000 |
| #define CRYPTO_ALG_SUB_TYPE_AEAD_CCM 0x05000000 |
| #define CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309 0x06000000 |
| #define CRYPTO_ALG_SUB_TYPE_CBC_NULL 0x07000000 |
| #define CRYPTO_ALG_SUB_TYPE_CTR 0x08000000 |
| #define CRYPTO_ALG_SUB_TYPE_CTR_RFC3686 0x09000000 |
| #define CRYPTO_ALG_SUB_TYPE_XTS 0x0a000000 |
| #define CRYPTO_ALG_SUB_TYPE_CBC 0x0b000000 |
| #define CRYPTO_ALG_SUB_TYPE_CTR_SHA 0x0c000000 |
| #define CRYPTO_ALG_SUB_TYPE_CTR_NULL 0x0d000000 |
| #define CRYPTO_ALG_TYPE_HMAC (CRYPTO_ALG_TYPE_AHASH |\ |
| CRYPTO_ALG_SUB_TYPE_HASH_HMAC) |
| |
| #define MAX_SCRATCH_PAD_SIZE 32 |
| |
| #define CHCR_HASH_MAX_BLOCK_SIZE_64 64 |
| #define CHCR_HASH_MAX_BLOCK_SIZE_128 128 |
| #define CHCR_SRC_SG_SIZE (0x10000 - sizeof(int)) |
| #define CHCR_DST_SG_SIZE 2048 |
| |
| static inline struct chcr_context *a_ctx(struct crypto_aead *tfm) |
| { |
| return crypto_aead_ctx(tfm); |
| } |
| |
| static inline struct chcr_context *c_ctx(struct crypto_skcipher *tfm) |
| { |
| return crypto_skcipher_ctx(tfm); |
| } |
| |
| static inline struct chcr_context *h_ctx(struct crypto_ahash *tfm) |
| { |
| return crypto_tfm_ctx(crypto_ahash_tfm(tfm)); |
| } |
| |
| struct ablk_ctx { |
| struct crypto_skcipher *sw_cipher; |
| __be32 key_ctx_hdr; |
| unsigned int enckey_len; |
| unsigned char ciph_mode; |
| u8 key[CHCR_AES_MAX_KEY_LEN]; |
| u8 nonce[4]; |
| u8 rrkey[AES_MAX_KEY_SIZE]; |
| }; |
| struct chcr_aead_reqctx { |
| struct sk_buff *skb; |
| dma_addr_t iv_dma; |
| dma_addr_t b0_dma; |
| unsigned int b0_len; |
| unsigned int op; |
| u16 imm; |
| u16 verify; |
| u16 txqidx; |
| u16 rxqidx; |
| u8 iv[CHCR_MAX_CRYPTO_IV_LEN + MAX_SCRATCH_PAD_SIZE]; |
| u8 *scratch_pad; |
| }; |
| |
| struct ulptx_walk { |
| struct ulptx_sgl *sgl; |
| unsigned int nents; |
| unsigned int pair_idx; |
| unsigned int last_sg_len; |
| struct scatterlist *last_sg; |
| struct ulptx_sge_pair *pair; |
| |
| }; |
| |
| struct dsgl_walk { |
| unsigned int nents; |
| unsigned int last_sg_len; |
| struct scatterlist *last_sg; |
| struct cpl_rx_phys_dsgl *dsgl; |
| struct phys_sge_pairs *to; |
| }; |
| |
| struct chcr_gcm_ctx { |
| u8 ghash_h[AEAD_H_SIZE]; |
| }; |
| |
| struct chcr_authenc_ctx { |
| u8 dec_rrkey[AES_MAX_KEY_SIZE]; |
| u8 h_iopad[2 * CHCR_HASH_MAX_DIGEST_SIZE]; |
| unsigned char auth_mode; |
| }; |
| |
| struct __aead_ctx { |
| union { |
| DECLARE_FLEX_ARRAY(struct chcr_gcm_ctx, gcm); |
| DECLARE_FLEX_ARRAY(struct chcr_authenc_ctx, authenc); |
| }; |
| }; |
| |
| struct chcr_aead_ctx { |
| __be32 key_ctx_hdr; |
| unsigned int enckey_len; |
| struct crypto_aead *sw_cipher; |
| u8 salt[MAX_SALT]; |
| u8 key[CHCR_AES_MAX_KEY_LEN]; |
| u8 nonce[4]; |
| u16 hmac_ctrl; |
| u16 mayverify; |
| struct __aead_ctx ctx[]; |
| }; |
| |
| struct hmac_ctx { |
| struct crypto_shash *base_hash; |
| u8 ipad[CHCR_HASH_MAX_BLOCK_SIZE_128]; |
| u8 opad[CHCR_HASH_MAX_BLOCK_SIZE_128]; |
| }; |
| |
| struct __crypto_ctx { |
| union { |
| struct hmac_ctx hmacctx; |
| struct ablk_ctx ablkctx; |
| struct chcr_aead_ctx aeadctx; |
| }; |
| }; |
| |
| struct chcr_context { |
| struct chcr_dev *dev; |
| unsigned char rxq_perchan; |
| unsigned char txq_perchan; |
| unsigned int ntxq; |
| unsigned int nrxq; |
| struct completion cbc_aes_aio_done; |
| struct __crypto_ctx crypto_ctx[]; |
| }; |
| |
| struct chcr_hctx_per_wr { |
| struct scatterlist *srcsg; |
| struct sk_buff *skb; |
| dma_addr_t dma_addr; |
| u32 dma_len; |
| unsigned int src_ofst; |
| unsigned int processed; |
| u32 result; |
| u8 is_sg_map; |
| u8 imm; |
| /*Final callback called. Driver cannot rely on nbytes to decide |
| * final call |
| */ |
| u8 isfinal; |
| }; |
| |
| struct chcr_ahash_req_ctx { |
| struct chcr_hctx_per_wr hctx_wr; |
| u8 *reqbfr; |
| u8 *skbfr; |
| /* SKB which is being sent to the hardware for processing */ |
| u64 data_len; /* Data len till time */ |
| u16 txqidx; |
| u16 rxqidx; |
| u8 reqlen; |
| u8 partial_hash[CHCR_HASH_MAX_DIGEST_SIZE]; |
| u8 bfr1[CHCR_HASH_MAX_BLOCK_SIZE_128]; |
| u8 bfr2[CHCR_HASH_MAX_BLOCK_SIZE_128]; |
| }; |
| |
| struct chcr_skcipher_req_ctx { |
| struct sk_buff *skb; |
| struct scatterlist *dstsg; |
| unsigned int processed; |
| unsigned int last_req_len; |
| unsigned int partial_req; |
| struct scatterlist *srcsg; |
| unsigned int src_ofst; |
| unsigned int dst_ofst; |
| unsigned int op; |
| u16 imm; |
| u8 iv[CHCR_MAX_CRYPTO_IV_LEN]; |
| u8 init_iv[CHCR_MAX_CRYPTO_IV_LEN]; |
| u16 txqidx; |
| u16 rxqidx; |
| struct skcipher_request fallback_req; // keep at the end |
| }; |
| |
| struct chcr_alg_template { |
| u32 type; |
| u32 is_registered; |
| union { |
| struct skcipher_alg skcipher; |
| struct ahash_alg hash; |
| struct aead_alg aead; |
| } alg; |
| }; |
| |
| typedef struct sk_buff *(*create_wr_t)(struct aead_request *req, |
| unsigned short qid, |
| int size); |
| |
| void chcr_verify_tag(struct aead_request *req, u8 *input, int *err); |
| int chcr_aead_dma_map(struct device *dev, struct aead_request *req, |
| unsigned short op_type); |
| void chcr_aead_dma_unmap(struct device *dev, struct aead_request *req, |
| unsigned short op_type); |
| void chcr_add_aead_dst_ent(struct aead_request *req, |
| struct cpl_rx_phys_dsgl *phys_cpl, |
| unsigned short qid); |
| void chcr_add_aead_src_ent(struct aead_request *req, struct ulptx_sgl *ulptx); |
| void chcr_add_cipher_src_ent(struct skcipher_request *req, |
| void *ulptx, |
| struct cipher_wr_param *wrparam); |
| int chcr_cipher_dma_map(struct device *dev, struct skcipher_request *req); |
| void chcr_cipher_dma_unmap(struct device *dev, struct skcipher_request *req); |
| void chcr_add_cipher_dst_ent(struct skcipher_request *req, |
| struct cpl_rx_phys_dsgl *phys_cpl, |
| struct cipher_wr_param *wrparam, |
| unsigned short qid); |
| int sg_nents_len_skip(struct scatterlist *sg, u64 len, u64 skip); |
| void chcr_add_hash_src_ent(struct ahash_request *req, struct ulptx_sgl *ulptx, |
| struct hash_wr_param *param); |
| int chcr_hash_dma_map(struct device *dev, struct ahash_request *req); |
| void chcr_hash_dma_unmap(struct device *dev, struct ahash_request *req); |
| void chcr_aead_common_exit(struct aead_request *req); |
| #endif /* __CHCR_CRYPTO_H__ */ |