diff options
Diffstat (limited to 'drivers/crypto/chelsio/chcr_algo.h')
| -rw-r--r-- | drivers/crypto/chelsio/chcr_algo.h | 471 |
1 files changed, 471 insertions, 0 deletions
diff --git a/drivers/crypto/chelsio/chcr_algo.h b/drivers/crypto/chelsio/chcr_algo.h new file mode 100644 index 000000000000..ec64fbcdeb49 --- /dev/null +++ b/drivers/crypto/chelsio/chcr_algo.h @@ -0,0 +1,471 @@ +/* + * 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_ALGO_H__ +#define __CHCR_ALGO_H__ + +/* Crypto key context */ +#define KEY_CONTEXT_CTX_LEN_S 24 +#define KEY_CONTEXT_CTX_LEN_M 0xff +#define KEY_CONTEXT_CTX_LEN_V(x) ((x) << KEY_CONTEXT_CTX_LEN_S) +#define KEY_CONTEXT_CTX_LEN_G(x) \ + (((x) >> KEY_CONTEXT_CTX_LEN_S) & KEY_CONTEXT_CTX_LEN_M) + +#define KEY_CONTEXT_DUAL_CK_S 12 +#define KEY_CONTEXT_DUAL_CK_M 0x1 +#define KEY_CONTEXT_DUAL_CK_V(x) ((x) << KEY_CONTEXT_DUAL_CK_S) +#define KEY_CONTEXT_DUAL_CK_G(x) \ +(((x) >> KEY_CONTEXT_DUAL_CK_S) & KEY_CONTEXT_DUAL_CK_M) +#define KEY_CONTEXT_DUAL_CK_F KEY_CONTEXT_DUAL_CK_V(1U) + +#define KEY_CONTEXT_SALT_PRESENT_S 10 +#define KEY_CONTEXT_SALT_PRESENT_M 0x1 +#define KEY_CONTEXT_SALT_PRESENT_V(x) ((x) << KEY_CONTEXT_SALT_PRESENT_S) +#define KEY_CONTEXT_SALT_PRESENT_G(x) \ + (((x) >> KEY_CONTEXT_SALT_PRESENT_S) & \ + KEY_CONTEXT_SALT_PRESENT_M) +#define KEY_CONTEXT_SALT_PRESENT_F KEY_CONTEXT_SALT_PRESENT_V(1U) + +#define KEY_CONTEXT_VALID_S 0 +#define KEY_CONTEXT_VALID_M 0x1 +#define KEY_CONTEXT_VALID_V(x) ((x) << KEY_CONTEXT_VALID_S) +#define KEY_CONTEXT_VALID_G(x) \ + (((x) >> KEY_CONTEXT_VALID_S) & \ + KEY_CONTEXT_VALID_M) +#define KEY_CONTEXT_VALID_F KEY_CONTEXT_VALID_V(1U) + +#define KEY_CONTEXT_CK_SIZE_S 6 +#define KEY_CONTEXT_CK_SIZE_M 0xf +#define KEY_CONTEXT_CK_SIZE_V(x) ((x) << KEY_CONTEXT_CK_SIZE_S) +#define KEY_CONTEXT_CK_SIZE_G(x) \ + (((x) >> KEY_CONTEXT_CK_SIZE_S) & KEY_CONTEXT_CK_SIZE_M) + +#define KEY_CONTEXT_MK_SIZE_S 2 +#define KEY_CONTEXT_MK_SIZE_M 0xf +#define KEY_CONTEXT_MK_SIZE_V(x) ((x) << KEY_CONTEXT_MK_SIZE_S) +#define KEY_CONTEXT_MK_SIZE_G(x) \ + (((x) >> KEY_CONTEXT_MK_SIZE_S) & KEY_CONTEXT_MK_SIZE_M) + +#define KEY_CONTEXT_OPAD_PRESENT_S 11 +#define KEY_CONTEXT_OPAD_PRESENT_M 0x1 +#define KEY_CONTEXT_OPAD_PRESENT_V(x) ((x) << KEY_CONTEXT_OPAD_PRESENT_S) +#define KEY_CONTEXT_OPAD_PRESENT_G(x) \ + (((x) >> KEY_CONTEXT_OPAD_PRESENT_S) & \ + KEY_CONTEXT_OPAD_PRESENT_M) +#define KEY_CONTEXT_OPAD_PRESENT_F KEY_CONTEXT_OPAD_PRESENT_V(1U) + +#define CHCR_HASH_MAX_DIGEST_SIZE 64 +#define CHCR_MAX_SHA_DIGEST_SIZE 64 + +#define IPSEC_TRUNCATED_ICV_SIZE 12 +#define TLS_TRUNCATED_HMAC_SIZE 10 +#define CBCMAC_DIGEST_SIZE 16 +#define MAX_HASH_NAME 20 + +#define SHA1_INIT_STATE_5X4B 5 +#define SHA256_INIT_STATE_8X4B 8 +#define SHA512_INIT_STATE_8X8B 8 +#define SHA1_INIT_STATE SHA1_INIT_STATE_5X4B +#define SHA224_INIT_STATE SHA256_INIT_STATE_8X4B +#define SHA256_INIT_STATE SHA256_INIT_STATE_8X4B +#define SHA384_INIT_STATE SHA512_INIT_STATE_8X8B +#define SHA512_INIT_STATE SHA512_INIT_STATE_8X8B + +#define DUMMY_BYTES 16 + +#define IPAD_DATA 0x36363636 +#define OPAD_DATA 0x5c5c5c5c + +#define TRANSHDR_SIZE(alignedkctx_len)\ + (sizeof(struct ulptx_idata) +\ + sizeof(struct ulp_txpkt) +\ + sizeof(struct fw_crypto_lookaside_wr) +\ + sizeof(struct cpl_tx_sec_pdu) +\ + (alignedkctx_len)) +#define CIPHER_TRANSHDR_SIZE(alignedkctx_len, sge_pairs) \ + (TRANSHDR_SIZE(alignedkctx_len) + sge_pairs +\ + sizeof(struct cpl_rx_phys_dsgl)) +#define HASH_TRANSHDR_SIZE(alignedkctx_len)\ + (TRANSHDR_SIZE(alignedkctx_len) + DUMMY_BYTES) + +#define SEC_CPL_OFFSET (sizeof(struct fw_crypto_lookaside_wr) + \ + sizeof(struct ulp_txpkt) + \ + sizeof(struct ulptx_idata)) + +#define FILL_SEC_CPL_OP_IVINSR(id, len, hldr, ofst) \ + htonl( \ + CPL_TX_SEC_PDU_OPCODE_V(CPL_TX_SEC_PDU) | \ + CPL_TX_SEC_PDU_RXCHID_V((id)) | \ + CPL_TX_SEC_PDU_ACKFOLLOWS_V(0) | \ + CPL_TX_SEC_PDU_ULPTXLPBK_V(1) | \ + CPL_TX_SEC_PDU_CPLLEN_V((len)) | \ + CPL_TX_SEC_PDU_PLACEHOLDER_V((hldr)) | \ + CPL_TX_SEC_PDU_IVINSRTOFST_V((ofst))) + +#define FILL_SEC_CPL_CIPHERSTOP_HI(a_start, a_stop, c_start, c_stop_hi) \ + htonl( \ + CPL_TX_SEC_PDU_AADSTART_V((a_start)) | \ + CPL_TX_SEC_PDU_AADSTOP_V((a_stop)) | \ + CPL_TX_SEC_PDU_CIPHERSTART_V((c_start)) | \ + CPL_TX_SEC_PDU_CIPHERSTOP_HI_V((c_stop_hi))) + +#define FILL_SEC_CPL_AUTHINSERT(c_stop_lo, a_start, a_stop, a_inst) \ + htonl( \ + CPL_TX_SEC_PDU_CIPHERSTOP_LO_V((c_stop_lo)) | \ + CPL_TX_SEC_PDU_AUTHSTART_V((a_start)) | \ + CPL_TX_SEC_PDU_AUTHSTOP_V((a_stop)) | \ + CPL_TX_SEC_PDU_AUTHINSERT_V((a_inst))) + +#define FILL_SEC_CPL_SCMD0_SEQNO(ctrl, seq, cmode, amode, opad, size, nivs) \ + htonl( \ + SCMD_SEQ_NO_CTRL_V(0) | \ + SCMD_STATUS_PRESENT_V(0) | \ + SCMD_PROTO_VERSION_V(CHCR_SCMD_PROTO_VERSION_GENERIC) | \ + SCMD_ENC_DEC_CTRL_V((ctrl)) | \ + SCMD_CIPH_AUTH_SEQ_CTRL_V((seq)) | \ + SCMD_CIPH_MODE_V((cmode)) | \ + SCMD_AUTH_MODE_V((amode)) | \ + SCMD_HMAC_CTRL_V((opad)) | \ + SCMD_IV_SIZE_V((size)) | \ + SCMD_NUM_IVS_V((nivs))) + +#define FILL_SEC_CPL_IVGEN_HDRLEN(last, more, ctx_in, mac, ivdrop, len) htonl( \ + SCMD_ENB_DBGID_V(0) | \ + SCMD_IV_GEN_CTRL_V(0) | \ + SCMD_LAST_FRAG_V((last)) | \ + SCMD_MORE_FRAGS_V((more)) | \ + SCMD_TLS_COMPPDU_V(0) | \ + SCMD_KEY_CTX_INLINE_V((ctx_in)) | \ + SCMD_TLS_FRAG_ENABLE_V(0) | \ + SCMD_MAC_ONLY_V((mac)) | \ + SCMD_AADIVDROP_V((ivdrop)) | \ + SCMD_HDR_LEN_V((len))) + +#define FILL_KEY_CTX_HDR(ck_size, mk_size, d_ck, opad, ctx_len) \ + htonl(KEY_CONTEXT_VALID_V(1) | \ + KEY_CONTEXT_CK_SIZE_V((ck_size)) | \ + KEY_CONTEXT_MK_SIZE_V(mk_size) | \ + KEY_CONTEXT_DUAL_CK_V((d_ck)) | \ + KEY_CONTEXT_OPAD_PRESENT_V((opad)) | \ + KEY_CONTEXT_SALT_PRESENT_V(1) | \ + KEY_CONTEXT_CTX_LEN_V((ctx_len))) + +#define FILL_WR_OP_CCTX_SIZE(len, ctx_len) \ + htonl( \ + FW_CRYPTO_LOOKASIDE_WR_OPCODE_V( \ + FW_CRYPTO_LOOKASIDE_WR) | \ + FW_CRYPTO_LOOKASIDE_WR_COMPL_V(0) | \ + FW_CRYPTO_LOOKASIDE_WR_IMM_LEN_V((len)) | \ + FW_CRYPTO_LOOKASIDE_WR_CCTX_LOC_V(1) | \ + FW_CRYPTO_LOOKASIDE_WR_CCTX_SIZE_V((ctx_len))) + +#define FILL_WR_RX_Q_ID(cid, qid, wr_iv) \ + htonl( \ + FW_CRYPTO_LOOKASIDE_WR_RX_CHID_V((cid)) | \ + FW_CRYPTO_LOOKASIDE_WR_RX_Q_ID_V((qid)) | \ + FW_CRYPTO_LOOKASIDE_WR_LCB_V(0) | \ + FW_CRYPTO_LOOKASIDE_WR_IV_V((wr_iv))) + +#define FILL_ULPTX_CMD_DEST(cid) \ + htonl(ULPTX_CMD_V(ULP_TX_PKT) | \ + ULP_TXPKT_DEST_V(0) | \ + ULP_TXPKT_DATAMODIFY_V(0) | \ + ULP_TXPKT_CHANNELID_V((cid)) | \ + ULP_TXPKT_RO_V(1) | \ + ULP_TXPKT_FID_V(0)) + +#define KEYCTX_ALIGN_PAD(bs) ({unsigned int _bs = (bs);\ + _bs == SHA1_DIGEST_SIZE ? 12 : 0; }) + +#define FILL_PLD_SIZE_HASH_SIZE(payload_sgl_len, sgl_lengths, total_frags) \ + htonl(FW_CRYPTO_LOOKASIDE_WR_PLD_SIZE_V(payload_sgl_len ? \ + sgl_lengths[total_frags] : 0) |\ + FW_CRYPTO_LOOKASIDE_WR_HASH_SIZE_V(0)) + +#define FILL_LEN_PKD(calc_tx_flits_ofld, skb) \ + htonl(FW_CRYPTO_LOOKASIDE_WR_LEN16_V(DIV_ROUND_UP((\ + calc_tx_flits_ofld(skb) * 8), 16))) + +#define FILL_CMD_MORE(immdatalen) htonl(ULPTX_CMD_V(ULP_TX_SC_IMM) |\ + ULP_TX_SC_MORE_V((immdatalen) ? 0 : 1)) + +#define MAX_NK 8 +#define CRYPTO_MAX_IMM_TX_PKT_LEN 256 + +struct algo_param { + unsigned int auth_mode; + unsigned int mk_size; + unsigned int result_size; +}; + +struct hash_wr_param { + unsigned int opad_needed; + unsigned int more; + unsigned int last; + struct algo_param alg_prm; + unsigned int sg_len; + unsigned int bfr_len; + u64 scmd1; +}; + +enum { + AES_KEYLENGTH_128BIT = 128, + AES_KEYLENGTH_192BIT = 192, + AES_KEYLENGTH_256BIT = 256 +}; + +enum { + KEYLENGTH_3BYTES = 3, + KEYLENGTH_4BYTES = 4, + KEYLENGTH_6BYTES = 6, + KEYLENGTH_8BYTES = 8 +}; + +enum { + NUMBER_OF_ROUNDS_10 = 10, + NUMBER_OF_ROUNDS_12 = 12, + NUMBER_OF_ROUNDS_14 = 14, +}; + +/* + * CCM defines values of 4, 6, 8, 10, 12, 14, and 16 octets, + * where they indicate the size of the integrity check value (ICV) + */ +enum { + AES_CCM_ICV_4 = 4, + AES_CCM_ICV_6 = 6, + AES_CCM_ICV_8 = 8, + AES_CCM_ICV_10 = 10, + AES_CCM_ICV_12 = 12, + AES_CCM_ICV_14 = 14, + AES_CCM_ICV_16 = 16 +}; + +struct hash_op_params { + unsigned char mk_size; + unsigned char pad_align; + unsigned char auth_mode; + char hash_name[MAX_HASH_NAME]; + unsigned short block_size; + unsigned short word_size; + unsigned short ipad_size; +}; + +struct phys_sge_pairs { + __be16 len[8]; + __be64 addr[8]; +}; + +struct phys_sge_parm { + unsigned int nents; + unsigned int obsize; + unsigned short qid; + unsigned char align; +}; + +struct crypto_result { + struct completion completion; + int err; +}; + +static const u32 sha1_init[SHA1_DIGEST_SIZE / 4] = { + SHA1_H0, SHA1_H1, SHA1_H2, SHA1_H3, SHA1_H4, +}; + +static const u32 sha224_init[SHA256_DIGEST_SIZE / 4] = { + SHA224_H0, SHA224_H1, SHA224_H2, SHA224_H3, + SHA224_H4, SHA224_H5, SHA224_H6, SHA224_H7, +}; + +static const u32 sha256_init[SHA256_DIGEST_SIZE / 4] = { + SHA256_H0, SHA256_H1, SHA256_H2, SHA256_H3, + SHA256_H4, SHA256_H5, SHA256_H6, SHA256_H7, +}; + +static const u64 sha384_init[SHA512_DIGEST_SIZE / 8] = { + SHA384_H0, SHA384_H1, SHA384_H2, SHA384_H3, + SHA384_H4, SHA384_H5, SHA384_H6, SHA384_H7, +}; + +static const u64 sha512_init[SHA512_DIGEST_SIZE / 8] = { + SHA512_H0, SHA512_H1, SHA512_H2, SHA512_H3, + SHA512_H4, SHA512_H5, SHA512_H6, SHA512_H7, +}; + +static inline void copy_hash_init_values(char *key, int digestsize) +{ + u8 i; + __be32 *dkey = (__be32 *)key; + u64 *ldkey = (u64 *)key; + __be64 *sha384 = (__be64 *)sha384_init; + __be64 *sha512 = (__be64 *)sha512_init; + + switch (digestsize) { + case SHA1_DIGEST_SIZE: + for (i = 0; i < SHA1_INIT_STATE; i++) + dkey[i] = cpu_to_be32(sha1_init[i]); + break; + case SHA224_DIGEST_SIZE: + for (i = 0; i < SHA224_INIT_STATE; i++) + dkey[i] = cpu_to_be32(sha224_init[i]); + break; + case SHA256_DIGEST_SIZE: + for (i = 0; i < SHA256_INIT_STATE; i++) + dkey[i] = cpu_to_be32(sha256_init[i]); + break; + case SHA384_DIGEST_SIZE: + for (i = 0; i < SHA384_INIT_STATE; i++) + ldkey[i] = be64_to_cpu(sha384[i]); + break; + case SHA512_DIGEST_SIZE: + for (i = 0; i < SHA512_INIT_STATE; i++) + ldkey[i] = be64_to_cpu(sha512[i]); + break; + } +} + +static const u8 sgl_lengths[20] = { + 0, 1, 2, 3, 4, 4, 5, 6, 7, 7, 8, 9, 10, 10, 11, 12, 13, 13, 14, 15 +}; + +/* Number of len fields(8) * size of one addr field */ +#define PHYSDSGL_MAX_LEN_SIZE 16 + +static inline u16 get_space_for_phys_dsgl(unsigned int sgl_entr) +{ + /* len field size + addr field size */ + return ((sgl_entr >> 3) + ((sgl_entr % 8) ? + 1 : 0)) * PHYSDSGL_MAX_LEN_SIZE + + (sgl_entr << 3) + ((sgl_entr % 2 ? 1 : 0) << 3); +} + +/* The AES s-transform matrix (s-box). */ +static const u8 aes_sbox[256] = { + 99, 124, 119, 123, 242, 107, 111, 197, 48, 1, 103, 43, 254, 215, + 171, 118, 202, 130, 201, 125, 250, 89, 71, 240, 173, 212, 162, 175, + 156, 164, 114, 192, 183, 253, 147, 38, 54, 63, 247, 204, 52, 165, + 229, 241, 113, 216, 49, 21, 4, 199, 35, 195, 24, 150, 5, 154, 7, + 18, 128, 226, 235, 39, 178, 117, 9, 131, 44, 26, 27, 110, 90, + 160, 82, 59, 214, 179, 41, 227, 47, 132, 83, 209, 0, 237, 32, + 252, 177, 91, 106, 203, 190, 57, 74, 76, 88, 207, 208, 239, 170, + 251, 67, 77, 51, 133, 69, 249, 2, 127, 80, 60, 159, 168, 81, + 163, 64, 143, 146, 157, 56, 245, 188, 182, 218, 33, 16, 255, 243, + 210, 205, 12, 19, 236, 95, 151, 68, 23, 196, 167, 126, 61, 100, + 93, 25, 115, 96, 129, 79, 220, 34, 42, 144, 136, 70, 238, 184, + 20, 222, 94, 11, 219, 224, 50, 58, 10, 73, 6, 36, 92, 194, + 211, 172, 98, 145, 149, 228, 121, 231, 200, 55, 109, 141, 213, 78, + 169, 108, 86, 244, 234, 101, 122, 174, 8, 186, 120, 37, 46, 28, 166, + 180, 198, 232, 221, 116, 31, 75, 189, 139, 138, 112, 62, 181, 102, + 72, 3, 246, 14, 97, 53, 87, 185, 134, 193, 29, 158, 225, 248, + 152, 17, 105, 217, 142, 148, 155, 30, 135, 233, 206, 85, 40, 223, + 140, 161, 137, 13, 191, 230, 66, 104, 65, 153, 45, 15, 176, 84, + 187, 22 +}; + +static u32 aes_ks_subword(const u32 w) +{ + u8 bytes[4]; + + *(u32 *)(&bytes[0]) = w; + bytes[0] = aes_sbox[bytes[0]]; + bytes[1] = aes_sbox[bytes[1]]; + bytes[2] = aes_sbox[bytes[2]]; + bytes[3] = aes_sbox[bytes[3]]; + return *(u32 *)(&bytes[0]); +} + +static u32 round_constant[11] = { + 0x01000000, 0x02000000, 0x04000000, 0x08000000, + 0x10000000, 0x20000000, 0x40000000, 0x80000000, + 0x1B000000, 0x36000000, 0x6C000000 +}; + +/* dec_key - OUTPUT - Reverse round key + * key - INPUT - key + * keylength - INPUT - length of the key in number of bits + */ +static inline void get_aes_decrypt_key(unsigned char *dec_key, + const unsigned char *key, + unsigned int keylength) +{ + u32 temp; + u32 w_ring[MAX_NK]; + int i, j, k = 0; + u8 nr, nk; + + switch (keylength) { + case AES_KEYLENGTH_128BIT: + nk = KEYLENGTH_4BYTES; + nr = NUMBER_OF_ROUNDS_10; + break; + + case AES_KEYLENGTH_192BIT: + nk = KEYLENGTH_6BYTES; + nr = NUMBER_OF_ROUNDS_12; + break; + case AES_KEYLENGTH_256BIT: + nk = KEYLENGTH_8BYTES; + nr = NUMBER_OF_ROUNDS_14; + break; + default: + return; + } + for (i = 0; i < nk; i++ ) + w_ring[i] = be32_to_cpu(*(u32 *)&key[4 * i]); + + i = 0; + temp = w_ring[nk - 1]; + while(i + nk < (nr + 1) * 4) { + if(!(i % nk)) { + /* RotWord(temp) */ + temp = (temp << 8) | (temp >> 24); + temp = aes_ks_subword(temp); + temp ^= round_constant[i / nk]; + } + else if (nk == 8 && (i % 4 == 0)) + temp = aes_ks_subword(temp); + w_ring[i % nk] ^= temp; + temp = w_ring[i % nk]; + i++; + } + for (k = 0, j = i % nk; k < nk; k++) { + *((u32 *)dec_key + k) = htonl(w_ring[j]); + j--; + if(j < 0) + j += nk; + } +} + +#endif /* __CHCR_ALGO_H__ */ |