| /* |
| * Copyright 2016 Broadcom |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License, version 2, as |
| * published by the Free Software Foundation (the "GPL"). |
| * |
| * 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 version 2 (GPLv2) for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * version 2 (GPLv2) along with this source code. |
| */ |
| |
| /* |
| * This file contains SPU message definitions specific to SPU2. |
| */ |
| |
| #ifndef _SPU2_H |
| #define _SPU2_H |
| |
| enum spu2_cipher_type { |
| SPU2_CIPHER_TYPE_NONE = 0x0, |
| SPU2_CIPHER_TYPE_AES128 = 0x1, |
| SPU2_CIPHER_TYPE_AES192 = 0x2, |
| SPU2_CIPHER_TYPE_AES256 = 0x3, |
| SPU2_CIPHER_TYPE_DES = 0x4, |
| SPU2_CIPHER_TYPE_3DES = 0x5, |
| SPU2_CIPHER_TYPE_LAST |
| }; |
| |
| enum spu2_cipher_mode { |
| SPU2_CIPHER_MODE_ECB = 0x0, |
| SPU2_CIPHER_MODE_CBC = 0x1, |
| SPU2_CIPHER_MODE_CTR = 0x2, |
| SPU2_CIPHER_MODE_CFB = 0x3, |
| SPU2_CIPHER_MODE_OFB = 0x4, |
| SPU2_CIPHER_MODE_XTS = 0x5, |
| SPU2_CIPHER_MODE_CCM = 0x6, |
| SPU2_CIPHER_MODE_GCM = 0x7, |
| SPU2_CIPHER_MODE_LAST |
| }; |
| |
| enum spu2_hash_type { |
| SPU2_HASH_TYPE_NONE = 0x0, |
| SPU2_HASH_TYPE_AES128 = 0x1, |
| SPU2_HASH_TYPE_AES192 = 0x2, |
| SPU2_HASH_TYPE_AES256 = 0x3, |
| SPU2_HASH_TYPE_MD5 = 0x6, |
| SPU2_HASH_TYPE_SHA1 = 0x7, |
| SPU2_HASH_TYPE_SHA224 = 0x8, |
| SPU2_HASH_TYPE_SHA256 = 0x9, |
| SPU2_HASH_TYPE_SHA384 = 0xa, |
| SPU2_HASH_TYPE_SHA512 = 0xb, |
| SPU2_HASH_TYPE_SHA512_224 = 0xc, |
| SPU2_HASH_TYPE_SHA512_256 = 0xd, |
| SPU2_HASH_TYPE_SHA3_224 = 0xe, |
| SPU2_HASH_TYPE_SHA3_256 = 0xf, |
| SPU2_HASH_TYPE_SHA3_384 = 0x10, |
| SPU2_HASH_TYPE_SHA3_512 = 0x11, |
| SPU2_HASH_TYPE_LAST |
| }; |
| |
| enum spu2_hash_mode { |
| SPU2_HASH_MODE_CMAC = 0x0, |
| SPU2_HASH_MODE_CBC_MAC = 0x1, |
| SPU2_HASH_MODE_XCBC_MAC = 0x2, |
| SPU2_HASH_MODE_HMAC = 0x3, |
| SPU2_HASH_MODE_RABIN = 0x4, |
| SPU2_HASH_MODE_CCM = 0x5, |
| SPU2_HASH_MODE_GCM = 0x6, |
| SPU2_HASH_MODE_RESERVED = 0x7, |
| SPU2_HASH_MODE_LAST |
| }; |
| |
| enum spu2_ret_md_opts { |
| SPU2_RET_NO_MD = 0, /* return no metadata */ |
| SPU2_RET_FMD_OMD = 1, /* return both FMD and OMD */ |
| SPU2_RET_FMD_ONLY = 2, /* return only FMD */ |
| SPU2_RET_FMD_OMD_IV = 3, /* return FMD and OMD with just IVs */ |
| }; |
| |
| /* Fixed Metadata format */ |
| struct SPU2_FMD { |
| u64 ctrl0; |
| u64 ctrl1; |
| u64 ctrl2; |
| u64 ctrl3; |
| }; |
| |
| #define FMD_SIZE sizeof(struct SPU2_FMD) |
| |
| /* Fixed part of request message header length in bytes. Just FMD. */ |
| #define SPU2_REQ_FIXED_LEN FMD_SIZE |
| #define SPU2_HEADER_ALLOC_LEN (SPU_REQ_FIXED_LEN + \ |
| 2 * MAX_KEY_SIZE + 2 * MAX_IV_SIZE) |
| |
| /* FMD ctrl0 field masks */ |
| #define SPU2_CIPH_ENCRYPT_EN 0x1 /* 0: decrypt, 1: encrypt */ |
| #define SPU2_CIPH_TYPE 0xF0 /* one of spu2_cipher_type */ |
| #define SPU2_CIPH_TYPE_SHIFT 4 |
| #define SPU2_CIPH_MODE 0xF00 /* one of spu2_cipher_mode */ |
| #define SPU2_CIPH_MODE_SHIFT 8 |
| #define SPU2_CFB_MASK 0x7000 /* cipher feedback mask */ |
| #define SPU2_CFB_MASK_SHIFT 12 |
| #define SPU2_PROTO_SEL 0xF00000 /* MACsec, IPsec, TLS... */ |
| #define SPU2_PROTO_SEL_SHIFT 20 |
| #define SPU2_HASH_FIRST 0x1000000 /* 1: hash input is input pkt |
| * data |
| */ |
| #define SPU2_CHK_TAG 0x2000000 /* 1: check digest provided */ |
| #define SPU2_HASH_TYPE 0x1F0000000 /* one of spu2_hash_type */ |
| #define SPU2_HASH_TYPE_SHIFT 28 |
| #define SPU2_HASH_MODE 0xF000000000 /* one of spu2_hash_mode */ |
| #define SPU2_HASH_MODE_SHIFT 36 |
| #define SPU2_CIPH_PAD_EN 0x100000000000 /* 1: Add pad to end of payload for |
| * enc |
| */ |
| #define SPU2_CIPH_PAD 0xFF000000000000 /* cipher pad value */ |
| #define SPU2_CIPH_PAD_SHIFT 48 |
| |
| /* FMD ctrl1 field masks */ |
| #define SPU2_TAG_LOC 0x1 /* 1: end of payload, 0: undef */ |
| #define SPU2_HAS_FR_DATA 0x2 /* 1: msg has frame data */ |
| #define SPU2_HAS_AAD1 0x4 /* 1: msg has AAD1 field */ |
| #define SPU2_HAS_NAAD 0x8 /* 1: msg has NAAD field */ |
| #define SPU2_HAS_AAD2 0x10 /* 1: msg has AAD2 field */ |
| #define SPU2_HAS_ESN 0x20 /* 1: msg has ESN field */ |
| #define SPU2_HASH_KEY_LEN 0xFF00 /* len of hash key in bytes. |
| * HMAC only. |
| */ |
| #define SPU2_HASH_KEY_LEN_SHIFT 8 |
| #define SPU2_CIPH_KEY_LEN 0xFF00000 /* len of cipher key in bytes */ |
| #define SPU2_CIPH_KEY_LEN_SHIFT 20 |
| #define SPU2_GENIV 0x10000000 /* 1: hw generates IV */ |
| #define SPU2_HASH_IV 0x20000000 /* 1: IV incl in hash */ |
| #define SPU2_RET_IV 0x40000000 /* 1: return IV in output msg |
| * b4 payload |
| */ |
| #define SPU2_RET_IV_LEN 0xF00000000 /* length in bytes of IV returned. |
| * 0 = 16 bytes |
| */ |
| #define SPU2_RET_IV_LEN_SHIFT 32 |
| #define SPU2_IV_OFFSET 0xF000000000 /* gen IV offset */ |
| #define SPU2_IV_OFFSET_SHIFT 36 |
| #define SPU2_IV_LEN 0x1F0000000000 /* length of input IV in bytes */ |
| #define SPU2_IV_LEN_SHIFT 40 |
| #define SPU2_HASH_TAG_LEN 0x7F000000000000 /* hash tag length in bytes */ |
| #define SPU2_HASH_TAG_LEN_SHIFT 48 |
| #define SPU2_RETURN_MD 0x300000000000000 /* return metadata */ |
| #define SPU2_RETURN_MD_SHIFT 56 |
| #define SPU2_RETURN_FD 0x400000000000000 |
| #define SPU2_RETURN_AAD1 0x800000000000000 |
| #define SPU2_RETURN_NAAD 0x1000000000000000 |
| #define SPU2_RETURN_AAD2 0x2000000000000000 |
| #define SPU2_RETURN_PAY 0x4000000000000000 /* return payload */ |
| |
| /* FMD ctrl2 field masks */ |
| #define SPU2_AAD1_OFFSET 0xFFF /* byte offset of AAD1 field */ |
| #define SPU2_AAD1_LEN 0xFF000 /* length of AAD1 in bytes */ |
| #define SPU2_AAD1_LEN_SHIFT 12 |
| #define SPU2_AAD2_OFFSET 0xFFF00000 /* byte offset of AAD2 field */ |
| #define SPU2_AAD2_OFFSET_SHIFT 20 |
| #define SPU2_PL_OFFSET 0xFFFFFFFF00000000 /* payload offset from AAD2 */ |
| #define SPU2_PL_OFFSET_SHIFT 32 |
| |
| /* FMD ctrl3 field masks */ |
| #define SPU2_PL_LEN 0xFFFFFFFF /* payload length in bytes */ |
| #define SPU2_TLS_LEN 0xFFFF00000000 /* TLS encrypt: cipher len |
| * TLS decrypt: compressed len |
| */ |
| #define SPU2_TLS_LEN_SHIFT 32 |
| |
| /* |
| * Max value that can be represented in the Payload Length field of the |
| * ctrl3 word of FMD. |
| */ |
| #define SPU2_MAX_PAYLOAD SPU2_PL_LEN |
| |
| /* Error values returned in STATUS field of response messages */ |
| #define SPU2_INVALID_ICV 1 |
| |
| void spu2_dump_msg_hdr(u8 *buf, unsigned int buf_len); |
| u32 spu2_ctx_max_payload(enum spu_cipher_alg cipher_alg, |
| enum spu_cipher_mode cipher_mode, |
| unsigned int blocksize); |
| u32 spu2_payload_length(u8 *spu_hdr); |
| u16 spu2_response_hdr_len(u16 auth_key_len, u16 enc_key_len, bool is_hash); |
| u16 spu2_hash_pad_len(enum hash_alg hash_alg, enum hash_mode hash_mode, |
| u32 chunksize, u16 hash_block_size); |
| u32 spu2_gcm_ccm_pad_len(enum spu_cipher_mode cipher_mode, |
| unsigned int data_size); |
| u32 spu2_assoc_resp_len(enum spu_cipher_mode cipher_mode, |
| unsigned int assoc_len, unsigned int iv_len, |
| bool is_encrypt); |
| u8 spu2_aead_ivlen(enum spu_cipher_mode cipher_mode, |
| u16 iv_len); |
| enum hash_type spu2_hash_type(u32 src_sent); |
| u32 spu2_digest_size(u32 alg_digest_size, enum hash_alg alg, |
| enum hash_type htype); |
| u32 spu2_create_request(u8 *spu_hdr, |
| struct spu_request_opts *req_opts, |
| struct spu_cipher_parms *cipher_parms, |
| struct spu_hash_parms *hash_parms, |
| struct spu_aead_parms *aead_parms, |
| unsigned int data_size); |
| u16 spu2_cipher_req_init(u8 *spu_hdr, struct spu_cipher_parms *cipher_parms); |
| void spu2_cipher_req_finish(u8 *spu_hdr, |
| u16 spu_req_hdr_len, |
| unsigned int is_inbound, |
| struct spu_cipher_parms *cipher_parms, |
| bool update_key, |
| unsigned int data_size); |
| void spu2_request_pad(u8 *pad_start, u32 gcm_padding, u32 hash_pad_len, |
| enum hash_alg auth_alg, enum hash_mode auth_mode, |
| unsigned int total_sent, u32 status_padding); |
| u8 spu2_xts_tweak_in_payload(void); |
| u8 spu2_tx_status_len(void); |
| u8 spu2_rx_status_len(void); |
| int spu2_status_process(u8 *statp); |
| void spu2_ccm_update_iv(unsigned int digestsize, |
| struct spu_cipher_parms *cipher_parms, |
| unsigned int assoclen, unsigned int chunksize, |
| bool is_encrypt, bool is_esp); |
| u32 spu2_wordalign_padlen(u32 data_size); |
| #endif |