1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * Copyright 2016 Broadcom 4 */ 5 6/* 7 * This file contains SPU message definitions specific to SPU2. 8 */ 9 10#ifndef _SPU2_H 11#define _SPU2_H 12 13enum spu2_cipher_type { 14 SPU2_CIPHER_TYPE_NONE = 0x0, 15 SPU2_CIPHER_TYPE_AES128 = 0x1, 16 SPU2_CIPHER_TYPE_AES192 = 0x2, 17 SPU2_CIPHER_TYPE_AES256 = 0x3, 18 SPU2_CIPHER_TYPE_DES = 0x4, 19 SPU2_CIPHER_TYPE_3DES = 0x5, 20 SPU2_CIPHER_TYPE_LAST 21}; 22 23enum spu2_cipher_mode { 24 SPU2_CIPHER_MODE_ECB = 0x0, 25 SPU2_CIPHER_MODE_CBC = 0x1, 26 SPU2_CIPHER_MODE_CTR = 0x2, 27 SPU2_CIPHER_MODE_CFB = 0x3, 28 SPU2_CIPHER_MODE_OFB = 0x4, 29 SPU2_CIPHER_MODE_XTS = 0x5, 30 SPU2_CIPHER_MODE_CCM = 0x6, 31 SPU2_CIPHER_MODE_GCM = 0x7, 32 SPU2_CIPHER_MODE_LAST 33}; 34 35enum spu2_hash_type { 36 SPU2_HASH_TYPE_NONE = 0x0, 37 SPU2_HASH_TYPE_AES128 = 0x1, 38 SPU2_HASH_TYPE_AES192 = 0x2, 39 SPU2_HASH_TYPE_AES256 = 0x3, 40 SPU2_HASH_TYPE_MD5 = 0x6, 41 SPU2_HASH_TYPE_SHA1 = 0x7, 42 SPU2_HASH_TYPE_SHA224 = 0x8, 43 SPU2_HASH_TYPE_SHA256 = 0x9, 44 SPU2_HASH_TYPE_SHA384 = 0xa, 45 SPU2_HASH_TYPE_SHA512 = 0xb, 46 SPU2_HASH_TYPE_SHA512_224 = 0xc, 47 SPU2_HASH_TYPE_SHA512_256 = 0xd, 48 SPU2_HASH_TYPE_SHA3_224 = 0xe, 49 SPU2_HASH_TYPE_SHA3_256 = 0xf, 50 SPU2_HASH_TYPE_SHA3_384 = 0x10, 51 SPU2_HASH_TYPE_SHA3_512 = 0x11, 52 SPU2_HASH_TYPE_LAST 53}; 54 55enum spu2_hash_mode { 56 SPU2_HASH_MODE_CMAC = 0x0, 57 SPU2_HASH_MODE_CBC_MAC = 0x1, 58 SPU2_HASH_MODE_XCBC_MAC = 0x2, 59 SPU2_HASH_MODE_HMAC = 0x3, 60 SPU2_HASH_MODE_RABIN = 0x4, 61 SPU2_HASH_MODE_CCM = 0x5, 62 SPU2_HASH_MODE_GCM = 0x6, 63 SPU2_HASH_MODE_RESERVED = 0x7, 64 SPU2_HASH_MODE_LAST 65}; 66 67enum spu2_ret_md_opts { 68 SPU2_RET_NO_MD = 0, /* return no metadata */ 69 SPU2_RET_FMD_OMD = 1, /* return both FMD and OMD */ 70 SPU2_RET_FMD_ONLY = 2, /* return only FMD */ 71 SPU2_RET_FMD_OMD_IV = 3, /* return FMD and OMD with just IVs */ 72}; 73 74/* Fixed Metadata format */ 75struct SPU2_FMD { 76 __le64 ctrl0; 77 __le64 ctrl1; 78 __le64 ctrl2; 79 __le64 ctrl3; 80}; 81 82#define FMD_SIZE sizeof(struct SPU2_FMD) 83 84/* Fixed part of request message header length in bytes. Just FMD. */ 85#define SPU2_REQ_FIXED_LEN FMD_SIZE 86#define SPU2_HEADER_ALLOC_LEN (SPU_REQ_FIXED_LEN + \ 87 2 * MAX_KEY_SIZE + 2 * MAX_IV_SIZE) 88 89/* FMD ctrl0 field masks */ 90#define SPU2_CIPH_ENCRYPT_EN 0x1 /* 0: decrypt, 1: encrypt */ 91#define SPU2_CIPH_TYPE 0xF0 /* one of spu2_cipher_type */ 92#define SPU2_CIPH_TYPE_SHIFT 4 93#define SPU2_CIPH_MODE 0xF00 /* one of spu2_cipher_mode */ 94#define SPU2_CIPH_MODE_SHIFT 8 95#define SPU2_CFB_MASK 0x7000 /* cipher feedback mask */ 96#define SPU2_CFB_MASK_SHIFT 12 97#define SPU2_PROTO_SEL 0xF00000 /* MACsec, IPsec, TLS... */ 98#define SPU2_PROTO_SEL_SHIFT 20 99#define SPU2_HASH_FIRST 0x1000000 /* 1: hash input is input pkt 100 * data 101 */ 102#define SPU2_CHK_TAG 0x2000000 /* 1: check digest provided */ 103#define SPU2_HASH_TYPE 0x1F0000000 /* one of spu2_hash_type */ 104#define SPU2_HASH_TYPE_SHIFT 28 105#define SPU2_HASH_MODE 0xF000000000 /* one of spu2_hash_mode */ 106#define SPU2_HASH_MODE_SHIFT 36 107#define SPU2_CIPH_PAD_EN 0x100000000000 /* 1: Add pad to end of payload for 108 * enc 109 */ 110#define SPU2_CIPH_PAD 0xFF000000000000 /* cipher pad value */ 111#define SPU2_CIPH_PAD_SHIFT 48 112 113/* FMD ctrl1 field masks */ 114#define SPU2_TAG_LOC 0x1 /* 1: end of payload, 0: undef */ 115#define SPU2_HAS_FR_DATA 0x2 /* 1: msg has frame data */ 116#define SPU2_HAS_AAD1 0x4 /* 1: msg has AAD1 field */ 117#define SPU2_HAS_NAAD 0x8 /* 1: msg has NAAD field */ 118#define SPU2_HAS_AAD2 0x10 /* 1: msg has AAD2 field */ 119#define SPU2_HAS_ESN 0x20 /* 1: msg has ESN field */ 120#define SPU2_HASH_KEY_LEN 0xFF00 /* len of hash key in bytes. 121 * HMAC only. 122 */ 123#define SPU2_HASH_KEY_LEN_SHIFT 8 124#define SPU2_CIPH_KEY_LEN 0xFF00000 /* len of cipher key in bytes */ 125#define SPU2_CIPH_KEY_LEN_SHIFT 20 126#define SPU2_GENIV 0x10000000 /* 1: hw generates IV */ 127#define SPU2_HASH_IV 0x20000000 /* 1: IV incl in hash */ 128#define SPU2_RET_IV 0x40000000 /* 1: return IV in output msg 129 * b4 payload 130 */ 131#define SPU2_RET_IV_LEN 0xF00000000 /* length in bytes of IV returned. 132 * 0 = 16 bytes 133 */ 134#define SPU2_RET_IV_LEN_SHIFT 32 135#define SPU2_IV_OFFSET 0xF000000000 /* gen IV offset */ 136#define SPU2_IV_OFFSET_SHIFT 36 137#define SPU2_IV_LEN 0x1F0000000000 /* length of input IV in bytes */ 138#define SPU2_IV_LEN_SHIFT 40 139#define SPU2_HASH_TAG_LEN 0x7F000000000000 /* hash tag length in bytes */ 140#define SPU2_HASH_TAG_LEN_SHIFT 48 141#define SPU2_RETURN_MD 0x300000000000000 /* return metadata */ 142#define SPU2_RETURN_MD_SHIFT 56 143#define SPU2_RETURN_FD 0x400000000000000 144#define SPU2_RETURN_AAD1 0x800000000000000 145#define SPU2_RETURN_NAAD 0x1000000000000000 146#define SPU2_RETURN_AAD2 0x2000000000000000 147#define SPU2_RETURN_PAY 0x4000000000000000 /* return payload */ 148 149/* FMD ctrl2 field masks */ 150#define SPU2_AAD1_OFFSET 0xFFF /* byte offset of AAD1 field */ 151#define SPU2_AAD1_LEN 0xFF000 /* length of AAD1 in bytes */ 152#define SPU2_AAD1_LEN_SHIFT 12 153#define SPU2_AAD2_OFFSET 0xFFF00000 /* byte offset of AAD2 field */ 154#define SPU2_AAD2_OFFSET_SHIFT 20 155#define SPU2_PL_OFFSET 0xFFFFFFFF00000000 /* payload offset from AAD2 */ 156#define SPU2_PL_OFFSET_SHIFT 32 157 158/* FMD ctrl3 field masks */ 159#define SPU2_PL_LEN 0xFFFFFFFF /* payload length in bytes */ 160#define SPU2_TLS_LEN 0xFFFF00000000 /* TLS encrypt: cipher len 161 * TLS decrypt: compressed len 162 */ 163#define SPU2_TLS_LEN_SHIFT 32 164 165/* 166 * Max value that can be represented in the Payload Length field of the 167 * ctrl3 word of FMD. 168 */ 169#define SPU2_MAX_PAYLOAD SPU2_PL_LEN 170 171/* Error values returned in STATUS field of response messages */ 172#define SPU2_INVALID_ICV 1 173 174void spu2_dump_msg_hdr(u8 *buf, unsigned int buf_len); 175u32 spu2_ctx_max_payload(enum spu_cipher_alg cipher_alg, 176 enum spu_cipher_mode cipher_mode, 177 unsigned int blocksize); 178u32 spu2_payload_length(u8 *spu_hdr); 179u16 spu2_response_hdr_len(u16 auth_key_len, u16 enc_key_len, bool is_hash); 180u16 spu2_hash_pad_len(enum hash_alg hash_alg, enum hash_mode hash_mode, 181 u32 chunksize, u16 hash_block_size); 182u32 spu2_gcm_ccm_pad_len(enum spu_cipher_mode cipher_mode, 183 unsigned int data_size); 184u32 spu2_assoc_resp_len(enum spu_cipher_mode cipher_mode, 185 unsigned int assoc_len, unsigned int iv_len, 186 bool is_encrypt); 187u8 spu2_aead_ivlen(enum spu_cipher_mode cipher_mode, 188 u16 iv_len); 189enum hash_type spu2_hash_type(u32 src_sent); 190u32 spu2_digest_size(u32 alg_digest_size, enum hash_alg alg, 191 enum hash_type htype); 192u32 spu2_create_request(u8 *spu_hdr, 193 struct spu_request_opts *req_opts, 194 struct spu_cipher_parms *cipher_parms, 195 struct spu_hash_parms *hash_parms, 196 struct spu_aead_parms *aead_parms, 197 unsigned int data_size); 198u16 spu2_cipher_req_init(u8 *spu_hdr, struct spu_cipher_parms *cipher_parms); 199void spu2_cipher_req_finish(u8 *spu_hdr, 200 u16 spu_req_hdr_len, 201 unsigned int is_inbound, 202 struct spu_cipher_parms *cipher_parms, 203 unsigned int data_size); 204void spu2_request_pad(u8 *pad_start, u32 gcm_padding, u32 hash_pad_len, 205 enum hash_alg auth_alg, enum hash_mode auth_mode, 206 unsigned int total_sent, u32 status_padding); 207u8 spu2_xts_tweak_in_payload(void); 208u8 spu2_tx_status_len(void); 209u8 spu2_rx_status_len(void); 210int spu2_status_process(u8 *statp); 211void spu2_ccm_update_iv(unsigned int digestsize, 212 struct spu_cipher_parms *cipher_parms, 213 unsigned int assoclen, unsigned int chunksize, 214 bool is_encrypt, bool is_esp); 215u32 spu2_wordalign_padlen(u32 data_size); 216#endif 217