| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Rob Rice | 892 | 100.00% | 1 | 100.00% |
| Total | 892 | 1 |
/* * 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 the definition of SPU messages. There are currently two * SPU message formats: SPU-M and SPU2. The hardware uses different values to * identify the same things in SPU-M vs SPU2. So this file defines values that * are hardware independent. Software can use these values for any version of * SPU hardware. These values are used in APIs in spu.c. Functions internal to * spu.c and spu2.c convert these to hardware-specific values. */ #ifndef _SPU_H #define _SPU_H #include <linux/types.h> #include <linux/scatterlist.h> #include <crypto/sha.h> enum spu_cipher_alg { CIPHER_ALG_NONE = 0x0, CIPHER_ALG_RC4 = 0x1, CIPHER_ALG_DES = 0x2, CIPHER_ALG_3DES = 0x3, CIPHER_ALG_AES = 0x4, CIPHER_ALG_LAST = 0x5 }; enum spu_cipher_mode { CIPHER_MODE_NONE = 0x0, CIPHER_MODE_ECB = 0x0, CIPHER_MODE_CBC = 0x1, CIPHER_MODE_OFB = 0x2, CIPHER_MODE_CFB = 0x3, CIPHER_MODE_CTR = 0x4, CIPHER_MODE_CCM = 0x5, CIPHER_MODE_GCM = 0x6, CIPHER_MODE_XTS = 0x7, CIPHER_MODE_LAST = 0x8 }; enum spu_cipher_type { CIPHER_TYPE_NONE = 0x0, CIPHER_TYPE_DES = 0x0, CIPHER_TYPE_3DES = 0x0, CIPHER_TYPE_INIT = 0x0, /* used for ARC4 */ CIPHER_TYPE_AES128 = 0x0, CIPHER_TYPE_AES192 = 0x1, CIPHER_TYPE_UPDT = 0x1, /* used for ARC4 */ CIPHER_TYPE_AES256 = 0x2, }; enum hash_alg { HASH_ALG_NONE = 0x0, HASH_ALG_MD5 = 0x1, HASH_ALG_SHA1 = 0x2, HASH_ALG_SHA224 = 0x3, HASH_ALG_SHA256 = 0x4, HASH_ALG_AES = 0x5, HASH_ALG_SHA384 = 0x6, HASH_ALG_SHA512 = 0x7, /* Keep SHA3 algorithms at the end always */ HASH_ALG_SHA3_224 = 0x8, HASH_ALG_SHA3_256 = 0x9, HASH_ALG_SHA3_384 = 0xa, HASH_ALG_SHA3_512 = 0xb, HASH_ALG_LAST }; enum hash_mode { HASH_MODE_NONE = 0x0, HASH_MODE_HASH = 0x0, HASH_MODE_XCBC = 0x0, HASH_MODE_CMAC = 0x1, HASH_MODE_CTXT = 0x1, HASH_MODE_HMAC = 0x2, HASH_MODE_RABIN = 0x4, HASH_MODE_FHMAC = 0x6, HASH_MODE_CCM = 0x5, HASH_MODE_GCM = 0x6, }; enum hash_type { HASH_TYPE_NONE = 0x0, HASH_TYPE_FULL = 0x0, HASH_TYPE_INIT = 0x1, HASH_TYPE_UPDT = 0x2, HASH_TYPE_FIN = 0x3, HASH_TYPE_AES128 = 0x0, HASH_TYPE_AES192 = 0x1, HASH_TYPE_AES256 = 0x2 }; enum aead_type { AES_CCM, AES_GCM, AUTHENC, AEAD_TYPE_LAST }; extern char *hash_alg_name[HASH_ALG_LAST]; extern char *aead_alg_name[AEAD_TYPE_LAST]; struct spu_request_opts { bool is_inbound; bool auth_first; bool is_aead; bool is_esp; bool bd_suppress; bool is_rfc4543; }; struct spu_cipher_parms { enum spu_cipher_alg alg; enum spu_cipher_mode mode; enum spu_cipher_type type; u8 *key_buf; u16 key_len; /* iv_buf and iv_len include salt, if applicable */ u8 *iv_buf; u16 iv_len; }; struct spu_hash_parms { enum hash_alg alg; enum hash_mode mode; enum hash_type type; u8 digestsize; u8 *key_buf; u16 key_len; u16 prebuf_len; /* length of hash pad. signed, needs to handle roll-overs */ int pad_len; }; struct spu_aead_parms { u32 assoc_size; u16 iv_len; /* length of IV field between assoc data and data */ u8 aad_pad_len; /* For AES GCM/CCM, length of padding after AAD */ u8 data_pad_len;/* For AES GCM/CCM, length of padding after data */ bool return_iv; /* True if SPU should return an IV */ u32 ret_iv_len; /* Length in bytes of returned IV */ u32 ret_iv_off; /* Offset into full IV if partial IV returned */ }; /************** SPU sizes ***************/ #define SPU_RX_STATUS_LEN 4 /* Max length of padding for 4-byte alignment of STATUS field */ #define SPU_STAT_PAD_MAX 4 /* Max length of pad fragment. 4 is for 4-byte alignment of STATUS field */ #define SPU_PAD_LEN_MAX (SPU_GCM_CCM_ALIGN + MAX_HASH_BLOCK_SIZE + \ SPU_STAT_PAD_MAX) /* GCM and CCM require 16-byte alignment */ #define SPU_GCM_CCM_ALIGN 16 /* Length up SUPDT field in SPU response message for RC4 */ #define SPU_SUPDT_LEN 260 /* SPU status error codes. These used as common error codes across all * SPU variants. */ #define SPU_INVALID_ICV 1 /* Indicates no limit to the length of the payload in a SPU message */ #define SPU_MAX_PAYLOAD_INF 0xFFFFFFFF /* Size of XTS tweak ("i" parameter), in bytes */ #define SPU_XTS_TWEAK_SIZE 16 /* CCM B_0 field definitions, common for SPU-M and SPU2 */ #define CCM_B0_ADATA 0x40 #define CCM_B0_ADATA_SHIFT 6 #define CCM_B0_M_PRIME 0x38 #define CCM_B0_M_PRIME_SHIFT 3 #define CCM_B0_L_PRIME 0x07 #define CCM_B0_L_PRIME_SHIFT 0 #define CCM_ESP_L_VALUE 4 /** * spu_req_incl_icv() - Return true if SPU request message should include the * ICV as a separate buffer. * @cipher_mode: the cipher mode being requested * @is_encrypt: true if encrypting. false if decrypting. * * Return: true if ICV to be included as separate buffer */ static __always_inline bool spu_req_incl_icv(enum spu_cipher_mode cipher_mode, bool is_encrypt) { if ((cipher_mode == CIPHER_MODE_GCM) && !is_encrypt) return true; if ((cipher_mode == CIPHER_MODE_CCM) && !is_encrypt) return true; return false; } static __always_inline u32 spu_real_db_size(u32 assoc_size, u32 aead_iv_buf_len, u32 prebuf_len, u32 data_size, u32 aad_pad_len, u32 gcm_pad_len, u32 hash_pad_len) { return assoc_size + aead_iv_buf_len + prebuf_len + data_size + aad_pad_len + gcm_pad_len + hash_pad_len; } /************** SPU Functions Prototypes **************/ void spum_dump_msg_hdr(u8 *buf, unsigned int buf_len); u32 spum_ns2_ctx_max_payload(enum spu_cipher_alg cipher_alg, enum spu_cipher_mode cipher_mode, unsigned int blocksize); u32 spum_nsp_ctx_max_payload(enum spu_cipher_alg cipher_alg, enum spu_cipher_mode cipher_mode, unsigned int blocksize); u32 spum_payload_length(u8 *spu_hdr); u16 spum_response_hdr_len(u16 auth_key_len, u16 enc_key_len, bool is_hash); u16 spum_hash_pad_len(enum hash_alg hash_alg, enum hash_mode hash_mode, u32 chunksize, u16 hash_block_size); u32 spum_gcm_ccm_pad_len(enum spu_cipher_mode cipher_mode, unsigned int data_size); u32 spum_assoc_resp_len(enum spu_cipher_mode cipher_mode, unsigned int assoc_len, unsigned int iv_len, bool is_encrypt); u8 spum_aead_ivlen(enum spu_cipher_mode cipher_mode, u16 iv_len); bool spu_req_incl_icv(enum spu_cipher_mode cipher_mode, bool is_encrypt); enum hash_type spum_hash_type(u32 src_sent); u32 spum_digest_size(u32 alg_digest_size, enum hash_alg alg, enum hash_type htype); u32 spum_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 spum_cipher_req_init(u8 *spu_hdr, struct spu_cipher_parms *cipher_parms); void spum_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 spum_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 spum_xts_tweak_in_payload(void); u8 spum_tx_status_len(void); u8 spum_rx_status_len(void); int spum_status_process(u8 *statp); void spum_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 spum_wordalign_padlen(u32 data_size); #endif
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