forked from Minki/linux
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Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 16 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081201.771169395@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
277 lines
7.5 KiB
C
277 lines
7.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright 2016 Broadcom
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*/
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/*
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* This file contains the definition of SPU messages. There are currently two
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* SPU message formats: SPU-M and SPU2. The hardware uses different values to
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* identify the same things in SPU-M vs SPU2. So this file defines values that
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* are hardware independent. Software can use these values for any version of
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* SPU hardware. These values are used in APIs in spu.c. Functions internal to
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* spu.c and spu2.c convert these to hardware-specific values.
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*/
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#ifndef _SPU_H
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#define _SPU_H
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#include <linux/types.h>
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#include <linux/scatterlist.h>
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#include <crypto/sha.h>
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enum spu_cipher_alg {
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CIPHER_ALG_NONE = 0x0,
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CIPHER_ALG_RC4 = 0x1,
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CIPHER_ALG_DES = 0x2,
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CIPHER_ALG_3DES = 0x3,
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CIPHER_ALG_AES = 0x4,
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CIPHER_ALG_LAST = 0x5
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};
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enum spu_cipher_mode {
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CIPHER_MODE_NONE = 0x0,
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CIPHER_MODE_ECB = 0x0,
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CIPHER_MODE_CBC = 0x1,
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CIPHER_MODE_OFB = 0x2,
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CIPHER_MODE_CFB = 0x3,
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CIPHER_MODE_CTR = 0x4,
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CIPHER_MODE_CCM = 0x5,
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CIPHER_MODE_GCM = 0x6,
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CIPHER_MODE_XTS = 0x7,
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CIPHER_MODE_LAST = 0x8
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};
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enum spu_cipher_type {
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CIPHER_TYPE_NONE = 0x0,
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CIPHER_TYPE_DES = 0x0,
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CIPHER_TYPE_3DES = 0x0,
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CIPHER_TYPE_INIT = 0x0, /* used for ARC4 */
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CIPHER_TYPE_AES128 = 0x0,
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CIPHER_TYPE_AES192 = 0x1,
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CIPHER_TYPE_UPDT = 0x1, /* used for ARC4 */
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CIPHER_TYPE_AES256 = 0x2,
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};
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enum hash_alg {
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HASH_ALG_NONE = 0x0,
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HASH_ALG_MD5 = 0x1,
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HASH_ALG_SHA1 = 0x2,
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HASH_ALG_SHA224 = 0x3,
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HASH_ALG_SHA256 = 0x4,
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HASH_ALG_AES = 0x5,
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HASH_ALG_SHA384 = 0x6,
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HASH_ALG_SHA512 = 0x7,
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/* Keep SHA3 algorithms at the end always */
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HASH_ALG_SHA3_224 = 0x8,
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HASH_ALG_SHA3_256 = 0x9,
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HASH_ALG_SHA3_384 = 0xa,
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HASH_ALG_SHA3_512 = 0xb,
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HASH_ALG_LAST
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};
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enum hash_mode {
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HASH_MODE_NONE = 0x0,
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HASH_MODE_HASH = 0x0,
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HASH_MODE_XCBC = 0x0,
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HASH_MODE_CMAC = 0x1,
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HASH_MODE_CTXT = 0x1,
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HASH_MODE_HMAC = 0x2,
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HASH_MODE_RABIN = 0x4,
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HASH_MODE_FHMAC = 0x6,
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HASH_MODE_CCM = 0x5,
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HASH_MODE_GCM = 0x6,
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};
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enum hash_type {
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HASH_TYPE_NONE = 0x0,
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HASH_TYPE_FULL = 0x0,
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HASH_TYPE_INIT = 0x1,
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HASH_TYPE_UPDT = 0x2,
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HASH_TYPE_FIN = 0x3,
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HASH_TYPE_AES128 = 0x0,
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HASH_TYPE_AES192 = 0x1,
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HASH_TYPE_AES256 = 0x2
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};
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enum aead_type {
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AES_CCM,
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AES_GCM,
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AUTHENC,
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AEAD_TYPE_LAST
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};
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extern char *hash_alg_name[HASH_ALG_LAST];
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extern char *aead_alg_name[AEAD_TYPE_LAST];
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struct spu_request_opts {
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bool is_inbound;
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bool auth_first;
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bool is_aead;
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bool is_esp;
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bool bd_suppress;
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bool is_rfc4543;
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};
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struct spu_cipher_parms {
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enum spu_cipher_alg alg;
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enum spu_cipher_mode mode;
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enum spu_cipher_type type;
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u8 *key_buf;
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u16 key_len;
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/* iv_buf and iv_len include salt, if applicable */
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u8 *iv_buf;
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u16 iv_len;
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};
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struct spu_hash_parms {
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enum hash_alg alg;
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enum hash_mode mode;
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enum hash_type type;
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u8 digestsize;
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u8 *key_buf;
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u16 key_len;
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u16 prebuf_len;
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/* length of hash pad. signed, needs to handle roll-overs */
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int pad_len;
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};
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struct spu_aead_parms {
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u32 assoc_size;
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u16 iv_len; /* length of IV field between assoc data and data */
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u8 aad_pad_len; /* For AES GCM/CCM, length of padding after AAD */
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u8 data_pad_len;/* For AES GCM/CCM, length of padding after data */
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bool return_iv; /* True if SPU should return an IV */
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u32 ret_iv_len; /* Length in bytes of returned IV */
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u32 ret_iv_off; /* Offset into full IV if partial IV returned */
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};
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/************** SPU sizes ***************/
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#define SPU_RX_STATUS_LEN 4
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/* Max length of padding for 4-byte alignment of STATUS field */
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#define SPU_STAT_PAD_MAX 4
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/* Max length of pad fragment. 4 is for 4-byte alignment of STATUS field */
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#define SPU_PAD_LEN_MAX (SPU_GCM_CCM_ALIGN + MAX_HASH_BLOCK_SIZE + \
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SPU_STAT_PAD_MAX)
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/* GCM and CCM require 16-byte alignment */
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#define SPU_GCM_CCM_ALIGN 16
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/* Length up SUPDT field in SPU response message for RC4 */
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#define SPU_SUPDT_LEN 260
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/* SPU status error codes. These used as common error codes across all
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* SPU variants.
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*/
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#define SPU_INVALID_ICV 1
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/* Indicates no limit to the length of the payload in a SPU message */
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#define SPU_MAX_PAYLOAD_INF 0xFFFFFFFF
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/* Size of XTS tweak ("i" parameter), in bytes */
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#define SPU_XTS_TWEAK_SIZE 16
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/* CCM B_0 field definitions, common for SPU-M and SPU2 */
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#define CCM_B0_ADATA 0x40
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#define CCM_B0_ADATA_SHIFT 6
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#define CCM_B0_M_PRIME 0x38
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#define CCM_B0_M_PRIME_SHIFT 3
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#define CCM_B0_L_PRIME 0x07
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#define CCM_B0_L_PRIME_SHIFT 0
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#define CCM_ESP_L_VALUE 4
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/**
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* spu_req_incl_icv() - Return true if SPU request message should include the
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* ICV as a separate buffer.
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* @cipher_mode: the cipher mode being requested
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* @is_encrypt: true if encrypting. false if decrypting.
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*
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* Return: true if ICV to be included as separate buffer
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*/
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static __always_inline bool spu_req_incl_icv(enum spu_cipher_mode cipher_mode,
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bool is_encrypt)
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{
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if ((cipher_mode == CIPHER_MODE_GCM) && !is_encrypt)
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return true;
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if ((cipher_mode == CIPHER_MODE_CCM) && !is_encrypt)
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return true;
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return false;
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}
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static __always_inline u32 spu_real_db_size(u32 assoc_size,
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u32 aead_iv_buf_len,
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u32 prebuf_len,
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u32 data_size,
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u32 aad_pad_len,
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u32 gcm_pad_len,
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u32 hash_pad_len)
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{
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return assoc_size + aead_iv_buf_len + prebuf_len + data_size +
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aad_pad_len + gcm_pad_len + hash_pad_len;
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}
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/************** SPU Functions Prototypes **************/
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void spum_dump_msg_hdr(u8 *buf, unsigned int buf_len);
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u32 spum_ns2_ctx_max_payload(enum spu_cipher_alg cipher_alg,
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enum spu_cipher_mode cipher_mode,
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unsigned int blocksize);
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u32 spum_nsp_ctx_max_payload(enum spu_cipher_alg cipher_alg,
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enum spu_cipher_mode cipher_mode,
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unsigned int blocksize);
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u32 spum_payload_length(u8 *spu_hdr);
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u16 spum_response_hdr_len(u16 auth_key_len, u16 enc_key_len, bool is_hash);
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u16 spum_hash_pad_len(enum hash_alg hash_alg, enum hash_mode hash_mode,
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u32 chunksize, u16 hash_block_size);
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u32 spum_gcm_ccm_pad_len(enum spu_cipher_mode cipher_mode,
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unsigned int data_size);
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u32 spum_assoc_resp_len(enum spu_cipher_mode cipher_mode,
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unsigned int assoc_len, unsigned int iv_len,
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bool is_encrypt);
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u8 spum_aead_ivlen(enum spu_cipher_mode cipher_mode, u16 iv_len);
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bool spu_req_incl_icv(enum spu_cipher_mode cipher_mode, bool is_encrypt);
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enum hash_type spum_hash_type(u32 src_sent);
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u32 spum_digest_size(u32 alg_digest_size, enum hash_alg alg,
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enum hash_type htype);
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u32 spum_create_request(u8 *spu_hdr,
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struct spu_request_opts *req_opts,
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struct spu_cipher_parms *cipher_parms,
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struct spu_hash_parms *hash_parms,
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struct spu_aead_parms *aead_parms,
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unsigned int data_size);
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u16 spum_cipher_req_init(u8 *spu_hdr, struct spu_cipher_parms *cipher_parms);
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void spum_cipher_req_finish(u8 *spu_hdr,
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u16 spu_req_hdr_len,
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unsigned int is_inbound,
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struct spu_cipher_parms *cipher_parms,
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bool update_key,
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unsigned int data_size);
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void spum_request_pad(u8 *pad_start,
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u32 gcm_padding,
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u32 hash_pad_len,
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enum hash_alg auth_alg,
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enum hash_mode auth_mode,
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unsigned int total_sent, u32 status_padding);
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u8 spum_xts_tweak_in_payload(void);
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u8 spum_tx_status_len(void);
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u8 spum_rx_status_len(void);
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int spum_status_process(u8 *statp);
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void spum_ccm_update_iv(unsigned int digestsize,
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struct spu_cipher_parms *cipher_parms,
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unsigned int assoclen,
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unsigned int chunksize,
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bool is_encrypt,
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bool is_esp);
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u32 spum_wordalign_padlen(u32 data_size);
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#endif
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