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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>
163 lines
4.8 KiB
C
163 lines
4.8 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 SPU message definitions specific to SPU-M.
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*/
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#ifndef _SPUM_H_
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#define _SPUM_H_
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#define SPU_CRYPTO_OPERATION_GENERIC 0x1
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/* Length of STATUS field in tx and rx packets */
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#define SPU_TX_STATUS_LEN 4
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/* SPU-M error codes */
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#define SPU_STATUS_MASK 0x0000FF00
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#define SPU_STATUS_SUCCESS 0x00000000
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#define SPU_STATUS_INVALID_ICV 0x00000100
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#define SPU_STATUS_ERROR_FLAG 0x00020000
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/* Request message. MH + EMH + BDESC + BD header */
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#define SPU_REQ_FIXED_LEN 24
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/*
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* Max length of a SPU message header. Used to allocate a buffer where
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* the SPU message header is constructed. Can be used for either a SPU-M
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* header or a SPU2 header.
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* For SPU-M, sum of the following:
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* MH - 4 bytes
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* EMH - 4
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* SCTX - 3 +
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* max auth key len - 64
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* max cipher key len - 264 (RC4)
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* max IV len - 16
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* BDESC - 12
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* BD header - 4
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* Total: 371
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*
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* For SPU2, FMD_SIZE (32) plus lengths of hash and cipher keys,
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* hash and cipher IVs. If SPU2 does not support RC4, then
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*/
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#define SPU_HEADER_ALLOC_LEN (SPU_REQ_FIXED_LEN + MAX_KEY_SIZE + \
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MAX_KEY_SIZE + MAX_IV_SIZE)
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/*
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* Response message header length. Normally MH, EMH, BD header, but when
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* BD_SUPPRESS is used for hash requests, there is no BD header.
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*/
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#define SPU_RESP_HDR_LEN 12
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#define SPU_HASH_RESP_HDR_LEN 8
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/*
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* Max value that can be represented in the Payload Length field of the BD
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* header. This is a 16-bit field.
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*/
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#define SPUM_NS2_MAX_PAYLOAD (BIT(16) - 1)
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/*
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* NSP SPU is limited to ~9KB because of FA2 FIFO size limitations;
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* Set MAX_PAYLOAD to 8k to allow for addition of header, digest, etc.
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* and stay within limitation.
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*/
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#define SPUM_NSP_MAX_PAYLOAD 8192
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/* Buffer Descriptor Header [BDESC]. SPU in big-endian mode. */
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struct BDESC_HEADER {
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u16 offset_mac; /* word 0 [31-16] */
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u16 length_mac; /* word 0 [15-0] */
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u16 offset_crypto; /* word 1 [31-16] */
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u16 length_crypto; /* word 1 [15-0] */
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u16 offset_icv; /* word 2 [31-16] */
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u16 offset_iv; /* word 2 [15-0] */
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};
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/* Buffer Data Header [BD]. SPU in big-endian mode. */
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struct BD_HEADER {
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u16 size;
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u16 prev_length;
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};
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/* Command Context Header. SPU-M in big endian mode. */
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struct MHEADER {
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u8 flags; /* [31:24] */
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u8 op_code; /* [23:16] */
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u16 reserved; /* [15:0] */
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};
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/* MH header flags bits */
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#define MH_SUPDT_PRES BIT(0)
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#define MH_HASH_PRES BIT(2)
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#define MH_BD_PRES BIT(3)
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#define MH_MFM_PRES BIT(4)
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#define MH_BDESC_PRES BIT(5)
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#define MH_SCTX_PRES BIT(7)
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/* SCTX word 0 bit offsets and fields masks */
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#define SCTX_SIZE 0x000000FF
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/* SCTX word 1 bit shifts and field masks */
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#define UPDT_OFST 0x000000FF /* offset of SCTX updateable fld */
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#define HASH_TYPE 0x00000300 /* hash alg operation type */
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#define HASH_TYPE_SHIFT 8
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#define HASH_MODE 0x00001C00 /* one of spu2_hash_mode */
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#define HASH_MODE_SHIFT 10
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#define HASH_ALG 0x0000E000 /* hash algorithm */
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#define HASH_ALG_SHIFT 13
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#define CIPHER_TYPE 0x00030000 /* encryption operation type */
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#define CIPHER_TYPE_SHIFT 16
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#define CIPHER_MODE 0x001C0000 /* encryption mode */
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#define CIPHER_MODE_SHIFT 18
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#define CIPHER_ALG 0x00E00000 /* encryption algo */
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#define CIPHER_ALG_SHIFT 21
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#define ICV_IS_512 BIT(27)
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#define ICV_IS_512_SHIFT 27
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#define CIPHER_ORDER BIT(30)
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#define CIPHER_ORDER_SHIFT 30
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#define CIPHER_INBOUND BIT(31)
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#define CIPHER_INBOUND_SHIFT 31
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/* SCTX word 2 bit shifts and field masks */
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#define EXP_IV_SIZE 0x7
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#define IV_OFFSET BIT(3)
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#define IV_OFFSET_SHIFT 3
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#define GEN_IV BIT(5)
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#define GEN_IV_SHIFT 5
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#define EXPLICIT_IV BIT(6)
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#define EXPLICIT_IV_SHIFT 6
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#define SCTX_IV BIT(7)
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#define SCTX_IV_SHIFT 7
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#define ICV_SIZE 0x0F00
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#define ICV_SIZE_SHIFT 8
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#define CHECK_ICV BIT(12)
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#define CHECK_ICV_SHIFT 12
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#define INSERT_ICV BIT(13)
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#define INSERT_ICV_SHIFT 13
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#define BD_SUPPRESS BIT(19)
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#define BD_SUPPRESS_SHIFT 19
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/* Generic Mode Security Context Structure [SCTX] */
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struct SCTX {
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/* word 0: protocol flags */
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u32 proto_flags;
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/* word 1: cipher flags */
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u32 cipher_flags;
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/* word 2: Extended cipher flags */
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u32 ecf;
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};
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struct SPUHEADER {
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struct MHEADER mh;
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u32 emh;
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struct SCTX sa;
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};
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#endif /* _SPUM_H_ */
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