164 lines
4.8 KiB
C
164 lines
4.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright 2016 Broadcom
|
|
*/
|
|
|
|
/*
|
|
* This file contains SPU message definitions specific to SPU-M.
|
|
*/
|
|
|
|
#ifndef _SPUM_H_
|
|
#define _SPUM_H_
|
|
|
|
#define SPU_CRYPTO_OPERATION_GENERIC 0x1
|
|
|
|
/* Length of STATUS field in tx and rx packets */
|
|
#define SPU_TX_STATUS_LEN 4
|
|
|
|
/* SPU-M error codes */
|
|
#define SPU_STATUS_MASK 0x0000FF00
|
|
#define SPU_STATUS_SUCCESS 0x00000000
|
|
#define SPU_STATUS_INVALID_ICV 0x00000100
|
|
|
|
#define SPU_STATUS_ERROR_FLAG 0x00020000
|
|
|
|
/* Request message. MH + EMH + BDESC + BD header */
|
|
#define SPU_REQ_FIXED_LEN 24
|
|
|
|
/*
|
|
* Max length of a SPU message header. Used to allocate a buffer where
|
|
* the SPU message header is constructed. Can be used for either a SPU-M
|
|
* header or a SPU2 header.
|
|
* For SPU-M, sum of the following:
|
|
* MH - 4 bytes
|
|
* EMH - 4
|
|
* SCTX - 3 +
|
|
* max auth key len - 64
|
|
* max cipher key len - 264 (RC4)
|
|
* max IV len - 16
|
|
* BDESC - 12
|
|
* BD header - 4
|
|
* Total: 371
|
|
*
|
|
* For SPU2, FMD_SIZE (32) plus lengths of hash and cipher keys,
|
|
* hash and cipher IVs. If SPU2 does not support RC4, then
|
|
*/
|
|
#define SPU_HEADER_ALLOC_LEN (SPU_REQ_FIXED_LEN + MAX_KEY_SIZE + \
|
|
MAX_KEY_SIZE + MAX_IV_SIZE)
|
|
|
|
/*
|
|
* Response message header length. Normally MH, EMH, BD header, but when
|
|
* BD_SUPPRESS is used for hash requests, there is no BD header.
|
|
*/
|
|
#define SPU_RESP_HDR_LEN 12
|
|
#define SPU_HASH_RESP_HDR_LEN 8
|
|
|
|
/*
|
|
* Max value that can be represented in the Payload Length field of the BD
|
|
* header. This is a 16-bit field.
|
|
*/
|
|
#define SPUM_NS2_MAX_PAYLOAD (BIT(16) - 1)
|
|
|
|
/*
|
|
* NSP SPU is limited to ~9KB because of FA2 FIFO size limitations;
|
|
* Set MAX_PAYLOAD to 8k to allow for addition of header, digest, etc.
|
|
* and stay within limitation.
|
|
*/
|
|
|
|
#define SPUM_NSP_MAX_PAYLOAD 8192
|
|
|
|
/* Buffer Descriptor Header [BDESC]. SPU in big-endian mode. */
|
|
struct BDESC_HEADER {
|
|
__be16 offset_mac; /* word 0 [31-16] */
|
|
__be16 length_mac; /* word 0 [15-0] */
|
|
__be16 offset_crypto; /* word 1 [31-16] */
|
|
__be16 length_crypto; /* word 1 [15-0] */
|
|
__be16 offset_icv; /* word 2 [31-16] */
|
|
__be16 offset_iv; /* word 2 [15-0] */
|
|
};
|
|
|
|
/* Buffer Data Header [BD]. SPU in big-endian mode. */
|
|
struct BD_HEADER {
|
|
__be16 size;
|
|
__be16 prev_length;
|
|
};
|
|
|
|
/* Command Context Header. SPU-M in big endian mode. */
|
|
struct MHEADER {
|
|
u8 flags; /* [31:24] */
|
|
u8 op_code; /* [23:16] */
|
|
u16 reserved; /* [15:0] */
|
|
};
|
|
|
|
/* MH header flags bits */
|
|
#define MH_SUPDT_PRES BIT(0)
|
|
#define MH_HASH_PRES BIT(2)
|
|
#define MH_BD_PRES BIT(3)
|
|
#define MH_MFM_PRES BIT(4)
|
|
#define MH_BDESC_PRES BIT(5)
|
|
#define MH_SCTX_PRES BIT(7)
|
|
|
|
/* SCTX word 0 bit offsets and fields masks */
|
|
#define SCTX_SIZE 0x000000FF
|
|
|
|
/* SCTX word 1 bit shifts and field masks */
|
|
#define UPDT_OFST 0x000000FF /* offset of SCTX updateable fld */
|
|
#define HASH_TYPE 0x00000300 /* hash alg operation type */
|
|
#define HASH_TYPE_SHIFT 8
|
|
#define HASH_MODE 0x00001C00 /* one of spu2_hash_mode */
|
|
#define HASH_MODE_SHIFT 10
|
|
#define HASH_ALG 0x0000E000 /* hash algorithm */
|
|
#define HASH_ALG_SHIFT 13
|
|
#define CIPHER_TYPE 0x00030000 /* encryption operation type */
|
|
#define CIPHER_TYPE_SHIFT 16
|
|
#define CIPHER_MODE 0x001C0000 /* encryption mode */
|
|
#define CIPHER_MODE_SHIFT 18
|
|
#define CIPHER_ALG 0x00E00000 /* encryption algo */
|
|
#define CIPHER_ALG_SHIFT 21
|
|
#define ICV_IS_512 BIT(27)
|
|
#define ICV_IS_512_SHIFT 27
|
|
#define CIPHER_ORDER BIT(30)
|
|
#define CIPHER_ORDER_SHIFT 30
|
|
#define CIPHER_INBOUND BIT(31)
|
|
#define CIPHER_INBOUND_SHIFT 31
|
|
|
|
/* SCTX word 2 bit shifts and field masks */
|
|
#define EXP_IV_SIZE 0x7
|
|
#define IV_OFFSET BIT(3)
|
|
#define IV_OFFSET_SHIFT 3
|
|
#define GEN_IV BIT(5)
|
|
#define GEN_IV_SHIFT 5
|
|
#define EXPLICIT_IV BIT(6)
|
|
#define EXPLICIT_IV_SHIFT 6
|
|
#define SCTX_IV BIT(7)
|
|
#define SCTX_IV_SHIFT 7
|
|
#define ICV_SIZE 0x0F00
|
|
#define ICV_SIZE_SHIFT 8
|
|
#define CHECK_ICV BIT(12)
|
|
#define CHECK_ICV_SHIFT 12
|
|
#define INSERT_ICV BIT(13)
|
|
#define INSERT_ICV_SHIFT 13
|
|
#define BD_SUPPRESS BIT(19)
|
|
#define BD_SUPPRESS_SHIFT 19
|
|
|
|
/* Generic Mode Security Context Structure [SCTX] */
|
|
struct SCTX {
|
|
/* word 0: protocol flags */
|
|
__be32 proto_flags;
|
|
|
|
/* word 1: cipher flags */
|
|
__be32 cipher_flags;
|
|
|
|
/* word 2: Extended cipher flags */
|
|
__be32 ecf;
|
|
|
|
};
|
|
|
|
struct SPUHEADER {
|
|
struct MHEADER mh;
|
|
u32 emh;
|
|
struct SCTX sa;
|
|
};
|
|
|
|
#endif /* _SPUM_H_ */
|