| /* |
| * AMD Cryptographic Coprocessor (CCP) driver |
| * |
| * Copyright (C) 2013,2016 Advanced Micro Devices, Inc. |
| * |
| * Author: Tom Lendacky <thomas.lendacky@amd.com> |
| * Author: Gary R Hook <gary.hook@amd.com> |
| * |
| * 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. |
| */ |
| |
| #ifndef __CCP_H__ |
| #define __CCP_H__ |
| |
| #include <linux/scatterlist.h> |
| #include <linux/workqueue.h> |
| #include <linux/list.h> |
| #include <crypto/aes.h> |
| #include <crypto/sha.h> |
| |
| |
| struct ccp_device; |
| struct ccp_cmd; |
| |
| #if defined(CONFIG_CRYPTO_DEV_CCP_DD) || \ |
| defined(CONFIG_CRYPTO_DEV_CCP_DD_MODULE) |
| |
| /** |
| * ccp_present - check if a CCP device is present |
| * |
| * Returns zero if a CCP device is present, -ENODEV otherwise. |
| */ |
| int ccp_present(void); |
| |
| #define CCP_VSIZE 16 |
| #define CCP_VMASK ((unsigned int)((1 << CCP_VSIZE) - 1)) |
| #define CCP_VERSION(v, r) ((unsigned int)((v << CCP_VSIZE) \ |
| | (r & CCP_VMASK))) |
| |
| /** |
| * ccp_version - get the version of the CCP |
| * |
| * Returns a positive version number, or zero if no CCP |
| */ |
| unsigned int ccp_version(void); |
| |
| /** |
| * ccp_enqueue_cmd - queue an operation for processing by the CCP |
| * |
| * @cmd: ccp_cmd struct to be processed |
| * |
| * Refer to the ccp_cmd struct below for required fields. |
| * |
| * Queue a cmd to be processed by the CCP. If queueing the cmd |
| * would exceed the defined length of the cmd queue the cmd will |
| * only be queued if the CCP_CMD_MAY_BACKLOG flag is set and will |
| * result in a return code of -EBUSY. |
| * |
| * The callback routine specified in the ccp_cmd struct will be |
| * called to notify the caller of completion (if the cmd was not |
| * backlogged) or advancement out of the backlog. If the cmd has |
| * advanced out of the backlog the "err" value of the callback |
| * will be -EINPROGRESS. Any other "err" value during callback is |
| * the result of the operation. |
| * |
| * The cmd has been successfully queued if: |
| * the return code is -EINPROGRESS or |
| * the return code is -EBUSY and CCP_CMD_MAY_BACKLOG flag is set |
| */ |
| int ccp_enqueue_cmd(struct ccp_cmd *cmd); |
| |
| #else /* CONFIG_CRYPTO_DEV_CCP_DD is not enabled */ |
| |
| static inline int ccp_present(void) |
| { |
| return -ENODEV; |
| } |
| |
| static inline unsigned int ccp_version(void) |
| { |
| return 0; |
| } |
| |
| static inline int ccp_enqueue_cmd(struct ccp_cmd *cmd) |
| { |
| return -ENODEV; |
| } |
| |
| #endif /* CONFIG_CRYPTO_DEV_CCP_DD */ |
| |
| |
| /***** AES engine *****/ |
| /** |
| * ccp_aes_type - AES key size |
| * |
| * @CCP_AES_TYPE_128: 128-bit key |
| * @CCP_AES_TYPE_192: 192-bit key |
| * @CCP_AES_TYPE_256: 256-bit key |
| */ |
| enum ccp_aes_type { |
| CCP_AES_TYPE_128 = 0, |
| CCP_AES_TYPE_192, |
| CCP_AES_TYPE_256, |
| CCP_AES_TYPE__LAST, |
| }; |
| |
| /** |
| * ccp_aes_mode - AES operation mode |
| * |
| * @CCP_AES_MODE_ECB: ECB mode |
| * @CCP_AES_MODE_CBC: CBC mode |
| * @CCP_AES_MODE_OFB: OFB mode |
| * @CCP_AES_MODE_CFB: CFB mode |
| * @CCP_AES_MODE_CTR: CTR mode |
| * @CCP_AES_MODE_CMAC: CMAC mode |
| */ |
| enum ccp_aes_mode { |
| CCP_AES_MODE_ECB = 0, |
| CCP_AES_MODE_CBC, |
| CCP_AES_MODE_OFB, |
| CCP_AES_MODE_CFB, |
| CCP_AES_MODE_CTR, |
| CCP_AES_MODE_CMAC, |
| CCP_AES_MODE_GHASH, |
| CCP_AES_MODE_GCTR, |
| CCP_AES_MODE_GCM, |
| CCP_AES_MODE_GMAC, |
| CCP_AES_MODE__LAST, |
| }; |
| |
| /** |
| * ccp_aes_mode - AES operation mode |
| * |
| * @CCP_AES_ACTION_DECRYPT: AES decrypt operation |
| * @CCP_AES_ACTION_ENCRYPT: AES encrypt operation |
| */ |
| enum ccp_aes_action { |
| CCP_AES_ACTION_DECRYPT = 0, |
| CCP_AES_ACTION_ENCRYPT, |
| CCP_AES_ACTION__LAST, |
| }; |
| /* Overloaded field */ |
| #define CCP_AES_GHASHAAD CCP_AES_ACTION_DECRYPT |
| #define CCP_AES_GHASHFINAL CCP_AES_ACTION_ENCRYPT |
| |
| /** |
| * struct ccp_aes_engine - CCP AES operation |
| * @type: AES operation key size |
| * @mode: AES operation mode |
| * @action: AES operation (decrypt/encrypt) |
| * @key: key to be used for this AES operation |
| * @key_len: length in bytes of key |
| * @iv: IV to be used for this AES operation |
| * @iv_len: length in bytes of iv |
| * @src: data to be used for this operation |
| * @dst: data produced by this operation |
| * @src_len: length in bytes of data used for this operation |
| * @cmac_final: indicates final operation when running in CMAC mode |
| * @cmac_key: K1/K2 key used in final CMAC operation |
| * @cmac_key_len: length in bytes of cmac_key |
| * |
| * Variables required to be set when calling ccp_enqueue_cmd(): |
| * - type, mode, action, key, key_len, src, dst, src_len |
| * - iv, iv_len for any mode other than ECB |
| * - cmac_final for CMAC mode |
| * - cmac_key, cmac_key_len for CMAC mode if cmac_final is non-zero |
| * |
| * The iv variable is used as both input and output. On completion of the |
| * AES operation the new IV overwrites the old IV. |
| */ |
| struct ccp_aes_engine { |
| enum ccp_aes_type type; |
| enum ccp_aes_mode mode; |
| enum ccp_aes_action action; |
| |
| struct scatterlist *key; |
| u32 key_len; /* In bytes */ |
| |
| struct scatterlist *iv; |
| u32 iv_len; /* In bytes */ |
| |
| struct scatterlist *src, *dst; |
| u64 src_len; /* In bytes */ |
| |
| u32 cmac_final; /* Indicates final cmac cmd */ |
| struct scatterlist *cmac_key; /* K1/K2 cmac key required for |
| * final cmac cmd */ |
| u32 cmac_key_len; /* In bytes */ |
| |
| u32 aad_len; /* In bytes */ |
| }; |
| |
| /***** XTS-AES engine *****/ |
| /** |
| * ccp_xts_aes_unit_size - XTS unit size |
| * |
| * @CCP_XTS_AES_UNIT_SIZE_16: Unit size of 16 bytes |
| * @CCP_XTS_AES_UNIT_SIZE_512: Unit size of 512 bytes |
| * @CCP_XTS_AES_UNIT_SIZE_1024: Unit size of 1024 bytes |
| * @CCP_XTS_AES_UNIT_SIZE_2048: Unit size of 2048 bytes |
| * @CCP_XTS_AES_UNIT_SIZE_4096: Unit size of 4096 bytes |
| */ |
| enum ccp_xts_aes_unit_size { |
| CCP_XTS_AES_UNIT_SIZE_16 = 0, |
| CCP_XTS_AES_UNIT_SIZE_512, |
| CCP_XTS_AES_UNIT_SIZE_1024, |
| CCP_XTS_AES_UNIT_SIZE_2048, |
| CCP_XTS_AES_UNIT_SIZE_4096, |
| CCP_XTS_AES_UNIT_SIZE__LAST, |
| }; |
| |
| /** |
| * struct ccp_xts_aes_engine - CCP XTS AES operation |
| * @action: AES operation (decrypt/encrypt) |
| * @unit_size: unit size of the XTS operation |
| * @key: key to be used for this XTS AES operation |
| * @key_len: length in bytes of key |
| * @iv: IV to be used for this XTS AES operation |
| * @iv_len: length in bytes of iv |
| * @src: data to be used for this operation |
| * @dst: data produced by this operation |
| * @src_len: length in bytes of data used for this operation |
| * @final: indicates final XTS operation |
| * |
| * Variables required to be set when calling ccp_enqueue_cmd(): |
| * - action, unit_size, key, key_len, iv, iv_len, src, dst, src_len, final |
| * |
| * The iv variable is used as both input and output. On completion of the |
| * AES operation the new IV overwrites the old IV. |
| */ |
| struct ccp_xts_aes_engine { |
| enum ccp_aes_action action; |
| enum ccp_xts_aes_unit_size unit_size; |
| |
| struct scatterlist *key; |
| u32 key_len; /* In bytes */ |
| |
| struct scatterlist *iv; |
| u32 iv_len; /* In bytes */ |
| |
| struct scatterlist *src, *dst; |
| u64 src_len; /* In bytes */ |
| |
| u32 final; |
| }; |
| |
| /***** SHA engine *****/ |
| /** |
| * ccp_sha_type - type of SHA operation |
| * |
| * @CCP_SHA_TYPE_1: SHA-1 operation |
| * @CCP_SHA_TYPE_224: SHA-224 operation |
| * @CCP_SHA_TYPE_256: SHA-256 operation |
| */ |
| enum ccp_sha_type { |
| CCP_SHA_TYPE_1 = 1, |
| CCP_SHA_TYPE_224, |
| CCP_SHA_TYPE_256, |
| CCP_SHA_TYPE_384, |
| CCP_SHA_TYPE_512, |
| CCP_SHA_TYPE__LAST, |
| }; |
| |
| /** |
| * struct ccp_sha_engine - CCP SHA operation |
| * @type: Type of SHA operation |
| * @ctx: current hash value |
| * @ctx_len: length in bytes of hash value |
| * @src: data to be used for this operation |
| * @src_len: length in bytes of data used for this operation |
| * @opad: data to be used for final HMAC operation |
| * @opad_len: length in bytes of data used for final HMAC operation |
| * @first: indicates first SHA operation |
| * @final: indicates final SHA operation |
| * @msg_bits: total length of the message in bits used in final SHA operation |
| * |
| * Variables required to be set when calling ccp_enqueue_cmd(): |
| * - type, ctx, ctx_len, src, src_len, final |
| * - msg_bits if final is non-zero |
| * |
| * The ctx variable is used as both input and output. On completion of the |
| * SHA operation the new hash value overwrites the old hash value. |
| */ |
| struct ccp_sha_engine { |
| enum ccp_sha_type type; |
| |
| struct scatterlist *ctx; |
| u32 ctx_len; /* In bytes */ |
| |
| struct scatterlist *src; |
| u64 src_len; /* In bytes */ |
| |
| struct scatterlist *opad; |
| u32 opad_len; /* In bytes */ |
| |
| u32 first; /* Indicates first sha cmd */ |
| u32 final; /* Indicates final sha cmd */ |
| u64 msg_bits; /* Message length in bits required for |
| * final sha cmd */ |
| }; |
| |
| /***** 3DES engine *****/ |
| enum ccp_des3_mode { |
| CCP_DES3_MODE_ECB = 0, |
| CCP_DES3_MODE_CBC, |
| CCP_DES3_MODE_CFB, |
| CCP_DES3_MODE__LAST, |
| }; |
| |
| enum ccp_des3_type { |
| CCP_DES3_TYPE_168 = 1, |
| CCP_DES3_TYPE__LAST, |
| }; |
| |
| enum ccp_des3_action { |
| CCP_DES3_ACTION_DECRYPT = 0, |
| CCP_DES3_ACTION_ENCRYPT, |
| CCP_DES3_ACTION__LAST, |
| }; |
| |
| /** |
| * struct ccp_des3_engine - CCP SHA operation |
| * @type: Type of 3DES operation |
| * @mode: cipher mode |
| * @action: 3DES operation (decrypt/encrypt) |
| * @key: key to be used for this 3DES operation |
| * @key_len: length of key (in bytes) |
| * @iv: IV to be used for this AES operation |
| * @iv_len: length in bytes of iv |
| * @src: input data to be used for this operation |
| * @src_len: length of input data used for this operation (in bytes) |
| * @dst: output data produced by this operation |
| * |
| * Variables required to be set when calling ccp_enqueue_cmd(): |
| * - type, mode, action, key, key_len, src, dst, src_len |
| * - iv, iv_len for any mode other than ECB |
| * |
| * The iv variable is used as both input and output. On completion of the |
| * 3DES operation the new IV overwrites the old IV. |
| */ |
| struct ccp_des3_engine { |
| enum ccp_des3_type type; |
| enum ccp_des3_mode mode; |
| enum ccp_des3_action action; |
| |
| struct scatterlist *key; |
| u32 key_len; /* In bytes */ |
| |
| struct scatterlist *iv; |
| u32 iv_len; /* In bytes */ |
| |
| struct scatterlist *src, *dst; |
| u64 src_len; /* In bytes */ |
| }; |
| |
| /***** RSA engine *****/ |
| /** |
| * struct ccp_rsa_engine - CCP RSA operation |
| * @key_size: length in bits of RSA key |
| * @exp: RSA exponent |
| * @exp_len: length in bytes of exponent |
| * @mod: RSA modulus |
| * @mod_len: length in bytes of modulus |
| * @src: data to be used for this operation |
| * @dst: data produced by this operation |
| * @src_len: length in bytes of data used for this operation |
| * |
| * Variables required to be set when calling ccp_enqueue_cmd(): |
| * - key_size, exp, exp_len, mod, mod_len, src, dst, src_len |
| */ |
| struct ccp_rsa_engine { |
| u32 key_size; /* In bits */ |
| |
| struct scatterlist *exp; |
| u32 exp_len; /* In bytes */ |
| |
| struct scatterlist *mod; |
| u32 mod_len; /* In bytes */ |
| |
| struct scatterlist *src, *dst; |
| u32 src_len; /* In bytes */ |
| }; |
| |
| /***** Passthru engine *****/ |
| /** |
| * ccp_passthru_bitwise - type of bitwise passthru operation |
| * |
| * @CCP_PASSTHRU_BITWISE_NOOP: no bitwise operation performed |
| * @CCP_PASSTHRU_BITWISE_AND: perform bitwise AND of src with mask |
| * @CCP_PASSTHRU_BITWISE_OR: perform bitwise OR of src with mask |
| * @CCP_PASSTHRU_BITWISE_XOR: perform bitwise XOR of src with mask |
| * @CCP_PASSTHRU_BITWISE_MASK: overwrite with mask |
| */ |
| enum ccp_passthru_bitwise { |
| CCP_PASSTHRU_BITWISE_NOOP = 0, |
| CCP_PASSTHRU_BITWISE_AND, |
| CCP_PASSTHRU_BITWISE_OR, |
| CCP_PASSTHRU_BITWISE_XOR, |
| CCP_PASSTHRU_BITWISE_MASK, |
| CCP_PASSTHRU_BITWISE__LAST, |
| }; |
| |
| /** |
| * ccp_passthru_byteswap - type of byteswap passthru operation |
| * |
| * @CCP_PASSTHRU_BYTESWAP_NOOP: no byte swapping performed |
| * @CCP_PASSTHRU_BYTESWAP_32BIT: swap bytes within 32-bit words |
| * @CCP_PASSTHRU_BYTESWAP_256BIT: swap bytes within 256-bit words |
| */ |
| enum ccp_passthru_byteswap { |
| CCP_PASSTHRU_BYTESWAP_NOOP = 0, |
| CCP_PASSTHRU_BYTESWAP_32BIT, |
| CCP_PASSTHRU_BYTESWAP_256BIT, |
| CCP_PASSTHRU_BYTESWAP__LAST, |
| }; |
| |
| /** |
| * struct ccp_passthru_engine - CCP pass-through operation |
| * @bit_mod: bitwise operation to perform |
| * @byte_swap: byteswap operation to perform |
| * @mask: mask to be applied to data |
| * @mask_len: length in bytes of mask |
| * @src: data to be used for this operation |
| * @dst: data produced by this operation |
| * @src_len: length in bytes of data used for this operation |
| * @final: indicate final pass-through operation |
| * |
| * Variables required to be set when calling ccp_enqueue_cmd(): |
| * - bit_mod, byte_swap, src, dst, src_len |
| * - mask, mask_len if bit_mod is not CCP_PASSTHRU_BITWISE_NOOP |
| */ |
| struct ccp_passthru_engine { |
| enum ccp_passthru_bitwise bit_mod; |
| enum ccp_passthru_byteswap byte_swap; |
| |
| struct scatterlist *mask; |
| u32 mask_len; /* In bytes */ |
| |
| struct scatterlist *src, *dst; |
| u64 src_len; /* In bytes */ |
| |
| u32 final; |
| }; |
| |
| /** |
| * struct ccp_passthru_nomap_engine - CCP pass-through operation |
| * without performing DMA mapping |
| * @bit_mod: bitwise operation to perform |
| * @byte_swap: byteswap operation to perform |
| * @mask: mask to be applied to data |
| * @mask_len: length in bytes of mask |
| * @src: data to be used for this operation |
| * @dst: data produced by this operation |
| * @src_len: length in bytes of data used for this operation |
| * @final: indicate final pass-through operation |
| * |
| * Variables required to be set when calling ccp_enqueue_cmd(): |
| * - bit_mod, byte_swap, src, dst, src_len |
| * - mask, mask_len if bit_mod is not CCP_PASSTHRU_BITWISE_NOOP |
| */ |
| struct ccp_passthru_nomap_engine { |
| enum ccp_passthru_bitwise bit_mod; |
| enum ccp_passthru_byteswap byte_swap; |
| |
| dma_addr_t mask; |
| u32 mask_len; /* In bytes */ |
| |
| dma_addr_t src_dma, dst_dma; |
| u64 src_len; /* In bytes */ |
| |
| u32 final; |
| }; |
| |
| /***** ECC engine *****/ |
| #define CCP_ECC_MODULUS_BYTES 48 /* 384-bits */ |
| #define CCP_ECC_MAX_OPERANDS 6 |
| #define CCP_ECC_MAX_OUTPUTS 3 |
| |
| /** |
| * ccp_ecc_function - type of ECC function |
| * |
| * @CCP_ECC_FUNCTION_MMUL_384BIT: 384-bit modular multiplication |
| * @CCP_ECC_FUNCTION_MADD_384BIT: 384-bit modular addition |
| * @CCP_ECC_FUNCTION_MINV_384BIT: 384-bit multiplicative inverse |
| * @CCP_ECC_FUNCTION_PADD_384BIT: 384-bit point addition |
| * @CCP_ECC_FUNCTION_PMUL_384BIT: 384-bit point multiplication |
| * @CCP_ECC_FUNCTION_PDBL_384BIT: 384-bit point doubling |
| */ |
| enum ccp_ecc_function { |
| CCP_ECC_FUNCTION_MMUL_384BIT = 0, |
| CCP_ECC_FUNCTION_MADD_384BIT, |
| CCP_ECC_FUNCTION_MINV_384BIT, |
| CCP_ECC_FUNCTION_PADD_384BIT, |
| CCP_ECC_FUNCTION_PMUL_384BIT, |
| CCP_ECC_FUNCTION_PDBL_384BIT, |
| }; |
| |
| /** |
| * struct ccp_ecc_modular_math - CCP ECC modular math parameters |
| * @operand_1: first operand for the modular math operation |
| * @operand_1_len: length of the first operand |
| * @operand_2: second operand for the modular math operation |
| * (not used for CCP_ECC_FUNCTION_MINV_384BIT) |
| * @operand_2_len: length of the second operand |
| * (not used for CCP_ECC_FUNCTION_MINV_384BIT) |
| * @result: result of the modular math operation |
| * @result_len: length of the supplied result buffer |
| */ |
| struct ccp_ecc_modular_math { |
| struct scatterlist *operand_1; |
| unsigned int operand_1_len; /* In bytes */ |
| |
| struct scatterlist *operand_2; |
| unsigned int operand_2_len; /* In bytes */ |
| |
| struct scatterlist *result; |
| unsigned int result_len; /* In bytes */ |
| }; |
| |
| /** |
| * struct ccp_ecc_point - CCP ECC point definition |
| * @x: the x coordinate of the ECC point |
| * @x_len: the length of the x coordinate |
| * @y: the y coordinate of the ECC point |
| * @y_len: the length of the y coordinate |
| */ |
| struct ccp_ecc_point { |
| struct scatterlist *x; |
| unsigned int x_len; /* In bytes */ |
| |
| struct scatterlist *y; |
| unsigned int y_len; /* In bytes */ |
| }; |
| |
| /** |
| * struct ccp_ecc_point_math - CCP ECC point math parameters |
| * @point_1: the first point of the ECC point math operation |
| * @point_2: the second point of the ECC point math operation |
| * (only used for CCP_ECC_FUNCTION_PADD_384BIT) |
| * @domain_a: the a parameter of the ECC curve |
| * @domain_a_len: the length of the a parameter |
| * @scalar: the scalar parameter for the point match operation |
| * (only used for CCP_ECC_FUNCTION_PMUL_384BIT) |
| * @scalar_len: the length of the scalar parameter |
| * (only used for CCP_ECC_FUNCTION_PMUL_384BIT) |
| * @result: the point resulting from the point math operation |
| */ |
| struct ccp_ecc_point_math { |
| struct ccp_ecc_point point_1; |
| struct ccp_ecc_point point_2; |
| |
| struct scatterlist *domain_a; |
| unsigned int domain_a_len; /* In bytes */ |
| |
| struct scatterlist *scalar; |
| unsigned int scalar_len; /* In bytes */ |
| |
| struct ccp_ecc_point result; |
| }; |
| |
| /** |
| * struct ccp_ecc_engine - CCP ECC operation |
| * @function: ECC function to perform |
| * @mod: ECC modulus |
| * @mod_len: length in bytes of modulus |
| * @mm: module math parameters |
| * @pm: point math parameters |
| * @ecc_result: result of the ECC operation |
| * |
| * Variables required to be set when calling ccp_enqueue_cmd(): |
| * - function, mod, mod_len |
| * - operand, operand_len, operand_count, output, output_len, output_count |
| * - ecc_result |
| */ |
| struct ccp_ecc_engine { |
| enum ccp_ecc_function function; |
| |
| struct scatterlist *mod; |
| u32 mod_len; /* In bytes */ |
| |
| union { |
| struct ccp_ecc_modular_math mm; |
| struct ccp_ecc_point_math pm; |
| } u; |
| |
| u16 ecc_result; |
| }; |
| |
| |
| /** |
| * ccp_engine - CCP operation identifiers |
| * |
| * @CCP_ENGINE_AES: AES operation |
| * @CCP_ENGINE_XTS_AES: 128-bit XTS AES operation |
| * @CCP_ENGINE_RSVD1: unused |
| * @CCP_ENGINE_SHA: SHA operation |
| * @CCP_ENGINE_RSA: RSA operation |
| * @CCP_ENGINE_PASSTHRU: pass-through operation |
| * @CCP_ENGINE_ZLIB_DECOMPRESS: unused |
| * @CCP_ENGINE_ECC: ECC operation |
| */ |
| enum ccp_engine { |
| CCP_ENGINE_AES = 0, |
| CCP_ENGINE_XTS_AES_128, |
| CCP_ENGINE_DES3, |
| CCP_ENGINE_SHA, |
| CCP_ENGINE_RSA, |
| CCP_ENGINE_PASSTHRU, |
| CCP_ENGINE_ZLIB_DECOMPRESS, |
| CCP_ENGINE_ECC, |
| CCP_ENGINE__LAST, |
| }; |
| |
| /* Flag values for flags member of ccp_cmd */ |
| #define CCP_CMD_MAY_BACKLOG 0x00000001 |
| #define CCP_CMD_PASSTHRU_NO_DMA_MAP 0x00000002 |
| |
| /** |
| * struct ccp_cmd - CCP operation request |
| * @entry: list element (ccp driver use only) |
| * @work: work element used for callbacks (ccp driver use only) |
| * @ccp: CCP device to be run on |
| * @ret: operation return code (ccp driver use only) |
| * @flags: cmd processing flags |
| * @engine: CCP operation to perform |
| * @engine_error: CCP engine return code |
| * @u: engine specific structures, refer to specific engine struct below |
| * @callback: operation completion callback function |
| * @data: parameter value to be supplied to the callback function |
| * |
| * Variables required to be set when calling ccp_enqueue_cmd(): |
| * - engine, callback |
| * - See the operation structures below for what is required for each |
| * operation. |
| */ |
| struct ccp_cmd { |
| /* The list_head, work_struct, ccp and ret variables are for use |
| * by the CCP driver only. |
| */ |
| struct list_head entry; |
| struct work_struct work; |
| struct ccp_device *ccp; |
| int ret; |
| |
| u32 flags; |
| |
| enum ccp_engine engine; |
| u32 engine_error; |
| |
| union { |
| struct ccp_aes_engine aes; |
| struct ccp_xts_aes_engine xts; |
| struct ccp_des3_engine des3; |
| struct ccp_sha_engine sha; |
| struct ccp_rsa_engine rsa; |
| struct ccp_passthru_engine passthru; |
| struct ccp_passthru_nomap_engine passthru_nomap; |
| struct ccp_ecc_engine ecc; |
| } u; |
| |
| /* Completion callback support */ |
| void (*callback)(void *data, int err); |
| void *data; |
| }; |
| |
| #endif |