324 lines
9.8 KiB
C
324 lines
9.8 KiB
C
/*
|
|
* Cryptographic API.
|
|
*
|
|
* Support for s390 cryptographic instructions.
|
|
*
|
|
* Copyright IBM Corp. 2003,2007
|
|
* Author(s): Thomas Spatzier
|
|
* Jan Glauber (jan.glauber@de.ibm.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the Free
|
|
* Software Foundation; either version 2 of the License, or (at your option)
|
|
* any later version.
|
|
*
|
|
*/
|
|
#ifndef _CRYPTO_ARCH_S390_CRYPT_S390_H
|
|
#define _CRYPTO_ARCH_S390_CRYPT_S390_H
|
|
|
|
#include <asm/errno.h>
|
|
|
|
#define CRYPT_S390_OP_MASK 0xFF00
|
|
#define CRYPT_S390_FUNC_MASK 0x00FF
|
|
|
|
#define CRYPT_S390_PRIORITY 300
|
|
#define CRYPT_S390_COMPOSITE_PRIORITY 400
|
|
|
|
/* s930 cryptographic operations */
|
|
enum crypt_s390_operations {
|
|
CRYPT_S390_KM = 0x0100,
|
|
CRYPT_S390_KMC = 0x0200,
|
|
CRYPT_S390_KIMD = 0x0300,
|
|
CRYPT_S390_KLMD = 0x0400,
|
|
CRYPT_S390_KMAC = 0x0500
|
|
};
|
|
|
|
/*
|
|
* function codes for KM (CIPHER MESSAGE) instruction
|
|
* 0x80 is the decipher modifier bit
|
|
*/
|
|
enum crypt_s390_km_func {
|
|
KM_QUERY = CRYPT_S390_KM | 0x0,
|
|
KM_DEA_ENCRYPT = CRYPT_S390_KM | 0x1,
|
|
KM_DEA_DECRYPT = CRYPT_S390_KM | 0x1 | 0x80,
|
|
KM_TDEA_128_ENCRYPT = CRYPT_S390_KM | 0x2,
|
|
KM_TDEA_128_DECRYPT = CRYPT_S390_KM | 0x2 | 0x80,
|
|
KM_TDEA_192_ENCRYPT = CRYPT_S390_KM | 0x3,
|
|
KM_TDEA_192_DECRYPT = CRYPT_S390_KM | 0x3 | 0x80,
|
|
KM_AES_128_ENCRYPT = CRYPT_S390_KM | 0x12,
|
|
KM_AES_128_DECRYPT = CRYPT_S390_KM | 0x12 | 0x80,
|
|
KM_AES_192_ENCRYPT = CRYPT_S390_KM | 0x13,
|
|
KM_AES_192_DECRYPT = CRYPT_S390_KM | 0x13 | 0x80,
|
|
KM_AES_256_ENCRYPT = CRYPT_S390_KM | 0x14,
|
|
KM_AES_256_DECRYPT = CRYPT_S390_KM | 0x14 | 0x80,
|
|
};
|
|
|
|
/*
|
|
* function codes for KMC (CIPHER MESSAGE WITH CHAINING)
|
|
* instruction
|
|
*/
|
|
enum crypt_s390_kmc_func {
|
|
KMC_QUERY = CRYPT_S390_KMC | 0x0,
|
|
KMC_DEA_ENCRYPT = CRYPT_S390_KMC | 0x1,
|
|
KMC_DEA_DECRYPT = CRYPT_S390_KMC | 0x1 | 0x80,
|
|
KMC_TDEA_128_ENCRYPT = CRYPT_S390_KMC | 0x2,
|
|
KMC_TDEA_128_DECRYPT = CRYPT_S390_KMC | 0x2 | 0x80,
|
|
KMC_TDEA_192_ENCRYPT = CRYPT_S390_KMC | 0x3,
|
|
KMC_TDEA_192_DECRYPT = CRYPT_S390_KMC | 0x3 | 0x80,
|
|
KMC_AES_128_ENCRYPT = CRYPT_S390_KMC | 0x12,
|
|
KMC_AES_128_DECRYPT = CRYPT_S390_KMC | 0x12 | 0x80,
|
|
KMC_AES_192_ENCRYPT = CRYPT_S390_KMC | 0x13,
|
|
KMC_AES_192_DECRYPT = CRYPT_S390_KMC | 0x13 | 0x80,
|
|
KMC_AES_256_ENCRYPT = CRYPT_S390_KMC | 0x14,
|
|
KMC_AES_256_DECRYPT = CRYPT_S390_KMC | 0x14 | 0x80,
|
|
KMC_PRNG = CRYPT_S390_KMC | 0x43,
|
|
};
|
|
|
|
/*
|
|
* function codes for KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST)
|
|
* instruction
|
|
*/
|
|
enum crypt_s390_kimd_func {
|
|
KIMD_QUERY = CRYPT_S390_KIMD | 0,
|
|
KIMD_SHA_1 = CRYPT_S390_KIMD | 1,
|
|
KIMD_SHA_256 = CRYPT_S390_KIMD | 2,
|
|
};
|
|
|
|
/*
|
|
* function codes for KLMD (COMPUTE LAST MESSAGE DIGEST)
|
|
* instruction
|
|
*/
|
|
enum crypt_s390_klmd_func {
|
|
KLMD_QUERY = CRYPT_S390_KLMD | 0,
|
|
KLMD_SHA_1 = CRYPT_S390_KLMD | 1,
|
|
KLMD_SHA_256 = CRYPT_S390_KLMD | 2,
|
|
};
|
|
|
|
/*
|
|
* function codes for KMAC (COMPUTE MESSAGE AUTHENTICATION CODE)
|
|
* instruction
|
|
*/
|
|
enum crypt_s390_kmac_func {
|
|
KMAC_QUERY = CRYPT_S390_KMAC | 0,
|
|
KMAC_DEA = CRYPT_S390_KMAC | 1,
|
|
KMAC_TDEA_128 = CRYPT_S390_KMAC | 2,
|
|
KMAC_TDEA_192 = CRYPT_S390_KMAC | 3
|
|
};
|
|
|
|
/**
|
|
* crypt_s390_km:
|
|
* @func: the function code passed to KM; see crypt_s390_km_func
|
|
* @param: address of parameter block; see POP for details on each func
|
|
* @dest: address of destination memory area
|
|
* @src: address of source memory area
|
|
* @src_len: length of src operand in bytes
|
|
*
|
|
* Executes the KM (CIPHER MESSAGE) operation of the CPU.
|
|
*
|
|
* Returns -1 for failure, 0 for the query func, number of processed
|
|
* bytes for encryption/decryption funcs
|
|
*/
|
|
static inline int crypt_s390_km(long func, void *param,
|
|
u8 *dest, const u8 *src, long src_len)
|
|
{
|
|
register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
|
|
register void *__param asm("1") = param;
|
|
register const u8 *__src asm("2") = src;
|
|
register long __src_len asm("3") = src_len;
|
|
register u8 *__dest asm("4") = dest;
|
|
int ret;
|
|
|
|
asm volatile(
|
|
"0: .insn rre,0xb92e0000,%3,%1 \n" /* KM opcode */
|
|
"1: brc 1,0b \n" /* handle partial completion */
|
|
" la %0,0\n"
|
|
"2:\n"
|
|
EX_TABLE(0b,2b) EX_TABLE(1b,2b)
|
|
: "=d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest)
|
|
: "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
|
|
if (ret < 0)
|
|
return ret;
|
|
return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
|
|
}
|
|
|
|
/**
|
|
* crypt_s390_kmc:
|
|
* @func: the function code passed to KM; see crypt_s390_kmc_func
|
|
* @param: address of parameter block; see POP for details on each func
|
|
* @dest: address of destination memory area
|
|
* @src: address of source memory area
|
|
* @src_len: length of src operand in bytes
|
|
*
|
|
* Executes the KMC (CIPHER MESSAGE WITH CHAINING) operation of the CPU.
|
|
*
|
|
* Returns -1 for failure, 0 for the query func, number of processed
|
|
* bytes for encryption/decryption funcs
|
|
*/
|
|
static inline int crypt_s390_kmc(long func, void *param,
|
|
u8 *dest, const u8 *src, long src_len)
|
|
{
|
|
register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
|
|
register void *__param asm("1") = param;
|
|
register const u8 *__src asm("2") = src;
|
|
register long __src_len asm("3") = src_len;
|
|
register u8 *__dest asm("4") = dest;
|
|
int ret;
|
|
|
|
asm volatile(
|
|
"0: .insn rre,0xb92f0000,%3,%1 \n" /* KMC opcode */
|
|
"1: brc 1,0b \n" /* handle partial completion */
|
|
" la %0,0\n"
|
|
"2:\n"
|
|
EX_TABLE(0b,2b) EX_TABLE(1b,2b)
|
|
: "=d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest)
|
|
: "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
|
|
if (ret < 0)
|
|
return ret;
|
|
return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
|
|
}
|
|
|
|
/**
|
|
* crypt_s390_kimd:
|
|
* @func: the function code passed to KM; see crypt_s390_kimd_func
|
|
* @param: address of parameter block; see POP for details on each func
|
|
* @src: address of source memory area
|
|
* @src_len: length of src operand in bytes
|
|
*
|
|
* Executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) operation
|
|
* of the CPU.
|
|
*
|
|
* Returns -1 for failure, 0 for the query func, number of processed
|
|
* bytes for digest funcs
|
|
*/
|
|
static inline int crypt_s390_kimd(long func, void *param,
|
|
const u8 *src, long src_len)
|
|
{
|
|
register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
|
|
register void *__param asm("1") = param;
|
|
register const u8 *__src asm("2") = src;
|
|
register long __src_len asm("3") = src_len;
|
|
int ret;
|
|
|
|
asm volatile(
|
|
"0: .insn rre,0xb93e0000,%1,%1 \n" /* KIMD opcode */
|
|
"1: brc 1,0b \n" /* handle partial completion */
|
|
" la %0,0\n"
|
|
"2:\n"
|
|
EX_TABLE(0b,2b) EX_TABLE(1b,2b)
|
|
: "=d" (ret), "+a" (__src), "+d" (__src_len)
|
|
: "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
|
|
if (ret < 0)
|
|
return ret;
|
|
return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
|
|
}
|
|
|
|
/**
|
|
* crypt_s390_klmd:
|
|
* @func: the function code passed to KM; see crypt_s390_klmd_func
|
|
* @param: address of parameter block; see POP for details on each func
|
|
* @src: address of source memory area
|
|
* @src_len: length of src operand in bytes
|
|
*
|
|
* Executes the KLMD (COMPUTE LAST MESSAGE DIGEST) operation of the CPU.
|
|
*
|
|
* Returns -1 for failure, 0 for the query func, number of processed
|
|
* bytes for digest funcs
|
|
*/
|
|
static inline int crypt_s390_klmd(long func, void *param,
|
|
const u8 *src, long src_len)
|
|
{
|
|
register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
|
|
register void *__param asm("1") = param;
|
|
register const u8 *__src asm("2") = src;
|
|
register long __src_len asm("3") = src_len;
|
|
int ret;
|
|
|
|
asm volatile(
|
|
"0: .insn rre,0xb93f0000,%1,%1 \n" /* KLMD opcode */
|
|
"1: brc 1,0b \n" /* handle partial completion */
|
|
" la %0,0\n"
|
|
"2:\n"
|
|
EX_TABLE(0b,2b) EX_TABLE(1b,2b)
|
|
: "=d" (ret), "+a" (__src), "+d" (__src_len)
|
|
: "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
|
|
if (ret < 0)
|
|
return ret;
|
|
return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
|
|
}
|
|
|
|
/**
|
|
* crypt_s390_kmac:
|
|
* @func: the function code passed to KM; see crypt_s390_klmd_func
|
|
* @param: address of parameter block; see POP for details on each func
|
|
* @src: address of source memory area
|
|
* @src_len: length of src operand in bytes
|
|
*
|
|
* Executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) operation
|
|
* of the CPU.
|
|
*
|
|
* Returns -1 for failure, 0 for the query func, number of processed
|
|
* bytes for digest funcs
|
|
*/
|
|
static inline int crypt_s390_kmac(long func, void *param,
|
|
const u8 *src, long src_len)
|
|
{
|
|
register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
|
|
register void *__param asm("1") = param;
|
|
register const u8 *__src asm("2") = src;
|
|
register long __src_len asm("3") = src_len;
|
|
int ret;
|
|
|
|
asm volatile(
|
|
"0: .insn rre,0xb91e0000,%1,%1 \n" /* KLAC opcode */
|
|
"1: brc 1,0b \n" /* handle partial completion */
|
|
" la %0,0\n"
|
|
"2:\n"
|
|
EX_TABLE(0b,2b) EX_TABLE(1b,2b)
|
|
: "=d" (ret), "+a" (__src), "+d" (__src_len)
|
|
: "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
|
|
if (ret < 0)
|
|
return ret;
|
|
return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
|
|
}
|
|
|
|
/**
|
|
* crypt_s390_func_available:
|
|
* @func: the function code of the specific function; 0 if op in general
|
|
*
|
|
* Tests if a specific crypto function is implemented on the machine.
|
|
*
|
|
* Returns 1 if func available; 0 if func or op in general not available
|
|
*/
|
|
static inline int crypt_s390_func_available(int func)
|
|
{
|
|
unsigned char status[16];
|
|
int ret;
|
|
|
|
switch (func & CRYPT_S390_OP_MASK) {
|
|
case CRYPT_S390_KM:
|
|
ret = crypt_s390_km(KM_QUERY, &status, NULL, NULL, 0);
|
|
break;
|
|
case CRYPT_S390_KMC:
|
|
ret = crypt_s390_kmc(KMC_QUERY, &status, NULL, NULL, 0);
|
|
break;
|
|
case CRYPT_S390_KIMD:
|
|
ret = crypt_s390_kimd(KIMD_QUERY, &status, NULL, 0);
|
|
break;
|
|
case CRYPT_S390_KLMD:
|
|
ret = crypt_s390_klmd(KLMD_QUERY, &status, NULL, 0);
|
|
break;
|
|
case CRYPT_S390_KMAC:
|
|
ret = crypt_s390_kmac(KMAC_QUERY, &status, NULL, 0);
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
if (ret < 0)
|
|
return 0;
|
|
func &= CRYPT_S390_FUNC_MASK;
|
|
func &= 0x7f; /* mask modifier bit */
|
|
return (status[func >> 3] & (0x80 >> (func & 7))) != 0;
|
|
}
|
|
|
|
#endif /* _CRYPTO_ARCH_S390_CRYPT_S390_H */
|