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-rw-r--r--arch/s390/crypto/crypt_s390.h493
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diff --git a/arch/s390/crypto/crypt_s390.h b/arch/s390/crypto/crypt_s390.h
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-/*
- * Cryptographic API.
- *
- * Support for s390 cryptographic instructions.
- *
- * Copyright IBM Corp. 2003, 2015
- * Author(s): Thomas Spatzier
- * Jan Glauber (jan.glauber@de.ibm.com)
- * Harald Freudenberger (freude@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>
-#include <asm/facility.h>
-
-#define CRYPT_S390_OP_MASK 0xFF00
-#define CRYPT_S390_FUNC_MASK 0x00FF
-
-#define CRYPT_S390_PRIORITY 300
-#define CRYPT_S390_COMPOSITE_PRIORITY 400
-
-#define CRYPT_S390_MSA 0x1
-#define CRYPT_S390_MSA3 0x2
-#define CRYPT_S390_MSA4 0x4
-#define CRYPT_S390_MSA5 0x8
-
-/* s390 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,
- CRYPT_S390_KMCTR = 0x0600,
- CRYPT_S390_PPNO = 0x0700
-};
-
-/*
- * 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,
- KM_XTS_128_ENCRYPT = CRYPT_S390_KM | 0x32,
- KM_XTS_128_DECRYPT = CRYPT_S390_KM | 0x32 | 0x80,
- KM_XTS_256_ENCRYPT = CRYPT_S390_KM | 0x34,
- KM_XTS_256_DECRYPT = CRYPT_S390_KM | 0x34 | 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 KMCTR (CIPHER MESSAGE WITH COUNTER)
- * instruction
- */
-enum crypt_s390_kmctr_func {
- KMCTR_QUERY = CRYPT_S390_KMCTR | 0x0,
- KMCTR_DEA_ENCRYPT = CRYPT_S390_KMCTR | 0x1,
- KMCTR_DEA_DECRYPT = CRYPT_S390_KMCTR | 0x1 | 0x80,
- KMCTR_TDEA_128_ENCRYPT = CRYPT_S390_KMCTR | 0x2,
- KMCTR_TDEA_128_DECRYPT = CRYPT_S390_KMCTR | 0x2 | 0x80,
- KMCTR_TDEA_192_ENCRYPT = CRYPT_S390_KMCTR | 0x3,
- KMCTR_TDEA_192_DECRYPT = CRYPT_S390_KMCTR | 0x3 | 0x80,
- KMCTR_AES_128_ENCRYPT = CRYPT_S390_KMCTR | 0x12,
- KMCTR_AES_128_DECRYPT = CRYPT_S390_KMCTR | 0x12 | 0x80,
- KMCTR_AES_192_ENCRYPT = CRYPT_S390_KMCTR | 0x13,
- KMCTR_AES_192_DECRYPT = CRYPT_S390_KMCTR | 0x13 | 0x80,
- KMCTR_AES_256_ENCRYPT = CRYPT_S390_KMCTR | 0x14,
- KMCTR_AES_256_DECRYPT = CRYPT_S390_KMCTR | 0x14 | 0x80,
-};
-
-/*
- * 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,
- KIMD_SHA_512 = CRYPT_S390_KIMD | 3,
- KIMD_GHASH = CRYPT_S390_KIMD | 65,
-};
-
-/*
- * 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,
- KLMD_SHA_512 = CRYPT_S390_KLMD | 3,
-};
-
-/*
- * 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
-};
-
-/*
- * function codes for PPNO (PERFORM PSEUDORANDOM NUMBER
- * OPERATION) instruction
- */
-enum crypt_s390_ppno_func {
- PPNO_QUERY = CRYPT_S390_PPNO | 0,
- PPNO_SHA512_DRNG_GEN = CRYPT_S390_PPNO | 3,
- PPNO_SHA512_DRNG_SEED = CRYPT_S390_PPNO | 0x83
-};
-
-/**
- * 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_kmctr:
- * @func: the function code passed to KMCTR; see crypt_s390_kmctr_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
- * @counter: address of counter value
- *
- * Executes the KMCTR (CIPHER MESSAGE WITH COUNTER) 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_kmctr(long func, void *param, u8 *dest,
- const u8 *src, long src_len, u8 *counter)
-{
- 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;
- register u8 *__ctr asm("6") = counter;
- int ret = -1;
-
- asm volatile(
- "0: .insn rrf,0xb92d0000,%3,%1,%4,0\n" /* KMCTR 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),
- "+a" (__ctr)
- : "d" (__func), "a" (__param) : "cc", "memory");
- if (ret < 0)
- return ret;
- return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
-}
-
-/**
- * crypt_s390_ppno:
- * @func: the function code passed to PPNO; see crypt_s390_ppno_func
- * @param: address of parameter block; see POP for details on each func
- * @dest: address of destination memory area
- * @dest_len: size of destination memory area in bytes
- * @seed: address of seed data
- * @seed_len: size of seed data in bytes
- *
- * Executes the PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION)
- * operation of the CPU.
- *
- * Returns -1 for failure, 0 for the query func, number of random
- * bytes stored in dest buffer for generate function
- */
-static inline int crypt_s390_ppno(long func, void *param,
- u8 *dest, long dest_len,
- const u8 *seed, long seed_len)
-{
- register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
- register void *__param asm("1") = param; /* param block (240 bytes) */
- register u8 *__dest asm("2") = dest; /* buf for recv random bytes */
- register long __dest_len asm("3") = dest_len; /* requested random bytes */
- register const u8 *__seed asm("4") = seed; /* buf with seed data */
- register long __seed_len asm("5") = seed_len; /* bytes in seed buf */
- int ret = -1;
-
- asm volatile (
- "0: .insn rre,0xb93c0000,%1,%5\n" /* PPNO 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"(__dest), "+d"(__dest_len)
- : "d"(__func), "a"(__param), "a"(__seed), "d"(__seed_len)
- : "cc", "memory");
- if (ret < 0)
- return ret;
- return (func & CRYPT_S390_FUNC_MASK) ? dest_len - __dest_len : 0;
-}
-
-/**
- * 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 int facility_mask)
-{
- unsigned char status[16];
- int ret;
-
- if (facility_mask & CRYPT_S390_MSA && !test_facility(17))
- return 0;
- if (facility_mask & CRYPT_S390_MSA3 && !test_facility(76))
- return 0;
- if (facility_mask & CRYPT_S390_MSA4 && !test_facility(77))
- return 0;
- if (facility_mask & CRYPT_S390_MSA5 && !test_facility(57))
- return 0;
-
- 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;
- case CRYPT_S390_KMCTR:
- ret = crypt_s390_kmctr(KMCTR_QUERY, &status,
- NULL, NULL, 0, NULL);
- break;
- case CRYPT_S390_PPNO:
- ret = crypt_s390_ppno(PPNO_QUERY, &status,
- NULL, 0, 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;
-}
-
-/**
- * crypt_s390_pcc:
- * @func: the function code passed to KM; see crypt_s390_km_func
- * @param: address of parameter block; see POP for details on each func
- *
- * Executes the PCC (PERFORM CRYPTOGRAPHIC COMPUTATION) operation of the CPU.
- *
- * Returns -1 for failure, 0 for success.
- */
-static inline int crypt_s390_pcc(long func, void *param)
-{
- register long __func asm("0") = func & 0x7f; /* encrypt or decrypt */
- register void *__param asm("1") = param;
- int ret = -1;
-
- asm volatile(
- "0: .insn rre,0xb92c0000,0,0\n" /* PCC 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)
- : "d" (__func), "a" (__param) : "cc", "memory");
- return ret;
-}
-
-#endif /* _CRYPTO_ARCH_S390_CRYPT_S390_H */
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