/* SPDX-License-Identifier: GPL-2.0 */
/*
* CP Assist for Cryptographic Functions ( CPACF )
*
* Copyright IBM Corp . 2003 , 2023
* Author ( s ) : Thomas Spatzier
* Jan Glauber
* Harald Freudenberger ( freude @ de . ibm . com )
* Martin Schwidefsky < schwidefsky @ de . ibm . com >
*/
#ifndef _ASM_S390_CPACF_H
#define _ASM_S390_CPACF_H
#include <asm /facility.h>
#include <linux/kmsan-checks.h>
/*
* Instruction opcodes for the CPACF instructions
*/
#define CPACF_KMAC 0 xb91e /* MSA */
#define CPACF_KM 0 xb92e /* MSA */
#define CPACF_KMC 0 xb92f /* MSA */
#define CPACF_KIMD 0 xb93e /* MSA */
#define CPACF_KLMD 0 xb93f /* MSA */
#define CPACF_PCKMO 0 xb928 /* MSA3 */
#define CPACF_KMF 0 xb92a /* MSA4 */
#define CPACF_KMO 0 xb92b /* MSA4 */
#define CPACF_PCC 0 xb92c /* MSA4 */
#define CPACF_KMCTR 0 xb92d /* MSA4 */
#define CPACF_PRNO 0 xb93c /* MSA5 */
#define CPACF_KMA 0 xb929 /* MSA8 */
#define CPACF_KDSA 0 xb93a /* MSA9 */
/*
* En / decryption modifier bits
*/
#define CPACF_ENCRYPT 0 x00
#define CPACF_DECRYPT 0 x80
/*
* Function codes for the KM ( CIPHER MESSAGE ) instruction
*/
#define CPACF_KM_QUERY 0 x00
#define CPACF_KM_DEA 0 x01
#define CPACF_KM_TDEA_128 0 x02
#define CPACF_KM_TDEA_192 0 x03
#define CPACF_KM_AES_128 0 x12
#define CPACF_KM_AES_192 0 x13
#define CPACF_KM_AES_256 0 x14
#define CPACF_KM_PAES_128 0 x1a
#define CPACF_KM_PAES_192 0 x1b
#define CPACF_KM_PAES_256 0 x1c
#define CPACF_KM_XTS_128 0 x32
#define CPACF_KM_XTS_256 0 x34
#define CPACF_KM_PXTS_128 0 x3a
#define CPACF_KM_PXTS_256 0 x3c
#define CPACF_KM_XTS_128_FULL 0 x52
#define CPACF_KM_XTS_256_FULL 0 x54
#define CPACF_KM_PXTS_128_FULL 0 x5a
#define CPACF_KM_PXTS_256_FULL 0 x5c
/*
* Function codes for the KMC ( CIPHER MESSAGE WITH CHAINING )
* instruction
*/
#define CPACF_KMC_QUERY 0 x00
#define CPACF_KMC_DEA 0 x01
#define CPACF_KMC_TDEA_128 0 x02
#define CPACF_KMC_TDEA_192 0 x03
#define CPACF_KMC_AES_128 0 x12
#define CPACF_KMC_AES_192 0 x13
#define CPACF_KMC_AES_256 0 x14
#define CPACF_KMC_PAES_128 0 x1a
#define CPACF_KMC_PAES_192 0 x1b
#define CPACF_KMC_PAES_256 0 x1c
#define CPACF_KMC_PRNG 0 x43
/*
* Function codes for the KMCTR ( CIPHER MESSAGE WITH COUNTER )
* instruction
*/
#define CPACF_KMCTR_QUERY 0 x00
#define CPACF_KMCTR_DEA 0 x01
#define CPACF_KMCTR_TDEA_128 0 x02
#define CPACF_KMCTR_TDEA_192 0 x03
#define CPACF_KMCTR_AES_128 0 x12
#define CPACF_KMCTR_AES_192 0 x13
#define CPACF_KMCTR_AES_256 0 x14
#define CPACF_KMCTR_PAES_128 0 x1a
#define CPACF_KMCTR_PAES_192 0 x1b
#define CPACF_KMCTR_PAES_256 0 x1c
/*
* Function codes for the KIMD ( COMPUTE INTERMEDIATE MESSAGE DIGEST )
* instruction
*/
#define CPACF_KIMD_QUERY 0 x00
#define CPACF_KIMD_SHA_1 0 x01
#define CPACF_KIMD_SHA_256 0 x02
#define CPACF_KIMD_SHA_512 0 x03
#define CPACF_KIMD_SHA3_224 0 x20
#define CPACF_KIMD_SHA3_256 0 x21
#define CPACF_KIMD_SHA3_384 0 x22
#define CPACF_KIMD_SHA3_512 0 x23
#define CPACF_KIMD_GHASH 0 x41
/*
* Function codes for the KLMD ( COMPUTE LAST MESSAGE DIGEST )
* instruction
*/
#define CPACF_KLMD_QUERY 0 x00
#define CPACF_KLMD_SHA_1 0 x01
#define CPACF_KLMD_SHA_256 0 x02
#define CPACF_KLMD_SHA_512 0 x03
#define CPACF_KLMD_SHA3_224 0 x20
#define CPACF_KLMD_SHA3_256 0 x21
#define CPACF_KLMD_SHA3_384 0 x22
#define CPACF_KLMD_SHA3_512 0 x23
/*
* function codes for the KMAC ( COMPUTE MESSAGE AUTHENTICATION CODE )
* instruction
*/
#define CPACF_KMAC_QUERY 0 x00
#define CPACF_KMAC_DEA 0 x01
#define CPACF_KMAC_TDEA_128 0 x02
#define CPACF_KMAC_TDEA_192 0 x03
#define CPACF_KMAC_HMAC_SHA_224 0 x70
#define CPACF_KMAC_HMAC_SHA_256 0 x71
#define CPACF_KMAC_HMAC_SHA_384 0 x72
#define CPACF_KMAC_HMAC_SHA_512 0 x73
#define CPACF_KMAC_PHMAC_SHA_224 0 x78
#define CPACF_KMAC_PHMAC_SHA_256 0 x79
#define CPACF_KMAC_PHMAC_SHA_384 0 x7a
#define CPACF_KMAC_PHMAC_SHA_512 0 x7b
/*
* Function codes for the PCKMO ( PERFORM CRYPTOGRAPHIC KEY MANAGEMENT )
* instruction
*/
#define CPACF_PCKMO_QUERY 0 x00
#define CPACF_PCKMO_ENC_DES_KEY 0 x01
#define CPACF_PCKMO_ENC_TDES_128_KEY 0 x02
#define CPACF_PCKMO_ENC_TDES_192_KEY 0 x03
#define CPACF_PCKMO_ENC_AES_128_KEY 0 x12
#define CPACF_PCKMO_ENC_AES_192_KEY 0 x13
#define CPACF_PCKMO_ENC_AES_256_KEY 0 x14
#define CPACF_PCKMO_ENC_AES_XTS_128_DOUBLE_KEY 0 x15
#define CPACF_PCKMO_ENC_AES_XTS_256_DOUBLE_KEY 0 x16
#define CPACF_PCKMO_ENC_ECC_P256_KEY 0 x20
#define CPACF_PCKMO_ENC_ECC_P384_KEY 0 x21
#define CPACF_PCKMO_ENC_ECC_P521_KEY 0 x22
#define CPACF_PCKMO_ENC_ECC_ED25519_KEY 0 x28
#define CPACF_PCKMO_ENC_ECC_ED448_KEY 0 x29
#define CPACF_PCKMO_ENC_HMAC_512_KEY 0 x76
#define CPACF_PCKMO_ENC_HMAC_1024_KEY 0 x7a
/*
* Function codes for the PRNO ( PERFORM RANDOM NUMBER OPERATION )
* instruction
*/
#define CPACF_PRNO_QUERY 0 x00
#define CPACF_PRNO_SHA512_DRNG_GEN 0 x03
#define CPACF_PRNO_SHA512_DRNG_SEED 0 x83
#define CPACF_PRNO_TRNG_Q_R2C_RATIO 0 x70
#define CPACF_PRNO_TRNG 0 x72
/*
* Function codes for the KMA ( CIPHER MESSAGE WITH AUTHENTICATION )
* instruction
*/
#define CPACF_KMA_QUERY 0 x00
#define CPACF_KMA_GCM_AES_128 0 x12
#define CPACF_KMA_GCM_AES_192 0 x13
#define CPACF_KMA_GCM_AES_256 0 x14
/*
* Flags for the KMA ( CIPHER MESSAGE WITH AUTHENTICATION ) instruction
*/
#define CPACF_KMA_LPC 0 x100 /* Last-Plaintext/Ciphertext */
#define CPACF_KMA_LAAD 0 x200 /* Last-AAD */
#define CPACF_KMA_HS 0 x400 /* Hash-subkey Supplied */
/*
* Flags for the KIMD / KLMD ( COMPUTE INTERMEDIATE / LAST MESSAGE DIGEST )
* instructions
*/
#define CPACF_KIMD_NIP 0 x8000
#define CPACF_KLMD_DUFOP 0 x4000
#define CPACF_KLMD_NIP 0 x8000
/*
* Function codes for KDSA ( COMPUTE DIGITAL SIGNATURE AUTHENTICATION )
* instruction
*/
#define CPACF_KDSA_QUERY 0 x00
#define CPACF_KDSA_ECDSA_VERIFY_P256 0 x01
#define CPACF_KDSA_ECDSA_VERIFY_P384 0 x02
#define CPACF_KDSA_ECDSA_VERIFY_P521 0 x03
#define CPACF_KDSA_ECDSA_SIGN_P256 0 x09
#define CPACF_KDSA_ECDSA_SIGN_P384 0 x0a
#define CPACF_KDSA_ECDSA_SIGN_P521 0 x0b
#define CPACF_KDSA_ENC_ECDSA_SIGN_P256 0 x11
#define CPACF_KDSA_ENC_ECDSA_SIGN_P384 0 x12
#define CPACF_KDSA_ENC_ECDSA_SIGN_P521 0 x13
#define CPACF_KDSA_EDDSA_VERIFY_ED25519 0 x20
#define CPACF_KDSA_EDDSA_VERIFY_ED448 0 x24
#define CPACF_KDSA_EDDSA_SIGN_ED25519 0 x28
#define CPACF_KDSA_EDDSA_SIGN_ED448 0 x2c
#define CPACF_KDSA_ENC_EDDSA_SIGN_ED25519 0 x30
#define CPACF_KDSA_ENC_EDDSA_SIGN_ED448 0 x34
#define CPACF_FC_QUERY 0 x00
#define CPACF_FC_QUERY_AUTH_INFO 0 x7F
typedef struct { unsigned char bytes[16 ]; } cpacf_mask_t;
typedef struct { unsigned char bytes[256 ]; } cpacf_qai_t;
/*
* Prototype for a not existing function to produce a link
* error if _ _ cpacf_query ( ) or _ _ cpacf_check_opcode ( ) is used
* with an invalid compile time const opcode .
*/
void __cpacf_bad_opcode(void );
static __always_inline void __cpacf_query_rre(u32 opc, u8 r1, u8 r2,
u8 *pb, u8 fc)
{
asm volatile (
" la %%r1,%[pb]\n"
" lghi %%r0,%[fc]\n"
" .insn rre,%[opc] << 16,%[r1],%[r2]\n"
: [pb] "=R" (*pb)
: [opc] "i" (opc), [fc] "i" (fc),
[r1] "i" (r1), [r2] "i" (r2)
: "cc" , "memory" , "r0" , "r1" );
}
static __always_inline void __cpacf_query_rrf(u32 opc, u8 r1, u8 r2, u8 r3,
u8 m4, u8 *pb, u8 fc)
{
asm volatile (
" la %%r1,%[pb]\n"
" lghi %%r0,%[fc]\n"
" .insn rrf,%[opc] << 16,%[r1],%[r2],%[r3],%[m4]\n"
: [pb] "=R" (*pb)
: [opc] "i" (opc), [fc] "i" (fc), [r1] "i" (r1),
[r2] "i" (r2), [r3] "i" (r3), [m4] "i" (m4)
: "cc" , "memory" , "r0" , "r1" );
}
static __always_inline void __cpacf_query_insn(unsigned int opcode, void *pb,
u8 fc)
{
switch (opcode) {
case CPACF_KDSA:
__cpacf_query_rre(CPACF_KDSA, 0 , 2 , pb, fc);
break ;
case CPACF_KIMD:
__cpacf_query_rre(CPACF_KIMD, 0 , 2 , pb, fc);
break ;
case CPACF_KLMD:
__cpacf_query_rre(CPACF_KLMD, 0 , 2 , pb, fc);
break ;
case CPACF_KM:
__cpacf_query_rre(CPACF_KM, 2 , 4 , pb, fc);
break ;
case CPACF_KMA:
__cpacf_query_rrf(CPACF_KMA, 2 , 4 , 6 , 0 , pb, fc);
break ;
case CPACF_KMAC:
__cpacf_query_rre(CPACF_KMAC, 0 , 2 , pb, fc);
break ;
case CPACF_KMC:
__cpacf_query_rre(CPACF_KMC, 2 , 4 , pb, fc);
break ;
case CPACF_KMCTR:
__cpacf_query_rrf(CPACF_KMCTR, 2 , 4 , 6 , 0 , pb, fc);
break ;
case CPACF_KMF:
__cpacf_query_rre(CPACF_KMF, 2 , 4 , pb, fc);
break ;
case CPACF_KMO:
__cpacf_query_rre(CPACF_KMO, 2 , 4 , pb, fc);
break ;
case CPACF_PCC:
__cpacf_query_rre(CPACF_PCC, 0 , 0 , pb, fc);
break ;
case CPACF_PCKMO:
__cpacf_query_rre(CPACF_PCKMO, 0 , 0 , pb, fc);
break ;
case CPACF_PRNO:
__cpacf_query_rre(CPACF_PRNO, 2 , 4 , pb, fc);
break ;
default :
__cpacf_bad_opcode();
}
}
static __always_inline void __cpacf_query(unsigned int opcode,
cpacf_mask_t *mask)
{
__cpacf_query_insn(opcode, mask, CPACF_FC_QUERY);
}
static __always_inline int __cpacf_check_opcode(unsigned int opcode)
{
switch (opcode) {
case CPACF_KMAC:
case CPACF_KM:
case CPACF_KMC:
case CPACF_KIMD:
case CPACF_KLMD:
return test_facility(17 ); /* check for MSA */
case CPACF_PCKMO:
return test_facility(76 ); /* check for MSA3 */
case CPACF_KMF:
case CPACF_KMO:
case CPACF_PCC:
case CPACF_KMCTR:
return test_facility(77 ); /* check for MSA4 */
case CPACF_PRNO:
return test_facility(57 ); /* check for MSA5 */
case CPACF_KMA:
return test_facility(146 ); /* check for MSA8 */
case CPACF_KDSA:
return test_facility(155 ); /* check for MSA9 */
default :
__cpacf_bad_opcode();
return 0 ;
}
}
/**
* cpacf_query ( ) - Query the function code mask for this CPACF opcode
* @ opcode : the opcode of the crypto instruction
* @ mask : ptr to struct cpacf_mask_t
*
* Executes the query function for the given crypto instruction @ opcode
* and checks if @ func is available
*
* On success 1 is returned and the mask is filled with the function
* code mask for this CPACF opcode , otherwise 0 is returned .
*/
static __always_inline int cpacf_query(unsigned int opcode, cpacf_mask_t *mask)
{
if (__cpacf_check_opcode(opcode)) {
__cpacf_query(opcode, mask);
return 1 ;
}
memset(mask, 0 , sizeof (*mask));
return 0 ;
}
static inline int cpacf_test_func(cpacf_mask_t *mask, unsigned int func)
{
return (mask->bytes[func >> 3 ] & (0 x80 >> (func & 7 ))) != 0 ;
}
static __always_inline int cpacf_query_func(unsigned int opcode,
unsigned int func)
{
cpacf_mask_t mask;
if (cpacf_query(opcode, &mask))
return cpacf_test_func(&mask, func);
return 0 ;
}
static __always_inline void __cpacf_qai(unsigned int opcode, cpacf_qai_t *qai)
{
__cpacf_query_insn(opcode, qai, CPACF_FC_QUERY_AUTH_INFO);
}
/**
* cpacf_qai ( ) - Get the query authentication information for a CPACF opcode
* @ opcode : the opcode of the crypto instruction
* @ mask : ptr to struct cpacf_qai_t
*
* Executes the query authentication information function for the given crypto
* instruction @ opcode and checks if @ func is available
*
* On success 1 is returned and the mask is filled with the query authentication
* information for this CPACF opcode , otherwise 0 is returned .
*/
static __always_inline int cpacf_qai(unsigned int opcode, cpacf_qai_t *qai)
{
if (cpacf_query_func(opcode, CPACF_FC_QUERY_AUTH_INFO)) {
__cpacf_qai(opcode, qai);
return 1 ;
}
memset(qai, 0 , sizeof (*qai));
return 0 ;
}
/**
* cpacf_km ( ) - executes the KM ( CIPHER MESSAGE ) instruction
* @ func : the function code passed to KM ; see CPACF_KM_xxx defines
* @ 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
*
* Returns 0 for the query func , number of processed bytes for
* encryption / decryption funcs
*/
static inline int cpacf_km(unsigned long func, void *param,
u8 *dest, const u8 *src, long src_len)
{
union register_pair d, s;
d.even = (unsigned long )dest;
s.even = (unsigned long )src;
s.odd = (unsigned long )src_len;
asm volatile (
" lgr 0,%[fc]\n"
" lgr 1,%[pba]\n"
"0: .insn rre,%[opc] << 16,%[dst],%[src]\n"
" brc 1,0b\n" /* handle partial completion */
: [src] "+&d" (s.pair), [dst] "+&d" (d.pair)
: [fc] "d" (func), [pba] "d" ((unsigned long )param),
[opc] "i" (CPACF_KM)
: "cc" , "memory" , "0" , "1" );
return src_len - s.odd;
}
/**
* cpacf_kmc ( ) - executes the KMC ( CIPHER MESSAGE WITH CHAINING ) instruction
* @ func : the function code passed to KM ; see CPACF_KMC_xxx defines
* @ 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
*
* Returns 0 for the query func , number of processed bytes for
* encryption / decryption funcs
*/
static inline int cpacf_kmc(unsigned long func, void *param,
u8 *dest, const u8 *src, long src_len)
{
union register_pair d, s;
d.even = (unsigned long )dest;
s.even = (unsigned long )src;
s.odd = (unsigned long )src_len;
asm volatile (
" lgr 0,%[fc]\n"
" lgr 1,%[pba]\n"
"0: .insn rre,%[opc] << 16,%[dst],%[src]\n"
" brc 1,0b\n" /* handle partial completion */
: [src] "+&d" (s.pair), [dst] "+&d" (d.pair)
: [fc] "d" (func), [pba] "d" ((unsigned long )param),
[opc] "i" (CPACF_KMC)
: "cc" , "memory" , "0" , "1" );
return src_len - s.odd;
}
/**
* cpacf_kimd ( ) - executes the KIMD ( COMPUTE INTERMEDIATE MESSAGE DIGEST )
* instruction
* @ func : the function code passed to KM ; see CPACF_KIMD_xxx defines
* @ 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
*/
static inline void cpacf_kimd(unsigned long func, void *param,
const u8 *src, long src_len)
{
union register_pair s;
s.even = (unsigned long )src;
s.odd = (unsigned long )src_len;
asm volatile (
" lgr 0,%[fc]\n"
" lgr 1,%[pba]\n"
"0: .insn rrf,%[opc] << 16,0,%[src],8,0\n"
" brc 1,0b\n" /* handle partial completion */
: [src] "+&d" (s.pair)
: [fc] "d" (func), [pba] "d" ((unsigned long )(param)),
[opc] "i" (CPACF_KIMD)
: "cc" , "memory" , "0" , "1" );
}
/**
* cpacf_klmd ( ) - executes the KLMD ( COMPUTE LAST MESSAGE DIGEST ) instruction
* @ func : the function code passed to KM ; see CPACF_KLMD_xxx defines
* @ 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
*/
static inline void cpacf_klmd(unsigned long func, void *param,
const u8 *src, long src_len)
{
union register_pair s;
s.even = (unsigned long )src;
s.odd = (unsigned long )src_len;
asm volatile (
" lgr 0,%[fc]\n"
" lgr 1,%[pba]\n"
"0: .insn rrf,%[opc] << 16,0,%[src],8,0\n"
" brc 1,0b\n" /* handle partial completion */
: [src] "+&d" (s.pair)
: [fc] "d" (func), [pba] "d" ((unsigned long )param),
[opc] "i" (CPACF_KLMD)
: "cc" , "memory" , "0" , "1" );
}
/**
* _ cpacf_kmac ( ) - executes the KMAC ( COMPUTE MESSAGE AUTHENTICATION CODE )
* instruction and updates flags in gr0
* @ gr0 : pointer to gr0 ( fc and flags ) passed to KMAC ; see CPACF_KMAC_xxx defines
* @ 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
*
* Returns 0 for the query func , number of processed bytes for digest funcs
*/
static inline int _cpacf_kmac(unsigned long *gr0, void *param,
const u8 *src, long src_len)
{
union register_pair s;
s.even = (unsigned long )src;
s.odd = (unsigned long )src_len;
asm volatile (
" lgr 0,%[r0]\n"
" lgr 1,%[pba]\n"
"0: .insn rre,%[opc] << 16,0,%[src]\n"
" brc 1,0b\n" /* handle partial completion */
" lgr %[r0],0\n"
: [r0] "+d" (*gr0), [src] "+&d" (s.pair)
: [pba] "d" ((unsigned long )param),
[opc] "i" (CPACF_KMAC)
: "cc" , "memory" , "0" , "1" );
return src_len - s.odd;
}
/**
* cpacf_kmac ( ) - executes the KMAC ( COMPUTE MESSAGE AUTHENTICATION CODE )
* instruction
* @ func : function code passed to KMAC ; see CPACF_KMAC_xxx defines
* @ 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
*
* Returns 0 for the query func , number of processed bytes for digest funcs
*/
static inline int cpacf_kmac(unsigned long func, void *param,
const u8 *src, long src_len)
{
return _cpacf_kmac(&func, param, src, src_len);
}
/**
* cpacf_kmctr ( ) - executes the KMCTR ( CIPHER MESSAGE WITH COUNTER ) instruction
* @ func : the function code passed to KMCTR ; see CPACF_KMCTR_xxx defines
* @ 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
*
* Returns 0 for the query func , number of processed bytes for
* encryption / decryption funcs
*/
static inline int cpacf_kmctr(unsigned long func, void *param, u8 *dest,
const u8 *src, long src_len, u8 *counter)
{
union register_pair d, s, c;
d.even = (unsigned long )dest;
s.even = (unsigned long )src;
s.odd = (unsigned long )src_len;
c.even = (unsigned long )counter;
asm volatile (
" lgr 0,%[fc]\n"
" lgr 1,%[pba]\n"
"0: .insn rrf,%[opc] << 16,%[dst],%[src],%[ctr],0\n"
" brc 1,0b\n" /* handle partial completion */
: [src] "+&d" (s.pair), [dst] "+&d" (d.pair),
[ctr] "+&d" (c.pair)
: [fc] "d" (func), [pba] "d" ((unsigned long )param),
[opc] "i" (CPACF_KMCTR)
: "cc" , "memory" , "0" , "1" );
return src_len - s.odd;
}
/**
* cpacf_prno ( ) - executes the PRNO ( PERFORM RANDOM NUMBER OPERATION )
* instruction
* @ func : the function code passed to PRNO ; see CPACF_PRNO_xxx defines
* @ 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
*/
static inline void cpacf_prno(unsigned long func, void *param,
u8 *dest, unsigned long dest_len,
const u8 *seed, unsigned long seed_len)
{
union register_pair d, s;
d.even = (unsigned long )dest;
d.odd = (unsigned long )dest_len;
s.even = (unsigned long )seed;
s.odd = (unsigned long )seed_len;
asm volatile (
" lgr 0,%[fc]\n"
" lgr 1,%[pba]\n"
"0: .insn rre,%[opc] << 16,%[dst],%[seed]\n"
" brc 1,0b\n" /* handle partial completion */
: [dst] "+&d" (d.pair)
: [fc] "d" (func), [pba] "d" ((unsigned long )param),
[seed] "d" (s.pair), [opc] "i" (CPACF_PRNO)
: "cc" , "memory" , "0" , "1" );
}
/**
* cpacf_trng ( ) - executes the TRNG subfunction of the PRNO instruction
* @ ucbuf : buffer for unconditioned data
* @ ucbuf_len : amount of unconditioned data to fetch in bytes
* @ cbuf : buffer for conditioned data
* @ cbuf_len : amount of conditioned data to fetch in bytes
*/
static inline void cpacf_trng(u8 *ucbuf, unsigned long ucbuf_len,
u8 *cbuf, unsigned long cbuf_len)
{
union register_pair u, c;
u.even = (unsigned long )ucbuf;
u.odd = (unsigned long )ucbuf_len;
c.even = (unsigned long )cbuf;
c.odd = (unsigned long )cbuf_len;
asm volatile (
" lghi 0,%[fc]\n"
"0: .insn rre,%[opc] << 16,%[ucbuf],%[cbuf]\n"
" brc 1,0b\n" /* handle partial completion */
: [ucbuf] "+&d" (u.pair), [cbuf] "+&d" (c.pair)
: [fc] "K" (CPACF_PRNO_TRNG), [opc] "i" (CPACF_PRNO)
: "cc" , "memory" , "0" );
kmsan_unpoison_memory(ucbuf, ucbuf_len);
kmsan_unpoison_memory(cbuf, cbuf_len);
}
/**
* cpacf_pcc ( ) - executes the PCC ( PERFORM CRYPTOGRAPHIC COMPUTATION )
* instruction
* @ func : the function code passed to PCC ; see CPACF_KM_xxx defines
* @ param : address of parameter block ; see POP for details on each func
*
* Returns the condition code , this is
* 0 - cc code 0 ( normal completion )
* 1 - cc code 1 ( protected key wkvp mismatch or src operand out of range )
* 2 - cc code 2 ( something invalid , scalar multiply infinity , . . . )
* Condition code 3 ( partial completion ) is handled within the asm code
* and never returned .
*/
static inline int cpacf_pcc(unsigned long func, void *param)
{
int cc;
asm volatile (
" lgr 0,%[fc]\n"
" lgr 1,%[pba]\n"
"0: .insn rre,%[opc] << 16,0,0\n" /* PCC opcode */
" brc 1,0b\n" /* handle partial completion */
CC_IPM(cc)
: CC_OUT(cc, cc)
: [fc] "d" (func), [pba] "d" ((unsigned long )param),
[opc] "i" (CPACF_PCC)
: CC_CLOBBER_LIST("memory" , "0" , "1" ));
return CC_TRANSFORM(cc);
}
/**
* cpacf_pckmo ( ) - executes the PCKMO ( PERFORM CRYPTOGRAPHIC KEY
* MANAGEMENT ) instruction
* @ func : the function code passed to PCKMO ; see CPACF_PCKMO_xxx defines
* @ param : address of parameter block ; see POP for details on each func
*
* Returns 0 .
*/
static inline void cpacf_pckmo(long func, void *param)
{
asm volatile (
" lgr 0,%[fc]\n"
" lgr 1,%[pba]\n"
" .insn rre,%[opc] << 16,0,0\n" /* PCKMO opcode */
:
: [fc] "d" (func), [pba] "d" ((unsigned long )param),
[opc] "i" (CPACF_PCKMO)
: "cc" , "memory" , "0" , "1" );
}
/**
* cpacf_kma ( ) - executes the KMA ( CIPHER MESSAGE WITH AUTHENTICATION )
* instruction
* @ func : the function code passed to KMA ; see CPACF_KMA_xxx defines
* @ 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
* @ aad : address of additional authenticated data memory area
* @ aad_len : length of aad operand in bytes
*/
static inline void cpacf_kma(unsigned long func, void *param, u8 *dest,
const u8 *src, unsigned long src_len,
const u8 *aad, unsigned long aad_len)
{
union register_pair d, s, a;
d.even = (unsigned long )dest;
s.even = (unsigned long )src;
s.odd = (unsigned long )src_len;
a.even = (unsigned long )aad;
a.odd = (unsigned long )aad_len;
asm volatile (
" lgr 0,%[fc]\n"
" lgr 1,%[pba]\n"
"0: .insn rrf,%[opc] << 16,%[dst],%[src],%[aad],0\n"
" brc 1,0b\n" /* handle partial completion */
: [dst] "+&d" (d.pair), [src] "+&d" (s.pair),
[aad] "+&d" (a.pair)
: [fc] "d" (func), [pba] "d" ((unsigned long )param),
[opc] "i" (CPACF_KMA)
: "cc" , "memory" , "0" , "1" );
}
#endif /* _ASM_S390_CPACF_H */
Messung V0.5 in Prozent C=92 H=92 G=91
¤ Dauer der Verarbeitung: 0.17 Sekunden
(vorverarbeitet am 2026-09-28)
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