/* 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 ([email protected])
* Martin Schwidefsky <[email protected]>
*/
#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 0xb91e /* MSA */
#define CPACF_KM 0xb92e /* MSA */
#define CPACF_KMC 0xb92f /* MSA */
#define CPACF_KIMD 0xb93e /* MSA */
#define CPACF_KLMD 0xb93f /* MSA */
#define CPACF_PCKMO 0xb928 /* MSA3 */
#define CPACF_KMF 0xb92a /* MSA4 */
#define CPACF_KMO 0xb92b /* MSA4 */
#define CPACF_PCC 0xb92c /* MSA4 */
#define CPACF_KMCTR 0xb92d /* MSA4 */
#define CPACF_PRNO 0xb93c /* MSA5 */
#define CPACF_KMA 0xb929 /* MSA8 */
#define CPACF_KDSA 0xb93a /* MSA9 */
/*
* En/decryption modifier bits
*/
#define CPACF_ENCRYPT 0x00
#define CPACF_DECRYPT 0x80
/*
* Function codes for the KM (CIPHER MESSAGE) instruction
*/
#define CPACF_KM_QUERY 0x00
#define CPACF_KM_DEA 0x01
#define CPACF_KM_TDEA_128 0x02
#define CPACF_KM_TDEA_192 0x03
#define CPACF_KM_AES_128 0x12
#define CPACF_KM_AES_192 0x13
#define CPACF_KM_AES_256 0x14
#define CPACF_KM_PAES_128 0x1a
#define CPACF_KM_PAES_192 0x1b
#define CPACF_KM_PAES_256 0x1c
#define CPACF_KM_XTS_128 0x32
#define CPACF_KM_XTS_256 0x34
#define CPACF_KM_PXTS_128 0x3a
#define CPACF_KM_PXTS_256 0x3c
#define CPACF_KM_XTS_128_FULL 0x52
#define CPACF_KM_XTS_256_FULL 0x54
/*
* Function codes for the KMC (CIPHER MESSAGE WITH CHAINING)
* instruction
*/
#define CPACF_KMC_QUERY 0x00
#define CPACF_KMC_DEA 0x01
#define CPACF_KMC_TDEA_128 0x02
#define CPACF_KMC_TDEA_192 0x03
#define CPACF_KMC_AES_128 0x12
#define CPACF_KMC_AES_192 0x13
#define CPACF_KMC_AES_256 0x14
#define CPACF_KMC_PAES_128 0x1a
#define CPACF_KMC_PAES_192 0x1b
#define CPACF_KMC_PAES_256 0x1c
#define CPACF_KMC_PRNG 0x43
/*
* Function codes for the KMCTR (CIPHER MESSAGE WITH COUNTER)
* instruction
*/
#define CPACF_KMCTR_QUERY 0x00
#define CPACF_KMCTR_DEA 0x01
#define CPACF_KMCTR_TDEA_128 0x02
#define CPACF_KMCTR_TDEA_192 0x03
#define CPACF_KMCTR_AES_128 0x12
#define CPACF_KMCTR_AES_192 0x13
#define CPACF_KMCTR_AES_256 0x14
#define CPACF_KMCTR_PAES_128 0x1a
#define CPACF_KMCTR_PAES_192 0x1b
#define CPACF_KMCTR_PAES_256 0x1c
/*
* Function codes for the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST)
* instruction
*/
#define CPACF_KIMD_QUERY 0x00
#define CPACF_KIMD_SHA_1 0x01
#define CPACF_KIMD_SHA_256 0x02
#define CPACF_KIMD_SHA_512 0x03
#define CPACF_KIMD_SHA3_224 0x20
#define CPACF_KIMD_SHA3_256 0x21
#define CPACF_KIMD_SHA3_384 0x22
#define CPACF_KIMD_SHA3_512 0x23
#define CPACF_KIMD_GHASH 0x41
/*
* Function codes for the KLMD (COMPUTE LAST MESSAGE DIGEST)
* instruction
*/
#define CPACF_KLMD_QUERY 0x00
#define CPACF_KLMD_SHA_1 0x01
#define CPACF_KLMD_SHA_256 0x02
#define CPACF_KLMD_SHA_512 0x03
#define CPACF_KLMD_SHA3_224 0x20
#define CPACF_KLMD_SHA3_256 0x21
#define CPACF_KLMD_SHA3_384 0x22
#define CPACF_KLMD_SHA3_512 0x23
/*
* function codes for the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE)
* instruction
*/
#define CPACF_KMAC_QUERY 0x00
#define CPACF_KMAC_DEA 0x01
#define CPACF_KMAC_TDEA_128 0x02
#define CPACF_KMAC_TDEA_192 0x03
#define CPACF_KMAC_HMAC_SHA_224 0x70
#define CPACF_KMAC_HMAC_SHA_256 0x71
#define CPACF_KMAC_HMAC_SHA_384 0x72
#define CPACF_KMAC_HMAC_SHA_512 0x73
/*
* Function codes for the PCKMO (PERFORM CRYPTOGRAPHIC KEY MANAGEMENT)
* instruction
*/
#define CPACF_PCKMO_QUERY 0x00
#define CPACF_PCKMO_ENC_DES_KEY 0x01
#define CPACF_PCKMO_ENC_TDES_128_KEY 0x02
#define CPACF_PCKMO_ENC_TDES_192_KEY 0x03
#define CPACF_PCKMO_ENC_AES_128_KEY 0x12
#define CPACF_PCKMO_ENC_AES_192_KEY 0x13
#define CPACF_PCKMO_ENC_AES_256_KEY 0x14
#define CPACF_PCKMO_ENC_AES_XTS_128_DOUBLE_KEY 0x15
#define CPACF_PCKMO_ENC_AES_XTS_256_DOUBLE_KEY 0x16
#define CPACF_PCKMO_ENC_ECC_P256_KEY 0x20
#define CPACF_PCKMO_ENC_ECC_P384_KEY 0x21
#define CPACF_PCKMO_ENC_ECC_P521_KEY 0x22
#define CPACF_PCKMO_ENC_ECC_ED25519_KEY 0x28
#define CPACF_PCKMO_ENC_ECC_ED448_KEY 0x29
#define CPACF_PCKMO_ENC_HMAC_512_KEY 0x76
#define CPACF_PCKMO_ENC_HMAC_1024_KEY 0x7a
/*
* Function codes for the PRNO (PERFORM RANDOM NUMBER OPERATION)
* instruction
*/
#define CPACF_PRNO_QUERY 0x00
#define CPACF_PRNO_SHA512_DRNG_GEN 0x03
#define CPACF_PRNO_SHA512_DRNG_SEED 0x83
#define CPACF_PRNO_TRNG_Q_R2C_RATIO 0x70
#define CPACF_PRNO_TRNG 0x72
/*
* Function codes for the KMA (CIPHER MESSAGE WITH AUTHENTICATION)
* instruction
*/
#define CPACF_KMA_QUERY 0x00
#define CPACF_KMA_GCM_AES_128 0x12
#define CPACF_KMA_GCM_AES_192 0x13
#define CPACF_KMA_GCM_AES_256 0x14
/*
* Flags for the KMA (CIPHER MESSAGE WITH AUTHENTICATION) instruction
*/
#define CPACF_KMA_LPC 0x100 /* Last-Plaintext/Ciphertext */
#define CPACF_KMA_LAAD 0x200 /* Last-AAD */
#define CPACF_KMA_HS 0x400 /* Hash-subkey Supplied */
/*
* Flags for the KIMD/KLMD (COMPUTE INTERMEDIATE/LAST MESSAGE DIGEST)
* instructions
*/
#define CPACF_KIMD_NIP 0x8000
#define CPACF_KLMD_DUFOP 0x4000
#define CPACF_KLMD_NIP 0x8000
/*
* Function codes for KDSA (COMPUTE DIGITAL SIGNATURE AUTHENTICATION)
* instruction
*/
#define CPACF_KDSA_QUERY 0x00
#define CPACF_KDSA_ECDSA_VERIFY_P256 0x01
#define CPACF_KDSA_ECDSA_VERIFY_P384 0x02
#define CPACF_KDSA_ECDSA_VERIFY_P521 0x03
#define CPACF_KDSA_ECDSA_SIGN_P256 0x09
#define CPACF_KDSA_ECDSA_SIGN_P384 0x0a
#define CPACF_KDSA_ECDSA_SIGN_P521 0x0b
#define CPACF_KDSA_ENC_ECDSA_SIGN_P256 0x11
#define CPACF_KDSA_ENC_ECDSA_SIGN_P384 0x12
#define CPACF_KDSA_ENC_ECDSA_SIGN_P521 0x13
#define CPACF_KDSA_EDDSA_VERIFY_ED25519 0x20
#define CPACF_KDSA_EDDSA_VERIFY_ED448 0x24
#define CPACF_KDSA_EDDSA_SIGN_ED25519 0x28
#define CPACF_KDSA_EDDSA_SIGN_ED448 0x2c
#define CPACF_KDSA_ENC_EDDSA_SIGN_ED25519 0x30
#define CPACF_KDSA_ENC_EDDSA_SIGN_ED448 0x34
#define CPACF_FC_QUERY 0x00
#define CPACF_FC_QUERY_AUTH_INFO 0x7F
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] & (0x80 >> (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
*/
static inline void cpacf_pcc(unsigned long func, void *param)
{
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 */
:
: [fc] "d" (func), [pba] "d" ((unsigned long)param),
[opc] "i" (CPACF_PCC)
: "cc", "memory", "0", "1");
}
/**
* 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 */
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