LXR linux/arch/s390/include/asm/cpacf.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * CP Assist for Cryptographic Functions (CPACF)
   4 *
   5 * Copyright IBM Corp. 2003, 2017
   6 * Author(s): Thomas Spatzier
   7 *            Jan Glauber
   8 *            Harald Freudenberger (freude@de.ibm.com)
   9 *            Martin Schwidefsky <schwidefsky@de.ibm.com>
  10 */
  11#ifndef _ASM_S390_CPACF_H
  12#define _ASM_S390_CPACF_H
  13
  14#include <asm/facility.h>
  15
  16/*
  17 * Instruction opcodes for the CPACF instructions
  18 */
  19#define CPACF_KMAC              0xb91e          /* MSA  */
  20#define CPACF_KM                0xb92e          /* MSA  */
  21#define CPACF_KMC               0xb92f          /* MSA  */
  22#define CPACF_KIMD              0xb93e          /* MSA  */
  23#define CPACF_KLMD              0xb93f          /* MSA  */
  24#define CPACF_PCKMO             0xb928          /* MSA3 */
  25#define CPACF_KMF               0xb92a          /* MSA4 */
  26#define CPACF_KMO               0xb92b          /* MSA4 */
  27#define CPACF_PCC               0xb92c          /* MSA4 */
  28#define CPACF_KMCTR             0xb92d          /* MSA4 */
  29#define CPACF_PRNO              0xb93c          /* MSA5 */
  30#define CPACF_KMA               0xb929          /* MSA8 */
  31#define CPACF_KDSA              0xb93a          /* MSA9 */
  32
  33/*
  34 * En/decryption modifier bits
  35 */
  36#define CPACF_ENCRYPT           0x00
  37#define CPACF_DECRYPT           0x80
  38
  39/*
  40 * Function codes for the KM (CIPHER MESSAGE) instruction
  41 */
  42#define CPACF_KM_QUERY          0x00
  43#define CPACF_KM_DEA            0x01
  44#define CPACF_KM_TDEA_128       0x02
  45#define CPACF_KM_TDEA_192       0x03
  46#define CPACF_KM_AES_128        0x12
  47#define CPACF_KM_AES_192        0x13
  48#define CPACF_KM_AES_256        0x14
  49#define CPACF_KM_PAES_128       0x1a
  50#define CPACF_KM_PAES_192       0x1b
  51#define CPACF_KM_PAES_256       0x1c
  52#define CPACF_KM_XTS_128        0x32
  53#define CPACF_KM_XTS_256        0x34
  54#define CPACF_KM_PXTS_128       0x3a
  55#define CPACF_KM_PXTS_256       0x3c
  56
  57/*
  58 * Function codes for the KMC (CIPHER MESSAGE WITH CHAINING)
  59 * instruction
  60 */
  61#define CPACF_KMC_QUERY         0x00
  62#define CPACF_KMC_DEA           0x01
  63#define CPACF_KMC_TDEA_128      0x02
  64#define CPACF_KMC_TDEA_192      0x03
  65#define CPACF_KMC_AES_128       0x12
  66#define CPACF_KMC_AES_192       0x13
  67#define CPACF_KMC_AES_256       0x14
  68#define CPACF_KMC_PAES_128      0x1a
  69#define CPACF_KMC_PAES_192      0x1b
  70#define CPACF_KMC_PAES_256      0x1c
  71#define CPACF_KMC_PRNG          0x43
  72
  73/*
  74 * Function codes for the KMCTR (CIPHER MESSAGE WITH COUNTER)
  75 * instruction
  76 */
  77#define CPACF_KMCTR_QUERY       0x00
  78#define CPACF_KMCTR_DEA         0x01
  79#define CPACF_KMCTR_TDEA_128    0x02
  80#define CPACF_KMCTR_TDEA_192    0x03
  81#define CPACF_KMCTR_AES_128     0x12
  82#define CPACF_KMCTR_AES_192     0x13
  83#define CPACF_KMCTR_AES_256     0x14
  84#define CPACF_KMCTR_PAES_128    0x1a
  85#define CPACF_KMCTR_PAES_192    0x1b
  86#define CPACF_KMCTR_PAES_256    0x1c
  87
  88/*
  89 * Function codes for the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST)
  90 * instruction
  91 */
  92#define CPACF_KIMD_QUERY        0x00
  93#define CPACF_KIMD_SHA_1        0x01
  94#define CPACF_KIMD_SHA_256      0x02
  95#define CPACF_KIMD_SHA_512      0x03
  96#define CPACF_KIMD_SHA3_224     0x20
  97#define CPACF_KIMD_SHA3_256     0x21
  98#define CPACF_KIMD_SHA3_384     0x22
  99#define CPACF_KIMD_SHA3_512     0x23
 100#define CPACF_KIMD_GHASH        0x41
 101
 102/*
 103 * Function codes for the KLMD (COMPUTE LAST MESSAGE DIGEST)
 104 * instruction
 105 */
 106#define CPACF_KLMD_QUERY        0x00
 107#define CPACF_KLMD_SHA_1        0x01
 108#define CPACF_KLMD_SHA_256      0x02
 109#define CPACF_KLMD_SHA_512      0x03
 110#define CPACF_KLMD_SHA3_224     0x20
 111#define CPACF_KLMD_SHA3_256     0x21
 112#define CPACF_KLMD_SHA3_384     0x22
 113#define CPACF_KLMD_SHA3_512     0x23
 114
 115/*
 116 * function codes for the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE)
 117 * instruction
 118 */
 119#define CPACF_KMAC_QUERY        0x00
 120#define CPACF_KMAC_DEA          0x01
 121#define CPACF_KMAC_TDEA_128     0x02
 122#define CPACF_KMAC_TDEA_192     0x03
 123
 124/*
 125 * Function codes for the PCKMO (PERFORM CRYPTOGRAPHIC KEY MANAGEMENT)
 126 * instruction
 127 */
 128#define CPACF_PCKMO_QUERY               0x00
 129#define CPACF_PCKMO_ENC_DES_KEY         0x01
 130#define CPACF_PCKMO_ENC_TDES_128_KEY    0x02
 131#define CPACF_PCKMO_ENC_TDES_192_KEY    0x03
 132#define CPACF_PCKMO_ENC_AES_128_KEY     0x12
 133#define CPACF_PCKMO_ENC_AES_192_KEY     0x13
 134#define CPACF_PCKMO_ENC_AES_256_KEY     0x14
 135
 136/*
 137 * Function codes for the PRNO (PERFORM RANDOM NUMBER OPERATION)
 138 * instruction
 139 */
 140#define CPACF_PRNO_QUERY                0x00
 141#define CPACF_PRNO_SHA512_DRNG_GEN      0x03
 142#define CPACF_PRNO_SHA512_DRNG_SEED     0x83
 143#define CPACF_PRNO_TRNG_Q_R2C_RATIO     0x70
 144#define CPACF_PRNO_TRNG                 0x72
 145
 146/*
 147 * Function codes for the KMA (CIPHER MESSAGE WITH AUTHENTICATION)
 148 * instruction
 149 */
 150#define CPACF_KMA_QUERY         0x00
 151#define CPACF_KMA_GCM_AES_128   0x12
 152#define CPACF_KMA_GCM_AES_192   0x13
 153#define CPACF_KMA_GCM_AES_256   0x14
 154
 155/*
 156 * Flags for the KMA (CIPHER MESSAGE WITH AUTHENTICATION) instruction
 157 */
 158#define CPACF_KMA_LPC   0x100   /* Last-Plaintext/Ciphertext */
 159#define CPACF_KMA_LAAD  0x200   /* Last-AAD */
 160#define CPACF_KMA_HS    0x400   /* Hash-subkey Supplied */
 161
 162typedef struct { unsigned char bytes[16]; } cpacf_mask_t;
 163
 164/**
 165 * cpacf_query() - check if a specific CPACF function is available
 166 * @opcode: the opcode of the crypto instruction
 167 * @func: the function code to test for
 168 *
 169 * Executes the query function for the given crypto instruction @opcode
 170 * and checks if @func is available
 171 *
 172 * Returns 1 if @func is available for @opcode, 0 otherwise
 173 */
 174static __always_inline void __cpacf_query(unsigned int opcode, cpacf_mask_t *mask)
 175{
 176        register unsigned long r0 asm("0") = 0; /* query function */
 177        register unsigned long r1 asm("1") = (unsigned long) mask;
 178
 179        asm volatile(
 180                "       spm 0\n" /* pckmo doesn't change the cc */
 181                /* Parameter regs are ignored, but must be nonzero and unique */
 182                "0:     .insn   rrf,%[opc] << 16,2,4,6,0\n"
 183                "       brc     1,0b\n" /* handle partial completion */
 184                : "=m" (*mask)
 185                : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (opcode)
 186                : "cc");
 187}
 188
 189static __always_inline int __cpacf_check_opcode(unsigned int opcode)
 190{
 191        switch (opcode) {
 192        case CPACF_KMAC:
 193        case CPACF_KM:
 194        case CPACF_KMC:
 195        case CPACF_KIMD:
 196        case CPACF_KLMD:
 197                return test_facility(17);       /* check for MSA */
 198        case CPACF_PCKMO:
 199                return test_facility(76);       /* check for MSA3 */
 200        case CPACF_KMF:
 201        case CPACF_KMO:
 202        case CPACF_PCC:
 203        case CPACF_KMCTR:
 204                return test_facility(77);       /* check for MSA4 */
 205        case CPACF_PRNO:
 206                return test_facility(57);       /* check for MSA5 */
 207        case CPACF_KMA:
 208                return test_facility(146);      /* check for MSA8 */
 209        default:
 210                BUG();
 211        }
 212}
 213
 214static __always_inline int cpacf_query(unsigned int opcode, cpacf_mask_t *mask)
 215{
 216        if (__cpacf_check_opcode(opcode)) {
 217                __cpacf_query(opcode, mask);
 218                return 1;
 219        }
 220        memset(mask, 0, sizeof(*mask));
 221        return 0;
 222}
 223
 224static inline int cpacf_test_func(cpacf_mask_t *mask, unsigned int func)
 225{
 226        return (mask->bytes[func >> 3] & (0x80 >> (func & 7))) != 0;
 227}
 228
 229static __always_inline int cpacf_query_func(unsigned int opcode, unsigned int func)
 230{
 231        cpacf_mask_t mask;
 232
 233        if (cpacf_query(opcode, &mask))
 234                return cpacf_test_func(&mask, func);
 235        return 0;
 236}
 237
 238/**
 239 * cpacf_km() - executes the KM (CIPHER MESSAGE) instruction
 240 * @func: the function code passed to KM; see CPACF_KM_xxx defines
 241 * @param: address of parameter block; see POP for details on each func
 242 * @dest: address of destination memory area
 243 * @src: address of source memory area
 244 * @src_len: length of src operand in bytes
 245 *
 246 * Returns 0 for the query func, number of processed bytes for
 247 * encryption/decryption funcs
 248 */
 249static inline int cpacf_km(unsigned long func, void *param,
 250                           u8 *dest, const u8 *src, long src_len)
 251{
 252        register unsigned long r0 asm("0") = (unsigned long) func;
 253        register unsigned long r1 asm("1") = (unsigned long) param;
 254        register unsigned long r2 asm("2") = (unsigned long) src;
 255        register unsigned long r3 asm("3") = (unsigned long) src_len;
 256        register unsigned long r4 asm("4") = (unsigned long) dest;
 257
 258        asm volatile(
 259                "0:     .insn   rre,%[opc] << 16,%[dst],%[src]\n"
 260                "       brc     1,0b\n" /* handle partial completion */
 261                : [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4)
 262                : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KM)
 263                : "cc", "memory");
 264
 265        return src_len - r3;
 266}
 267
 268/**
 269 * cpacf_kmc() - executes the KMC (CIPHER MESSAGE WITH CHAINING) instruction
 270 * @func: the function code passed to KM; see CPACF_KMC_xxx defines
 271 * @param: address of parameter block; see POP for details on each func
 272 * @dest: address of destination memory area
 273 * @src: address of source memory area
 274 * @src_len: length of src operand in bytes
 275 *
 276 * Returns 0 for the query func, number of processed bytes for
 277 * encryption/decryption funcs
 278 */
 279static inline int cpacf_kmc(unsigned long func, void *param,
 280                            u8 *dest, const u8 *src, long src_len)
 281{
 282        register unsigned long r0 asm("0") = (unsigned long) func;
 283        register unsigned long r1 asm("1") = (unsigned long) param;
 284        register unsigned long r2 asm("2") = (unsigned long) src;
 285        register unsigned long r3 asm("3") = (unsigned long) src_len;
 286        register unsigned long r4 asm("4") = (unsigned long) dest;
 287
 288        asm volatile(
 289                "0:     .insn   rre,%[opc] << 16,%[dst],%[src]\n"
 290                "       brc     1,0b\n" /* handle partial completion */
 291                : [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4)
 292                : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMC)
 293                : "cc", "memory");
 294
 295        return src_len - r3;
 296}
 297
 298/**
 299 * cpacf_kimd() - executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST)
 300 *                instruction
 301 * @func: the function code passed to KM; see CPACF_KIMD_xxx defines
 302 * @param: address of parameter block; see POP for details on each func
 303 * @src: address of source memory area
 304 * @src_len: length of src operand in bytes
 305 */
 306static inline void cpacf_kimd(unsigned long func, void *param,
 307                              const u8 *src, long src_len)
 308{
 309        register unsigned long r0 asm("0") = (unsigned long) func;
 310        register unsigned long r1 asm("1") = (unsigned long) param;
 311        register unsigned long r2 asm("2") = (unsigned long) src;
 312        register unsigned long r3 asm("3") = (unsigned long) src_len;
 313
 314        asm volatile(
 315                "0:     .insn   rre,%[opc] << 16,0,%[src]\n"
 316                "       brc     1,0b\n" /* handle partial completion */
 317                : [src] "+a" (r2), [len] "+d" (r3)
 318                : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KIMD)
 319                : "cc", "memory");
 320}
 321
 322/**
 323 * cpacf_klmd() - executes the KLMD (COMPUTE LAST MESSAGE DIGEST) instruction
 324 * @func: the function code passed to KM; see CPACF_KLMD_xxx defines
 325 * @param: address of parameter block; see POP for details on each func
 326 * @src: address of source memory area
 327 * @src_len: length of src operand in bytes
 328 */
 329static inline void cpacf_klmd(unsigned long func, void *param,
 330                              const u8 *src, long src_len)
 331{
 332        register unsigned long r0 asm("0") = (unsigned long) func;
 333        register unsigned long r1 asm("1") = (unsigned long) param;
 334        register unsigned long r2 asm("2") = (unsigned long) src;
 335        register unsigned long r3 asm("3") = (unsigned long) src_len;
 336
 337        asm volatile(
 338                "0:     .insn   rre,%[opc] << 16,0,%[src]\n"
 339                "       brc     1,0b\n" /* handle partial completion */
 340                : [src] "+a" (r2), [len] "+d" (r3)
 341                : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KLMD)
 342                : "cc", "memory");
 343}
 344
 345/**
 346 * cpacf_kmac() - executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE)
 347 *                instruction
 348 * @func: the function code passed to KM; see CPACF_KMAC_xxx defines
 349 * @param: address of parameter block; see POP for details on each func
 350 * @src: address of source memory area
 351 * @src_len: length of src operand in bytes
 352 *
 353 * Returns 0 for the query func, number of processed bytes for digest funcs
 354 */
 355static inline int cpacf_kmac(unsigned long func, void *param,
 356                             const u8 *src, long src_len)
 357{
 358        register unsigned long r0 asm("0") = (unsigned long) func;
 359        register unsigned long r1 asm("1") = (unsigned long) param;
 360        register unsigned long r2 asm("2") = (unsigned long) src;
 361        register unsigned long r3 asm("3") = (unsigned long) src_len;
 362
 363        asm volatile(
 364                "0:     .insn   rre,%[opc] << 16,0,%[src]\n"
 365                "       brc     1,0b\n" /* handle partial completion */
 366                : [src] "+a" (r2), [len] "+d" (r3)
 367                : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMAC)
 368                : "cc", "memory");
 369
 370        return src_len - r3;
 371}
 372
 373/**
 374 * cpacf_kmctr() - executes the KMCTR (CIPHER MESSAGE WITH COUNTER) instruction
 375 * @func: the function code passed to KMCTR; see CPACF_KMCTR_xxx defines
 376 * @param: address of parameter block; see POP for details on each func
 377 * @dest: address of destination memory area
 378 * @src: address of source memory area
 379 * @src_len: length of src operand in bytes
 380 * @counter: address of counter value
 381 *
 382 * Returns 0 for the query func, number of processed bytes for
 383 * encryption/decryption funcs
 384 */
 385static inline int cpacf_kmctr(unsigned long func, void *param, u8 *dest,
 386                              const u8 *src, long src_len, u8 *counter)
 387{
 388        register unsigned long r0 asm("0") = (unsigned long) func;
 389        register unsigned long r1 asm("1") = (unsigned long) param;
 390        register unsigned long r2 asm("2") = (unsigned long) src;
 391        register unsigned long r3 asm("3") = (unsigned long) src_len;
 392        register unsigned long r4 asm("4") = (unsigned long) dest;
 393        register unsigned long r6 asm("6") = (unsigned long) counter;
 394
 395        asm volatile(
 396                "0:     .insn   rrf,%[opc] << 16,%[dst],%[src],%[ctr],0\n"
 397                "       brc     1,0b\n" /* handle partial completion */
 398                : [src] "+a" (r2), [len] "+d" (r3),
 399                  [dst] "+a" (r4), [ctr] "+a" (r6)
 400                : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMCTR)
 401                : "cc", "memory");
 402
 403        return src_len - r3;
 404}
 405
 406/**
 407 * cpacf_prno() - executes the PRNO (PERFORM RANDOM NUMBER OPERATION)
 408 *                instruction
 409 * @func: the function code passed to PRNO; see CPACF_PRNO_xxx defines
 410 * @param: address of parameter block; see POP for details on each func
 411 * @dest: address of destination memory area
 412 * @dest_len: size of destination memory area in bytes
 413 * @seed: address of seed data
 414 * @seed_len: size of seed data in bytes
 415 */
 416static inline void cpacf_prno(unsigned long func, void *param,
 417                              u8 *dest, unsigned long dest_len,
 418                              const u8 *seed, unsigned long seed_len)
 419{
 420        register unsigned long r0 asm("0") = (unsigned long) func;
 421        register unsigned long r1 asm("1") = (unsigned long) param;
 422        register unsigned long r2 asm("2") = (unsigned long) dest;
 423        register unsigned long r3 asm("3") = (unsigned long) dest_len;
 424        register unsigned long r4 asm("4") = (unsigned long) seed;
 425        register unsigned long r5 asm("5") = (unsigned long) seed_len;
 426
 427        asm volatile (
 428                "0:     .insn   rre,%[opc] << 16,%[dst],%[seed]\n"
 429                "       brc     1,0b\n"   /* handle partial completion */
 430                : [dst] "+a" (r2), [dlen] "+d" (r3)
 431                : [fc] "d" (r0), [pba] "a" (r1),
 432                  [seed] "a" (r4), [slen] "d" (r5), [opc] "i" (CPACF_PRNO)
 433                : "cc", "memory");
 434}
 435
 436/**
 437 * cpacf_trng() - executes the TRNG subfunction of the PRNO instruction
 438 * @ucbuf: buffer for unconditioned data
 439 * @ucbuf_len: amount of unconditioned data to fetch in bytes
 440 * @cbuf: buffer for conditioned data
 441 * @cbuf_len: amount of conditioned data to fetch in bytes
 442 */
 443static inline void cpacf_trng(u8 *ucbuf, unsigned long ucbuf_len,
 444                              u8 *cbuf, unsigned long cbuf_len)
 445{
 446        register unsigned long r0 asm("0") = (unsigned long) CPACF_PRNO_TRNG;
 447        register unsigned long r2 asm("2") = (unsigned long) ucbuf;
 448        register unsigned long r3 asm("3") = (unsigned long) ucbuf_len;
 449        register unsigned long r4 asm("4") = (unsigned long) cbuf;
 450        register unsigned long r5 asm("5") = (unsigned long) cbuf_len;
 451
 452        asm volatile (
 453                "0:     .insn   rre,%[opc] << 16,%[ucbuf],%[cbuf]\n"
 454                "       brc     1,0b\n"   /* handle partial completion */
 455                : [ucbuf] "+a" (r2), [ucbuflen] "+d" (r3),
 456                  [cbuf] "+a" (r4), [cbuflen] "+d" (r5)
 457                : [fc] "d" (r0), [opc] "i" (CPACF_PRNO)
 458                : "cc", "memory");
 459}
 460
 461/**
 462 * cpacf_pcc() - executes the PCC (PERFORM CRYPTOGRAPHIC COMPUTATION)
 463 *               instruction
 464 * @func: the function code passed to PCC; see CPACF_KM_xxx defines
 465 * @param: address of parameter block; see POP for details on each func
 466 */
 467static inline void cpacf_pcc(unsigned long func, void *param)
 468{
 469        register unsigned long r0 asm("0") = (unsigned long) func;
 470        register unsigned long r1 asm("1") = (unsigned long) param;
 471
 472        asm volatile(
 473                "0:     .insn   rre,%[opc] << 16,0,0\n" /* PCC opcode */
 474                "       brc     1,0b\n" /* handle partial completion */
 475                :
 476                : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_PCC)
 477                : "cc", "memory");
 478}
 479
 480/**
 481 * cpacf_pckmo() - executes the PCKMO (PERFORM CRYPTOGRAPHIC KEY
 482 *                MANAGEMENT) instruction
 483 * @func: the function code passed to PCKMO; see CPACF_PCKMO_xxx defines
 484 * @param: address of parameter block; see POP for details on each func
 485 *
 486 * Returns 0.
 487 */
 488static inline void cpacf_pckmo(long func, void *param)
 489{
 490        register unsigned long r0 asm("0") = (unsigned long) func;
 491        register unsigned long r1 asm("1") = (unsigned long) param;
 492
 493        asm volatile(
 494                "       .insn   rre,%[opc] << 16,0,0\n" /* PCKMO opcode */
 495                :
 496                : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_PCKMO)
 497                : "cc", "memory");
 498}
 499
 500/**
 501 * cpacf_kma() - executes the KMA (CIPHER MESSAGE WITH AUTHENTICATION)
 502 *               instruction
 503 * @func: the function code passed to KMA; see CPACF_KMA_xxx defines
 504 * @param: address of parameter block; see POP for details on each func
 505 * @dest: address of destination memory area
 506 * @src: address of source memory area
 507 * @src_len: length of src operand in bytes
 508 * @aad: address of additional authenticated data memory area
 509 * @aad_len: length of aad operand in bytes
 510 */
 511static inline void cpacf_kma(unsigned long func, void *param, u8 *dest,
 512                             const u8 *src, unsigned long src_len,
 513                             const u8 *aad, unsigned long aad_len)
 514{
 515        register unsigned long r0 asm("0") = (unsigned long) func;
 516        register unsigned long r1 asm("1") = (unsigned long) param;
 517        register unsigned long r2 asm("2") = (unsigned long) src;
 518        register unsigned long r3 asm("3") = (unsigned long) src_len;
 519        register unsigned long r4 asm("4") = (unsigned long) aad;
 520        register unsigned long r5 asm("5") = (unsigned long) aad_len;
 521        register unsigned long r6 asm("6") = (unsigned long) dest;
 522
 523        asm volatile(
 524                "0:     .insn   rrf,%[opc] << 16,%[dst],%[src],%[aad],0\n"
 525                "       brc     1,0b\n" /* handle partial completion */
 526                : [dst] "+a" (r6), [src] "+a" (r2), [slen] "+d" (r3),
 527                  [aad] "+a" (r4), [alen] "+d" (r5)
 528                : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMA)
 529                : "cc", "memory");
 530}
 531
 532#endif  /* _ASM_S390_CPACF_H */
 533