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
162 typedef 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 */
__cpacf_query(unsigned int opcode,cpacf_mask_t * mask)174 static __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
__cpacf_check_opcode(unsigned int opcode)189 static __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
cpacf_query(unsigned int opcode,cpacf_mask_t * mask)214 static __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
cpacf_test_func(cpacf_mask_t * mask,unsigned int func)224 static 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
cpacf_query_func(unsigned int opcode,unsigned int func)229 static __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 */
cpacf_km(unsigned long func,void * param,u8 * dest,const u8 * src,long src_len)249 static 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 */
cpacf_kmc(unsigned long func,void * param,u8 * dest,const u8 * src,long src_len)279 static 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 */
cpacf_kimd(unsigned long func,void * param,const u8 * src,long src_len)306 static 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 */
cpacf_klmd(unsigned long func,void * param,const u8 * src,long src_len)329 static 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 */
cpacf_kmac(unsigned long func,void * param,const u8 * src,long src_len)355 static 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 */
cpacf_kmctr(unsigned long func,void * param,u8 * dest,const u8 * src,long src_len,u8 * counter)385 static 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 */
cpacf_prno(unsigned long func,void * param,u8 * dest,unsigned long dest_len,const u8 * seed,unsigned long seed_len)416 static 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 */
cpacf_trng(u8 * ucbuf,unsigned long ucbuf_len,u8 * cbuf,unsigned long cbuf_len)443 static 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 */
cpacf_pcc(unsigned long func,void * param)467 static 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 */
cpacf_pckmo(long func,void * param)488 static 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 */
cpacf_kma(unsigned long func,void * param,u8 * dest,const u8 * src,unsigned long src_len,const u8 * aad,unsigned long aad_len)511 static 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