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-rw-r--r--arch/s390/crypto/crypt_s390.h122
1 files changed, 91 insertions, 31 deletions
diff --git a/arch/s390/crypto/crypt_s390.h b/arch/s390/crypto/crypt_s390.h
index ba3b2aefddf5..d9c4c313fbc6 100644
--- a/arch/s390/crypto/crypt_s390.h
+++ b/arch/s390/crypto/crypt_s390.h
@@ -3,9 +3,10 @@
3 * 3 *
4 * Support for s390 cryptographic instructions. 4 * Support for s390 cryptographic instructions.
5 * 5 *
6 * Copyright IBM Corp. 2003, 2007 6 * Copyright IBM Corp. 2003, 2015
7 * Author(s): Thomas Spatzier 7 * Author(s): Thomas Spatzier
8 * Jan Glauber (jan.glauber@de.ibm.com) 8 * Jan Glauber (jan.glauber@de.ibm.com)
9 * Harald Freudenberger (freude@de.ibm.com)
9 * 10 *
10 * This program is free software; you can redistribute it and/or modify it 11 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the Free 12 * under the terms of the GNU General Public License as published by the Free
@@ -28,15 +29,17 @@
28#define CRYPT_S390_MSA 0x1 29#define CRYPT_S390_MSA 0x1
29#define CRYPT_S390_MSA3 0x2 30#define CRYPT_S390_MSA3 0x2
30#define CRYPT_S390_MSA4 0x4 31#define CRYPT_S390_MSA4 0x4
32#define CRYPT_S390_MSA5 0x8
31 33
32/* s390 cryptographic operations */ 34/* s390 cryptographic operations */
33enum crypt_s390_operations { 35enum crypt_s390_operations {
34 CRYPT_S390_KM = 0x0100, 36 CRYPT_S390_KM = 0x0100,
35 CRYPT_S390_KMC = 0x0200, 37 CRYPT_S390_KMC = 0x0200,
36 CRYPT_S390_KIMD = 0x0300, 38 CRYPT_S390_KIMD = 0x0300,
37 CRYPT_S390_KLMD = 0x0400, 39 CRYPT_S390_KLMD = 0x0400,
38 CRYPT_S390_KMAC = 0x0500, 40 CRYPT_S390_KMAC = 0x0500,
39 CRYPT_S390_KMCTR = 0x0600 41 CRYPT_S390_KMCTR = 0x0600,
42 CRYPT_S390_PPNO = 0x0700
40}; 43};
41 44
42/* 45/*
@@ -138,6 +141,16 @@ enum crypt_s390_kmac_func {
138 KMAC_TDEA_192 = CRYPT_S390_KMAC | 3 141 KMAC_TDEA_192 = CRYPT_S390_KMAC | 3
139}; 142};
140 143
144/*
145 * function codes for PPNO (PERFORM PSEUDORANDOM NUMBER
146 * OPERATION) instruction
147 */
148enum crypt_s390_ppno_func {
149 PPNO_QUERY = CRYPT_S390_PPNO | 0,
150 PPNO_SHA512_DRNG_GEN = CRYPT_S390_PPNO | 3,
151 PPNO_SHA512_DRNG_SEED = CRYPT_S390_PPNO | 0x83
152};
153
141/** 154/**
142 * crypt_s390_km: 155 * crypt_s390_km:
143 * @func: the function code passed to KM; see crypt_s390_km_func 156 * @func: the function code passed to KM; see crypt_s390_km_func
@@ -162,11 +175,11 @@ static inline int crypt_s390_km(long func, void *param,
162 int ret; 175 int ret;
163 176
164 asm volatile( 177 asm volatile(
165 "0: .insn rre,0xb92e0000,%3,%1 \n" /* KM opcode */ 178 "0: .insn rre,0xb92e0000,%3,%1\n" /* KM opcode */
166 "1: brc 1,0b \n" /* handle partial completion */ 179 "1: brc 1,0b\n" /* handle partial completion */
167 " la %0,0\n" 180 " la %0,0\n"
168 "2:\n" 181 "2:\n"
169 EX_TABLE(0b,2b) EX_TABLE(1b,2b) 182 EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
170 : "=d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest) 183 : "=d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest)
171 : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory"); 184 : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
172 if (ret < 0) 185 if (ret < 0)
@@ -198,11 +211,11 @@ static inline int crypt_s390_kmc(long func, void *param,
198 int ret; 211 int ret;
199 212
200 asm volatile( 213 asm volatile(
201 "0: .insn rre,0xb92f0000,%3,%1 \n" /* KMC opcode */ 214 "0: .insn rre,0xb92f0000,%3,%1\n" /* KMC opcode */
202 "1: brc 1,0b \n" /* handle partial completion */ 215 "1: brc 1,0b\n" /* handle partial completion */
203 " la %0,0\n" 216 " la %0,0\n"
204 "2:\n" 217 "2:\n"
205 EX_TABLE(0b,2b) EX_TABLE(1b,2b) 218 EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
206 : "=d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest) 219 : "=d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest)
207 : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory"); 220 : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
208 if (ret < 0) 221 if (ret < 0)
@@ -233,11 +246,11 @@ static inline int crypt_s390_kimd(long func, void *param,
233 int ret; 246 int ret;
234 247
235 asm volatile( 248 asm volatile(
236 "0: .insn rre,0xb93e0000,%1,%1 \n" /* KIMD opcode */ 249 "0: .insn rre,0xb93e0000,%1,%1\n" /* KIMD opcode */
237 "1: brc 1,0b \n" /* handle partial completion */ 250 "1: brc 1,0b\n" /* handle partial completion */
238 " la %0,0\n" 251 " la %0,0\n"
239 "2:\n" 252 "2:\n"
240 EX_TABLE(0b,2b) EX_TABLE(1b,2b) 253 EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
241 : "=d" (ret), "+a" (__src), "+d" (__src_len) 254 : "=d" (ret), "+a" (__src), "+d" (__src_len)
242 : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory"); 255 : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
243 if (ret < 0) 256 if (ret < 0)
@@ -267,11 +280,11 @@ static inline int crypt_s390_klmd(long func, void *param,
267 int ret; 280 int ret;
268 281
269 asm volatile( 282 asm volatile(
270 "0: .insn rre,0xb93f0000,%1,%1 \n" /* KLMD opcode */ 283 "0: .insn rre,0xb93f0000,%1,%1\n" /* KLMD opcode */
271 "1: brc 1,0b \n" /* handle partial completion */ 284 "1: brc 1,0b\n" /* handle partial completion */
272 " la %0,0\n" 285 " la %0,0\n"
273 "2:\n" 286 "2:\n"
274 EX_TABLE(0b,2b) EX_TABLE(1b,2b) 287 EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
275 : "=d" (ret), "+a" (__src), "+d" (__src_len) 288 : "=d" (ret), "+a" (__src), "+d" (__src_len)
276 : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory"); 289 : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
277 if (ret < 0) 290 if (ret < 0)
@@ -302,11 +315,11 @@ static inline int crypt_s390_kmac(long func, void *param,
302 int ret; 315 int ret;
303 316
304 asm volatile( 317 asm volatile(
305 "0: .insn rre,0xb91e0000,%1,%1 \n" /* KLAC opcode */ 318 "0: .insn rre,0xb91e0000,%1,%1\n" /* KLAC opcode */
306 "1: brc 1,0b \n" /* handle partial completion */ 319 "1: brc 1,0b\n" /* handle partial completion */
307 " la %0,0\n" 320 " la %0,0\n"
308 "2:\n" 321 "2:\n"
309 EX_TABLE(0b,2b) EX_TABLE(1b,2b) 322 EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
310 : "=d" (ret), "+a" (__src), "+d" (__src_len) 323 : "=d" (ret), "+a" (__src), "+d" (__src_len)
311 : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory"); 324 : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
312 if (ret < 0) 325 if (ret < 0)
@@ -340,11 +353,11 @@ static inline int crypt_s390_kmctr(long func, void *param, u8 *dest,
340 int ret = -1; 353 int ret = -1;
341 354
342 asm volatile( 355 asm volatile(
343 "0: .insn rrf,0xb92d0000,%3,%1,%4,0 \n" /* KMCTR opcode */ 356 "0: .insn rrf,0xb92d0000,%3,%1,%4,0\n" /* KMCTR opcode */
344 "1: brc 1,0b \n" /* handle partial completion */ 357 "1: brc 1,0b\n" /* handle partial completion */
345 " la %0,0\n" 358 " la %0,0\n"
346 "2:\n" 359 "2:\n"
347 EX_TABLE(0b,2b) EX_TABLE(1b,2b) 360 EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
348 : "+d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest), 361 : "+d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest),
349 "+a" (__ctr) 362 "+a" (__ctr)
350 : "d" (__func), "a" (__param) : "cc", "memory"); 363 : "d" (__func), "a" (__param) : "cc", "memory");
@@ -354,6 +367,47 @@ static inline int crypt_s390_kmctr(long func, void *param, u8 *dest,
354} 367}
355 368
356/** 369/**
370 * crypt_s390_ppno:
371 * @func: the function code passed to PPNO; see crypt_s390_ppno_func
372 * @param: address of parameter block; see POP for details on each func
373 * @dest: address of destination memory area
374 * @dest_len: size of destination memory area in bytes
375 * @seed: address of seed data
376 * @seed_len: size of seed data in bytes
377 *
378 * Executes the PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION)
379 * operation of the CPU.
380 *
381 * Returns -1 for failure, 0 for the query func, number of random
382 * bytes stored in dest buffer for generate function
383 */
384static inline int crypt_s390_ppno(long func, void *param,
385 u8 *dest, long dest_len,
386 const u8 *seed, long seed_len)
387{
388 register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
389 register void *__param asm("1") = param; /* param block (240 bytes) */
390 register u8 *__dest asm("2") = dest; /* buf for recv random bytes */
391 register long __dest_len asm("3") = dest_len; /* requested random bytes */
392 register const u8 *__seed asm("4") = seed; /* buf with seed data */
393 register long __seed_len asm("5") = seed_len; /* bytes in seed buf */
394 int ret = -1;
395
396 asm volatile (
397 "0: .insn rre,0xb93c0000,%1,%5\n" /* PPNO opcode */
398 "1: brc 1,0b\n" /* handle partial completion */
399 " la %0,0\n"
400 "2:\n"
401 EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
402 : "+d" (ret), "+a"(__dest), "+d"(__dest_len)
403 : "d"(__func), "a"(__param), "a"(__seed), "d"(__seed_len)
404 : "cc", "memory");
405 if (ret < 0)
406 return ret;
407 return (func & CRYPT_S390_FUNC_MASK) ? dest_len - __dest_len : 0;
408}
409
410/**
357 * crypt_s390_func_available: 411 * crypt_s390_func_available:
358 * @func: the function code of the specific function; 0 if op in general 412 * @func: the function code of the specific function; 0 if op in general
359 * 413 *
@@ -373,6 +427,9 @@ static inline int crypt_s390_func_available(int func,
373 return 0; 427 return 0;
374 if (facility_mask & CRYPT_S390_MSA4 && !test_facility(77)) 428 if (facility_mask & CRYPT_S390_MSA4 && !test_facility(77))
375 return 0; 429 return 0;
430 if (facility_mask & CRYPT_S390_MSA5 && !test_facility(57))
431 return 0;
432
376 switch (func & CRYPT_S390_OP_MASK) { 433 switch (func & CRYPT_S390_OP_MASK) {
377 case CRYPT_S390_KM: 434 case CRYPT_S390_KM:
378 ret = crypt_s390_km(KM_QUERY, &status, NULL, NULL, 0); 435 ret = crypt_s390_km(KM_QUERY, &status, NULL, NULL, 0);
@@ -390,8 +447,12 @@ static inline int crypt_s390_func_available(int func,
390 ret = crypt_s390_kmac(KMAC_QUERY, &status, NULL, 0); 447 ret = crypt_s390_kmac(KMAC_QUERY, &status, NULL, 0);
391 break; 448 break;
392 case CRYPT_S390_KMCTR: 449 case CRYPT_S390_KMCTR:
393 ret = crypt_s390_kmctr(KMCTR_QUERY, &status, NULL, NULL, 0, 450 ret = crypt_s390_kmctr(KMCTR_QUERY, &status,
394 NULL); 451 NULL, NULL, 0, NULL);
452 break;
453 case CRYPT_S390_PPNO:
454 ret = crypt_s390_ppno(PPNO_QUERY, &status,
455 NULL, 0, NULL, 0);
395 break; 456 break;
396 default: 457 default:
397 return 0; 458 return 0;
@@ -419,15 +480,14 @@ static inline int crypt_s390_pcc(long func, void *param)
419 int ret = -1; 480 int ret = -1;
420 481
421 asm volatile( 482 asm volatile(
422 "0: .insn rre,0xb92c0000,0,0 \n" /* PCC opcode */ 483 "0: .insn rre,0xb92c0000,0,0\n" /* PCC opcode */
423 "1: brc 1,0b \n" /* handle partial completion */ 484 "1: brc 1,0b\n" /* handle partial completion */
424 " la %0,0\n" 485 " la %0,0\n"
425 "2:\n" 486 "2:\n"
426 EX_TABLE(0b,2b) EX_TABLE(1b,2b) 487 EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
427 : "+d" (ret) 488 : "+d" (ret)
428 : "d" (__func), "a" (__param) : "cc", "memory"); 489 : "d" (__func), "a" (__param) : "cc", "memory");
429 return ret; 490 return ret;
430} 491}
431 492
432
433#endif /* _CRYPTO_ARCH_S390_CRYPT_S390_H */ 493#endif /* _CRYPTO_ARCH_S390_CRYPT_S390_H */
generated by cgit v1.2.2 (git 2.25.0) at 2026-01-06 21:44:27 -0500