1 /* 2 * CP Assist for Cryptographic Functions (CPACF) 3 * 4 * Copyright IBM Corp. 2003, 2016 5 * Author(s): Thomas Spatzier 6 * Jan Glauber 7 * Harald Freudenberger (freude@de.ibm.com) 8 * Martin Schwidefsky <schwidefsky@de.ibm.com> 9 */ 10 #ifndef _ASM_S390_CPACF_H 11 #define _ASM_S390_CPACF_H 12 13 #include <asm/facility.h> 14 15 /* 16 * Instruction opcodes for the CPACF instructions 17 */ 18 #define CPACF_KMAC 0xb91e /* MSA */ 19 #define CPACF_KM 0xb92e /* MSA */ 20 #define CPACF_KMC 0xb92f /* MSA */ 21 #define CPACF_KIMD 0xb93e /* MSA */ 22 #define CPACF_KLMD 0xb93f /* MSA */ 23 #define CPACF_PCKMO 0xb928 /* MSA3 */ 24 #define CPACF_KMF 0xb92a /* MSA4 */ 25 #define CPACF_KMO 0xb92b /* MSA4 */ 26 #define CPACF_PCC 0xb92c /* MSA4 */ 27 #define CPACF_KMCTR 0xb92d /* MSA4 */ 28 #define CPACF_PPNO 0xb93c /* MSA5 */ 29 30 /* 31 * Function codes for the KM (CIPHER MESSAGE) 32 * instruction (0x80 is the decipher modifier bit) 33 */ 34 #define CPACF_KM_QUERY 0x00 35 #define CPACF_KM_DEA_ENC 0x01 36 #define CPACF_KM_DEA_DEC 0x81 37 #define CPACF_KM_TDEA_128_ENC 0x02 38 #define CPACF_KM_TDEA_128_DEC 0x82 39 #define CPACF_KM_TDEA_192_ENC 0x03 40 #define CPACF_KM_TDEA_192_DEC 0x83 41 #define CPACF_KM_AES_128_ENC 0x12 42 #define CPACF_KM_AES_128_DEC 0x92 43 #define CPACF_KM_AES_192_ENC 0x13 44 #define CPACF_KM_AES_192_DEC 0x93 45 #define CPACF_KM_AES_256_ENC 0x14 46 #define CPACF_KM_AES_256_DEC 0x94 47 #define CPACF_KM_XTS_128_ENC 0x32 48 #define CPACF_KM_XTS_128_DEC 0xb2 49 #define CPACF_KM_XTS_256_ENC 0x34 50 #define CPACF_KM_XTS_256_DEC 0xb4 51 52 /* 53 * Function codes for the KMC (CIPHER MESSAGE WITH CHAINING) 54 * instruction (0x80 is the decipher modifier bit) 55 */ 56 #define CPACF_KMC_QUERY 0x00 57 #define CPACF_KMC_DEA_ENC 0x01 58 #define CPACF_KMC_DEA_DEC 0x81 59 #define CPACF_KMC_TDEA_128_ENC 0x02 60 #define CPACF_KMC_TDEA_128_DEC 0x82 61 #define CPACF_KMC_TDEA_192_ENC 0x03 62 #define CPACF_KMC_TDEA_192_DEC 0x83 63 #define CPACF_KMC_AES_128_ENC 0x12 64 #define CPACF_KMC_AES_128_DEC 0x92 65 #define CPACF_KMC_AES_192_ENC 0x13 66 #define CPACF_KMC_AES_192_DEC 0x93 67 #define CPACF_KMC_AES_256_ENC 0x14 68 #define CPACF_KMC_AES_256_DEC 0x94 69 #define CPACF_KMC_PRNG 0x43 70 71 /* 72 * Function codes for the KMCTR (CIPHER MESSAGE WITH COUNTER) 73 * instruction (0x80 is the decipher modifier bit) 74 */ 75 #define CPACF_KMCTR_QUERY 0x00 76 #define CPACF_KMCTR_DEA_ENC 0x01 77 #define CPACF_KMCTR_DEA_DEC 0x81 78 #define CPACF_KMCTR_TDEA_128_ENC 0x02 79 #define CPACF_KMCTR_TDEA_128_DEC 0x82 80 #define CPACF_KMCTR_TDEA_192_ENC 0x03 81 #define CPACF_KMCTR_TDEA_192_DEC 0x83 82 #define CPACF_KMCTR_AES_128_ENC 0x12 83 #define CPACF_KMCTR_AES_128_DEC 0x92 84 #define CPACF_KMCTR_AES_192_ENC 0x13 85 #define CPACF_KMCTR_AES_192_DEC 0x93 86 #define CPACF_KMCTR_AES_256_ENC 0x14 87 #define CPACF_KMCTR_AES_256_DEC 0x94 88 89 /* 90 * Function codes for the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) 91 * instruction (0x80 is the decipher modifier bit) 92 */ 93 #define CPACF_KIMD_QUERY 0x00 94 #define CPACF_KIMD_SHA_1 0x01 95 #define CPACF_KIMD_SHA_256 0x02 96 #define CPACF_KIMD_SHA_512 0x03 97 #define CPACF_KIMD_GHASH 0x41 98 99 /* 100 * Function codes for the KLMD (COMPUTE LAST MESSAGE DIGEST) 101 * instruction (0x80 is the decipher modifier bit) 102 */ 103 #define CPACF_KLMD_QUERY 0x00 104 #define CPACF_KLMD_SHA_1 0x01 105 #define CPACF_KLMD_SHA_256 0x02 106 #define CPACF_KLMD_SHA_512 0x03 107 108 /* 109 * function codes for the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) 110 * instruction (0x80 is the decipher modifier bit) 111 */ 112 #define CPACF_KMAC_QUERY 0x00 113 #define CPACF_KMAC_DEA 0x01 114 #define CPACF_KMAC_TDEA_128 0x02 115 #define CPACF_KMAC_TDEA_192 0x03 116 117 /* 118 * Function codes for the PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION) 119 * instruction (0x80 is the decipher modifier bit) 120 */ 121 #define CPACF_PPNO_QUERY 0x00 122 #define CPACF_PPNO_SHA512_DRNG_GEN 0x03 123 #define CPACF_PPNO_SHA512_DRNG_SEED 0x83 124 125 /** 126 * cpacf_query() - check if a specific CPACF function is available 127 * @opcode: the opcode of the crypto instruction 128 * @func: the function code to test for 129 * 130 * Executes the query function for the given crypto instruction @opcode 131 * and checks if @func is available 132 * 133 * Returns 1 if @func is available for @opcode, 0 otherwise 134 */ 135 static inline void __cpacf_query(unsigned int opcode, unsigned char *status) 136 { 137 typedef struct { unsigned char _[16]; } status_type; 138 register unsigned long r0 asm("0") = 0; /* query function */ 139 register unsigned long r1 asm("1") = (unsigned long) status; 140 141 asm volatile( 142 " spm 0\n" /* pckmo doesn't change the cc */ 143 /* Parameter registers are ignored, but may not be 0 */ 144 "0: .insn rrf,%[opc] << 16,2,2,2,0\n" 145 " brc 1,0b\n" /* handle partial completion */ 146 : "=m" (*(status_type *) status) 147 : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (opcode) 148 : "cc"); 149 } 150 151 static inline int cpacf_query(unsigned int opcode, unsigned int func) 152 { 153 unsigned char status[16]; 154 155 switch (opcode) { 156 case CPACF_KMAC: 157 case CPACF_KM: 158 case CPACF_KMC: 159 case CPACF_KIMD: 160 case CPACF_KLMD: 161 if (!test_facility(17)) /* check for MSA */ 162 return 0; 163 break; 164 case CPACF_PCKMO: 165 if (!test_facility(76)) /* check for MSA3 */ 166 return 0; 167 break; 168 case CPACF_KMF: 169 case CPACF_KMO: 170 case CPACF_PCC: 171 case CPACF_KMCTR: 172 if (!test_facility(77)) /* check for MSA4 */ 173 return 0; 174 break; 175 case CPACF_PPNO: 176 if (!test_facility(57)) /* check for MSA5 */ 177 return 0; 178 break; 179 default: 180 BUG(); 181 } 182 __cpacf_query(opcode, status); 183 return (status[func >> 3] & (0x80 >> (func & 7))) != 0; 184 } 185 186 /** 187 * cpacf_km() - executes the KM (CIPHER MESSAGE) instruction 188 * @func: the function code passed to KM; see CPACF_KM_xxx defines 189 * @param: address of parameter block; see POP for details on each func 190 * @dest: address of destination memory area 191 * @src: address of source memory area 192 * @src_len: length of src operand in bytes 193 * 194 * Returns 0 for the query func, number of processed bytes for 195 * encryption/decryption funcs 196 */ 197 static inline int cpacf_km(long func, void *param, 198 u8 *dest, const u8 *src, long src_len) 199 { 200 register unsigned long r0 asm("0") = (unsigned long) func; 201 register unsigned long r1 asm("1") = (unsigned long) param; 202 register unsigned long r2 asm("2") = (unsigned long) src; 203 register unsigned long r3 asm("3") = (unsigned long) src_len; 204 register unsigned long r4 asm("4") = (unsigned long) dest; 205 206 asm volatile( 207 "0: .insn rre,%[opc] << 16,%[dst],%[src]\n" 208 " brc 1,0b\n" /* handle partial completion */ 209 : [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4) 210 : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KM) 211 : "cc", "memory"); 212 213 return src_len - r3; 214 } 215 216 /** 217 * cpacf_kmc() - executes the KMC (CIPHER MESSAGE WITH CHAINING) instruction 218 * @func: the function code passed to KM; see CPACF_KMC_xxx defines 219 * @param: address of parameter block; see POP for details on each func 220 * @dest: address of destination memory area 221 * @src: address of source memory area 222 * @src_len: length of src operand in bytes 223 * 224 * Returns 0 for the query func, number of processed bytes for 225 * encryption/decryption funcs 226 */ 227 static inline int cpacf_kmc(long func, void *param, 228 u8 *dest, const u8 *src, long src_len) 229 { 230 register unsigned long r0 asm("0") = (unsigned long) func; 231 register unsigned long r1 asm("1") = (unsigned long) param; 232 register unsigned long r2 asm("2") = (unsigned long) src; 233 register unsigned long r3 asm("3") = (unsigned long) src_len; 234 register unsigned long r4 asm("4") = (unsigned long) dest; 235 236 asm volatile( 237 "0: .insn rre,%[opc] << 16,%[dst],%[src]\n" 238 " brc 1,0b\n" /* handle partial completion */ 239 : [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4) 240 : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMC) 241 : "cc", "memory"); 242 243 return src_len - r3; 244 } 245 246 /** 247 * cpacf_kimd() - executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) 248 * instruction 249 * @func: the function code passed to KM; see CPACF_KIMD_xxx defines 250 * @param: address of parameter block; see POP for details on each func 251 * @src: address of source memory area 252 * @src_len: length of src operand in bytes 253 * 254 * Returns 0 for the query func, number of processed bytes for digest funcs 255 */ 256 static inline int cpacf_kimd(long func, void *param, 257 const u8 *src, long src_len) 258 { 259 register unsigned long r0 asm("0") = (unsigned long) func; 260 register unsigned long r1 asm("1") = (unsigned long) param; 261 register unsigned long r2 asm("2") = (unsigned long) src; 262 register unsigned long r3 asm("3") = (unsigned long) src_len; 263 264 asm volatile( 265 "0: .insn rre,%[opc] << 16,0,%[src]\n" 266 " brc 1,0b\n" /* handle partial completion */ 267 : [src] "+a" (r2), [len] "+d" (r3) 268 : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KIMD) 269 : "cc", "memory"); 270 271 return src_len - r3; 272 } 273 274 /** 275 * cpacf_klmd() - executes the KLMD (COMPUTE LAST MESSAGE DIGEST) instruction 276 * @func: the function code passed to KM; see CPACF_KLMD_xxx defines 277 * @param: address of parameter block; see POP for details on each func 278 * @src: address of source memory area 279 * @src_len: length of src operand in bytes 280 * 281 * Returns 0 for the query func, number of processed bytes for digest funcs 282 */ 283 static inline int cpacf_klmd(long func, void *param, 284 const u8 *src, long src_len) 285 { 286 register unsigned long r0 asm("0") = (unsigned long) func; 287 register unsigned long r1 asm("1") = (unsigned long) param; 288 register unsigned long r2 asm("2") = (unsigned long) src; 289 register unsigned long r3 asm("3") = (unsigned long) src_len; 290 291 asm volatile( 292 "0: .insn rre,%[opc] << 16,0,%[src]\n" 293 " brc 1,0b\n" /* handle partial completion */ 294 : [src] "+a" (r2), [len] "+d" (r3) 295 : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KLMD) 296 : "cc", "memory"); 297 298 return src_len - r3; 299 } 300 301 /** 302 * cpacf_kmac() - executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) 303 * instruction 304 * @func: the function code passed to KM; see CPACF_KMAC_xxx defines 305 * @param: address of parameter block; see POP for details on each func 306 * @src: address of source memory area 307 * @src_len: length of src operand in bytes 308 * 309 * Returns 0 for the query func, number of processed bytes for digest funcs 310 */ 311 static inline int cpacf_kmac(long func, void *param, 312 const u8 *src, long src_len) 313 { 314 register unsigned long r0 asm("0") = (unsigned long) func; 315 register unsigned long r1 asm("1") = (unsigned long) param; 316 register unsigned long r2 asm("2") = (unsigned long) src; 317 register unsigned long r3 asm("3") = (unsigned long) src_len; 318 319 asm volatile( 320 "0: .insn rre,%[opc] << 16,0,%[src]\n" 321 " brc 1,0b\n" /* handle partial completion */ 322 : [src] "+a" (r2), [len] "+d" (r3) 323 : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMAC) 324 : "cc", "memory"); 325 326 return src_len - r3; 327 } 328 329 /** 330 * cpacf_kmctr() - executes the KMCTR (CIPHER MESSAGE WITH COUNTER) instruction 331 * @func: the function code passed to KMCTR; see CPACF_KMCTR_xxx defines 332 * @param: address of parameter block; see POP for details on each func 333 * @dest: address of destination memory area 334 * @src: address of source memory area 335 * @src_len: length of src operand in bytes 336 * @counter: address of counter value 337 * 338 * Returns 0 for the query func, number of processed bytes for 339 * encryption/decryption funcs 340 */ 341 static inline int cpacf_kmctr(long func, void *param, u8 *dest, 342 const u8 *src, long src_len, u8 *counter) 343 { 344 register unsigned long r0 asm("0") = (unsigned long) func; 345 register unsigned long r1 asm("1") = (unsigned long) param; 346 register unsigned long r2 asm("2") = (unsigned long) src; 347 register unsigned long r3 asm("3") = (unsigned long) src_len; 348 register unsigned long r4 asm("4") = (unsigned long) dest; 349 register unsigned long r6 asm("6") = (unsigned long) counter; 350 351 asm volatile( 352 "0: .insn rrf,%[opc] << 16,%[dst],%[src],%[ctr],0\n" 353 " brc 1,0b\n" /* handle partial completion */ 354 : [src] "+a" (r2), [len] "+d" (r3), 355 [dst] "+a" (r4), [ctr] "+a" (r6) 356 : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMCTR) 357 : "cc", "memory"); 358 359 return src_len - r3; 360 } 361 362 /** 363 * cpacf_ppno() - executes the PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION) 364 * instruction 365 * @func: the function code passed to PPNO; see CPACF_PPNO_xxx defines 366 * @param: address of parameter block; see POP for details on each func 367 * @dest: address of destination memory area 368 * @dest_len: size of destination memory area in bytes 369 * @seed: address of seed data 370 * @seed_len: size of seed data in bytes 371 * 372 * Returns 0 for the query func, number of random bytes stored in 373 * dest buffer for generate function 374 */ 375 static inline int cpacf_ppno(long func, void *param, 376 u8 *dest, long dest_len, 377 const u8 *seed, long seed_len) 378 { 379 register unsigned long r0 asm("0") = (unsigned long) func; 380 register unsigned long r1 asm("1") = (unsigned long) param; 381 register unsigned long r2 asm("2") = (unsigned long) dest; 382 register unsigned long r3 asm("3") = (unsigned long) dest_len; 383 register unsigned long r4 asm("4") = (unsigned long) seed; 384 register unsigned long r5 asm("5") = (unsigned long) seed_len; 385 386 asm volatile ( 387 "0: .insn rre,%[opc] << 16,%[dst],%[seed]\n" 388 " brc 1,0b\n" /* handle partial completion */ 389 : [dst] "+a" (r2), [dlen] "+d" (r3) 390 : [fc] "d" (r0), [pba] "a" (r1), 391 [seed] "a" (r4), [slen] "d" (r5), [opc] "i" (CPACF_PPNO) 392 : "cc", "memory"); 393 394 return dest_len - r3; 395 } 396 397 /** 398 * cpacf_pcc() - executes the PCC (PERFORM CRYPTOGRAPHIC COMPUTATION) 399 * instruction 400 * @func: the function code passed to PCC; see CPACF_KM_xxx defines 401 * @param: address of parameter block; see POP for details on each func 402 * 403 * Returns 0. 404 */ 405 static inline int cpacf_pcc(long func, void *param) 406 { 407 register unsigned long r0 asm("0") = (unsigned long) func; 408 register unsigned long r1 asm("1") = (unsigned long) param; 409 410 asm volatile( 411 "0: .insn rre,%[opc] << 16,0,0\n" /* PCC opcode */ 412 " brc 1,0b\n" /* handle partial completion */ 413 : 414 : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_PCC) 415 : "cc", "memory"); 416 417 return 0; 418 } 419 420 #endif /* _ASM_S390_CPACF_H */ 421