Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 | /* * Cryptographic API. * * Support for s390 cryptographic instructions. * * Copyright IBM Corp. 2003,2007 * Author(s): Thomas Spatzier * Jan Glauber (jan.glauber@de.ibm.com) * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. * */ #ifndef _CRYPTO_ARCH_S390_CRYPT_S390_H #define _CRYPTO_ARCH_S390_CRYPT_S390_H #include <asm/errno.h> #define CRYPT_S390_OP_MASK 0xFF00 #define CRYPT_S390_FUNC_MASK 0x00FF #define CRYPT_S390_PRIORITY 300 #define CRYPT_S390_COMPOSITE_PRIORITY 400 /* s390 cryptographic operations */ enum crypt_s390_operations { CRYPT_S390_KM = 0x0100, CRYPT_S390_KMC = 0x0200, CRYPT_S390_KIMD = 0x0300, CRYPT_S390_KLMD = 0x0400, CRYPT_S390_KMAC = 0x0500 }; /* * function codes for KM (CIPHER MESSAGE) instruction * 0x80 is the decipher modifier bit */ enum crypt_s390_km_func { KM_QUERY = CRYPT_S390_KM | 0x0, KM_DEA_ENCRYPT = CRYPT_S390_KM | 0x1, KM_DEA_DECRYPT = CRYPT_S390_KM | 0x1 | 0x80, KM_TDEA_128_ENCRYPT = CRYPT_S390_KM | 0x2, KM_TDEA_128_DECRYPT = CRYPT_S390_KM | 0x2 | 0x80, KM_TDEA_192_ENCRYPT = CRYPT_S390_KM | 0x3, KM_TDEA_192_DECRYPT = CRYPT_S390_KM | 0x3 | 0x80, KM_AES_128_ENCRYPT = CRYPT_S390_KM | 0x12, KM_AES_128_DECRYPT = CRYPT_S390_KM | 0x12 | 0x80, KM_AES_192_ENCRYPT = CRYPT_S390_KM | 0x13, KM_AES_192_DECRYPT = CRYPT_S390_KM | 0x13 | 0x80, KM_AES_256_ENCRYPT = CRYPT_S390_KM | 0x14, KM_AES_256_DECRYPT = CRYPT_S390_KM | 0x14 | 0x80, }; /* * function codes for KMC (CIPHER MESSAGE WITH CHAINING) * instruction */ enum crypt_s390_kmc_func { KMC_QUERY = CRYPT_S390_KMC | 0x0, KMC_DEA_ENCRYPT = CRYPT_S390_KMC | 0x1, KMC_DEA_DECRYPT = CRYPT_S390_KMC | 0x1 | 0x80, KMC_TDEA_128_ENCRYPT = CRYPT_S390_KMC | 0x2, KMC_TDEA_128_DECRYPT = CRYPT_S390_KMC | 0x2 | 0x80, KMC_TDEA_192_ENCRYPT = CRYPT_S390_KMC | 0x3, KMC_TDEA_192_DECRYPT = CRYPT_S390_KMC | 0x3 | 0x80, KMC_AES_128_ENCRYPT = CRYPT_S390_KMC | 0x12, KMC_AES_128_DECRYPT = CRYPT_S390_KMC | 0x12 | 0x80, KMC_AES_192_ENCRYPT = CRYPT_S390_KMC | 0x13, KMC_AES_192_DECRYPT = CRYPT_S390_KMC | 0x13 | 0x80, KMC_AES_256_ENCRYPT = CRYPT_S390_KMC | 0x14, KMC_AES_256_DECRYPT = CRYPT_S390_KMC | 0x14 | 0x80, KMC_PRNG = CRYPT_S390_KMC | 0x43, }; /* * function codes for KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) * instruction */ enum crypt_s390_kimd_func { KIMD_QUERY = CRYPT_S390_KIMD | 0, KIMD_SHA_1 = CRYPT_S390_KIMD | 1, KIMD_SHA_256 = CRYPT_S390_KIMD | 2, KIMD_SHA_512 = CRYPT_S390_KIMD | 3, }; /* * function codes for KLMD (COMPUTE LAST MESSAGE DIGEST) * instruction */ enum crypt_s390_klmd_func { KLMD_QUERY = CRYPT_S390_KLMD | 0, KLMD_SHA_1 = CRYPT_S390_KLMD | 1, KLMD_SHA_256 = CRYPT_S390_KLMD | 2, KLMD_SHA_512 = CRYPT_S390_KLMD | 3, }; /* * function codes for KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) * instruction */ enum crypt_s390_kmac_func { KMAC_QUERY = CRYPT_S390_KMAC | 0, KMAC_DEA = CRYPT_S390_KMAC | 1, KMAC_TDEA_128 = CRYPT_S390_KMAC | 2, KMAC_TDEA_192 = CRYPT_S390_KMAC | 3 }; /** * crypt_s390_km: * @func: the function code passed to KM; see crypt_s390_km_func * @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 * * Executes the KM (CIPHER MESSAGE) operation of the CPU. * * Returns -1 for failure, 0 for the query func, number of processed * bytes for encryption/decryption funcs */ static inline int crypt_s390_km(long func, void *param, u8 *dest, const u8 *src, long src_len) { register long __func asm("0") = func & CRYPT_S390_FUNC_MASK; register void *__param asm("1") = param; register const u8 *__src asm("2") = src; register long __src_len asm("3") = src_len; register u8 *__dest asm("4") = dest; int ret; asm volatile( "0: .insn rre,0xb92e0000,%3,%1 \n" /* KM opcode */ "1: brc 1,0b \n" /* handle partial completion */ " la %0,0\n" "2:\n" EX_TABLE(0b,2b) EX_TABLE(1b,2b) : "=d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest) : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory"); if (ret < 0) return ret; return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len; } /** * crypt_s390_kmc: * @func: the function code passed to KM; see crypt_s390_kmc_func * @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 * * Executes the KMC (CIPHER MESSAGE WITH CHAINING) operation of the CPU. * * Returns -1 for failure, 0 for the query func, number of processed * bytes for encryption/decryption funcs */ static inline int crypt_s390_kmc(long func, void *param, u8 *dest, const u8 *src, long src_len) { register long __func asm("0") = func & CRYPT_S390_FUNC_MASK; register void *__param asm("1") = param; register const u8 *__src asm("2") = src; register long __src_len asm("3") = src_len; register u8 *__dest asm("4") = dest; int ret; asm volatile( "0: .insn rre,0xb92f0000,%3,%1 \n" /* KMC opcode */ "1: brc 1,0b \n" /* handle partial completion */ " la %0,0\n" "2:\n" EX_TABLE(0b,2b) EX_TABLE(1b,2b) : "=d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest) : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory"); if (ret < 0) return ret; return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len; } /** * crypt_s390_kimd: * @func: the function code passed to KM; see crypt_s390_kimd_func * @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 * * Executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) operation * of the CPU. * * Returns -1 for failure, 0 for the query func, number of processed * bytes for digest funcs */ static inline int crypt_s390_kimd(long func, void *param, const u8 *src, long src_len) { register long __func asm("0") = func & CRYPT_S390_FUNC_MASK; register void *__param asm("1") = param; register const u8 *__src asm("2") = src; register long __src_len asm("3") = src_len; int ret; asm volatile( "0: .insn rre,0xb93e0000,%1,%1 \n" /* KIMD opcode */ "1: brc 1,0b \n" /* handle partial completion */ " la %0,0\n" "2:\n" EX_TABLE(0b,2b) EX_TABLE(1b,2b) : "=d" (ret), "+a" (__src), "+d" (__src_len) : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory"); if (ret < 0) return ret; return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len; } /** * crypt_s390_klmd: * @func: the function code passed to KM; see crypt_s390_klmd_func * @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 * * Executes the KLMD (COMPUTE LAST MESSAGE DIGEST) operation of the CPU. * * Returns -1 for failure, 0 for the query func, number of processed * bytes for digest funcs */ static inline int crypt_s390_klmd(long func, void *param, const u8 *src, long src_len) { register long __func asm("0") = func & CRYPT_S390_FUNC_MASK; register void *__param asm("1") = param; register const u8 *__src asm("2") = src; register long __src_len asm("3") = src_len; int ret; asm volatile( "0: .insn rre,0xb93f0000,%1,%1 \n" /* KLMD opcode */ "1: brc 1,0b \n" /* handle partial completion */ " la %0,0\n" "2:\n" EX_TABLE(0b,2b) EX_TABLE(1b,2b) : "=d" (ret), "+a" (__src), "+d" (__src_len) : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory"); if (ret < 0) return ret; return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len; } /** * crypt_s390_kmac: * @func: the function code passed to KM; see crypt_s390_klmd_func * @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 * * Executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) operation * of the CPU. * * Returns -1 for failure, 0 for the query func, number of processed * bytes for digest funcs */ static inline int crypt_s390_kmac(long func, void *param, const u8 *src, long src_len) { register long __func asm("0") = func & CRYPT_S390_FUNC_MASK; register void *__param asm("1") = param; register const u8 *__src asm("2") = src; register long __src_len asm("3") = src_len; int ret; asm volatile( "0: .insn rre,0xb91e0000,%1,%1 \n" /* KLAC opcode */ "1: brc 1,0b \n" /* handle partial completion */ " la %0,0\n" "2:\n" EX_TABLE(0b,2b) EX_TABLE(1b,2b) : "=d" (ret), "+a" (__src), "+d" (__src_len) : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory"); if (ret < 0) return ret; return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len; } /** * crypt_s390_func_available: * @func: the function code of the specific function; 0 if op in general * * Tests if a specific crypto function is implemented on the machine. * * Returns 1 if func available; 0 if func or op in general not available */ static inline int crypt_s390_func_available(int func) { unsigned char status[16]; int ret; /* check if CPACF facility (bit 17) is available */ if (!(stfl() & 1ULL << (31 - 17))) return 0; switch (func & CRYPT_S390_OP_MASK) { case CRYPT_S390_KM: ret = crypt_s390_km(KM_QUERY, &status, NULL, NULL, 0); break; case CRYPT_S390_KMC: ret = crypt_s390_kmc(KMC_QUERY, &status, NULL, NULL, 0); break; case CRYPT_S390_KIMD: ret = crypt_s390_kimd(KIMD_QUERY, &status, NULL, 0); break; case CRYPT_S390_KLMD: ret = crypt_s390_klmd(KLMD_QUERY, &status, NULL, 0); break; case CRYPT_S390_KMAC: ret = crypt_s390_kmac(KMAC_QUERY, &status, NULL, 0); break; default: return 0; } if (ret < 0) return 0; func &= CRYPT_S390_FUNC_MASK; func &= 0x7f; /* mask modifier bit */ return (status[func >> 3] & (0x80 >> (func & 7))) != 0; } #endif /* _CRYPTO_ARCH_S390_CRYPT_S390_H */ |