1c7d4d259SMartin Schwidefsky /* 2c7d4d259SMartin Schwidefsky * CP Assist for Cryptographic Functions (CPACF) 3c7d4d259SMartin Schwidefsky * 4c7d4d259SMartin Schwidefsky * Copyright IBM Corp. 2003, 2016 5c7d4d259SMartin Schwidefsky * Author(s): Thomas Spatzier 6c7d4d259SMartin Schwidefsky * Jan Glauber 7c7d4d259SMartin Schwidefsky * Harald Freudenberger (freude@de.ibm.com) 8c7d4d259SMartin Schwidefsky * Martin Schwidefsky <schwidefsky@de.ibm.com> 9c7d4d259SMartin Schwidefsky */ 10c7d4d259SMartin Schwidefsky #ifndef _ASM_S390_CPACF_H 11c7d4d259SMartin Schwidefsky #define _ASM_S390_CPACF_H 12c7d4d259SMartin Schwidefsky 13c7d4d259SMartin Schwidefsky #include <asm/facility.h> 14c7d4d259SMartin Schwidefsky 15c7d4d259SMartin Schwidefsky /* 16c7d4d259SMartin Schwidefsky * Instruction opcodes for the CPACF instructions 17c7d4d259SMartin Schwidefsky */ 18c7d4d259SMartin Schwidefsky #define CPACF_KMAC 0xb91e /* MSA */ 19c7d4d259SMartin Schwidefsky #define CPACF_KM 0xb92e /* MSA */ 20c7d4d259SMartin Schwidefsky #define CPACF_KMC 0xb92f /* MSA */ 21c7d4d259SMartin Schwidefsky #define CPACF_KIMD 0xb93e /* MSA */ 22c7d4d259SMartin Schwidefsky #define CPACF_KLMD 0xb93f /* MSA */ 231afd43e0SDavid Hildenbrand #define CPACF_PCKMO 0xb928 /* MSA3 */ 241afd43e0SDavid Hildenbrand #define CPACF_KMF 0xb92a /* MSA4 */ 251afd43e0SDavid Hildenbrand #define CPACF_KMO 0xb92b /* MSA4 */ 26c7d4d259SMartin Schwidefsky #define CPACF_PCC 0xb92c /* MSA4 */ 27c7d4d259SMartin Schwidefsky #define CPACF_KMCTR 0xb92d /* MSA4 */ 28c7d4d259SMartin Schwidefsky #define CPACF_PPNO 0xb93c /* MSA5 */ 29c7d4d259SMartin Schwidefsky 30c7d4d259SMartin Schwidefsky /* 31edc63a37SMartin Schwidefsky * Decryption modifier bit 32edc63a37SMartin Schwidefsky */ 33edc63a37SMartin Schwidefsky #define CPACF_DECRYPT 0x80 34edc63a37SMartin Schwidefsky 35edc63a37SMartin Schwidefsky /* 36edc63a37SMartin Schwidefsky * Function codes for the KM (CIPHER MESSAGE) instruction 37c7d4d259SMartin Schwidefsky */ 38c7d4d259SMartin Schwidefsky #define CPACF_KM_QUERY 0x00 39edc63a37SMartin Schwidefsky #define CPACF_KM_DEA 0x01 40edc63a37SMartin Schwidefsky #define CPACF_KM_TDEA_128 0x02 41edc63a37SMartin Schwidefsky #define CPACF_KM_TDEA_192 0x03 42edc63a37SMartin Schwidefsky #define CPACF_KM_AES_128 0x12 43edc63a37SMartin Schwidefsky #define CPACF_KM_AES_192 0x13 44edc63a37SMartin Schwidefsky #define CPACF_KM_AES_256 0x14 45edc63a37SMartin Schwidefsky #define CPACF_KM_XTS_128 0x32 46edc63a37SMartin Schwidefsky #define CPACF_KM_XTS_256 0x34 47c7d4d259SMartin Schwidefsky 48c7d4d259SMartin Schwidefsky /* 49c7d4d259SMartin Schwidefsky * Function codes for the KMC (CIPHER MESSAGE WITH CHAINING) 50edc63a37SMartin Schwidefsky * instruction 51c7d4d259SMartin Schwidefsky */ 52c7d4d259SMartin Schwidefsky #define CPACF_KMC_QUERY 0x00 53edc63a37SMartin Schwidefsky #define CPACF_KMC_DEA 0x01 54edc63a37SMartin Schwidefsky #define CPACF_KMC_TDEA_128 0x02 55edc63a37SMartin Schwidefsky #define CPACF_KMC_TDEA_192 0x03 56edc63a37SMartin Schwidefsky #define CPACF_KMC_AES_128 0x12 57edc63a37SMartin Schwidefsky #define CPACF_KMC_AES_192 0x13 58edc63a37SMartin Schwidefsky #define CPACF_KMC_AES_256 0x14 59c7d4d259SMartin Schwidefsky #define CPACF_KMC_PRNG 0x43 60c7d4d259SMartin Schwidefsky 61c7d4d259SMartin Schwidefsky /* 62c7d4d259SMartin Schwidefsky * Function codes for the KMCTR (CIPHER MESSAGE WITH COUNTER) 63edc63a37SMartin Schwidefsky * instruction 64c7d4d259SMartin Schwidefsky */ 65c7d4d259SMartin Schwidefsky #define CPACF_KMCTR_QUERY 0x00 66edc63a37SMartin Schwidefsky #define CPACF_KMCTR_DEA 0x01 67edc63a37SMartin Schwidefsky #define CPACF_KMCTR_TDEA_128 0x02 68edc63a37SMartin Schwidefsky #define CPACF_KMCTR_TDEA_192 0x03 69edc63a37SMartin Schwidefsky #define CPACF_KMCTR_AES_128 0x12 70edc63a37SMartin Schwidefsky #define CPACF_KMCTR_AES_192 0x13 71edc63a37SMartin Schwidefsky #define CPACF_KMCTR_AES_256 0x14 72c7d4d259SMartin Schwidefsky 73c7d4d259SMartin Schwidefsky /* 74c7d4d259SMartin Schwidefsky * Function codes for the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) 75edc63a37SMartin Schwidefsky * instruction 76c7d4d259SMartin Schwidefsky */ 77c7d4d259SMartin Schwidefsky #define CPACF_KIMD_QUERY 0x00 78c7d4d259SMartin Schwidefsky #define CPACF_KIMD_SHA_1 0x01 79c7d4d259SMartin Schwidefsky #define CPACF_KIMD_SHA_256 0x02 80c7d4d259SMartin Schwidefsky #define CPACF_KIMD_SHA_512 0x03 81c7d4d259SMartin Schwidefsky #define CPACF_KIMD_GHASH 0x41 82c7d4d259SMartin Schwidefsky 83c7d4d259SMartin Schwidefsky /* 84c7d4d259SMartin Schwidefsky * Function codes for the KLMD (COMPUTE LAST MESSAGE DIGEST) 85edc63a37SMartin Schwidefsky * instruction 86c7d4d259SMartin Schwidefsky */ 87c7d4d259SMartin Schwidefsky #define CPACF_KLMD_QUERY 0x00 88c7d4d259SMartin Schwidefsky #define CPACF_KLMD_SHA_1 0x01 89c7d4d259SMartin Schwidefsky #define CPACF_KLMD_SHA_256 0x02 90c7d4d259SMartin Schwidefsky #define CPACF_KLMD_SHA_512 0x03 91c7d4d259SMartin Schwidefsky 92c7d4d259SMartin Schwidefsky /* 93c7d4d259SMartin Schwidefsky * function codes for the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) 94edc63a37SMartin Schwidefsky * instruction 95c7d4d259SMartin Schwidefsky */ 96c7d4d259SMartin Schwidefsky #define CPACF_KMAC_QUERY 0x00 97c7d4d259SMartin Schwidefsky #define CPACF_KMAC_DEA 0x01 98c7d4d259SMartin Schwidefsky #define CPACF_KMAC_TDEA_128 0x02 99c7d4d259SMartin Schwidefsky #define CPACF_KMAC_TDEA_192 0x03 100c7d4d259SMartin Schwidefsky 101c7d4d259SMartin Schwidefsky /* 102c7d4d259SMartin Schwidefsky * Function codes for the PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION) 103edc63a37SMartin Schwidefsky * instruction 104c7d4d259SMartin Schwidefsky */ 105c7d4d259SMartin Schwidefsky #define CPACF_PPNO_QUERY 0x00 106c7d4d259SMartin Schwidefsky #define CPACF_PPNO_SHA512_DRNG_GEN 0x03 107c7d4d259SMartin Schwidefsky #define CPACF_PPNO_SHA512_DRNG_SEED 0x83 108c7d4d259SMartin Schwidefsky 109*69c0e360SMartin Schwidefsky typedef struct { unsigned char bytes[16]; } cpacf_mask_t; 110*69c0e360SMartin Schwidefsky 111c7d4d259SMartin Schwidefsky /** 112c7d4d259SMartin Schwidefsky * cpacf_query() - check if a specific CPACF function is available 113c7d4d259SMartin Schwidefsky * @opcode: the opcode of the crypto instruction 114c7d4d259SMartin Schwidefsky * @func: the function code to test for 115c7d4d259SMartin Schwidefsky * 116c7d4d259SMartin Schwidefsky * Executes the query function for the given crypto instruction @opcode 117c7d4d259SMartin Schwidefsky * and checks if @func is available 118c7d4d259SMartin Schwidefsky * 119c7d4d259SMartin Schwidefsky * Returns 1 if @func is available for @opcode, 0 otherwise 120c7d4d259SMartin Schwidefsky */ 121*69c0e360SMartin Schwidefsky static inline void __cpacf_query(unsigned int opcode, cpacf_mask_t *mask) 122c7d4d259SMartin Schwidefsky { 123c7d4d259SMartin Schwidefsky register unsigned long r0 asm("0") = 0; /* query function */ 124*69c0e360SMartin Schwidefsky register unsigned long r1 asm("1") = (unsigned long) mask; 125c7d4d259SMartin Schwidefsky 126c7d4d259SMartin Schwidefsky asm volatile( 1271afd43e0SDavid Hildenbrand " spm 0\n" /* pckmo doesn't change the cc */ 128c7d4d259SMartin Schwidefsky /* Parameter registers are ignored, but may not be 0 */ 129c7d4d259SMartin Schwidefsky "0: .insn rrf,%[opc] << 16,2,2,2,0\n" 130c7d4d259SMartin Schwidefsky " brc 1,0b\n" /* handle partial completion */ 131*69c0e360SMartin Schwidefsky : "=m" (*mask) 132c7d4d259SMartin Schwidefsky : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (opcode) 133c7d4d259SMartin Schwidefsky : "cc"); 134c7d4d259SMartin Schwidefsky } 135c7d4d259SMartin Schwidefsky 136*69c0e360SMartin Schwidefsky static inline int __cpacf_check_opcode(unsigned int opcode) 137c7d4d259SMartin Schwidefsky { 138c7d4d259SMartin Schwidefsky switch (opcode) { 139c7d4d259SMartin Schwidefsky case CPACF_KMAC: 140c7d4d259SMartin Schwidefsky case CPACF_KM: 141c7d4d259SMartin Schwidefsky case CPACF_KMC: 142c7d4d259SMartin Schwidefsky case CPACF_KIMD: 143c7d4d259SMartin Schwidefsky case CPACF_KLMD: 144*69c0e360SMartin Schwidefsky return test_facility(17); /* check for MSA */ 1451afd43e0SDavid Hildenbrand case CPACF_PCKMO: 146*69c0e360SMartin Schwidefsky return test_facility(76); /* check for MSA3 */ 1471afd43e0SDavid Hildenbrand case CPACF_KMF: 1481afd43e0SDavid Hildenbrand case CPACF_KMO: 149c7d4d259SMartin Schwidefsky case CPACF_PCC: 150c7d4d259SMartin Schwidefsky case CPACF_KMCTR: 151*69c0e360SMartin Schwidefsky return test_facility(77); /* check for MSA4 */ 152c7d4d259SMartin Schwidefsky case CPACF_PPNO: 153*69c0e360SMartin Schwidefsky return test_facility(57); /* check for MSA5 */ 154c7d4d259SMartin Schwidefsky default: 155c7d4d259SMartin Schwidefsky BUG(); 156c7d4d259SMartin Schwidefsky } 157*69c0e360SMartin Schwidefsky } 158*69c0e360SMartin Schwidefsky 159*69c0e360SMartin Schwidefsky static inline int cpacf_query(unsigned int opcode, cpacf_mask_t *mask) 160*69c0e360SMartin Schwidefsky { 161*69c0e360SMartin Schwidefsky if (__cpacf_check_opcode(opcode)) { 162*69c0e360SMartin Schwidefsky __cpacf_query(opcode, mask); 163*69c0e360SMartin Schwidefsky return 1; 164*69c0e360SMartin Schwidefsky } 165*69c0e360SMartin Schwidefsky memset(mask, 0, sizeof(*mask)); 166*69c0e360SMartin Schwidefsky return 0; 167*69c0e360SMartin Schwidefsky } 168*69c0e360SMartin Schwidefsky 169*69c0e360SMartin Schwidefsky static inline int cpacf_test_func(cpacf_mask_t *mask, unsigned int func) 170*69c0e360SMartin Schwidefsky { 171*69c0e360SMartin Schwidefsky return (mask->bytes[func >> 3] & (0x80 >> (func & 7))) != 0; 172*69c0e360SMartin Schwidefsky } 173*69c0e360SMartin Schwidefsky 174*69c0e360SMartin Schwidefsky static inline int cpacf_query_func(unsigned int opcode, unsigned int func) 175*69c0e360SMartin Schwidefsky { 176*69c0e360SMartin Schwidefsky cpacf_mask_t mask; 177*69c0e360SMartin Schwidefsky 178*69c0e360SMartin Schwidefsky if (cpacf_query(opcode, &mask)) 179*69c0e360SMartin Schwidefsky return cpacf_test_func(&mask, func); 180*69c0e360SMartin Schwidefsky return 0; 181c7d4d259SMartin Schwidefsky } 182c7d4d259SMartin Schwidefsky 183c7d4d259SMartin Schwidefsky /** 184c7d4d259SMartin Schwidefsky * cpacf_km() - executes the KM (CIPHER MESSAGE) instruction 185c7d4d259SMartin Schwidefsky * @func: the function code passed to KM; see CPACF_KM_xxx defines 186c7d4d259SMartin Schwidefsky * @param: address of parameter block; see POP for details on each func 187c7d4d259SMartin Schwidefsky * @dest: address of destination memory area 188c7d4d259SMartin Schwidefsky * @src: address of source memory area 189c7d4d259SMartin Schwidefsky * @src_len: length of src operand in bytes 190c7d4d259SMartin Schwidefsky * 191c7d4d259SMartin Schwidefsky * Returns 0 for the query func, number of processed bytes for 192c7d4d259SMartin Schwidefsky * encryption/decryption funcs 193c7d4d259SMartin Schwidefsky */ 194edc63a37SMartin Schwidefsky static inline int cpacf_km(unsigned long func, void *param, 195c7d4d259SMartin Schwidefsky u8 *dest, const u8 *src, long src_len) 196c7d4d259SMartin Schwidefsky { 197c7d4d259SMartin Schwidefsky register unsigned long r0 asm("0") = (unsigned long) func; 198c7d4d259SMartin Schwidefsky register unsigned long r1 asm("1") = (unsigned long) param; 199c7d4d259SMartin Schwidefsky register unsigned long r2 asm("2") = (unsigned long) src; 200c7d4d259SMartin Schwidefsky register unsigned long r3 asm("3") = (unsigned long) src_len; 201c7d4d259SMartin Schwidefsky register unsigned long r4 asm("4") = (unsigned long) dest; 202c7d4d259SMartin Schwidefsky 203c7d4d259SMartin Schwidefsky asm volatile( 204c7d4d259SMartin Schwidefsky "0: .insn rre,%[opc] << 16,%[dst],%[src]\n" 205c7d4d259SMartin Schwidefsky " brc 1,0b\n" /* handle partial completion */ 206c7d4d259SMartin Schwidefsky : [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4) 207c7d4d259SMartin Schwidefsky : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KM) 208c7d4d259SMartin Schwidefsky : "cc", "memory"); 209c7d4d259SMartin Schwidefsky 210c7d4d259SMartin Schwidefsky return src_len - r3; 211c7d4d259SMartin Schwidefsky } 212c7d4d259SMartin Schwidefsky 213c7d4d259SMartin Schwidefsky /** 214c7d4d259SMartin Schwidefsky * cpacf_kmc() - executes the KMC (CIPHER MESSAGE WITH CHAINING) instruction 215c7d4d259SMartin Schwidefsky * @func: the function code passed to KM; see CPACF_KMC_xxx defines 216c7d4d259SMartin Schwidefsky * @param: address of parameter block; see POP for details on each func 217c7d4d259SMartin Schwidefsky * @dest: address of destination memory area 218c7d4d259SMartin Schwidefsky * @src: address of source memory area 219c7d4d259SMartin Schwidefsky * @src_len: length of src operand in bytes 220c7d4d259SMartin Schwidefsky * 221c7d4d259SMartin Schwidefsky * Returns 0 for the query func, number of processed bytes for 222c7d4d259SMartin Schwidefsky * encryption/decryption funcs 223c7d4d259SMartin Schwidefsky */ 224edc63a37SMartin Schwidefsky static inline int cpacf_kmc(unsigned long func, void *param, 225c7d4d259SMartin Schwidefsky u8 *dest, const u8 *src, long src_len) 226c7d4d259SMartin Schwidefsky { 227c7d4d259SMartin Schwidefsky register unsigned long r0 asm("0") = (unsigned long) func; 228c7d4d259SMartin Schwidefsky register unsigned long r1 asm("1") = (unsigned long) param; 229c7d4d259SMartin Schwidefsky register unsigned long r2 asm("2") = (unsigned long) src; 230c7d4d259SMartin Schwidefsky register unsigned long r3 asm("3") = (unsigned long) src_len; 231c7d4d259SMartin Schwidefsky register unsigned long r4 asm("4") = (unsigned long) dest; 232c7d4d259SMartin Schwidefsky 233c7d4d259SMartin Schwidefsky asm volatile( 234c7d4d259SMartin Schwidefsky "0: .insn rre,%[opc] << 16,%[dst],%[src]\n" 235c7d4d259SMartin Schwidefsky " brc 1,0b\n" /* handle partial completion */ 236c7d4d259SMartin Schwidefsky : [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4) 237c7d4d259SMartin Schwidefsky : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMC) 238c7d4d259SMartin Schwidefsky : "cc", "memory"); 239c7d4d259SMartin Schwidefsky 240c7d4d259SMartin Schwidefsky return src_len - r3; 241c7d4d259SMartin Schwidefsky } 242c7d4d259SMartin Schwidefsky 243c7d4d259SMartin Schwidefsky /** 244c7d4d259SMartin Schwidefsky * cpacf_kimd() - executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) 245c7d4d259SMartin Schwidefsky * instruction 246c7d4d259SMartin Schwidefsky * @func: the function code passed to KM; see CPACF_KIMD_xxx defines 247c7d4d259SMartin Schwidefsky * @param: address of parameter block; see POP for details on each func 248c7d4d259SMartin Schwidefsky * @src: address of source memory area 249c7d4d259SMartin Schwidefsky * @src_len: length of src operand in bytes 250c7d4d259SMartin Schwidefsky */ 2510177db01SMartin Schwidefsky static inline void cpacf_kimd(unsigned long func, void *param, 252c7d4d259SMartin Schwidefsky const u8 *src, long src_len) 253c7d4d259SMartin Schwidefsky { 254c7d4d259SMartin Schwidefsky register unsigned long r0 asm("0") = (unsigned long) func; 255c7d4d259SMartin Schwidefsky register unsigned long r1 asm("1") = (unsigned long) param; 256c7d4d259SMartin Schwidefsky register unsigned long r2 asm("2") = (unsigned long) src; 257c7d4d259SMartin Schwidefsky register unsigned long r3 asm("3") = (unsigned long) src_len; 258c7d4d259SMartin Schwidefsky 259c7d4d259SMartin Schwidefsky asm volatile( 260c7d4d259SMartin Schwidefsky "0: .insn rre,%[opc] << 16,0,%[src]\n" 261c7d4d259SMartin Schwidefsky " brc 1,0b\n" /* handle partial completion */ 262c7d4d259SMartin Schwidefsky : [src] "+a" (r2), [len] "+d" (r3) 263c7d4d259SMartin Schwidefsky : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KIMD) 264c7d4d259SMartin Schwidefsky : "cc", "memory"); 265c7d4d259SMartin Schwidefsky } 266c7d4d259SMartin Schwidefsky 267c7d4d259SMartin Schwidefsky /** 268c7d4d259SMartin Schwidefsky * cpacf_klmd() - executes the KLMD (COMPUTE LAST MESSAGE DIGEST) instruction 269c7d4d259SMartin Schwidefsky * @func: the function code passed to KM; see CPACF_KLMD_xxx defines 270c7d4d259SMartin Schwidefsky * @param: address of parameter block; see POP for details on each func 271c7d4d259SMartin Schwidefsky * @src: address of source memory area 272c7d4d259SMartin Schwidefsky * @src_len: length of src operand in bytes 273c7d4d259SMartin Schwidefsky */ 2740177db01SMartin Schwidefsky static inline void cpacf_klmd(unsigned long func, void *param, 275c7d4d259SMartin Schwidefsky const u8 *src, long src_len) 276c7d4d259SMartin Schwidefsky { 277c7d4d259SMartin Schwidefsky register unsigned long r0 asm("0") = (unsigned long) func; 278c7d4d259SMartin Schwidefsky register unsigned long r1 asm("1") = (unsigned long) param; 279c7d4d259SMartin Schwidefsky register unsigned long r2 asm("2") = (unsigned long) src; 280c7d4d259SMartin Schwidefsky register unsigned long r3 asm("3") = (unsigned long) src_len; 281c7d4d259SMartin Schwidefsky 282c7d4d259SMartin Schwidefsky asm volatile( 283c7d4d259SMartin Schwidefsky "0: .insn rre,%[opc] << 16,0,%[src]\n" 284c7d4d259SMartin Schwidefsky " brc 1,0b\n" /* handle partial completion */ 285c7d4d259SMartin Schwidefsky : [src] "+a" (r2), [len] "+d" (r3) 286c7d4d259SMartin Schwidefsky : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KLMD) 287c7d4d259SMartin Schwidefsky : "cc", "memory"); 288c7d4d259SMartin Schwidefsky } 289c7d4d259SMartin Schwidefsky 290c7d4d259SMartin Schwidefsky /** 291c7d4d259SMartin Schwidefsky * cpacf_kmac() - executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) 292c7d4d259SMartin Schwidefsky * instruction 293c7d4d259SMartin Schwidefsky * @func: the function code passed to KM; see CPACF_KMAC_xxx defines 294c7d4d259SMartin Schwidefsky * @param: address of parameter block; see POP for details on each func 295c7d4d259SMartin Schwidefsky * @src: address of source memory area 296c7d4d259SMartin Schwidefsky * @src_len: length of src operand in bytes 297c7d4d259SMartin Schwidefsky * 298c7d4d259SMartin Schwidefsky * Returns 0 for the query func, number of processed bytes for digest funcs 299c7d4d259SMartin Schwidefsky */ 300edc63a37SMartin Schwidefsky static inline int cpacf_kmac(unsigned long func, void *param, 301c7d4d259SMartin Schwidefsky const u8 *src, long src_len) 302c7d4d259SMartin Schwidefsky { 303c7d4d259SMartin Schwidefsky register unsigned long r0 asm("0") = (unsigned long) func; 304c7d4d259SMartin Schwidefsky register unsigned long r1 asm("1") = (unsigned long) param; 305c7d4d259SMartin Schwidefsky register unsigned long r2 asm("2") = (unsigned long) src; 306c7d4d259SMartin Schwidefsky register unsigned long r3 asm("3") = (unsigned long) src_len; 307c7d4d259SMartin Schwidefsky 308c7d4d259SMartin Schwidefsky asm volatile( 309c7d4d259SMartin Schwidefsky "0: .insn rre,%[opc] << 16,0,%[src]\n" 310c7d4d259SMartin Schwidefsky " brc 1,0b\n" /* handle partial completion */ 311c7d4d259SMartin Schwidefsky : [src] "+a" (r2), [len] "+d" (r3) 312c7d4d259SMartin Schwidefsky : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMAC) 313c7d4d259SMartin Schwidefsky : "cc", "memory"); 314c7d4d259SMartin Schwidefsky 315c7d4d259SMartin Schwidefsky return src_len - r3; 316c7d4d259SMartin Schwidefsky } 317c7d4d259SMartin Schwidefsky 318c7d4d259SMartin Schwidefsky /** 319c7d4d259SMartin Schwidefsky * cpacf_kmctr() - executes the KMCTR (CIPHER MESSAGE WITH COUNTER) instruction 320c7d4d259SMartin Schwidefsky * @func: the function code passed to KMCTR; see CPACF_KMCTR_xxx defines 321c7d4d259SMartin Schwidefsky * @param: address of parameter block; see POP for details on each func 322c7d4d259SMartin Schwidefsky * @dest: address of destination memory area 323c7d4d259SMartin Schwidefsky * @src: address of source memory area 324c7d4d259SMartin Schwidefsky * @src_len: length of src operand in bytes 325c7d4d259SMartin Schwidefsky * @counter: address of counter value 326c7d4d259SMartin Schwidefsky * 327c7d4d259SMartin Schwidefsky * Returns 0 for the query func, number of processed bytes for 328c7d4d259SMartin Schwidefsky * encryption/decryption funcs 329c7d4d259SMartin Schwidefsky */ 330edc63a37SMartin Schwidefsky static inline int cpacf_kmctr(unsigned long func, void *param, u8 *dest, 331c7d4d259SMartin Schwidefsky const u8 *src, long src_len, u8 *counter) 332c7d4d259SMartin Schwidefsky { 333c7d4d259SMartin Schwidefsky register unsigned long r0 asm("0") = (unsigned long) func; 334c7d4d259SMartin Schwidefsky register unsigned long r1 asm("1") = (unsigned long) param; 335c7d4d259SMartin Schwidefsky register unsigned long r2 asm("2") = (unsigned long) src; 336c7d4d259SMartin Schwidefsky register unsigned long r3 asm("3") = (unsigned long) src_len; 337c7d4d259SMartin Schwidefsky register unsigned long r4 asm("4") = (unsigned long) dest; 338c7d4d259SMartin Schwidefsky register unsigned long r6 asm("6") = (unsigned long) counter; 339c7d4d259SMartin Schwidefsky 340c7d4d259SMartin Schwidefsky asm volatile( 341c7d4d259SMartin Schwidefsky "0: .insn rrf,%[opc] << 16,%[dst],%[src],%[ctr],0\n" 342c7d4d259SMartin Schwidefsky " brc 1,0b\n" /* handle partial completion */ 343c7d4d259SMartin Schwidefsky : [src] "+a" (r2), [len] "+d" (r3), 344c7d4d259SMartin Schwidefsky [dst] "+a" (r4), [ctr] "+a" (r6) 345c7d4d259SMartin Schwidefsky : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMCTR) 346c7d4d259SMartin Schwidefsky : "cc", "memory"); 347c7d4d259SMartin Schwidefsky 348c7d4d259SMartin Schwidefsky return src_len - r3; 349c7d4d259SMartin Schwidefsky } 350c7d4d259SMartin Schwidefsky 351c7d4d259SMartin Schwidefsky /** 352c7d4d259SMartin Schwidefsky * cpacf_ppno() - executes the PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION) 353c7d4d259SMartin Schwidefsky * instruction 354c7d4d259SMartin Schwidefsky * @func: the function code passed to PPNO; see CPACF_PPNO_xxx defines 355c7d4d259SMartin Schwidefsky * @param: address of parameter block; see POP for details on each func 356c7d4d259SMartin Schwidefsky * @dest: address of destination memory area 357c7d4d259SMartin Schwidefsky * @dest_len: size of destination memory area in bytes 358c7d4d259SMartin Schwidefsky * @seed: address of seed data 359c7d4d259SMartin Schwidefsky * @seed_len: size of seed data in bytes 360c7d4d259SMartin Schwidefsky */ 3610177db01SMartin Schwidefsky static inline void cpacf_ppno(unsigned long func, void *param, 362c7d4d259SMartin Schwidefsky u8 *dest, long dest_len, 363c7d4d259SMartin Schwidefsky const u8 *seed, long seed_len) 364c7d4d259SMartin Schwidefsky { 365c7d4d259SMartin Schwidefsky register unsigned long r0 asm("0") = (unsigned long) func; 366c7d4d259SMartin Schwidefsky register unsigned long r1 asm("1") = (unsigned long) param; 367c7d4d259SMartin Schwidefsky register unsigned long r2 asm("2") = (unsigned long) dest; 368c7d4d259SMartin Schwidefsky register unsigned long r3 asm("3") = (unsigned long) dest_len; 369c7d4d259SMartin Schwidefsky register unsigned long r4 asm("4") = (unsigned long) seed; 370c7d4d259SMartin Schwidefsky register unsigned long r5 asm("5") = (unsigned long) seed_len; 371c7d4d259SMartin Schwidefsky 372c7d4d259SMartin Schwidefsky asm volatile ( 373c7d4d259SMartin Schwidefsky "0: .insn rre,%[opc] << 16,%[dst],%[seed]\n" 374c7d4d259SMartin Schwidefsky " brc 1,0b\n" /* handle partial completion */ 375c7d4d259SMartin Schwidefsky : [dst] "+a" (r2), [dlen] "+d" (r3) 376c7d4d259SMartin Schwidefsky : [fc] "d" (r0), [pba] "a" (r1), 377c7d4d259SMartin Schwidefsky [seed] "a" (r4), [slen] "d" (r5), [opc] "i" (CPACF_PPNO) 378c7d4d259SMartin Schwidefsky : "cc", "memory"); 379c7d4d259SMartin Schwidefsky } 380c7d4d259SMartin Schwidefsky 381c7d4d259SMartin Schwidefsky /** 382c7d4d259SMartin Schwidefsky * cpacf_pcc() - executes the PCC (PERFORM CRYPTOGRAPHIC COMPUTATION) 383c7d4d259SMartin Schwidefsky * instruction 384c7d4d259SMartin Schwidefsky * @func: the function code passed to PCC; see CPACF_KM_xxx defines 385c7d4d259SMartin Schwidefsky * @param: address of parameter block; see POP for details on each func 386c7d4d259SMartin Schwidefsky */ 3870177db01SMartin Schwidefsky static inline void cpacf_pcc(unsigned long func, void *param) 388c7d4d259SMartin Schwidefsky { 389c7d4d259SMartin Schwidefsky register unsigned long r0 asm("0") = (unsigned long) func; 390c7d4d259SMartin Schwidefsky register unsigned long r1 asm("1") = (unsigned long) param; 391c7d4d259SMartin Schwidefsky 392c7d4d259SMartin Schwidefsky asm volatile( 393c7d4d259SMartin Schwidefsky "0: .insn rre,%[opc] << 16,0,0\n" /* PCC opcode */ 394c7d4d259SMartin Schwidefsky " brc 1,0b\n" /* handle partial completion */ 395c7d4d259SMartin Schwidefsky : 396c7d4d259SMartin Schwidefsky : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_PCC) 397c7d4d259SMartin Schwidefsky : "cc", "memory"); 398c7d4d259SMartin Schwidefsky } 399c7d4d259SMartin Schwidefsky 400c7d4d259SMartin Schwidefsky #endif /* _ASM_S390_CPACF_H */ 401