4 * Support for s390 cryptographic instructions.
6 * Copyright IBM Corp. 2003,2007
7 * Author(s): Thomas Spatzier
8 * Jan Glauber (jan.glauber@de.ibm.com)
10 * 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 * Software Foundation; either version 2 of the License, or (at your option)
16 #ifndef _CRYPTO_ARCH_S390_CRYPT_S390_H
17 #define _CRYPTO_ARCH_S390_CRYPT_S390_H
19 #include <asm/errno.h>
21 #define CRYPT_S390_OP_MASK 0xFF00
22 #define CRYPT_S390_FUNC_MASK 0x00FF
24 #define CRYPT_S390_PRIORITY 300
25 #define CRYPT_S390_COMPOSITE_PRIORITY 400
27 #define CRYPT_S390_MSA 0x1
28 #define CRYPT_S390_MSA3 0x2
29 #define CRYPT_S390_MSA4 0x4
31 /* s390 cryptographic operations */
32 enum crypt_s390_operations {
33 CRYPT_S390_KM = 0x0100,
34 CRYPT_S390_KMC = 0x0200,
35 CRYPT_S390_KIMD = 0x0300,
36 CRYPT_S390_KLMD = 0x0400,
37 CRYPT_S390_KMAC = 0x0500
41 * function codes for KM (CIPHER MESSAGE) instruction
42 * 0x80 is the decipher modifier bit
44 enum crypt_s390_km_func {
45 KM_QUERY = CRYPT_S390_KM | 0x0,
46 KM_DEA_ENCRYPT = CRYPT_S390_KM | 0x1,
47 KM_DEA_DECRYPT = CRYPT_S390_KM | 0x1 | 0x80,
48 KM_TDEA_128_ENCRYPT = CRYPT_S390_KM | 0x2,
49 KM_TDEA_128_DECRYPT = CRYPT_S390_KM | 0x2 | 0x80,
50 KM_TDEA_192_ENCRYPT = CRYPT_S390_KM | 0x3,
51 KM_TDEA_192_DECRYPT = CRYPT_S390_KM | 0x3 | 0x80,
52 KM_AES_128_ENCRYPT = CRYPT_S390_KM | 0x12,
53 KM_AES_128_DECRYPT = CRYPT_S390_KM | 0x12 | 0x80,
54 KM_AES_192_ENCRYPT = CRYPT_S390_KM | 0x13,
55 KM_AES_192_DECRYPT = CRYPT_S390_KM | 0x13 | 0x80,
56 KM_AES_256_ENCRYPT = CRYPT_S390_KM | 0x14,
57 KM_AES_256_DECRYPT = CRYPT_S390_KM | 0x14 | 0x80,
58 KM_XTS_128_ENCRYPT = CRYPT_S390_KM | 0x32,
59 KM_XTS_128_DECRYPT = CRYPT_S390_KM | 0x32 | 0x80,
60 KM_XTS_256_ENCRYPT = CRYPT_S390_KM | 0x34,
61 KM_XTS_256_DECRYPT = CRYPT_S390_KM | 0x34 | 0x80,
65 * function codes for KMC (CIPHER MESSAGE WITH CHAINING)
68 enum crypt_s390_kmc_func {
69 KMC_QUERY = CRYPT_S390_KMC | 0x0,
70 KMC_DEA_ENCRYPT = CRYPT_S390_KMC | 0x1,
71 KMC_DEA_DECRYPT = CRYPT_S390_KMC | 0x1 | 0x80,
72 KMC_TDEA_128_ENCRYPT = CRYPT_S390_KMC | 0x2,
73 KMC_TDEA_128_DECRYPT = CRYPT_S390_KMC | 0x2 | 0x80,
74 KMC_TDEA_192_ENCRYPT = CRYPT_S390_KMC | 0x3,
75 KMC_TDEA_192_DECRYPT = CRYPT_S390_KMC | 0x3 | 0x80,
76 KMC_AES_128_ENCRYPT = CRYPT_S390_KMC | 0x12,
77 KMC_AES_128_DECRYPT = CRYPT_S390_KMC | 0x12 | 0x80,
78 KMC_AES_192_ENCRYPT = CRYPT_S390_KMC | 0x13,
79 KMC_AES_192_DECRYPT = CRYPT_S390_KMC | 0x13 | 0x80,
80 KMC_AES_256_ENCRYPT = CRYPT_S390_KMC | 0x14,
81 KMC_AES_256_DECRYPT = CRYPT_S390_KMC | 0x14 | 0x80,
82 KMC_PRNG = CRYPT_S390_KMC | 0x43,
86 * function codes for KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST)
89 enum crypt_s390_kimd_func {
90 KIMD_QUERY = CRYPT_S390_KIMD | 0,
91 KIMD_SHA_1 = CRYPT_S390_KIMD | 1,
92 KIMD_SHA_256 = CRYPT_S390_KIMD | 2,
93 KIMD_SHA_512 = CRYPT_S390_KIMD | 3,
97 * function codes for KLMD (COMPUTE LAST MESSAGE DIGEST)
100 enum crypt_s390_klmd_func {
101 KLMD_QUERY = CRYPT_S390_KLMD | 0,
102 KLMD_SHA_1 = CRYPT_S390_KLMD | 1,
103 KLMD_SHA_256 = CRYPT_S390_KLMD | 2,
104 KLMD_SHA_512 = CRYPT_S390_KLMD | 3,
108 * function codes for KMAC (COMPUTE MESSAGE AUTHENTICATION CODE)
111 enum crypt_s390_kmac_func {
112 KMAC_QUERY = CRYPT_S390_KMAC | 0,
113 KMAC_DEA = CRYPT_S390_KMAC | 1,
114 KMAC_TDEA_128 = CRYPT_S390_KMAC | 2,
115 KMAC_TDEA_192 = CRYPT_S390_KMAC | 3
120 * @func: the function code passed to KM; see crypt_s390_km_func
121 * @param: address of parameter block; see POP for details on each func
122 * @dest: address of destination memory area
123 * @src: address of source memory area
124 * @src_len: length of src operand in bytes
126 * Executes the KM (CIPHER MESSAGE) operation of the CPU.
128 * Returns -1 for failure, 0 for the query func, number of processed
129 * bytes for encryption/decryption funcs
131 static inline int crypt_s390_km(long func, void *param,
132 u8 *dest, const u8 *src, long src_len)
134 register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
135 register void *__param asm("1") = param;
136 register const u8 *__src asm("2") = src;
137 register long __src_len asm("3") = src_len;
138 register u8 *__dest asm("4") = dest;
142 "0: .insn rre,0xb92e0000,%3,%1 \n" /* KM opcode */
143 "1: brc 1,0b \n" /* handle partial completion */
146 EX_TABLE(0b,2b) EX_TABLE(1b,2b)
147 : "=d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest)
148 : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
151 return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
156 * @func: the function code passed to KM; see crypt_s390_kmc_func
157 * @param: address of parameter block; see POP for details on each func
158 * @dest: address of destination memory area
159 * @src: address of source memory area
160 * @src_len: length of src operand in bytes
162 * Executes the KMC (CIPHER MESSAGE WITH CHAINING) operation of the CPU.
164 * Returns -1 for failure, 0 for the query func, number of processed
165 * bytes for encryption/decryption funcs
167 static inline int crypt_s390_kmc(long func, void *param,
168 u8 *dest, const u8 *src, long src_len)
170 register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
171 register void *__param asm("1") = param;
172 register const u8 *__src asm("2") = src;
173 register long __src_len asm("3") = src_len;
174 register u8 *__dest asm("4") = dest;
178 "0: .insn rre,0xb92f0000,%3,%1 \n" /* KMC opcode */
179 "1: brc 1,0b \n" /* handle partial completion */
182 EX_TABLE(0b,2b) EX_TABLE(1b,2b)
183 : "=d" (ret), "+a" (__src), "+d" (__src_len), "+a" (__dest)
184 : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
187 return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
192 * @func: the function code passed to KM; see crypt_s390_kimd_func
193 * @param: address of parameter block; see POP for details on each func
194 * @src: address of source memory area
195 * @src_len: length of src operand in bytes
197 * Executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) operation
200 * Returns -1 for failure, 0 for the query func, number of processed
201 * bytes for digest funcs
203 static inline int crypt_s390_kimd(long func, void *param,
204 const u8 *src, long src_len)
206 register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
207 register void *__param asm("1") = param;
208 register const u8 *__src asm("2") = src;
209 register long __src_len asm("3") = src_len;
213 "0: .insn rre,0xb93e0000,%1,%1 \n" /* KIMD opcode */
214 "1: brc 1,0b \n" /* handle partial completion */
217 EX_TABLE(0b,2b) EX_TABLE(1b,2b)
218 : "=d" (ret), "+a" (__src), "+d" (__src_len)
219 : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
222 return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
227 * @func: the function code passed to KM; see crypt_s390_klmd_func
228 * @param: address of parameter block; see POP for details on each func
229 * @src: address of source memory area
230 * @src_len: length of src operand in bytes
232 * Executes the KLMD (COMPUTE LAST MESSAGE DIGEST) operation of the CPU.
234 * Returns -1 for failure, 0 for the query func, number of processed
235 * bytes for digest funcs
237 static inline int crypt_s390_klmd(long func, void *param,
238 const u8 *src, long src_len)
240 register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
241 register void *__param asm("1") = param;
242 register const u8 *__src asm("2") = src;
243 register long __src_len asm("3") = src_len;
247 "0: .insn rre,0xb93f0000,%1,%1 \n" /* KLMD opcode */
248 "1: brc 1,0b \n" /* handle partial completion */
251 EX_TABLE(0b,2b) EX_TABLE(1b,2b)
252 : "=d" (ret), "+a" (__src), "+d" (__src_len)
253 : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
256 return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
261 * @func: the function code passed to KM; see crypt_s390_klmd_func
262 * @param: address of parameter block; see POP for details on each func
263 * @src: address of source memory area
264 * @src_len: length of src operand in bytes
266 * Executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) operation
269 * Returns -1 for failure, 0 for the query func, number of processed
270 * bytes for digest funcs
272 static inline int crypt_s390_kmac(long func, void *param,
273 const u8 *src, long src_len)
275 register long __func asm("0") = func & CRYPT_S390_FUNC_MASK;
276 register void *__param asm("1") = param;
277 register const u8 *__src asm("2") = src;
278 register long __src_len asm("3") = src_len;
282 "0: .insn rre,0xb91e0000,%1,%1 \n" /* KLAC opcode */
283 "1: brc 1,0b \n" /* handle partial completion */
286 EX_TABLE(0b,2b) EX_TABLE(1b,2b)
287 : "=d" (ret), "+a" (__src), "+d" (__src_len)
288 : "d" (__func), "a" (__param), "0" (-1) : "cc", "memory");
291 return (func & CRYPT_S390_FUNC_MASK) ? src_len - __src_len : __src_len;
295 * crypt_s390_func_available:
296 * @func: the function code of the specific function; 0 if op in general
298 * Tests if a specific crypto function is implemented on the machine.
300 * Returns 1 if func available; 0 if func or op in general not available
302 static inline int crypt_s390_func_available(int func,
303 unsigned int facility_mask)
305 unsigned char status[16];
308 if (facility_mask & CRYPT_S390_MSA && !test_facility(17))
310 if (facility_mask & CRYPT_S390_MSA3 && !test_facility(76))
312 if (facility_mask & CRYPT_S390_MSA4 && !test_facility(77))
315 switch (func & CRYPT_S390_OP_MASK) {
317 ret = crypt_s390_km(KM_QUERY, &status, NULL, NULL, 0);
320 ret = crypt_s390_kmc(KMC_QUERY, &status, NULL, NULL, 0);
322 case CRYPT_S390_KIMD:
323 ret = crypt_s390_kimd(KIMD_QUERY, &status, NULL, 0);
325 case CRYPT_S390_KLMD:
326 ret = crypt_s390_klmd(KLMD_QUERY, &status, NULL, 0);
328 case CRYPT_S390_KMAC:
329 ret = crypt_s390_kmac(KMAC_QUERY, &status, NULL, 0);
336 func &= CRYPT_S390_FUNC_MASK;
337 func &= 0x7f; /* mask modifier bit */
338 return (status[func >> 3] & (0x80 >> (func & 7))) != 0;
343 * @func: the function code passed to KM; see crypt_s390_km_func
344 * @param: address of parameter block; see POP for details on each func
346 * Executes the PCC (PERFORM CRYPTOGRAPHIC COMPUTATION) operation of the CPU.
348 * Returns -1 for failure, 0 for success.
350 static inline int crypt_s390_pcc(long func, void *param)
352 register long __func asm("0") = func & 0x7f; /* encrypt or decrypt */
353 register void *__param asm("1") = param;
357 "0: .insn rre,0xb92c0000,0,0 \n" /* PCC opcode */
358 "1: brc 1,0b \n" /* handle partial completion */
361 EX_TABLE(0b,2b) EX_TABLE(1b,2b)
363 : "d" (__func), "a" (__param) : "cc", "memory");
368 #endif /* _CRYPTO_ARCH_S390_CRYPT_S390_H */