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
|
/*
* 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
/* s930 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,
};
/*
* 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,
};
/*
* 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;
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 */
|
