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
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
|
/*
* CP Assist for Cryptographic Functions (CPACF)
*
* Copyright IBM Corp. 2003, 2016
* Author(s): Thomas Spatzier
* Jan Glauber
* Harald Freudenberger (freude@de.ibm.com)
* Martin Schwidefsky <schwidefsky@de.ibm.com>
*/
#ifndef _ASM_S390_CPACF_H
#define _ASM_S390_CPACF_H
#include <asm/facility.h>
/*
* Instruction opcodes for the CPACF instructions
*/
#define CPACF_KMAC 0xb91e /* MSA */
#define CPACF_KM 0xb92e /* MSA */
#define CPACF_KMC 0xb92f /* MSA */
#define CPACF_KIMD 0xb93e /* MSA */
#define CPACF_KLMD 0xb93f /* MSA */
#define CPACF_PCC 0xb92c /* MSA4 */
#define CPACF_KMCTR 0xb92d /* MSA4 */
#define CPACF_PPNO 0xb93c /* MSA5 */
/*
* Function codes for the KM (CIPHER MESSAGE)
* instruction (0x80 is the decipher modifier bit)
*/
#define CPACF_KM_QUERY 0x00
#define CPACF_KM_DEA_ENC 0x01
#define CPACF_KM_DEA_DEC 0x81
#define CPACF_KM_TDEA_128_ENC 0x02
#define CPACF_KM_TDEA_128_DEC 0x82
#define CPACF_KM_TDEA_192_ENC 0x03
#define CPACF_KM_TDEA_192_DEC 0x83
#define CPACF_KM_AES_128_ENC 0x12
#define CPACF_KM_AES_128_DEC 0x92
#define CPACF_KM_AES_192_ENC 0x13
#define CPACF_KM_AES_192_DEC 0x93
#define CPACF_KM_AES_256_ENC 0x14
#define CPACF_KM_AES_256_DEC 0x94
#define CPACF_KM_XTS_128_ENC 0x32
#define CPACF_KM_XTS_128_DEC 0xb2
#define CPACF_KM_XTS_256_ENC 0x34
#define CPACF_KM_XTS_256_DEC 0xb4
/*
* Function codes for the KMC (CIPHER MESSAGE WITH CHAINING)
* instruction (0x80 is the decipher modifier bit)
*/
#define CPACF_KMC_QUERY 0x00
#define CPACF_KMC_DEA_ENC 0x01
#define CPACF_KMC_DEA_DEC 0x81
#define CPACF_KMC_TDEA_128_ENC 0x02
#define CPACF_KMC_TDEA_128_DEC 0x82
#define CPACF_KMC_TDEA_192_ENC 0x03
#define CPACF_KMC_TDEA_192_DEC 0x83
#define CPACF_KMC_AES_128_ENC 0x12
#define CPACF_KMC_AES_128_DEC 0x92
#define CPACF_KMC_AES_192_ENC 0x13
#define CPACF_KMC_AES_192_DEC 0x93
#define CPACF_KMC_AES_256_ENC 0x14
#define CPACF_KMC_AES_256_DEC 0x94
#define CPACF_KMC_PRNG 0x43
/*
* Function codes for the KMCTR (CIPHER MESSAGE WITH COUNTER)
* instruction (0x80 is the decipher modifier bit)
*/
#define CPACF_KMCTR_QUERY 0x00
#define CPACF_KMCTR_DEA_ENC 0x01
#define CPACF_KMCTR_DEA_DEC 0x81
#define CPACF_KMCTR_TDEA_128_ENC 0x02
#define CPACF_KMCTR_TDEA_128_DEC 0x82
#define CPACF_KMCTR_TDEA_192_ENC 0x03
#define CPACF_KMCTR_TDEA_192_DEC 0x83
#define CPACF_KMCTR_AES_128_ENC 0x12
#define CPACF_KMCTR_AES_128_DEC 0x92
#define CPACF_KMCTR_AES_192_ENC 0x13
#define CPACF_KMCTR_AES_192_DEC 0x93
#define CPACF_KMCTR_AES_256_ENC 0x14
#define CPACF_KMCTR_AES_256_DEC 0x94
/*
* Function codes for the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST)
* instruction (0x80 is the decipher modifier bit)
*/
#define CPACF_KIMD_QUERY 0x00
#define CPACF_KIMD_SHA_1 0x01
#define CPACF_KIMD_SHA_256 0x02
#define CPACF_KIMD_SHA_512 0x03
#define CPACF_KIMD_GHASH 0x41
/*
* Function codes for the KLMD (COMPUTE LAST MESSAGE DIGEST)
* instruction (0x80 is the decipher modifier bit)
*/
#define CPACF_KLMD_QUERY 0x00
#define CPACF_KLMD_SHA_1 0x01
#define CPACF_KLMD_SHA_256 0x02
#define CPACF_KLMD_SHA_512 0x03
/*
* function codes for the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE)
* instruction (0x80 is the decipher modifier bit)
*/
#define CPACF_KMAC_QUERY 0x00
#define CPACF_KMAC_DEA 0x01
#define CPACF_KMAC_TDEA_128 0x02
#define CPACF_KMAC_TDEA_192 0x03
/*
* Function codes for the PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION)
* instruction (0x80 is the decipher modifier bit)
*/
#define CPACF_PPNO_QUERY 0x00
#define CPACF_PPNO_SHA512_DRNG_GEN 0x03
#define CPACF_PPNO_SHA512_DRNG_SEED 0x83
/**
* cpacf_query() - check if a specific CPACF function is available
* @opcode: the opcode of the crypto instruction
* @func: the function code to test for
*
* Executes the query function for the given crypto instruction @opcode
* and checks if @func is available
*
* Returns 1 if @func is available for @opcode, 0 otherwise
*/
static inline void __cpacf_query(unsigned int opcode, unsigned char *status)
{
typedef struct { unsigned char _[16]; } status_type;
register unsigned long r0 asm("0") = 0; /* query function */
register unsigned long r1 asm("1") = (unsigned long) status;
asm volatile(
/* Parameter registers are ignored, but may not be 0 */
"0: .insn rrf,%[opc] << 16,2,2,2,0\n"
" brc 1,0b\n" /* handle partial completion */
: "=m" (*(status_type *) status)
: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (opcode)
: "cc");
}
static inline int cpacf_query(unsigned int opcode, unsigned int func)
{
unsigned char status[16];
switch (opcode) {
case CPACF_KMAC:
case CPACF_KM:
case CPACF_KMC:
case CPACF_KIMD:
case CPACF_KLMD:
if (!test_facility(17)) /* check for MSA */
return 0;
break;
case CPACF_PCC:
case CPACF_KMCTR:
if (!test_facility(77)) /* check for MSA4 */
return 0;
break;
case CPACF_PPNO:
if (!test_facility(57)) /* check for MSA5 */
return 0;
break;
default:
BUG();
}
__cpacf_query(opcode, status);
return (status[func >> 3] & (0x80 >> (func & 7))) != 0;
}
/**
* cpacf_km() - executes the KM (CIPHER MESSAGE) instruction
* @func: the function code passed to KM; see CPACF_KM_xxx defines
* @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
*
* Returns 0 for the query func, number of processed bytes for
* encryption/decryption funcs
*/
static inline int cpacf_km(long func, void *param,
u8 *dest, const u8 *src, long src_len)
{
register unsigned long r0 asm("0") = (unsigned long) func;
register unsigned long r1 asm("1") = (unsigned long) param;
register unsigned long r2 asm("2") = (unsigned long) src;
register unsigned long r3 asm("3") = (unsigned long) src_len;
register unsigned long r4 asm("4") = (unsigned long) dest;
asm volatile(
"0: .insn rre,%[opc] << 16,%[dst],%[src]\n"
" brc 1,0b\n" /* handle partial completion */
: [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4)
: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KM)
: "cc", "memory");
return src_len - r3;
}
/**
* cpacf_kmc() - executes the KMC (CIPHER MESSAGE WITH CHAINING) instruction
* @func: the function code passed to KM; see CPACF_KMC_xxx defines
* @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
*
* Returns 0 for the query func, number of processed bytes for
* encryption/decryption funcs
*/
static inline int cpacf_kmc(long func, void *param,
u8 *dest, const u8 *src, long src_len)
{
register unsigned long r0 asm("0") = (unsigned long) func;
register unsigned long r1 asm("1") = (unsigned long) param;
register unsigned long r2 asm("2") = (unsigned long) src;
register unsigned long r3 asm("3") = (unsigned long) src_len;
register unsigned long r4 asm("4") = (unsigned long) dest;
asm volatile(
"0: .insn rre,%[opc] << 16,%[dst],%[src]\n"
" brc 1,0b\n" /* handle partial completion */
: [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4)
: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMC)
: "cc", "memory");
return src_len - r3;
}
/**
* cpacf_kimd() - executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST)
* instruction
* @func: the function code passed to KM; see CPACF_KIMD_xxx defines
* @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
*
* Returns 0 for the query func, number of processed bytes for digest funcs
*/
static inline int cpacf_kimd(long func, void *param,
const u8 *src, long src_len)
{
register unsigned long r0 asm("0") = (unsigned long) func;
register unsigned long r1 asm("1") = (unsigned long) param;
register unsigned long r2 asm("2") = (unsigned long) src;
register unsigned long r3 asm("3") = (unsigned long) src_len;
asm volatile(
"0: .insn rre,%[opc] << 16,0,%[src]\n"
" brc 1,0b\n" /* handle partial completion */
: [src] "+a" (r2), [len] "+d" (r3)
: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KIMD)
: "cc", "memory");
return src_len - r3;
}
/**
* cpacf_klmd() - executes the KLMD (COMPUTE LAST MESSAGE DIGEST) instruction
* @func: the function code passed to KM; see CPACF_KLMD_xxx defines
* @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
*
* Returns 0 for the query func, number of processed bytes for digest funcs
*/
static inline int cpacf_klmd(long func, void *param,
const u8 *src, long src_len)
{
register unsigned long r0 asm("0") = (unsigned long) func;
register unsigned long r1 asm("1") = (unsigned long) param;
register unsigned long r2 asm("2") = (unsigned long) src;
register unsigned long r3 asm("3") = (unsigned long) src_len;
asm volatile(
"0: .insn rre,%[opc] << 16,0,%[src]\n"
" brc 1,0b\n" /* handle partial completion */
: [src] "+a" (r2), [len] "+d" (r3)
: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KLMD)
: "cc", "memory");
return src_len - r3;
}
/**
* cpacf_kmac() - executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE)
* instruction
* @func: the function code passed to KM; see CPACF_KMAC_xxx defines
* @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
*
* Returns 0 for the query func, number of processed bytes for digest funcs
*/
static inline int cpacf_kmac(long func, void *param,
const u8 *src, long src_len)
{
register unsigned long r0 asm("0") = (unsigned long) func;
register unsigned long r1 asm("1") = (unsigned long) param;
register unsigned long r2 asm("2") = (unsigned long) src;
register unsigned long r3 asm("3") = (unsigned long) src_len;
asm volatile(
"0: .insn rre,%[opc] << 16,0,%[src]\n"
" brc 1,0b\n" /* handle partial completion */
: [src] "+a" (r2), [len] "+d" (r3)
: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMAC)
: "cc", "memory");
return src_len - r3;
}
/**
* cpacf_kmctr() - executes the KMCTR (CIPHER MESSAGE WITH COUNTER) instruction
* @func: the function code passed to KMCTR; see CPACF_KMCTR_xxx defines
* @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
* @counter: address of counter value
*
* Returns 0 for the query func, number of processed bytes for
* encryption/decryption funcs
*/
static inline int cpacf_kmctr(long func, void *param, u8 *dest,
const u8 *src, long src_len, u8 *counter)
{
register unsigned long r0 asm("0") = (unsigned long) func;
register unsigned long r1 asm("1") = (unsigned long) param;
register unsigned long r2 asm("2") = (unsigned long) src;
register unsigned long r3 asm("3") = (unsigned long) src_len;
register unsigned long r4 asm("4") = (unsigned long) dest;
register unsigned long r6 asm("6") = (unsigned long) counter;
asm volatile(
"0: .insn rrf,%[opc] << 16,%[dst],%[src],%[ctr],0\n"
" brc 1,0b\n" /* handle partial completion */
: [src] "+a" (r2), [len] "+d" (r3),
[dst] "+a" (r4), [ctr] "+a" (r6)
: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMCTR)
: "cc", "memory");
return src_len - r3;
}
/**
* cpacf_ppno() - executes the PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION)
* instruction
* @func: the function code passed to PPNO; see CPACF_PPNO_xxx defines
* @param: address of parameter block; see POP for details on each func
* @dest: address of destination memory area
* @dest_len: size of destination memory area in bytes
* @seed: address of seed data
* @seed_len: size of seed data in bytes
*
* Returns 0 for the query func, number of random bytes stored in
* dest buffer for generate function
*/
static inline int cpacf_ppno(long func, void *param,
u8 *dest, long dest_len,
const u8 *seed, long seed_len)
{
register unsigned long r0 asm("0") = (unsigned long) func;
register unsigned long r1 asm("1") = (unsigned long) param;
register unsigned long r2 asm("2") = (unsigned long) dest;
register unsigned long r3 asm("3") = (unsigned long) dest_len;
register unsigned long r4 asm("4") = (unsigned long) seed;
register unsigned long r5 asm("5") = (unsigned long) seed_len;
asm volatile (
"0: .insn rre,%[opc] << 16,%[dst],%[seed]\n"
" brc 1,0b\n" /* handle partial completion */
: [dst] "+a" (r2), [dlen] "+d" (r3)
: [fc] "d" (r0), [pba] "a" (r1),
[seed] "a" (r4), [slen] "d" (r5), [opc] "i" (CPACF_PPNO)
: "cc", "memory");
return dest_len - r3;
}
/**
* cpacf_pcc() - executes the PCC (PERFORM CRYPTOGRAPHIC COMPUTATION)
* instruction
* @func: the function code passed to PCC; see CPACF_KM_xxx defines
* @param: address of parameter block; see POP for details on each func
*
* Returns 0.
*/
static inline int cpacf_pcc(long func, void *param)
{
register unsigned long r0 asm("0") = (unsigned long) func;
register unsigned long r1 asm("1") = (unsigned long) param;
asm volatile(
"0: .insn rre,%[opc] << 16,0,0\n" /* PCC opcode */
" brc 1,0b\n" /* handle partial completion */
:
: [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_PCC)
: "cc", "memory");
return 0;
}
#endif /* _ASM_S390_CPACF_H */
|
