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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
c7d4d259 MS |
2 | /* |
3 | * CP Assist for Cryptographic Functions (CPACF) | |
4 | * | |
5 | * Copyright IBM Corp. 2003, 2016 | |
6 | * Author(s): Thomas Spatzier | |
7 | * Jan Glauber | |
8 | * Harald Freudenberger (freude@de.ibm.com) | |
9 | * Martin Schwidefsky <schwidefsky@de.ibm.com> | |
10 | */ | |
11 | #ifndef _ASM_S390_CPACF_H | |
12 | #define _ASM_S390_CPACF_H | |
13 | ||
14 | #include <asm/facility.h> | |
15 | ||
16 | /* | |
17 | * Instruction opcodes for the CPACF instructions | |
18 | */ | |
19 | #define CPACF_KMAC 0xb91e /* MSA */ | |
20 | #define CPACF_KM 0xb92e /* MSA */ | |
21 | #define CPACF_KMC 0xb92f /* MSA */ | |
22 | #define CPACF_KIMD 0xb93e /* MSA */ | |
23 | #define CPACF_KLMD 0xb93f /* MSA */ | |
1afd43e0 DH |
24 | #define CPACF_PCKMO 0xb928 /* MSA3 */ |
25 | #define CPACF_KMF 0xb92a /* MSA4 */ | |
26 | #define CPACF_KMO 0xb92b /* MSA4 */ | |
c7d4d259 MS |
27 | #define CPACF_PCC 0xb92c /* MSA4 */ |
28 | #define CPACF_KMCTR 0xb92d /* MSA4 */ | |
985a9d20 | 29 | #define CPACF_PRNO 0xb93c /* MSA5 */ |
152c1c8d | 30 | #define CPACF_KMA 0xb929 /* MSA8 */ |
c7d4d259 MS |
31 | |
32 | /* | |
27937843 | 33 | * En/decryption modifier bits |
edc63a37 | 34 | */ |
27937843 | 35 | #define CPACF_ENCRYPT 0x00 |
edc63a37 MS |
36 | #define CPACF_DECRYPT 0x80 |
37 | ||
38 | /* | |
39 | * Function codes for the KM (CIPHER MESSAGE) instruction | |
c7d4d259 MS |
40 | */ |
41 | #define CPACF_KM_QUERY 0x00 | |
edc63a37 MS |
42 | #define CPACF_KM_DEA 0x01 |
43 | #define CPACF_KM_TDEA_128 0x02 | |
44 | #define CPACF_KM_TDEA_192 0x03 | |
45 | #define CPACF_KM_AES_128 0x12 | |
46 | #define CPACF_KM_AES_192 0x13 | |
47 | #define CPACF_KM_AES_256 0x14 | |
27937843 MS |
48 | #define CPACF_KM_PAES_128 0x1a |
49 | #define CPACF_KM_PAES_192 0x1b | |
50 | #define CPACF_KM_PAES_256 0x1c | |
edc63a37 MS |
51 | #define CPACF_KM_XTS_128 0x32 |
52 | #define CPACF_KM_XTS_256 0x34 | |
27937843 MS |
53 | #define CPACF_KM_PXTS_128 0x3a |
54 | #define CPACF_KM_PXTS_256 0x3c | |
c7d4d259 MS |
55 | |
56 | /* | |
57 | * Function codes for the KMC (CIPHER MESSAGE WITH CHAINING) | |
edc63a37 | 58 | * instruction |
c7d4d259 MS |
59 | */ |
60 | #define CPACF_KMC_QUERY 0x00 | |
edc63a37 MS |
61 | #define CPACF_KMC_DEA 0x01 |
62 | #define CPACF_KMC_TDEA_128 0x02 | |
63 | #define CPACF_KMC_TDEA_192 0x03 | |
64 | #define CPACF_KMC_AES_128 0x12 | |
65 | #define CPACF_KMC_AES_192 0x13 | |
66 | #define CPACF_KMC_AES_256 0x14 | |
27937843 MS |
67 | #define CPACF_KMC_PAES_128 0x1a |
68 | #define CPACF_KMC_PAES_192 0x1b | |
69 | #define CPACF_KMC_PAES_256 0x1c | |
c7d4d259 MS |
70 | #define CPACF_KMC_PRNG 0x43 |
71 | ||
72 | /* | |
73 | * Function codes for the KMCTR (CIPHER MESSAGE WITH COUNTER) | |
edc63a37 | 74 | * instruction |
c7d4d259 | 75 | */ |
edc63a37 MS |
76 | #define CPACF_KMCTR_QUERY 0x00 |
77 | #define CPACF_KMCTR_DEA 0x01 | |
78 | #define CPACF_KMCTR_TDEA_128 0x02 | |
79 | #define CPACF_KMCTR_TDEA_192 0x03 | |
80 | #define CPACF_KMCTR_AES_128 0x12 | |
81 | #define CPACF_KMCTR_AES_192 0x13 | |
82 | #define CPACF_KMCTR_AES_256 0x14 | |
27937843 MS |
83 | #define CPACF_KMCTR_PAES_128 0x1a |
84 | #define CPACF_KMCTR_PAES_192 0x1b | |
85 | #define CPACF_KMCTR_PAES_256 0x1c | |
c7d4d259 MS |
86 | |
87 | /* | |
88 | * Function codes for the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) | |
edc63a37 | 89 | * instruction |
c7d4d259 MS |
90 | */ |
91 | #define CPACF_KIMD_QUERY 0x00 | |
92 | #define CPACF_KIMD_SHA_1 0x01 | |
93 | #define CPACF_KIMD_SHA_256 0x02 | |
94 | #define CPACF_KIMD_SHA_512 0x03 | |
95 | #define CPACF_KIMD_GHASH 0x41 | |
96 | ||
97 | /* | |
98 | * Function codes for the KLMD (COMPUTE LAST MESSAGE DIGEST) | |
edc63a37 | 99 | * instruction |
c7d4d259 MS |
100 | */ |
101 | #define CPACF_KLMD_QUERY 0x00 | |
102 | #define CPACF_KLMD_SHA_1 0x01 | |
103 | #define CPACF_KLMD_SHA_256 0x02 | |
104 | #define CPACF_KLMD_SHA_512 0x03 | |
105 | ||
106 | /* | |
107 | * function codes for the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) | |
edc63a37 | 108 | * instruction |
c7d4d259 MS |
109 | */ |
110 | #define CPACF_KMAC_QUERY 0x00 | |
111 | #define CPACF_KMAC_DEA 0x01 | |
112 | #define CPACF_KMAC_TDEA_128 0x02 | |
113 | #define CPACF_KMAC_TDEA_192 0x03 | |
114 | ||
77606708 HF |
115 | /* |
116 | * Function codes for the PCKMO (PERFORM CRYPTOGRAPHIC KEY MANAGEMENT) | |
117 | * instruction | |
118 | */ | |
119 | #define CPACF_PCKMO_QUERY 0x00 | |
120 | #define CPACF_PCKMO_ENC_DES_KEY 0x01 | |
121 | #define CPACF_PCKMO_ENC_TDES_128_KEY 0x02 | |
122 | #define CPACF_PCKMO_ENC_TDES_192_KEY 0x03 | |
123 | #define CPACF_PCKMO_ENC_AES_128_KEY 0x12 | |
124 | #define CPACF_PCKMO_ENC_AES_192_KEY 0x13 | |
125 | #define CPACF_PCKMO_ENC_AES_256_KEY 0x14 | |
126 | ||
c7d4d259 | 127 | /* |
985a9d20 | 128 | * Function codes for the PRNO (PERFORM RANDOM NUMBER OPERATION) |
edc63a37 | 129 | * instruction |
c7d4d259 | 130 | */ |
985a9d20 HF |
131 | #define CPACF_PRNO_QUERY 0x00 |
132 | #define CPACF_PRNO_SHA512_DRNG_GEN 0x03 | |
133 | #define CPACF_PRNO_SHA512_DRNG_SEED 0x83 | |
f75fa65d HF |
134 | #define CPACF_PRNO_TRNG_Q_R2C_RATIO 0x70 |
135 | #define CPACF_PRNO_TRNG 0x72 | |
c7d4d259 | 136 | |
69c0e360 MS |
137 | typedef struct { unsigned char bytes[16]; } cpacf_mask_t; |
138 | ||
c7d4d259 MS |
139 | /** |
140 | * cpacf_query() - check if a specific CPACF function is available | |
141 | * @opcode: the opcode of the crypto instruction | |
142 | * @func: the function code to test for | |
143 | * | |
144 | * Executes the query function for the given crypto instruction @opcode | |
145 | * and checks if @func is available | |
146 | * | |
147 | * Returns 1 if @func is available for @opcode, 0 otherwise | |
148 | */ | |
69c0e360 | 149 | static inline void __cpacf_query(unsigned int opcode, cpacf_mask_t *mask) |
c7d4d259 | 150 | { |
c7d4d259 | 151 | register unsigned long r0 asm("0") = 0; /* query function */ |
69c0e360 | 152 | register unsigned long r1 asm("1") = (unsigned long) mask; |
c7d4d259 MS |
153 | |
154 | asm volatile( | |
1afd43e0 | 155 | " spm 0\n" /* pckmo doesn't change the cc */ |
b112a2df JH |
156 | /* Parameter regs are ignored, but must be nonzero and unique */ |
157 | "0: .insn rrf,%[opc] << 16,2,4,6,0\n" | |
c7d4d259 | 158 | " brc 1,0b\n" /* handle partial completion */ |
69c0e360 | 159 | : "=m" (*mask) |
c7d4d259 MS |
160 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (opcode) |
161 | : "cc"); | |
162 | } | |
163 | ||
69c0e360 | 164 | static inline int __cpacf_check_opcode(unsigned int opcode) |
c7d4d259 | 165 | { |
c7d4d259 MS |
166 | switch (opcode) { |
167 | case CPACF_KMAC: | |
168 | case CPACF_KM: | |
169 | case CPACF_KMC: | |
170 | case CPACF_KIMD: | |
171 | case CPACF_KLMD: | |
69c0e360 | 172 | return test_facility(17); /* check for MSA */ |
1afd43e0 | 173 | case CPACF_PCKMO: |
69c0e360 | 174 | return test_facility(76); /* check for MSA3 */ |
1afd43e0 DH |
175 | case CPACF_KMF: |
176 | case CPACF_KMO: | |
c7d4d259 MS |
177 | case CPACF_PCC: |
178 | case CPACF_KMCTR: | |
69c0e360 | 179 | return test_facility(77); /* check for MSA4 */ |
985a9d20 | 180 | case CPACF_PRNO: |
69c0e360 | 181 | return test_facility(57); /* check for MSA5 */ |
c7d4d259 MS |
182 | default: |
183 | BUG(); | |
184 | } | |
69c0e360 MS |
185 | } |
186 | ||
187 | static inline int cpacf_query(unsigned int opcode, cpacf_mask_t *mask) | |
188 | { | |
189 | if (__cpacf_check_opcode(opcode)) { | |
190 | __cpacf_query(opcode, mask); | |
191 | return 1; | |
192 | } | |
193 | memset(mask, 0, sizeof(*mask)); | |
194 | return 0; | |
195 | } | |
196 | ||
197 | static inline int cpacf_test_func(cpacf_mask_t *mask, unsigned int func) | |
198 | { | |
199 | return (mask->bytes[func >> 3] & (0x80 >> (func & 7))) != 0; | |
200 | } | |
201 | ||
202 | static inline int cpacf_query_func(unsigned int opcode, unsigned int func) | |
203 | { | |
204 | cpacf_mask_t mask; | |
205 | ||
206 | if (cpacf_query(opcode, &mask)) | |
207 | return cpacf_test_func(&mask, func); | |
208 | return 0; | |
c7d4d259 MS |
209 | } |
210 | ||
211 | /** | |
212 | * cpacf_km() - executes the KM (CIPHER MESSAGE) instruction | |
213 | * @func: the function code passed to KM; see CPACF_KM_xxx defines | |
214 | * @param: address of parameter block; see POP for details on each func | |
215 | * @dest: address of destination memory area | |
216 | * @src: address of source memory area | |
217 | * @src_len: length of src operand in bytes | |
218 | * | |
219 | * Returns 0 for the query func, number of processed bytes for | |
220 | * encryption/decryption funcs | |
221 | */ | |
edc63a37 | 222 | static inline int cpacf_km(unsigned long func, void *param, |
c7d4d259 MS |
223 | u8 *dest, const u8 *src, long src_len) |
224 | { | |
225 | register unsigned long r0 asm("0") = (unsigned long) func; | |
226 | register unsigned long r1 asm("1") = (unsigned long) param; | |
227 | register unsigned long r2 asm("2") = (unsigned long) src; | |
228 | register unsigned long r3 asm("3") = (unsigned long) src_len; | |
229 | register unsigned long r4 asm("4") = (unsigned long) dest; | |
230 | ||
231 | asm volatile( | |
232 | "0: .insn rre,%[opc] << 16,%[dst],%[src]\n" | |
233 | " brc 1,0b\n" /* handle partial completion */ | |
234 | : [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4) | |
235 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KM) | |
236 | : "cc", "memory"); | |
237 | ||
238 | return src_len - r3; | |
239 | } | |
240 | ||
241 | /** | |
242 | * cpacf_kmc() - executes the KMC (CIPHER MESSAGE WITH CHAINING) instruction | |
243 | * @func: the function code passed to KM; see CPACF_KMC_xxx defines | |
244 | * @param: address of parameter block; see POP for details on each func | |
245 | * @dest: address of destination memory area | |
246 | * @src: address of source memory area | |
247 | * @src_len: length of src operand in bytes | |
248 | * | |
249 | * Returns 0 for the query func, number of processed bytes for | |
250 | * encryption/decryption funcs | |
251 | */ | |
edc63a37 | 252 | static inline int cpacf_kmc(unsigned long func, void *param, |
c7d4d259 MS |
253 | u8 *dest, const u8 *src, long src_len) |
254 | { | |
255 | register unsigned long r0 asm("0") = (unsigned long) func; | |
256 | register unsigned long r1 asm("1") = (unsigned long) param; | |
257 | register unsigned long r2 asm("2") = (unsigned long) src; | |
258 | register unsigned long r3 asm("3") = (unsigned long) src_len; | |
259 | register unsigned long r4 asm("4") = (unsigned long) dest; | |
260 | ||
261 | asm volatile( | |
262 | "0: .insn rre,%[opc] << 16,%[dst],%[src]\n" | |
263 | " brc 1,0b\n" /* handle partial completion */ | |
264 | : [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4) | |
265 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMC) | |
266 | : "cc", "memory"); | |
267 | ||
268 | return src_len - r3; | |
269 | } | |
270 | ||
271 | /** | |
272 | * cpacf_kimd() - executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) | |
273 | * instruction | |
274 | * @func: the function code passed to KM; see CPACF_KIMD_xxx defines | |
275 | * @param: address of parameter block; see POP for details on each func | |
276 | * @src: address of source memory area | |
277 | * @src_len: length of src operand in bytes | |
c7d4d259 | 278 | */ |
0177db01 MS |
279 | static inline void cpacf_kimd(unsigned long func, void *param, |
280 | const u8 *src, long src_len) | |
c7d4d259 MS |
281 | { |
282 | register unsigned long r0 asm("0") = (unsigned long) func; | |
283 | register unsigned long r1 asm("1") = (unsigned long) param; | |
284 | register unsigned long r2 asm("2") = (unsigned long) src; | |
285 | register unsigned long r3 asm("3") = (unsigned long) src_len; | |
286 | ||
287 | asm volatile( | |
288 | "0: .insn rre,%[opc] << 16,0,%[src]\n" | |
289 | " brc 1,0b\n" /* handle partial completion */ | |
290 | : [src] "+a" (r2), [len] "+d" (r3) | |
291 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KIMD) | |
292 | : "cc", "memory"); | |
c7d4d259 MS |
293 | } |
294 | ||
295 | /** | |
296 | * cpacf_klmd() - executes the KLMD (COMPUTE LAST MESSAGE DIGEST) instruction | |
297 | * @func: the function code passed to KM; see CPACF_KLMD_xxx defines | |
298 | * @param: address of parameter block; see POP for details on each func | |
299 | * @src: address of source memory area | |
300 | * @src_len: length of src operand in bytes | |
c7d4d259 | 301 | */ |
0177db01 MS |
302 | static inline void cpacf_klmd(unsigned long func, void *param, |
303 | const u8 *src, long src_len) | |
c7d4d259 MS |
304 | { |
305 | register unsigned long r0 asm("0") = (unsigned long) func; | |
306 | register unsigned long r1 asm("1") = (unsigned long) param; | |
307 | register unsigned long r2 asm("2") = (unsigned long) src; | |
308 | register unsigned long r3 asm("3") = (unsigned long) src_len; | |
309 | ||
310 | asm volatile( | |
311 | "0: .insn rre,%[opc] << 16,0,%[src]\n" | |
312 | " brc 1,0b\n" /* handle partial completion */ | |
313 | : [src] "+a" (r2), [len] "+d" (r3) | |
314 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KLMD) | |
315 | : "cc", "memory"); | |
c7d4d259 MS |
316 | } |
317 | ||
318 | /** | |
319 | * cpacf_kmac() - executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) | |
320 | * instruction | |
321 | * @func: the function code passed to KM; see CPACF_KMAC_xxx defines | |
322 | * @param: address of parameter block; see POP for details on each func | |
323 | * @src: address of source memory area | |
324 | * @src_len: length of src operand in bytes | |
325 | * | |
326 | * Returns 0 for the query func, number of processed bytes for digest funcs | |
327 | */ | |
edc63a37 | 328 | static inline int cpacf_kmac(unsigned long func, void *param, |
c7d4d259 MS |
329 | const u8 *src, long src_len) |
330 | { | |
331 | register unsigned long r0 asm("0") = (unsigned long) func; | |
332 | register unsigned long r1 asm("1") = (unsigned long) param; | |
333 | register unsigned long r2 asm("2") = (unsigned long) src; | |
334 | register unsigned long r3 asm("3") = (unsigned long) src_len; | |
335 | ||
336 | asm volatile( | |
337 | "0: .insn rre,%[opc] << 16,0,%[src]\n" | |
338 | " brc 1,0b\n" /* handle partial completion */ | |
339 | : [src] "+a" (r2), [len] "+d" (r3) | |
340 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMAC) | |
341 | : "cc", "memory"); | |
342 | ||
343 | return src_len - r3; | |
344 | } | |
345 | ||
346 | /** | |
347 | * cpacf_kmctr() - executes the KMCTR (CIPHER MESSAGE WITH COUNTER) instruction | |
348 | * @func: the function code passed to KMCTR; see CPACF_KMCTR_xxx defines | |
349 | * @param: address of parameter block; see POP for details on each func | |
350 | * @dest: address of destination memory area | |
351 | * @src: address of source memory area | |
352 | * @src_len: length of src operand in bytes | |
353 | * @counter: address of counter value | |
354 | * | |
355 | * Returns 0 for the query func, number of processed bytes for | |
356 | * encryption/decryption funcs | |
357 | */ | |
edc63a37 | 358 | static inline int cpacf_kmctr(unsigned long func, void *param, u8 *dest, |
c7d4d259 MS |
359 | const u8 *src, long src_len, u8 *counter) |
360 | { | |
361 | register unsigned long r0 asm("0") = (unsigned long) func; | |
362 | register unsigned long r1 asm("1") = (unsigned long) param; | |
363 | register unsigned long r2 asm("2") = (unsigned long) src; | |
364 | register unsigned long r3 asm("3") = (unsigned long) src_len; | |
365 | register unsigned long r4 asm("4") = (unsigned long) dest; | |
366 | register unsigned long r6 asm("6") = (unsigned long) counter; | |
367 | ||
368 | asm volatile( | |
369 | "0: .insn rrf,%[opc] << 16,%[dst],%[src],%[ctr],0\n" | |
370 | " brc 1,0b\n" /* handle partial completion */ | |
371 | : [src] "+a" (r2), [len] "+d" (r3), | |
372 | [dst] "+a" (r4), [ctr] "+a" (r6) | |
373 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMCTR) | |
374 | : "cc", "memory"); | |
375 | ||
376 | return src_len - r3; | |
377 | } | |
378 | ||
379 | /** | |
985a9d20 | 380 | * cpacf_prno() - executes the PRNO (PERFORM RANDOM NUMBER OPERATION) |
c7d4d259 | 381 | * instruction |
985a9d20 | 382 | * @func: the function code passed to PRNO; see CPACF_PRNO_xxx defines |
c7d4d259 MS |
383 | * @param: address of parameter block; see POP for details on each func |
384 | * @dest: address of destination memory area | |
385 | * @dest_len: size of destination memory area in bytes | |
386 | * @seed: address of seed data | |
387 | * @seed_len: size of seed data in bytes | |
c7d4d259 | 388 | */ |
985a9d20 | 389 | static inline void cpacf_prno(unsigned long func, void *param, |
f75fa65d HF |
390 | u8 *dest, unsigned long dest_len, |
391 | const u8 *seed, unsigned long seed_len) | |
c7d4d259 MS |
392 | { |
393 | register unsigned long r0 asm("0") = (unsigned long) func; | |
394 | register unsigned long r1 asm("1") = (unsigned long) param; | |
395 | register unsigned long r2 asm("2") = (unsigned long) dest; | |
396 | register unsigned long r3 asm("3") = (unsigned long) dest_len; | |
397 | register unsigned long r4 asm("4") = (unsigned long) seed; | |
398 | register unsigned long r5 asm("5") = (unsigned long) seed_len; | |
399 | ||
400 | asm volatile ( | |
401 | "0: .insn rre,%[opc] << 16,%[dst],%[seed]\n" | |
402 | " brc 1,0b\n" /* handle partial completion */ | |
403 | : [dst] "+a" (r2), [dlen] "+d" (r3) | |
404 | : [fc] "d" (r0), [pba] "a" (r1), | |
985a9d20 | 405 | [seed] "a" (r4), [slen] "d" (r5), [opc] "i" (CPACF_PRNO) |
c7d4d259 | 406 | : "cc", "memory"); |
c7d4d259 MS |
407 | } |
408 | ||
f75fa65d HF |
409 | /** |
410 | * cpacf_trng() - executes the TRNG subfunction of the PRNO instruction | |
411 | * @ucbuf: buffer for unconditioned data | |
412 | * @ucbuf_len: amount of unconditioned data to fetch in bytes | |
413 | * @cbuf: buffer for conditioned data | |
414 | * @cbuf_len: amount of conditioned data to fetch in bytes | |
415 | */ | |
416 | static inline void cpacf_trng(u8 *ucbuf, unsigned long ucbuf_len, | |
417 | u8 *cbuf, unsigned long cbuf_len) | |
418 | { | |
419 | register unsigned long r0 asm("0") = (unsigned long) CPACF_PRNO_TRNG; | |
420 | register unsigned long r2 asm("2") = (unsigned long) ucbuf; | |
421 | register unsigned long r3 asm("3") = (unsigned long) ucbuf_len; | |
422 | register unsigned long r4 asm("4") = (unsigned long) cbuf; | |
423 | register unsigned long r5 asm("5") = (unsigned long) cbuf_len; | |
424 | ||
425 | asm volatile ( | |
426 | "0: .insn rre,%[opc] << 16,%[ucbuf],%[cbuf]\n" | |
427 | " brc 1,0b\n" /* handle partial completion */ | |
428 | : [ucbuf] "+a" (r2), [ucbuflen] "+d" (r3), | |
429 | [cbuf] "+a" (r4), [cbuflen] "+d" (r5) | |
430 | : [fc] "d" (r0), [opc] "i" (CPACF_PRNO) | |
431 | : "cc", "memory"); | |
432 | } | |
433 | ||
c7d4d259 MS |
434 | /** |
435 | * cpacf_pcc() - executes the PCC (PERFORM CRYPTOGRAPHIC COMPUTATION) | |
436 | * instruction | |
437 | * @func: the function code passed to PCC; see CPACF_KM_xxx defines | |
438 | * @param: address of parameter block; see POP for details on each func | |
c7d4d259 | 439 | */ |
0177db01 | 440 | static inline void cpacf_pcc(unsigned long func, void *param) |
c7d4d259 MS |
441 | { |
442 | register unsigned long r0 asm("0") = (unsigned long) func; | |
443 | register unsigned long r1 asm("1") = (unsigned long) param; | |
444 | ||
445 | asm volatile( | |
446 | "0: .insn rre,%[opc] << 16,0,0\n" /* PCC opcode */ | |
447 | " brc 1,0b\n" /* handle partial completion */ | |
448 | : | |
449 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_PCC) | |
450 | : "cc", "memory"); | |
c7d4d259 MS |
451 | } |
452 | ||
77606708 HF |
453 | /** |
454 | * cpacf_pckmo() - executes the PCKMO (PERFORM CRYPTOGRAPHIC KEY | |
455 | * MANAGEMENT) instruction | |
456 | * @func: the function code passed to PCKMO; see CPACF_PCKMO_xxx defines | |
457 | * @param: address of parameter block; see POP for details on each func | |
458 | * | |
459 | * Returns 0. | |
460 | */ | |
461 | static inline void cpacf_pckmo(long func, void *param) | |
462 | { | |
463 | register unsigned long r0 asm("0") = (unsigned long) func; | |
464 | register unsigned long r1 asm("1") = (unsigned long) param; | |
465 | ||
466 | asm volatile( | |
467 | " .insn rre,%[opc] << 16,0,0\n" /* PCKMO opcode */ | |
468 | : | |
469 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_PCKMO) | |
470 | : "cc", "memory"); | |
471 | } | |
472 | ||
c7d4d259 | 473 | #endif /* _ASM_S390_CPACF_H */ |