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c7d4d259 MS |
1 | /* |
2 | * CP Assist for Cryptographic Functions (CPACF) | |
3 | * | |
4 | * Copyright IBM Corp. 2003, 2016 | |
5 | * Author(s): Thomas Spatzier | |
6 | * Jan Glauber | |
7 | * Harald Freudenberger (freude@de.ibm.com) | |
8 | * Martin Schwidefsky <schwidefsky@de.ibm.com> | |
9 | */ | |
10 | #ifndef _ASM_S390_CPACF_H | |
11 | #define _ASM_S390_CPACF_H | |
12 | ||
13 | #include <asm/facility.h> | |
14 | ||
15 | /* | |
16 | * Instruction opcodes for the CPACF instructions | |
17 | */ | |
18 | #define CPACF_KMAC 0xb91e /* MSA */ | |
19 | #define CPACF_KM 0xb92e /* MSA */ | |
20 | #define CPACF_KMC 0xb92f /* MSA */ | |
21 | #define CPACF_KIMD 0xb93e /* MSA */ | |
22 | #define CPACF_KLMD 0xb93f /* MSA */ | |
1afd43e0 DH |
23 | #define CPACF_PCKMO 0xb928 /* MSA3 */ |
24 | #define CPACF_KMF 0xb92a /* MSA4 */ | |
25 | #define CPACF_KMO 0xb92b /* MSA4 */ | |
c7d4d259 MS |
26 | #define CPACF_PCC 0xb92c /* MSA4 */ |
27 | #define CPACF_KMCTR 0xb92d /* MSA4 */ | |
28 | #define CPACF_PPNO 0xb93c /* MSA5 */ | |
29 | ||
30 | /* | |
31 | * Function codes for the KM (CIPHER MESSAGE) | |
32 | * instruction (0x80 is the decipher modifier bit) | |
33 | */ | |
34 | #define CPACF_KM_QUERY 0x00 | |
35 | #define CPACF_KM_DEA_ENC 0x01 | |
36 | #define CPACF_KM_DEA_DEC 0x81 | |
37 | #define CPACF_KM_TDEA_128_ENC 0x02 | |
38 | #define CPACF_KM_TDEA_128_DEC 0x82 | |
39 | #define CPACF_KM_TDEA_192_ENC 0x03 | |
40 | #define CPACF_KM_TDEA_192_DEC 0x83 | |
41 | #define CPACF_KM_AES_128_ENC 0x12 | |
42 | #define CPACF_KM_AES_128_DEC 0x92 | |
43 | #define CPACF_KM_AES_192_ENC 0x13 | |
44 | #define CPACF_KM_AES_192_DEC 0x93 | |
45 | #define CPACF_KM_AES_256_ENC 0x14 | |
46 | #define CPACF_KM_AES_256_DEC 0x94 | |
47 | #define CPACF_KM_XTS_128_ENC 0x32 | |
48 | #define CPACF_KM_XTS_128_DEC 0xb2 | |
49 | #define CPACF_KM_XTS_256_ENC 0x34 | |
50 | #define CPACF_KM_XTS_256_DEC 0xb4 | |
51 | ||
52 | /* | |
53 | * Function codes for the KMC (CIPHER MESSAGE WITH CHAINING) | |
54 | * instruction (0x80 is the decipher modifier bit) | |
55 | */ | |
56 | #define CPACF_KMC_QUERY 0x00 | |
57 | #define CPACF_KMC_DEA_ENC 0x01 | |
58 | #define CPACF_KMC_DEA_DEC 0x81 | |
59 | #define CPACF_KMC_TDEA_128_ENC 0x02 | |
60 | #define CPACF_KMC_TDEA_128_DEC 0x82 | |
61 | #define CPACF_KMC_TDEA_192_ENC 0x03 | |
62 | #define CPACF_KMC_TDEA_192_DEC 0x83 | |
63 | #define CPACF_KMC_AES_128_ENC 0x12 | |
64 | #define CPACF_KMC_AES_128_DEC 0x92 | |
65 | #define CPACF_KMC_AES_192_ENC 0x13 | |
66 | #define CPACF_KMC_AES_192_DEC 0x93 | |
67 | #define CPACF_KMC_AES_256_ENC 0x14 | |
68 | #define CPACF_KMC_AES_256_DEC 0x94 | |
69 | #define CPACF_KMC_PRNG 0x43 | |
70 | ||
71 | /* | |
72 | * Function codes for the KMCTR (CIPHER MESSAGE WITH COUNTER) | |
73 | * instruction (0x80 is the decipher modifier bit) | |
74 | */ | |
75 | #define CPACF_KMCTR_QUERY 0x00 | |
76 | #define CPACF_KMCTR_DEA_ENC 0x01 | |
77 | #define CPACF_KMCTR_DEA_DEC 0x81 | |
78 | #define CPACF_KMCTR_TDEA_128_ENC 0x02 | |
79 | #define CPACF_KMCTR_TDEA_128_DEC 0x82 | |
80 | #define CPACF_KMCTR_TDEA_192_ENC 0x03 | |
81 | #define CPACF_KMCTR_TDEA_192_DEC 0x83 | |
82 | #define CPACF_KMCTR_AES_128_ENC 0x12 | |
83 | #define CPACF_KMCTR_AES_128_DEC 0x92 | |
84 | #define CPACF_KMCTR_AES_192_ENC 0x13 | |
85 | #define CPACF_KMCTR_AES_192_DEC 0x93 | |
86 | #define CPACF_KMCTR_AES_256_ENC 0x14 | |
87 | #define CPACF_KMCTR_AES_256_DEC 0x94 | |
88 | ||
89 | /* | |
90 | * Function codes for the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) | |
91 | * instruction (0x80 is the decipher modifier bit) | |
92 | */ | |
93 | #define CPACF_KIMD_QUERY 0x00 | |
94 | #define CPACF_KIMD_SHA_1 0x01 | |
95 | #define CPACF_KIMD_SHA_256 0x02 | |
96 | #define CPACF_KIMD_SHA_512 0x03 | |
97 | #define CPACF_KIMD_GHASH 0x41 | |
98 | ||
99 | /* | |
100 | * Function codes for the KLMD (COMPUTE LAST MESSAGE DIGEST) | |
101 | * instruction (0x80 is the decipher modifier bit) | |
102 | */ | |
103 | #define CPACF_KLMD_QUERY 0x00 | |
104 | #define CPACF_KLMD_SHA_1 0x01 | |
105 | #define CPACF_KLMD_SHA_256 0x02 | |
106 | #define CPACF_KLMD_SHA_512 0x03 | |
107 | ||
108 | /* | |
109 | * function codes for the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) | |
110 | * instruction (0x80 is the decipher modifier bit) | |
111 | */ | |
112 | #define CPACF_KMAC_QUERY 0x00 | |
113 | #define CPACF_KMAC_DEA 0x01 | |
114 | #define CPACF_KMAC_TDEA_128 0x02 | |
115 | #define CPACF_KMAC_TDEA_192 0x03 | |
116 | ||
117 | /* | |
118 | * Function codes for the PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION) | |
119 | * instruction (0x80 is the decipher modifier bit) | |
120 | */ | |
121 | #define CPACF_PPNO_QUERY 0x00 | |
122 | #define CPACF_PPNO_SHA512_DRNG_GEN 0x03 | |
123 | #define CPACF_PPNO_SHA512_DRNG_SEED 0x83 | |
124 | ||
125 | /** | |
126 | * cpacf_query() - check if a specific CPACF function is available | |
127 | * @opcode: the opcode of the crypto instruction | |
128 | * @func: the function code to test for | |
129 | * | |
130 | * Executes the query function for the given crypto instruction @opcode | |
131 | * and checks if @func is available | |
132 | * | |
133 | * Returns 1 if @func is available for @opcode, 0 otherwise | |
134 | */ | |
135 | static inline void __cpacf_query(unsigned int opcode, unsigned char *status) | |
136 | { | |
137 | typedef struct { unsigned char _[16]; } status_type; | |
138 | register unsigned long r0 asm("0") = 0; /* query function */ | |
139 | register unsigned long r1 asm("1") = (unsigned long) status; | |
140 | ||
141 | asm volatile( | |
1afd43e0 | 142 | " spm 0\n" /* pckmo doesn't change the cc */ |
c7d4d259 MS |
143 | /* Parameter registers are ignored, but may not be 0 */ |
144 | "0: .insn rrf,%[opc] << 16,2,2,2,0\n" | |
145 | " brc 1,0b\n" /* handle partial completion */ | |
146 | : "=m" (*(status_type *) status) | |
147 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (opcode) | |
148 | : "cc"); | |
149 | } | |
150 | ||
151 | static inline int cpacf_query(unsigned int opcode, unsigned int func) | |
152 | { | |
153 | unsigned char status[16]; | |
154 | ||
155 | switch (opcode) { | |
156 | case CPACF_KMAC: | |
157 | case CPACF_KM: | |
158 | case CPACF_KMC: | |
159 | case CPACF_KIMD: | |
160 | case CPACF_KLMD: | |
161 | if (!test_facility(17)) /* check for MSA */ | |
162 | return 0; | |
163 | break; | |
1afd43e0 DH |
164 | case CPACF_PCKMO: |
165 | if (!test_facility(76)) /* check for MSA3 */ | |
166 | return 0; | |
167 | break; | |
168 | case CPACF_KMF: | |
169 | case CPACF_KMO: | |
c7d4d259 MS |
170 | case CPACF_PCC: |
171 | case CPACF_KMCTR: | |
172 | if (!test_facility(77)) /* check for MSA4 */ | |
173 | return 0; | |
174 | break; | |
175 | case CPACF_PPNO: | |
176 | if (!test_facility(57)) /* check for MSA5 */ | |
177 | return 0; | |
178 | break; | |
179 | default: | |
180 | BUG(); | |
181 | } | |
182 | __cpacf_query(opcode, status); | |
183 | return (status[func >> 3] & (0x80 >> (func & 7))) != 0; | |
184 | } | |
185 | ||
186 | /** | |
187 | * cpacf_km() - executes the KM (CIPHER MESSAGE) instruction | |
188 | * @func: the function code passed to KM; see CPACF_KM_xxx defines | |
189 | * @param: address of parameter block; see POP for details on each func | |
190 | * @dest: address of destination memory area | |
191 | * @src: address of source memory area | |
192 | * @src_len: length of src operand in bytes | |
193 | * | |
194 | * Returns 0 for the query func, number of processed bytes for | |
195 | * encryption/decryption funcs | |
196 | */ | |
197 | static inline int cpacf_km(long func, void *param, | |
198 | u8 *dest, const u8 *src, long src_len) | |
199 | { | |
200 | register unsigned long r0 asm("0") = (unsigned long) func; | |
201 | register unsigned long r1 asm("1") = (unsigned long) param; | |
202 | register unsigned long r2 asm("2") = (unsigned long) src; | |
203 | register unsigned long r3 asm("3") = (unsigned long) src_len; | |
204 | register unsigned long r4 asm("4") = (unsigned long) dest; | |
205 | ||
206 | asm volatile( | |
207 | "0: .insn rre,%[opc] << 16,%[dst],%[src]\n" | |
208 | " brc 1,0b\n" /* handle partial completion */ | |
209 | : [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4) | |
210 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KM) | |
211 | : "cc", "memory"); | |
212 | ||
213 | return src_len - r3; | |
214 | } | |
215 | ||
216 | /** | |
217 | * cpacf_kmc() - executes the KMC (CIPHER MESSAGE WITH CHAINING) instruction | |
218 | * @func: the function code passed to KM; see CPACF_KMC_xxx defines | |
219 | * @param: address of parameter block; see POP for details on each func | |
220 | * @dest: address of destination memory area | |
221 | * @src: address of source memory area | |
222 | * @src_len: length of src operand in bytes | |
223 | * | |
224 | * Returns 0 for the query func, number of processed bytes for | |
225 | * encryption/decryption funcs | |
226 | */ | |
227 | static inline int cpacf_kmc(long func, void *param, | |
228 | u8 *dest, const u8 *src, long src_len) | |
229 | { | |
230 | register unsigned long r0 asm("0") = (unsigned long) func; | |
231 | register unsigned long r1 asm("1") = (unsigned long) param; | |
232 | register unsigned long r2 asm("2") = (unsigned long) src; | |
233 | register unsigned long r3 asm("3") = (unsigned long) src_len; | |
234 | register unsigned long r4 asm("4") = (unsigned long) dest; | |
235 | ||
236 | asm volatile( | |
237 | "0: .insn rre,%[opc] << 16,%[dst],%[src]\n" | |
238 | " brc 1,0b\n" /* handle partial completion */ | |
239 | : [src] "+a" (r2), [len] "+d" (r3), [dst] "+a" (r4) | |
240 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMC) | |
241 | : "cc", "memory"); | |
242 | ||
243 | return src_len - r3; | |
244 | } | |
245 | ||
246 | /** | |
247 | * cpacf_kimd() - executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) | |
248 | * instruction | |
249 | * @func: the function code passed to KM; see CPACF_KIMD_xxx defines | |
250 | * @param: address of parameter block; see POP for details on each func | |
251 | * @src: address of source memory area | |
252 | * @src_len: length of src operand in bytes | |
253 | * | |
254 | * Returns 0 for the query func, number of processed bytes for digest funcs | |
255 | */ | |
256 | static inline int cpacf_kimd(long func, void *param, | |
257 | const u8 *src, long src_len) | |
258 | { | |
259 | register unsigned long r0 asm("0") = (unsigned long) func; | |
260 | register unsigned long r1 asm("1") = (unsigned long) param; | |
261 | register unsigned long r2 asm("2") = (unsigned long) src; | |
262 | register unsigned long r3 asm("3") = (unsigned long) src_len; | |
263 | ||
264 | asm volatile( | |
265 | "0: .insn rre,%[opc] << 16,0,%[src]\n" | |
266 | " brc 1,0b\n" /* handle partial completion */ | |
267 | : [src] "+a" (r2), [len] "+d" (r3) | |
268 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KIMD) | |
269 | : "cc", "memory"); | |
270 | ||
271 | return src_len - r3; | |
272 | } | |
273 | ||
274 | /** | |
275 | * cpacf_klmd() - executes the KLMD (COMPUTE LAST MESSAGE DIGEST) instruction | |
276 | * @func: the function code passed to KM; see CPACF_KLMD_xxx defines | |
277 | * @param: address of parameter block; see POP for details on each func | |
278 | * @src: address of source memory area | |
279 | * @src_len: length of src operand in bytes | |
280 | * | |
281 | * Returns 0 for the query func, number of processed bytes for digest funcs | |
282 | */ | |
283 | static inline int cpacf_klmd(long func, void *param, | |
284 | const u8 *src, long src_len) | |
285 | { | |
286 | register unsigned long r0 asm("0") = (unsigned long) func; | |
287 | register unsigned long r1 asm("1") = (unsigned long) param; | |
288 | register unsigned long r2 asm("2") = (unsigned long) src; | |
289 | register unsigned long r3 asm("3") = (unsigned long) src_len; | |
290 | ||
291 | asm volatile( | |
292 | "0: .insn rre,%[opc] << 16,0,%[src]\n" | |
293 | " brc 1,0b\n" /* handle partial completion */ | |
294 | : [src] "+a" (r2), [len] "+d" (r3) | |
295 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KLMD) | |
296 | : "cc", "memory"); | |
297 | ||
298 | return src_len - r3; | |
299 | } | |
300 | ||
301 | /** | |
302 | * cpacf_kmac() - executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) | |
303 | * instruction | |
304 | * @func: the function code passed to KM; see CPACF_KMAC_xxx defines | |
305 | * @param: address of parameter block; see POP for details on each func | |
306 | * @src: address of source memory area | |
307 | * @src_len: length of src operand in bytes | |
308 | * | |
309 | * Returns 0 for the query func, number of processed bytes for digest funcs | |
310 | */ | |
311 | static inline int cpacf_kmac(long func, void *param, | |
312 | const u8 *src, long src_len) | |
313 | { | |
314 | register unsigned long r0 asm("0") = (unsigned long) func; | |
315 | register unsigned long r1 asm("1") = (unsigned long) param; | |
316 | register unsigned long r2 asm("2") = (unsigned long) src; | |
317 | register unsigned long r3 asm("3") = (unsigned long) src_len; | |
318 | ||
319 | asm volatile( | |
320 | "0: .insn rre,%[opc] << 16,0,%[src]\n" | |
321 | " brc 1,0b\n" /* handle partial completion */ | |
322 | : [src] "+a" (r2), [len] "+d" (r3) | |
323 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMAC) | |
324 | : "cc", "memory"); | |
325 | ||
326 | return src_len - r3; | |
327 | } | |
328 | ||
329 | /** | |
330 | * cpacf_kmctr() - executes the KMCTR (CIPHER MESSAGE WITH COUNTER) instruction | |
331 | * @func: the function code passed to KMCTR; see CPACF_KMCTR_xxx defines | |
332 | * @param: address of parameter block; see POP for details on each func | |
333 | * @dest: address of destination memory area | |
334 | * @src: address of source memory area | |
335 | * @src_len: length of src operand in bytes | |
336 | * @counter: address of counter value | |
337 | * | |
338 | * Returns 0 for the query func, number of processed bytes for | |
339 | * encryption/decryption funcs | |
340 | */ | |
341 | static inline int cpacf_kmctr(long func, void *param, u8 *dest, | |
342 | const u8 *src, long src_len, u8 *counter) | |
343 | { | |
344 | register unsigned long r0 asm("0") = (unsigned long) func; | |
345 | register unsigned long r1 asm("1") = (unsigned long) param; | |
346 | register unsigned long r2 asm("2") = (unsigned long) src; | |
347 | register unsigned long r3 asm("3") = (unsigned long) src_len; | |
348 | register unsigned long r4 asm("4") = (unsigned long) dest; | |
349 | register unsigned long r6 asm("6") = (unsigned long) counter; | |
350 | ||
351 | asm volatile( | |
352 | "0: .insn rrf,%[opc] << 16,%[dst],%[src],%[ctr],0\n" | |
353 | " brc 1,0b\n" /* handle partial completion */ | |
354 | : [src] "+a" (r2), [len] "+d" (r3), | |
355 | [dst] "+a" (r4), [ctr] "+a" (r6) | |
356 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_KMCTR) | |
357 | : "cc", "memory"); | |
358 | ||
359 | return src_len - r3; | |
360 | } | |
361 | ||
362 | /** | |
363 | * cpacf_ppno() - executes the PPNO (PERFORM PSEUDORANDOM NUMBER OPERATION) | |
364 | * instruction | |
365 | * @func: the function code passed to PPNO; see CPACF_PPNO_xxx defines | |
366 | * @param: address of parameter block; see POP for details on each func | |
367 | * @dest: address of destination memory area | |
368 | * @dest_len: size of destination memory area in bytes | |
369 | * @seed: address of seed data | |
370 | * @seed_len: size of seed data in bytes | |
371 | * | |
372 | * Returns 0 for the query func, number of random bytes stored in | |
373 | * dest buffer for generate function | |
374 | */ | |
375 | static inline int cpacf_ppno(long func, void *param, | |
376 | u8 *dest, long dest_len, | |
377 | const u8 *seed, long seed_len) | |
378 | { | |
379 | register unsigned long r0 asm("0") = (unsigned long) func; | |
380 | register unsigned long r1 asm("1") = (unsigned long) param; | |
381 | register unsigned long r2 asm("2") = (unsigned long) dest; | |
382 | register unsigned long r3 asm("3") = (unsigned long) dest_len; | |
383 | register unsigned long r4 asm("4") = (unsigned long) seed; | |
384 | register unsigned long r5 asm("5") = (unsigned long) seed_len; | |
385 | ||
386 | asm volatile ( | |
387 | "0: .insn rre,%[opc] << 16,%[dst],%[seed]\n" | |
388 | " brc 1,0b\n" /* handle partial completion */ | |
389 | : [dst] "+a" (r2), [dlen] "+d" (r3) | |
390 | : [fc] "d" (r0), [pba] "a" (r1), | |
391 | [seed] "a" (r4), [slen] "d" (r5), [opc] "i" (CPACF_PPNO) | |
392 | : "cc", "memory"); | |
393 | ||
394 | return dest_len - r3; | |
395 | } | |
396 | ||
397 | /** | |
398 | * cpacf_pcc() - executes the PCC (PERFORM CRYPTOGRAPHIC COMPUTATION) | |
399 | * instruction | |
400 | * @func: the function code passed to PCC; see CPACF_KM_xxx defines | |
401 | * @param: address of parameter block; see POP for details on each func | |
402 | * | |
403 | * Returns 0. | |
404 | */ | |
405 | static inline int cpacf_pcc(long func, void *param) | |
406 | { | |
407 | register unsigned long r0 asm("0") = (unsigned long) func; | |
408 | register unsigned long r1 asm("1") = (unsigned long) param; | |
409 | ||
410 | asm volatile( | |
411 | "0: .insn rre,%[opc] << 16,0,0\n" /* PCC opcode */ | |
412 | " brc 1,0b\n" /* handle partial completion */ | |
413 | : | |
414 | : [fc] "d" (r0), [pba] "a" (r1), [opc] "i" (CPACF_PCC) | |
415 | : "cc", "memory"); | |
416 | ||
417 | return 0; | |
418 | } | |
419 | ||
420 | #endif /* _ASM_S390_CPACF_H */ |