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6684af1a MS |
1 | /* |
2 | * linux/drivers/s390/crypto/zcrypt_pcixcc.c | |
3 | * | |
5432114b | 4 | * zcrypt 2.1.0 |
6684af1a MS |
5 | * |
6 | * Copyright (C) 2001, 2006 IBM Corporation | |
7 | * Author(s): Robert Burroughs | |
8 | * Eric Rossman (edrossma@us.ibm.com) | |
9 | * | |
10 | * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) | |
11 | * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com> | |
12 | * Ralph Wuerthner <rwuerthn@de.ibm.com> | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2, or (at your option) | |
17 | * any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; if not, write to the Free Software | |
26 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
27 | */ | |
28 | ||
29 | #include <linux/module.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/err.h> | |
32 | #include <linux/delay.h> | |
33 | #include <asm/atomic.h> | |
34 | #include <asm/uaccess.h> | |
35 | ||
36 | #include "ap_bus.h" | |
37 | #include "zcrypt_api.h" | |
38 | #include "zcrypt_error.h" | |
39 | #include "zcrypt_pcicc.h" | |
40 | #include "zcrypt_pcixcc.h" | |
41 | #include "zcrypt_cca_key.h" | |
42 | ||
43 | #define PCIXCC_MIN_MOD_SIZE 16 /* 128 bits */ | |
44 | #define PCIXCC_MIN_MOD_SIZE_OLD 64 /* 512 bits */ | |
45 | #define PCIXCC_MAX_MOD_SIZE 256 /* 2048 bits */ | |
46 | ||
47 | #define PCIXCC_MCL2_SPEED_RATING 7870 /* FIXME: needs finetuning */ | |
48 | #define PCIXCC_MCL3_SPEED_RATING 7870 | |
49 | #define CEX2C_SPEED_RATING 8540 | |
50 | ||
51 | #define PCIXCC_MAX_ICA_MESSAGE_SIZE 0x77c /* max size type6 v2 crt message */ | |
52 | #define PCIXCC_MAX_ICA_RESPONSE_SIZE 0x77c /* max size type86 v2 reply */ | |
53 | ||
54 | #define PCIXCC_MAX_XCRB_MESSAGE_SIZE (12*1024) | |
55 | #define PCIXCC_MAX_XCRB_RESPONSE_SIZE PCIXCC_MAX_XCRB_MESSAGE_SIZE | |
56 | #define PCIXCC_MAX_XCRB_DATA_SIZE (11*1024) | |
57 | #define PCIXCC_MAX_XCRB_REPLY_SIZE (5*1024) | |
58 | ||
59 | #define PCIXCC_MAX_RESPONSE_SIZE PCIXCC_MAX_XCRB_RESPONSE_SIZE | |
60 | ||
61 | #define PCIXCC_CLEANUP_TIME (15*HZ) | |
62 | ||
5432114b RW |
63 | #define CEIL4(x) ((((x)+3)/4)*4) |
64 | ||
65 | struct response_type { | |
66 | struct completion work; | |
67 | int type; | |
68 | }; | |
69 | #define PCIXCC_RESPONSE_TYPE_ICA 0 | |
70 | #define PCIXCC_RESPONSE_TYPE_XCRB 1 | |
71 | ||
6684af1a MS |
72 | static struct ap_device_id zcrypt_pcixcc_ids[] = { |
73 | { AP_DEVICE(AP_DEVICE_TYPE_PCIXCC) }, | |
74 | { AP_DEVICE(AP_DEVICE_TYPE_CEX2C) }, | |
d8c33d32 | 75 | { AP_DEVICE(AP_DEVICE_TYPE_CEX2C2) }, |
6684af1a MS |
76 | { /* end of list */ }, |
77 | }; | |
78 | ||
79 | #ifndef CONFIG_ZCRYPT_MONOLITHIC | |
80 | MODULE_DEVICE_TABLE(ap, zcrypt_pcixcc_ids); | |
81 | MODULE_AUTHOR("IBM Corporation"); | |
82 | MODULE_DESCRIPTION("PCIXCC Cryptographic Coprocessor device driver, " | |
83 | "Copyright 2001, 2006 IBM Corporation"); | |
84 | MODULE_LICENSE("GPL"); | |
85 | #endif | |
86 | ||
87 | static int zcrypt_pcixcc_probe(struct ap_device *ap_dev); | |
88 | static void zcrypt_pcixcc_remove(struct ap_device *ap_dev); | |
89 | static void zcrypt_pcixcc_receive(struct ap_device *, struct ap_message *, | |
90 | struct ap_message *); | |
91 | ||
92 | static struct ap_driver zcrypt_pcixcc_driver = { | |
93 | .probe = zcrypt_pcixcc_probe, | |
94 | .remove = zcrypt_pcixcc_remove, | |
95 | .receive = zcrypt_pcixcc_receive, | |
96 | .ids = zcrypt_pcixcc_ids, | |
af512ed0 | 97 | .request_timeout = PCIXCC_CLEANUP_TIME, |
6684af1a MS |
98 | }; |
99 | ||
100 | /** | |
101 | * The following is used to initialize the CPRBX passed to the PCIXCC/CEX2C | |
102 | * card in a type6 message. The 3 fields that must be filled in at execution | |
103 | * time are req_parml, rpl_parml and usage_domain. | |
104 | * Everything about this interface is ascii/big-endian, since the | |
105 | * device does *not* have 'Intel inside'. | |
106 | * | |
107 | * The CPRBX is followed immediately by the parm block. | |
108 | * The parm block contains: | |
109 | * - function code ('PD' 0x5044 or 'PK' 0x504B) | |
110 | * - rule block (one of:) | |
111 | * + 0x000A 'PKCS-1.2' (MCL2 'PD') | |
112 | * + 0x000A 'ZERO-PAD' (MCL2 'PK') | |
113 | * + 0x000A 'ZERO-PAD' (MCL3 'PD' or CEX2C 'PD') | |
114 | * + 0x000A 'MRP ' (MCL3 'PK' or CEX2C 'PK') | |
115 | * - VUD block | |
116 | */ | |
117 | static struct CPRBX static_cprbx = { | |
118 | .cprb_len = 0x00DC, | |
119 | .cprb_ver_id = 0x02, | |
120 | .func_id = {0x54,0x32}, | |
121 | }; | |
122 | ||
123 | /** | |
124 | * Convert a ICAMEX message to a type6 MEX message. | |
125 | * | |
126 | * @zdev: crypto device pointer | |
127 | * @ap_msg: pointer to AP message | |
128 | * @mex: pointer to user input data | |
129 | * | |
130 | * Returns 0 on success or -EFAULT. | |
131 | */ | |
132 | static int ICAMEX_msg_to_type6MEX_msgX(struct zcrypt_device *zdev, | |
133 | struct ap_message *ap_msg, | |
134 | struct ica_rsa_modexpo *mex) | |
135 | { | |
136 | static struct type6_hdr static_type6_hdrX = { | |
137 | .type = 0x06, | |
138 | .offset1 = 0x00000058, | |
139 | .agent_id = {'C','A',}, | |
140 | .function_code = {'P','K'}, | |
141 | }; | |
142 | static struct function_and_rules_block static_pke_fnr = { | |
143 | .function_code = {'P','K'}, | |
144 | .ulen = 10, | |
145 | .only_rule = {'M','R','P',' ',' ',' ',' ',' '} | |
146 | }; | |
147 | static struct function_and_rules_block static_pke_fnr_MCL2 = { | |
148 | .function_code = {'P','K'}, | |
149 | .ulen = 10, | |
150 | .only_rule = {'Z','E','R','O','-','P','A','D'} | |
151 | }; | |
152 | struct { | |
153 | struct type6_hdr hdr; | |
154 | struct CPRBX cprbx; | |
155 | struct function_and_rules_block fr; | |
156 | unsigned short length; | |
157 | char text[0]; | |
158 | } __attribute__((packed)) *msg = ap_msg->message; | |
159 | int size; | |
160 | ||
161 | /* VUD.ciphertext */ | |
162 | msg->length = mex->inputdatalength + 2; | |
163 | if (copy_from_user(msg->text, mex->inputdata, mex->inputdatalength)) | |
164 | return -EFAULT; | |
165 | ||
166 | /* Set up key which is located after the variable length text. */ | |
167 | size = zcrypt_type6_mex_key_en(mex, msg->text+mex->inputdatalength, 1); | |
168 | if (size < 0) | |
169 | return size; | |
170 | size += sizeof(*msg) + mex->inputdatalength; | |
171 | ||
172 | /* message header, cprbx and f&r */ | |
173 | msg->hdr = static_type6_hdrX; | |
174 | msg->hdr.ToCardLen1 = size - sizeof(msg->hdr); | |
175 | msg->hdr.FromCardLen1 = PCIXCC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr); | |
176 | ||
177 | msg->cprbx = static_cprbx; | |
178 | msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid); | |
179 | msg->cprbx.rpl_msgbl = msg->hdr.FromCardLen1; | |
180 | ||
181 | msg->fr = (zdev->user_space_type == ZCRYPT_PCIXCC_MCL2) ? | |
182 | static_pke_fnr_MCL2 : static_pke_fnr; | |
183 | ||
184 | msg->cprbx.req_parml = size - sizeof(msg->hdr) - sizeof(msg->cprbx); | |
185 | ||
186 | ap_msg->length = size; | |
187 | return 0; | |
188 | } | |
189 | ||
190 | /** | |
191 | * Convert a ICACRT message to a type6 CRT message. | |
192 | * | |
193 | * @zdev: crypto device pointer | |
194 | * @ap_msg: pointer to AP message | |
195 | * @crt: pointer to user input data | |
196 | * | |
197 | * Returns 0 on success or -EFAULT. | |
198 | */ | |
199 | static int ICACRT_msg_to_type6CRT_msgX(struct zcrypt_device *zdev, | |
200 | struct ap_message *ap_msg, | |
201 | struct ica_rsa_modexpo_crt *crt) | |
202 | { | |
203 | static struct type6_hdr static_type6_hdrX = { | |
204 | .type = 0x06, | |
205 | .offset1 = 0x00000058, | |
206 | .agent_id = {'C','A',}, | |
207 | .function_code = {'P','D'}, | |
208 | }; | |
209 | static struct function_and_rules_block static_pkd_fnr = { | |
210 | .function_code = {'P','D'}, | |
211 | .ulen = 10, | |
212 | .only_rule = {'Z','E','R','O','-','P','A','D'} | |
213 | }; | |
214 | ||
215 | static struct function_and_rules_block static_pkd_fnr_MCL2 = { | |
216 | .function_code = {'P','D'}, | |
217 | .ulen = 10, | |
218 | .only_rule = {'P','K','C','S','-','1','.','2'} | |
219 | }; | |
220 | struct { | |
221 | struct type6_hdr hdr; | |
222 | struct CPRBX cprbx; | |
223 | struct function_and_rules_block fr; | |
224 | unsigned short length; | |
225 | char text[0]; | |
226 | } __attribute__((packed)) *msg = ap_msg->message; | |
227 | int size; | |
228 | ||
229 | /* VUD.ciphertext */ | |
230 | msg->length = crt->inputdatalength + 2; | |
231 | if (copy_from_user(msg->text, crt->inputdata, crt->inputdatalength)) | |
232 | return -EFAULT; | |
233 | ||
234 | /* Set up key which is located after the variable length text. */ | |
235 | size = zcrypt_type6_crt_key(crt, msg->text + crt->inputdatalength, 1); | |
236 | if (size < 0) | |
237 | return size; | |
238 | size += sizeof(*msg) + crt->inputdatalength; /* total size of msg */ | |
239 | ||
240 | /* message header, cprbx and f&r */ | |
241 | msg->hdr = static_type6_hdrX; | |
242 | msg->hdr.ToCardLen1 = size - sizeof(msg->hdr); | |
243 | msg->hdr.FromCardLen1 = PCIXCC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr); | |
244 | ||
245 | msg->cprbx = static_cprbx; | |
246 | msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid); | |
247 | msg->cprbx.req_parml = msg->cprbx.rpl_msgbl = | |
248 | size - sizeof(msg->hdr) - sizeof(msg->cprbx); | |
249 | ||
250 | msg->fr = (zdev->user_space_type == ZCRYPT_PCIXCC_MCL2) ? | |
251 | static_pkd_fnr_MCL2 : static_pkd_fnr; | |
252 | ||
253 | ap_msg->length = size; | |
254 | return 0; | |
255 | } | |
256 | ||
5432114b RW |
257 | /** |
258 | * Convert a XCRB message to a type6 CPRB message. | |
259 | * | |
260 | * @zdev: crypto device pointer | |
261 | * @ap_msg: pointer to AP message | |
262 | * @xcRB: pointer to user input data | |
263 | * | |
264 | * Returns 0 on success or -EFAULT. | |
265 | */ | |
266 | struct type86_fmt2_msg { | |
267 | struct type86_hdr hdr; | |
268 | struct type86_fmt2_ext fmt2; | |
269 | } __attribute__((packed)); | |
270 | ||
271 | static int XCRB_msg_to_type6CPRB_msgX(struct zcrypt_device *zdev, | |
272 | struct ap_message *ap_msg, | |
273 | struct ica_xcRB *xcRB) | |
274 | { | |
275 | static struct type6_hdr static_type6_hdrX = { | |
276 | .type = 0x06, | |
277 | .offset1 = 0x00000058, | |
278 | }; | |
279 | struct { | |
280 | struct type6_hdr hdr; | |
16db63fd | 281 | struct CPRBX cprbx; |
5432114b RW |
282 | } __attribute__((packed)) *msg = ap_msg->message; |
283 | ||
284 | int rcblen = CEIL4(xcRB->request_control_blk_length); | |
285 | int replylen; | |
286 | char *req_data = ap_msg->message + sizeof(struct type6_hdr) + rcblen; | |
287 | char *function_code; | |
288 | ||
289 | /* length checks */ | |
290 | ap_msg->length = sizeof(struct type6_hdr) + | |
291 | CEIL4(xcRB->request_control_blk_length) + | |
292 | xcRB->request_data_length; | |
1a89dd8f | 293 | if (ap_msg->length > PCIXCC_MAX_XCRB_MESSAGE_SIZE) |
5432114b | 294 | return -EFAULT; |
1a89dd8f | 295 | if (CEIL4(xcRB->reply_control_blk_length) > PCIXCC_MAX_XCRB_REPLY_SIZE) |
5432114b | 296 | return -EFAULT; |
1a89dd8f | 297 | if (CEIL4(xcRB->reply_data_length) > PCIXCC_MAX_XCRB_DATA_SIZE) |
5432114b | 298 | return -EFAULT; |
5432114b RW |
299 | replylen = CEIL4(xcRB->reply_control_blk_length) + |
300 | CEIL4(xcRB->reply_data_length) + | |
301 | sizeof(struct type86_fmt2_msg); | |
302 | if (replylen > PCIXCC_MAX_XCRB_RESPONSE_SIZE) { | |
5432114b RW |
303 | xcRB->reply_control_blk_length = PCIXCC_MAX_XCRB_RESPONSE_SIZE - |
304 | (sizeof(struct type86_fmt2_msg) + | |
305 | CEIL4(xcRB->reply_data_length)); | |
5432114b RW |
306 | } |
307 | ||
308 | /* prepare type6 header */ | |
309 | msg->hdr = static_type6_hdrX; | |
310 | memcpy(msg->hdr.agent_id , &(xcRB->agent_ID), sizeof(xcRB->agent_ID)); | |
311 | msg->hdr.ToCardLen1 = xcRB->request_control_blk_length; | |
312 | if (xcRB->request_data_length) { | |
313 | msg->hdr.offset2 = msg->hdr.offset1 + rcblen; | |
314 | msg->hdr.ToCardLen2 = xcRB->request_data_length; | |
315 | } | |
316 | msg->hdr.FromCardLen1 = xcRB->reply_control_blk_length; | |
317 | msg->hdr.FromCardLen2 = xcRB->reply_data_length; | |
318 | ||
319 | /* prepare CPRB */ | |
320 | if (copy_from_user(&(msg->cprbx), xcRB->request_control_blk_addr, | |
321 | xcRB->request_control_blk_length)) | |
322 | return -EFAULT; | |
323 | if (msg->cprbx.cprb_len + sizeof(msg->hdr.function_code) > | |
1a89dd8f | 324 | xcRB->request_control_blk_length) |
5432114b | 325 | return -EFAULT; |
5432114b RW |
326 | function_code = ((unsigned char *)&msg->cprbx) + msg->cprbx.cprb_len; |
327 | memcpy(msg->hdr.function_code, function_code, sizeof(msg->hdr.function_code)); | |
328 | ||
329 | /* copy data block */ | |
330 | if (xcRB->request_data_length && | |
331 | copy_from_user(req_data, xcRB->request_data_address, | |
332 | xcRB->request_data_length)) | |
333 | return -EFAULT; | |
334 | return 0; | |
335 | } | |
336 | ||
2f7c8bd6 RW |
337 | /** |
338 | * Prepare a type6 CPRB message for random number generation | |
339 | * | |
340 | * @ap_dev: AP device pointer | |
341 | * @ap_msg: pointer to AP message | |
342 | */ | |
343 | static void rng_type6CPRB_msgX(struct ap_device *ap_dev, | |
344 | struct ap_message *ap_msg, | |
345 | unsigned random_number_length) | |
346 | { | |
347 | struct { | |
348 | struct type6_hdr hdr; | |
349 | struct CPRBX cprbx; | |
350 | char function_code[2]; | |
351 | short int rule_length; | |
352 | char rule[8]; | |
353 | short int verb_length; | |
354 | short int key_length; | |
355 | } __attribute__((packed)) *msg = ap_msg->message; | |
356 | static struct type6_hdr static_type6_hdrX = { | |
357 | .type = 0x06, | |
358 | .offset1 = 0x00000058, | |
359 | .agent_id = {'C', 'A'}, | |
360 | .function_code = {'R', 'L'}, | |
361 | .ToCardLen1 = sizeof *msg - sizeof(msg->hdr), | |
362 | .FromCardLen1 = sizeof *msg - sizeof(msg->hdr), | |
363 | }; | |
364 | static struct CPRBX static_cprbx = { | |
365 | .cprb_len = 0x00dc, | |
366 | .cprb_ver_id = 0x02, | |
367 | .func_id = {0x54, 0x32}, | |
368 | .req_parml = sizeof *msg - sizeof(msg->hdr) - | |
369 | sizeof(msg->cprbx), | |
370 | .rpl_msgbl = sizeof *msg - sizeof(msg->hdr), | |
371 | }; | |
372 | ||
373 | msg->hdr = static_type6_hdrX; | |
374 | msg->hdr.FromCardLen2 = random_number_length, | |
375 | msg->cprbx = static_cprbx; | |
376 | msg->cprbx.rpl_datal = random_number_length, | |
377 | msg->cprbx.domain = AP_QID_QUEUE(ap_dev->qid); | |
378 | memcpy(msg->function_code, msg->hdr.function_code, 0x02); | |
379 | msg->rule_length = 0x0a; | |
380 | memcpy(msg->rule, "RANDOM ", 8); | |
381 | msg->verb_length = 0x02; | |
382 | msg->key_length = 0x02; | |
383 | ap_msg->length = sizeof *msg; | |
384 | } | |
385 | ||
6684af1a MS |
386 | /** |
387 | * Copy results from a type 86 ICA reply message back to user space. | |
388 | * | |
389 | * @zdev: crypto device pointer | |
390 | * @reply: reply AP message. | |
391 | * @data: pointer to user output data | |
392 | * @length: size of user output data | |
393 | * | |
394 | * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error. | |
395 | */ | |
396 | struct type86x_reply { | |
397 | struct type86_hdr hdr; | |
398 | struct type86_fmt2_ext fmt2; | |
399 | struct CPRBX cprbx; | |
400 | unsigned char pad[4]; /* 4 byte function code/rules block ? */ | |
401 | unsigned short length; | |
402 | char text[0]; | |
403 | } __attribute__((packed)); | |
404 | ||
405 | static int convert_type86_ica(struct zcrypt_device *zdev, | |
406 | struct ap_message *reply, | |
407 | char __user *outputdata, | |
408 | unsigned int outputdatalength) | |
409 | { | |
410 | static unsigned char static_pad[] = { | |
411 | 0x00,0x02, | |
412 | 0x1B,0x7B,0x5D,0xB5,0x75,0x01,0x3D,0xFD, | |
413 | 0x8D,0xD1,0xC7,0x03,0x2D,0x09,0x23,0x57, | |
414 | 0x89,0x49,0xB9,0x3F,0xBB,0x99,0x41,0x5B, | |
415 | 0x75,0x21,0x7B,0x9D,0x3B,0x6B,0x51,0x39, | |
416 | 0xBB,0x0D,0x35,0xB9,0x89,0x0F,0x93,0xA5, | |
417 | 0x0B,0x47,0xF1,0xD3,0xBB,0xCB,0xF1,0x9D, | |
418 | 0x23,0x73,0x71,0xFF,0xF3,0xF5,0x45,0xFB, | |
419 | 0x61,0x29,0x23,0xFD,0xF1,0x29,0x3F,0x7F, | |
420 | 0x17,0xB7,0x1B,0xA9,0x19,0xBD,0x57,0xA9, | |
421 | 0xD7,0x95,0xA3,0xCB,0xED,0x1D,0xDB,0x45, | |
422 | 0x7D,0x11,0xD1,0x51,0x1B,0xED,0x71,0xE9, | |
423 | 0xB1,0xD1,0xAB,0xAB,0x21,0x2B,0x1B,0x9F, | |
424 | 0x3B,0x9F,0xF7,0xF7,0xBD,0x63,0xEB,0xAD, | |
425 | 0xDF,0xB3,0x6F,0x5B,0xDB,0x8D,0xA9,0x5D, | |
426 | 0xE3,0x7D,0x77,0x49,0x47,0xF5,0xA7,0xFD, | |
427 | 0xAB,0x2F,0x27,0x35,0x77,0xD3,0x49,0xC9, | |
428 | 0x09,0xEB,0xB1,0xF9,0xBF,0x4B,0xCB,0x2B, | |
429 | 0xEB,0xEB,0x05,0xFF,0x7D,0xC7,0x91,0x8B, | |
430 | 0x09,0x83,0xB9,0xB9,0x69,0x33,0x39,0x6B, | |
431 | 0x79,0x75,0x19,0xBF,0xBB,0x07,0x1D,0xBD, | |
432 | 0x29,0xBF,0x39,0x95,0x93,0x1D,0x35,0xC7, | |
433 | 0xC9,0x4D,0xE5,0x97,0x0B,0x43,0x9B,0xF1, | |
434 | 0x16,0x93,0x03,0x1F,0xA5,0xFB,0xDB,0xF3, | |
435 | 0x27,0x4F,0x27,0x61,0x05,0x1F,0xB9,0x23, | |
436 | 0x2F,0xC3,0x81,0xA9,0x23,0x71,0x55,0x55, | |
437 | 0xEB,0xED,0x41,0xE5,0xF3,0x11,0xF1,0x43, | |
438 | 0x69,0x03,0xBD,0x0B,0x37,0x0F,0x51,0x8F, | |
439 | 0x0B,0xB5,0x89,0x5B,0x67,0xA9,0xD9,0x4F, | |
440 | 0x01,0xF9,0x21,0x77,0x37,0x73,0x79,0xC5, | |
441 | 0x7F,0x51,0xC1,0xCF,0x97,0xA1,0x75,0xAD, | |
442 | 0x35,0x9D,0xD3,0xD3,0xA7,0x9D,0x5D,0x41, | |
443 | 0x6F,0x65,0x1B,0xCF,0xA9,0x87,0x91,0x09 | |
444 | }; | |
445 | struct type86x_reply *msg = reply->message; | |
446 | unsigned short service_rc, service_rs; | |
447 | unsigned int reply_len, pad_len; | |
448 | char *data; | |
449 | ||
450 | service_rc = msg->cprbx.ccp_rtcode; | |
451 | if (unlikely(service_rc != 0)) { | |
452 | service_rs = msg->cprbx.ccp_rscode; | |
1a89dd8f | 453 | if (service_rc == 8 && service_rs == 66) |
6684af1a | 454 | return -EINVAL; |
1a89dd8f | 455 | if (service_rc == 8 && service_rs == 65) |
6684af1a | 456 | return -EINVAL; |
1a89dd8f | 457 | if (service_rc == 8 && service_rs == 770) |
2af48080 | 458 | return -EINVAL; |
6684af1a | 459 | if (service_rc == 8 && service_rs == 783) { |
6684af1a MS |
460 | zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD; |
461 | return -EAGAIN; | |
462 | } | |
1a89dd8f | 463 | if (service_rc == 12 && service_rs == 769) |
2af48080 | 464 | return -EINVAL; |
6684af1a MS |
465 | zdev->online = 0; |
466 | return -EAGAIN; /* repeat the request on a different device. */ | |
467 | } | |
468 | data = msg->text; | |
469 | reply_len = msg->length - 2; | |
470 | if (reply_len > outputdatalength) | |
471 | return -EINVAL; | |
1749a81d | 472 | /* |
6684af1a MS |
473 | * For all encipher requests, the length of the ciphertext (reply_len) |
474 | * will always equal the modulus length. For MEX decipher requests | |
475 | * the output needs to get padded. Minimum pad size is 10. | |
476 | * | |
477 | * Currently, the cases where padding will be added is for: | |
478 | * - PCIXCC_MCL2 using a CRT form token (since PKD didn't support | |
479 | * ZERO-PAD and CRT is only supported for PKD requests) | |
480 | * - PCICC, always | |
481 | */ | |
482 | pad_len = outputdatalength - reply_len; | |
483 | if (pad_len > 0) { | |
484 | if (pad_len < 10) | |
485 | return -EINVAL; | |
486 | /* 'restore' padding left in the PCICC/PCIXCC card. */ | |
487 | if (copy_to_user(outputdata, static_pad, pad_len - 1)) | |
488 | return -EFAULT; | |
489 | if (put_user(0, outputdata + pad_len - 1)) | |
490 | return -EFAULT; | |
491 | } | |
492 | /* Copy the crypto response to user space. */ | |
493 | if (copy_to_user(outputdata + pad_len, data, reply_len)) | |
494 | return -EFAULT; | |
495 | return 0; | |
496 | } | |
497 | ||
5432114b RW |
498 | /** |
499 | * Copy results from a type 86 XCRB reply message back to user space. | |
500 | * | |
501 | * @zdev: crypto device pointer | |
502 | * @reply: reply AP message. | |
503 | * @xcRB: pointer to XCRB | |
504 | * | |
505 | * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error. | |
506 | */ | |
507 | static int convert_type86_xcrb(struct zcrypt_device *zdev, | |
508 | struct ap_message *reply, | |
509 | struct ica_xcRB *xcRB) | |
510 | { | |
511 | struct type86_fmt2_msg *msg = reply->message; | |
512 | char *data = reply->message; | |
513 | ||
514 | /* Copy CPRB to user */ | |
515 | if (copy_to_user(xcRB->reply_control_blk_addr, | |
516 | data + msg->fmt2.offset1, msg->fmt2.count1)) | |
517 | return -EFAULT; | |
518 | xcRB->reply_control_blk_length = msg->fmt2.count1; | |
519 | ||
520 | /* Copy data buffer to user */ | |
521 | if (msg->fmt2.count2) | |
522 | if (copy_to_user(xcRB->reply_data_addr, | |
523 | data + msg->fmt2.offset2, msg->fmt2.count2)) | |
524 | return -EFAULT; | |
525 | xcRB->reply_data_length = msg->fmt2.count2; | |
526 | return 0; | |
527 | } | |
528 | ||
2f7c8bd6 RW |
529 | static int convert_type86_rng(struct zcrypt_device *zdev, |
530 | struct ap_message *reply, | |
531 | char *buffer) | |
532 | { | |
533 | struct { | |
534 | struct type86_hdr hdr; | |
535 | struct type86_fmt2_ext fmt2; | |
536 | struct CPRBX cprbx; | |
537 | } __attribute__((packed)) *msg = reply->message; | |
538 | char *data = reply->message; | |
539 | ||
1a89dd8f | 540 | if (msg->cprbx.ccp_rtcode != 0 || msg->cprbx.ccp_rscode != 0) |
2f7c8bd6 | 541 | return -EINVAL; |
2f7c8bd6 RW |
542 | memcpy(buffer, data + msg->fmt2.offset2, msg->fmt2.count2); |
543 | return msg->fmt2.count2; | |
544 | } | |
545 | ||
6684af1a MS |
546 | static int convert_response_ica(struct zcrypt_device *zdev, |
547 | struct ap_message *reply, | |
548 | char __user *outputdata, | |
549 | unsigned int outputdatalength) | |
550 | { | |
551 | struct type86x_reply *msg = reply->message; | |
552 | ||
553 | /* Response type byte is the second byte in the response. */ | |
554 | switch (((unsigned char *) reply->message)[1]) { | |
555 | case TYPE82_RSP_CODE: | |
556 | case TYPE88_RSP_CODE: | |
557 | return convert_error(zdev, reply); | |
558 | case TYPE86_RSP_CODE: | |
559 | if (msg->hdr.reply_code) | |
560 | return convert_error(zdev, reply); | |
561 | if (msg->cprbx.cprb_ver_id == 0x02) | |
562 | return convert_type86_ica(zdev, reply, | |
563 | outputdata, outputdatalength); | |
564 | /* no break, incorrect cprb version is an unknown response */ | |
565 | default: /* Unknown response type, this should NEVER EVER happen */ | |
6684af1a MS |
566 | zdev->online = 0; |
567 | return -EAGAIN; /* repeat the request on a different device. */ | |
568 | } | |
569 | } | |
570 | ||
5432114b RW |
571 | static int convert_response_xcrb(struct zcrypt_device *zdev, |
572 | struct ap_message *reply, | |
573 | struct ica_xcRB *xcRB) | |
574 | { | |
575 | struct type86x_reply *msg = reply->message; | |
576 | ||
577 | /* Response type byte is the second byte in the response. */ | |
578 | switch (((unsigned char *) reply->message)[1]) { | |
579 | case TYPE82_RSP_CODE: | |
580 | case TYPE88_RSP_CODE: | |
581 | xcRB->status = 0x0008044DL; /* HDD_InvalidParm */ | |
582 | return convert_error(zdev, reply); | |
583 | case TYPE86_RSP_CODE: | |
584 | if (msg->hdr.reply_code) { | |
585 | memcpy(&(xcRB->status), msg->fmt2.apfs, sizeof(u32)); | |
586 | return convert_error(zdev, reply); | |
587 | } | |
588 | if (msg->cprbx.cprb_ver_id == 0x02) | |
589 | return convert_type86_xcrb(zdev, reply, xcRB); | |
590 | /* no break, incorrect cprb version is an unknown response */ | |
591 | default: /* Unknown response type, this should NEVER EVER happen */ | |
5432114b RW |
592 | xcRB->status = 0x0008044DL; /* HDD_InvalidParm */ |
593 | zdev->online = 0; | |
594 | return -EAGAIN; /* repeat the request on a different device. */ | |
595 | } | |
596 | } | |
597 | ||
2f7c8bd6 RW |
598 | static int convert_response_rng(struct zcrypt_device *zdev, |
599 | struct ap_message *reply, | |
600 | char *data) | |
601 | { | |
602 | struct type86x_reply *msg = reply->message; | |
603 | ||
604 | switch (msg->hdr.type) { | |
605 | case TYPE82_RSP_CODE: | |
606 | case TYPE88_RSP_CODE: | |
607 | return -EINVAL; | |
608 | case TYPE86_RSP_CODE: | |
609 | if (msg->hdr.reply_code) | |
610 | return -EINVAL; | |
611 | if (msg->cprbx.cprb_ver_id == 0x02) | |
612 | return convert_type86_rng(zdev, reply, data); | |
613 | /* no break, incorrect cprb version is an unknown response */ | |
614 | default: /* Unknown response type, this should NEVER EVER happen */ | |
2f7c8bd6 RW |
615 | zdev->online = 0; |
616 | return -EAGAIN; /* repeat the request on a different device. */ | |
617 | } | |
618 | } | |
619 | ||
6684af1a MS |
620 | /** |
621 | * This function is called from the AP bus code after a crypto request | |
622 | * "msg" has finished with the reply message "reply". | |
623 | * It is called from tasklet context. | |
624 | * @ap_dev: pointer to the AP device | |
625 | * @msg: pointer to the AP message | |
626 | * @reply: pointer to the AP reply message | |
627 | */ | |
628 | static void zcrypt_pcixcc_receive(struct ap_device *ap_dev, | |
629 | struct ap_message *msg, | |
630 | struct ap_message *reply) | |
631 | { | |
632 | static struct error_hdr error_reply = { | |
633 | .type = TYPE82_RSP_CODE, | |
634 | .reply_code = REP82_ERROR_MACHINE_FAILURE, | |
635 | }; | |
5432114b RW |
636 | struct response_type *resp_type = |
637 | (struct response_type *) msg->private; | |
21e7b2c4 | 638 | struct type86x_reply *t86r; |
6684af1a MS |
639 | int length; |
640 | ||
641 | /* Copy the reply message to the request message buffer. */ | |
21e7b2c4 | 642 | if (IS_ERR(reply)) { |
6684af1a | 643 | memcpy(msg->message, &error_reply, sizeof(error_reply)); |
21e7b2c4 JL |
644 | goto out; |
645 | } | |
646 | t86r = reply->message; | |
647 | if (t86r->hdr.type == TYPE86_RSP_CODE && | |
6684af1a | 648 | t86r->cprbx.cprb_ver_id == 0x02) { |
5432114b RW |
649 | switch (resp_type->type) { |
650 | case PCIXCC_RESPONSE_TYPE_ICA: | |
651 | length = sizeof(struct type86x_reply) | |
652 | + t86r->length - 2; | |
653 | length = min(PCIXCC_MAX_ICA_RESPONSE_SIZE, length); | |
654 | memcpy(msg->message, reply->message, length); | |
655 | break; | |
656 | case PCIXCC_RESPONSE_TYPE_XCRB: | |
657 | length = t86r->fmt2.offset2 + t86r->fmt2.count2; | |
658 | length = min(PCIXCC_MAX_XCRB_RESPONSE_SIZE, length); | |
659 | memcpy(msg->message, reply->message, length); | |
660 | break; | |
661 | default: | |
1a89dd8f | 662 | memcpy(msg->message, &error_reply, sizeof error_reply); |
5432114b | 663 | } |
6684af1a MS |
664 | } else |
665 | memcpy(msg->message, reply->message, sizeof error_reply); | |
21e7b2c4 | 666 | out: |
5432114b | 667 | complete(&(resp_type->work)); |
6684af1a MS |
668 | } |
669 | ||
670 | static atomic_t zcrypt_step = ATOMIC_INIT(0); | |
671 | ||
672 | /** | |
673 | * The request distributor calls this function if it picked the PCIXCC/CEX2C | |
674 | * device to handle a modexpo request. | |
675 | * @zdev: pointer to zcrypt_device structure that identifies the | |
676 | * PCIXCC/CEX2C device to the request distributor | |
677 | * @mex: pointer to the modexpo request buffer | |
678 | */ | |
679 | static long zcrypt_pcixcc_modexpo(struct zcrypt_device *zdev, | |
680 | struct ica_rsa_modexpo *mex) | |
681 | { | |
682 | struct ap_message ap_msg; | |
5432114b RW |
683 | struct response_type resp_type = { |
684 | .type = PCIXCC_RESPONSE_TYPE_ICA, | |
685 | }; | |
6684af1a MS |
686 | int rc; |
687 | ||
688 | ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL); | |
689 | if (!ap_msg.message) | |
690 | return -ENOMEM; | |
691 | ap_msg.psmid = (((unsigned long long) current->pid) << 32) + | |
692 | atomic_inc_return(&zcrypt_step); | |
5432114b | 693 | ap_msg.private = &resp_type; |
6684af1a MS |
694 | rc = ICAMEX_msg_to_type6MEX_msgX(zdev, &ap_msg, mex); |
695 | if (rc) | |
696 | goto out_free; | |
5432114b | 697 | init_completion(&resp_type.work); |
6684af1a | 698 | ap_queue_message(zdev->ap_dev, &ap_msg); |
af512ed0 RW |
699 | rc = wait_for_completion_interruptible(&resp_type.work); |
700 | if (rc == 0) | |
6684af1a MS |
701 | rc = convert_response_ica(zdev, &ap_msg, mex->outputdata, |
702 | mex->outputdatalength); | |
af512ed0 RW |
703 | else |
704 | /* Signal pending. */ | |
6684af1a | 705 | ap_cancel_message(zdev->ap_dev, &ap_msg); |
6684af1a MS |
706 | out_free: |
707 | free_page((unsigned long) ap_msg.message); | |
708 | return rc; | |
709 | } | |
710 | ||
711 | /** | |
712 | * The request distributor calls this function if it picked the PCIXCC/CEX2C | |
713 | * device to handle a modexpo_crt request. | |
714 | * @zdev: pointer to zcrypt_device structure that identifies the | |
715 | * PCIXCC/CEX2C device to the request distributor | |
716 | * @crt: pointer to the modexpoc_crt request buffer | |
717 | */ | |
718 | static long zcrypt_pcixcc_modexpo_crt(struct zcrypt_device *zdev, | |
719 | struct ica_rsa_modexpo_crt *crt) | |
720 | { | |
721 | struct ap_message ap_msg; | |
5432114b RW |
722 | struct response_type resp_type = { |
723 | .type = PCIXCC_RESPONSE_TYPE_ICA, | |
724 | }; | |
6684af1a MS |
725 | int rc; |
726 | ||
727 | ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL); | |
728 | if (!ap_msg.message) | |
729 | return -ENOMEM; | |
730 | ap_msg.psmid = (((unsigned long long) current->pid) << 32) + | |
731 | atomic_inc_return(&zcrypt_step); | |
5432114b | 732 | ap_msg.private = &resp_type; |
6684af1a MS |
733 | rc = ICACRT_msg_to_type6CRT_msgX(zdev, &ap_msg, crt); |
734 | if (rc) | |
735 | goto out_free; | |
5432114b | 736 | init_completion(&resp_type.work); |
6684af1a | 737 | ap_queue_message(zdev->ap_dev, &ap_msg); |
af512ed0 RW |
738 | rc = wait_for_completion_interruptible(&resp_type.work); |
739 | if (rc == 0) | |
6684af1a MS |
740 | rc = convert_response_ica(zdev, &ap_msg, crt->outputdata, |
741 | crt->outputdatalength); | |
af512ed0 RW |
742 | else |
743 | /* Signal pending. */ | |
6684af1a | 744 | ap_cancel_message(zdev->ap_dev, &ap_msg); |
6684af1a MS |
745 | out_free: |
746 | free_page((unsigned long) ap_msg.message); | |
747 | return rc; | |
748 | } | |
749 | ||
5432114b RW |
750 | /** |
751 | * The request distributor calls this function if it picked the PCIXCC/CEX2C | |
752 | * device to handle a send_cprb request. | |
753 | * @zdev: pointer to zcrypt_device structure that identifies the | |
754 | * PCIXCC/CEX2C device to the request distributor | |
755 | * @xcRB: pointer to the send_cprb request buffer | |
756 | */ | |
2b67fc46 HC |
757 | static long zcrypt_pcixcc_send_cprb(struct zcrypt_device *zdev, |
758 | struct ica_xcRB *xcRB) | |
5432114b RW |
759 | { |
760 | struct ap_message ap_msg; | |
761 | struct response_type resp_type = { | |
762 | .type = PCIXCC_RESPONSE_TYPE_XCRB, | |
763 | }; | |
764 | int rc; | |
765 | ||
5cbded58 | 766 | ap_msg.message = kmalloc(PCIXCC_MAX_XCRB_MESSAGE_SIZE, GFP_KERNEL); |
5432114b RW |
767 | if (!ap_msg.message) |
768 | return -ENOMEM; | |
769 | ap_msg.psmid = (((unsigned long long) current->pid) << 32) + | |
770 | atomic_inc_return(&zcrypt_step); | |
771 | ap_msg.private = &resp_type; | |
772 | rc = XCRB_msg_to_type6CPRB_msgX(zdev, &ap_msg, xcRB); | |
773 | if (rc) | |
774 | goto out_free; | |
775 | init_completion(&resp_type.work); | |
776 | ap_queue_message(zdev->ap_dev, &ap_msg); | |
af512ed0 RW |
777 | rc = wait_for_completion_interruptible(&resp_type.work); |
778 | if (rc == 0) | |
5432114b | 779 | rc = convert_response_xcrb(zdev, &ap_msg, xcRB); |
af512ed0 RW |
780 | else |
781 | /* Signal pending. */ | |
5432114b | 782 | ap_cancel_message(zdev->ap_dev, &ap_msg); |
5432114b | 783 | out_free: |
3e75a902 | 784 | kzfree(ap_msg.message); |
5432114b RW |
785 | return rc; |
786 | } | |
787 | ||
2f7c8bd6 RW |
788 | /** |
789 | * The request distributor calls this function if it picked the PCIXCC/CEX2C | |
790 | * device to generate random data. | |
791 | * @zdev: pointer to zcrypt_device structure that identifies the | |
792 | * PCIXCC/CEX2C device to the request distributor | |
793 | * @buffer: pointer to a memory page to return random data | |
794 | */ | |
795 | ||
796 | static long zcrypt_pcixcc_rng(struct zcrypt_device *zdev, | |
797 | char *buffer) | |
798 | { | |
799 | struct ap_message ap_msg; | |
800 | struct response_type resp_type = { | |
801 | .type = PCIXCC_RESPONSE_TYPE_XCRB, | |
802 | }; | |
803 | int rc; | |
804 | ||
805 | ap_msg.message = kmalloc(PCIXCC_MAX_XCRB_MESSAGE_SIZE, GFP_KERNEL); | |
806 | if (!ap_msg.message) | |
807 | return -ENOMEM; | |
808 | ap_msg.psmid = (((unsigned long long) current->pid) << 32) + | |
809 | atomic_inc_return(&zcrypt_step); | |
810 | ap_msg.private = &resp_type; | |
811 | rng_type6CPRB_msgX(zdev->ap_dev, &ap_msg, ZCRYPT_RNG_BUFFER_SIZE); | |
812 | init_completion(&resp_type.work); | |
813 | ap_queue_message(zdev->ap_dev, &ap_msg); | |
814 | rc = wait_for_completion_interruptible(&resp_type.work); | |
815 | if (rc == 0) | |
816 | rc = convert_response_rng(zdev, &ap_msg, buffer); | |
817 | else | |
818 | /* Signal pending. */ | |
819 | ap_cancel_message(zdev->ap_dev, &ap_msg); | |
820 | kfree(ap_msg.message); | |
821 | return rc; | |
822 | } | |
823 | ||
6684af1a MS |
824 | /** |
825 | * The crypto operations for a PCIXCC/CEX2C card. | |
826 | */ | |
827 | static struct zcrypt_ops zcrypt_pcixcc_ops = { | |
828 | .rsa_modexpo = zcrypt_pcixcc_modexpo, | |
829 | .rsa_modexpo_crt = zcrypt_pcixcc_modexpo_crt, | |
5432114b | 830 | .send_cprb = zcrypt_pcixcc_send_cprb, |
6684af1a MS |
831 | }; |
832 | ||
2f7c8bd6 RW |
833 | static struct zcrypt_ops zcrypt_pcixcc_with_rng_ops = { |
834 | .rsa_modexpo = zcrypt_pcixcc_modexpo, | |
835 | .rsa_modexpo_crt = zcrypt_pcixcc_modexpo_crt, | |
836 | .send_cprb = zcrypt_pcixcc_send_cprb, | |
837 | .rng = zcrypt_pcixcc_rng, | |
838 | }; | |
839 | ||
6684af1a MS |
840 | /** |
841 | * Micro-code detection function. Its sends a message to a pcixcc card | |
842 | * to find out the microcode level. | |
843 | * @ap_dev: pointer to the AP device. | |
844 | */ | |
845 | static int zcrypt_pcixcc_mcl(struct ap_device *ap_dev) | |
846 | { | |
847 | static unsigned char msg[] = { | |
848 | 0x00,0x06,0x00,0x00,0x00,0x00,0x00,0x00, | |
849 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
850 | 0x00,0x00,0x00,0x58,0x00,0x00,0x00,0x00, | |
851 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
852 | 0x43,0x41,0x00,0x00,0x00,0x00,0x00,0x00, | |
853 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
854 | 0x00,0x00,0x00,0x00,0x50,0x4B,0x00,0x00, | |
855 | 0x00,0x00,0x01,0xC4,0x00,0x00,0x00,0x00, | |
856 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
857 | 0x00,0x00,0x07,0x24,0x00,0x00,0x00,0x00, | |
858 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
859 | 0x00,0xDC,0x02,0x00,0x00,0x00,0x54,0x32, | |
860 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE8, | |
861 | 0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x24, | |
862 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
863 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
864 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
865 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
866 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
867 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
868 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
869 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
870 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
871 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
872 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
873 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
874 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
875 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
876 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
877 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
878 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
879 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
880 | 0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x00, | |
881 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
882 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
883 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
884 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
885 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
886 | 0x00,0x00,0x00,0x00,0x50,0x4B,0x00,0x0A, | |
887 | 0x4D,0x52,0x50,0x20,0x20,0x20,0x20,0x20, | |
888 | 0x00,0x42,0x00,0x01,0x02,0x03,0x04,0x05, | |
889 | 0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D, | |
890 | 0x0E,0x0F,0x00,0x11,0x22,0x33,0x44,0x55, | |
891 | 0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD, | |
892 | 0xEE,0xFF,0xFF,0xEE,0xDD,0xCC,0xBB,0xAA, | |
893 | 0x99,0x88,0x77,0x66,0x55,0x44,0x33,0x22, | |
894 | 0x11,0x00,0x01,0x23,0x45,0x67,0x89,0xAB, | |
895 | 0xCD,0xEF,0xFE,0xDC,0xBA,0x98,0x76,0x54, | |
896 | 0x32,0x10,0x00,0x9A,0x00,0x98,0x00,0x00, | |
897 | 0x1E,0x00,0x00,0x94,0x00,0x00,0x00,0x00, | |
898 | 0x04,0x00,0x00,0x8C,0x00,0x00,0x00,0x40, | |
899 | 0x02,0x00,0x00,0x40,0xBA,0xE8,0x23,0x3C, | |
900 | 0x75,0xF3,0x91,0x61,0xD6,0x73,0x39,0xCF, | |
901 | 0x7B,0x6D,0x8E,0x61,0x97,0x63,0x9E,0xD9, | |
902 | 0x60,0x55,0xD6,0xC7,0xEF,0xF8,0x1E,0x63, | |
903 | 0x95,0x17,0xCC,0x28,0x45,0x60,0x11,0xC5, | |
904 | 0xC4,0x4E,0x66,0xC6,0xE6,0xC3,0xDE,0x8A, | |
905 | 0x19,0x30,0xCF,0x0E,0xD7,0xAA,0xDB,0x01, | |
906 | 0xD8,0x00,0xBB,0x8F,0x39,0x9F,0x64,0x28, | |
907 | 0xF5,0x7A,0x77,0x49,0xCC,0x6B,0xA3,0x91, | |
908 | 0x97,0x70,0xE7,0x60,0x1E,0x39,0xE1,0xE5, | |
909 | 0x33,0xE1,0x15,0x63,0x69,0x08,0x80,0x4C, | |
910 | 0x67,0xC4,0x41,0x8F,0x48,0xDF,0x26,0x98, | |
911 | 0xF1,0xD5,0x8D,0x88,0xD9,0x6A,0xA4,0x96, | |
912 | 0xC5,0x84,0xD9,0x30,0x49,0x67,0x7D,0x19, | |
913 | 0xB1,0xB3,0x45,0x4D,0xB2,0x53,0x9A,0x47, | |
914 | 0x3C,0x7C,0x55,0xBF,0xCC,0x85,0x00,0x36, | |
915 | 0xF1,0x3D,0x93,0x53 | |
916 | }; | |
917 | unsigned long long psmid; | |
918 | struct CPRBX *cprbx; | |
919 | char *reply; | |
920 | int rc, i; | |
921 | ||
922 | reply = (void *) get_zeroed_page(GFP_KERNEL); | |
923 | if (!reply) | |
924 | return -ENOMEM; | |
925 | ||
926 | rc = ap_send(ap_dev->qid, 0x0102030405060708ULL, msg, sizeof(msg)); | |
927 | if (rc) | |
928 | goto out_free; | |
929 | ||
930 | /* Wait for the test message to complete. */ | |
931 | for (i = 0; i < 6; i++) { | |
932 | mdelay(300); | |
933 | rc = ap_recv(ap_dev->qid, &psmid, reply, 4096); | |
934 | if (rc == 0 && psmid == 0x0102030405060708ULL) | |
935 | break; | |
936 | } | |
937 | ||
938 | if (i >= 6) { | |
939 | /* Got no answer. */ | |
940 | rc = -ENODEV; | |
941 | goto out_free; | |
942 | } | |
943 | ||
944 | cprbx = (struct CPRBX *) (reply + 48); | |
945 | if (cprbx->ccp_rtcode == 8 && cprbx->ccp_rscode == 33) | |
946 | rc = ZCRYPT_PCIXCC_MCL2; | |
947 | else | |
948 | rc = ZCRYPT_PCIXCC_MCL3; | |
949 | out_free: | |
950 | free_page((unsigned long) reply); | |
951 | return rc; | |
952 | } | |
953 | ||
2f7c8bd6 RW |
954 | /** |
955 | * Large random number detection function. Its sends a message to a pcixcc | |
956 | * card to find out if large random numbers are supported. | |
957 | * @ap_dev: pointer to the AP device. | |
958 | * | |
959 | * Returns 1 if large random numbers are supported, 0 if not and < 0 on error. | |
960 | */ | |
961 | static int zcrypt_pcixcc_rng_supported(struct ap_device *ap_dev) | |
962 | { | |
963 | struct ap_message ap_msg; | |
964 | unsigned long long psmid; | |
965 | struct { | |
966 | struct type86_hdr hdr; | |
967 | struct type86_fmt2_ext fmt2; | |
968 | struct CPRBX cprbx; | |
969 | } __attribute__((packed)) *reply; | |
970 | int rc, i; | |
971 | ||
972 | ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL); | |
973 | if (!ap_msg.message) | |
974 | return -ENOMEM; | |
975 | ||
976 | rng_type6CPRB_msgX(ap_dev, &ap_msg, 4); | |
977 | rc = ap_send(ap_dev->qid, 0x0102030405060708ULL, ap_msg.message, | |
978 | ap_msg.length); | |
979 | if (rc) | |
980 | goto out_free; | |
981 | ||
982 | /* Wait for the test message to complete. */ | |
983 | for (i = 0; i < 2 * HZ; i++) { | |
984 | msleep(1000 / HZ); | |
985 | rc = ap_recv(ap_dev->qid, &psmid, ap_msg.message, 4096); | |
986 | if (rc == 0 && psmid == 0x0102030405060708ULL) | |
987 | break; | |
988 | } | |
989 | ||
990 | if (i >= 2 * HZ) { | |
991 | /* Got no answer. */ | |
992 | rc = -ENODEV; | |
993 | goto out_free; | |
994 | } | |
995 | ||
996 | reply = ap_msg.message; | |
997 | if (reply->cprbx.ccp_rtcode == 0 && reply->cprbx.ccp_rscode == 0) | |
998 | rc = 1; | |
999 | else | |
1000 | rc = 0; | |
1001 | out_free: | |
1002 | free_page((unsigned long) ap_msg.message); | |
1003 | return rc; | |
1004 | } | |
1005 | ||
6684af1a MS |
1006 | /** |
1007 | * Probe function for PCIXCC/CEX2C cards. It always accepts the AP device | |
1008 | * since the bus_match already checked the hardware type. The PCIXCC | |
1009 | * cards come in two flavours: micro code level 2 and micro code level 3. | |
1010 | * This is checked by sending a test message to the device. | |
1011 | * @ap_dev: pointer to the AP device. | |
1012 | */ | |
1013 | static int zcrypt_pcixcc_probe(struct ap_device *ap_dev) | |
1014 | { | |
1015 | struct zcrypt_device *zdev; | |
1016 | int rc; | |
1017 | ||
1018 | zdev = zcrypt_device_alloc(PCIXCC_MAX_RESPONSE_SIZE); | |
1019 | if (!zdev) | |
1020 | return -ENOMEM; | |
1021 | zdev->ap_dev = ap_dev; | |
6684af1a MS |
1022 | zdev->online = 1; |
1023 | if (ap_dev->device_type == AP_DEVICE_TYPE_PCIXCC) { | |
1024 | rc = zcrypt_pcixcc_mcl(ap_dev); | |
1025 | if (rc < 0) { | |
1026 | zcrypt_device_free(zdev); | |
1027 | return rc; | |
1028 | } | |
1029 | zdev->user_space_type = rc; | |
1030 | if (rc == ZCRYPT_PCIXCC_MCL2) { | |
1031 | zdev->type_string = "PCIXCC_MCL2"; | |
1032 | zdev->speed_rating = PCIXCC_MCL2_SPEED_RATING; | |
1033 | zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD; | |
1034 | zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE; | |
1035 | } else { | |
1036 | zdev->type_string = "PCIXCC_MCL3"; | |
1037 | zdev->speed_rating = PCIXCC_MCL3_SPEED_RATING; | |
1038 | zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE; | |
1039 | zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE; | |
1040 | } | |
1041 | } else { | |
1042 | zdev->user_space_type = ZCRYPT_CEX2C; | |
1043 | zdev->type_string = "CEX2C"; | |
1044 | zdev->speed_rating = CEX2C_SPEED_RATING; | |
1045 | zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE; | |
1046 | zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE; | |
1047 | } | |
2f7c8bd6 RW |
1048 | rc = zcrypt_pcixcc_rng_supported(ap_dev); |
1049 | if (rc < 0) { | |
1050 | zcrypt_device_free(zdev); | |
1051 | return rc; | |
1052 | } | |
1053 | if (rc) | |
1054 | zdev->ops = &zcrypt_pcixcc_with_rng_ops; | |
1055 | else | |
1056 | zdev->ops = &zcrypt_pcixcc_ops; | |
6684af1a MS |
1057 | ap_dev->reply = &zdev->reply; |
1058 | ap_dev->private = zdev; | |
1059 | rc = zcrypt_device_register(zdev); | |
1060 | if (rc) | |
1061 | goto out_free; | |
1062 | return 0; | |
1063 | ||
1064 | out_free: | |
1065 | ap_dev->private = NULL; | |
1066 | zcrypt_device_free(zdev); | |
1067 | return rc; | |
1068 | } | |
1069 | ||
1070 | /** | |
1071 | * This is called to remove the extended PCIXCC/CEX2C driver information | |
1072 | * if an AP device is removed. | |
1073 | */ | |
1074 | static void zcrypt_pcixcc_remove(struct ap_device *ap_dev) | |
1075 | { | |
1076 | struct zcrypt_device *zdev = ap_dev->private; | |
1077 | ||
1078 | zcrypt_device_unregister(zdev); | |
1079 | } | |
1080 | ||
1081 | int __init zcrypt_pcixcc_init(void) | |
1082 | { | |
1083 | return ap_driver_register(&zcrypt_pcixcc_driver, THIS_MODULE, "pcixcc"); | |
1084 | } | |
1085 | ||
1086 | void zcrypt_pcixcc_exit(void) | |
1087 | { | |
1088 | ap_driver_unregister(&zcrypt_pcixcc_driver); | |
1089 | } | |
1090 | ||
1091 | #ifndef CONFIG_ZCRYPT_MONOLITHIC | |
1092 | module_init(zcrypt_pcixcc_init); | |
1093 | module_exit(zcrypt_pcixcc_exit); | |
1094 | #endif |