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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> | |
5a0e3ad6 | 33 | #include <linux/slab.h> |
60063497 | 34 | #include <linux/atomic.h> |
6684af1a MS |
35 | #include <asm/uaccess.h> |
36 | ||
37 | #include "ap_bus.h" | |
38 | #include "zcrypt_api.h" | |
39 | #include "zcrypt_error.h" | |
40 | #include "zcrypt_pcicc.h" | |
41 | #include "zcrypt_pcixcc.h" | |
42 | #include "zcrypt_cca_key.h" | |
43 | ||
44 | #define PCIXCC_MIN_MOD_SIZE 16 /* 128 bits */ | |
45 | #define PCIXCC_MIN_MOD_SIZE_OLD 64 /* 512 bits */ | |
46 | #define PCIXCC_MAX_MOD_SIZE 256 /* 2048 bits */ | |
8e89b6be | 47 | #define CEX3C_MIN_MOD_SIZE PCIXCC_MIN_MOD_SIZE |
2ade1fab | 48 | #define CEX3C_MAX_MOD_SIZE 512 /* 4096 bits */ |
6684af1a | 49 | |
18278dff | 50 | #define PCIXCC_MCL2_SPEED_RATING 7870 |
6684af1a | 51 | #define PCIXCC_MCL3_SPEED_RATING 7870 |
18278dff | 52 | #define CEX2C_SPEED_RATING 7000 |
2ade1fab | 53 | #define CEX3C_SPEED_RATING 6500 |
6684af1a MS |
54 | |
55 | #define PCIXCC_MAX_ICA_MESSAGE_SIZE 0x77c /* max size type6 v2 crt message */ | |
56 | #define PCIXCC_MAX_ICA_RESPONSE_SIZE 0x77c /* max size type86 v2 reply */ | |
57 | ||
58 | #define PCIXCC_MAX_XCRB_MESSAGE_SIZE (12*1024) | |
59 | #define PCIXCC_MAX_XCRB_RESPONSE_SIZE PCIXCC_MAX_XCRB_MESSAGE_SIZE | |
60 | #define PCIXCC_MAX_XCRB_DATA_SIZE (11*1024) | |
61 | #define PCIXCC_MAX_XCRB_REPLY_SIZE (5*1024) | |
62 | ||
63 | #define PCIXCC_MAX_RESPONSE_SIZE PCIXCC_MAX_XCRB_RESPONSE_SIZE | |
64 | ||
65 | #define PCIXCC_CLEANUP_TIME (15*HZ) | |
66 | ||
5432114b RW |
67 | #define CEIL4(x) ((((x)+3)/4)*4) |
68 | ||
69 | struct response_type { | |
70 | struct completion work; | |
71 | int type; | |
72 | }; | |
73 | #define PCIXCC_RESPONSE_TYPE_ICA 0 | |
74 | #define PCIXCC_RESPONSE_TYPE_XCRB 1 | |
75 | ||
6684af1a MS |
76 | static struct ap_device_id zcrypt_pcixcc_ids[] = { |
77 | { AP_DEVICE(AP_DEVICE_TYPE_PCIXCC) }, | |
78 | { AP_DEVICE(AP_DEVICE_TYPE_CEX2C) }, | |
ffda4f71 | 79 | { AP_DEVICE(AP_DEVICE_TYPE_CEX3C) }, |
6684af1a MS |
80 | { /* end of list */ }, |
81 | }; | |
82 | ||
83 | #ifndef CONFIG_ZCRYPT_MONOLITHIC | |
84 | MODULE_DEVICE_TABLE(ap, zcrypt_pcixcc_ids); | |
85 | MODULE_AUTHOR("IBM Corporation"); | |
86 | MODULE_DESCRIPTION("PCIXCC Cryptographic Coprocessor device driver, " | |
87 | "Copyright 2001, 2006 IBM Corporation"); | |
88 | MODULE_LICENSE("GPL"); | |
89 | #endif | |
90 | ||
91 | static int zcrypt_pcixcc_probe(struct ap_device *ap_dev); | |
92 | static void zcrypt_pcixcc_remove(struct ap_device *ap_dev); | |
93 | static void zcrypt_pcixcc_receive(struct ap_device *, struct ap_message *, | |
94 | struct ap_message *); | |
95 | ||
96 | static struct ap_driver zcrypt_pcixcc_driver = { | |
97 | .probe = zcrypt_pcixcc_probe, | |
98 | .remove = zcrypt_pcixcc_remove, | |
99 | .receive = zcrypt_pcixcc_receive, | |
100 | .ids = zcrypt_pcixcc_ids, | |
af512ed0 | 101 | .request_timeout = PCIXCC_CLEANUP_TIME, |
6684af1a MS |
102 | }; |
103 | ||
104 | /** | |
105 | * The following is used to initialize the CPRBX passed to the PCIXCC/CEX2C | |
106 | * card in a type6 message. The 3 fields that must be filled in at execution | |
107 | * time are req_parml, rpl_parml and usage_domain. | |
108 | * Everything about this interface is ascii/big-endian, since the | |
109 | * device does *not* have 'Intel inside'. | |
110 | * | |
111 | * The CPRBX is followed immediately by the parm block. | |
112 | * The parm block contains: | |
113 | * - function code ('PD' 0x5044 or 'PK' 0x504B) | |
114 | * - rule block (one of:) | |
115 | * + 0x000A 'PKCS-1.2' (MCL2 'PD') | |
116 | * + 0x000A 'ZERO-PAD' (MCL2 'PK') | |
117 | * + 0x000A 'ZERO-PAD' (MCL3 'PD' or CEX2C 'PD') | |
118 | * + 0x000A 'MRP ' (MCL3 'PK' or CEX2C 'PK') | |
119 | * - VUD block | |
120 | */ | |
121 | static struct CPRBX static_cprbx = { | |
122 | .cprb_len = 0x00DC, | |
123 | .cprb_ver_id = 0x02, | |
124 | .func_id = {0x54,0x32}, | |
125 | }; | |
126 | ||
127 | /** | |
128 | * Convert a ICAMEX message to a type6 MEX message. | |
129 | * | |
130 | * @zdev: crypto device pointer | |
131 | * @ap_msg: pointer to AP message | |
132 | * @mex: pointer to user input data | |
133 | * | |
134 | * Returns 0 on success or -EFAULT. | |
135 | */ | |
136 | static int ICAMEX_msg_to_type6MEX_msgX(struct zcrypt_device *zdev, | |
137 | struct ap_message *ap_msg, | |
138 | struct ica_rsa_modexpo *mex) | |
139 | { | |
140 | static struct type6_hdr static_type6_hdrX = { | |
141 | .type = 0x06, | |
142 | .offset1 = 0x00000058, | |
143 | .agent_id = {'C','A',}, | |
144 | .function_code = {'P','K'}, | |
145 | }; | |
146 | static struct function_and_rules_block static_pke_fnr = { | |
147 | .function_code = {'P','K'}, | |
148 | .ulen = 10, | |
149 | .only_rule = {'M','R','P',' ',' ',' ',' ',' '} | |
150 | }; | |
151 | static struct function_and_rules_block static_pke_fnr_MCL2 = { | |
152 | .function_code = {'P','K'}, | |
153 | .ulen = 10, | |
154 | .only_rule = {'Z','E','R','O','-','P','A','D'} | |
155 | }; | |
156 | struct { | |
157 | struct type6_hdr hdr; | |
158 | struct CPRBX cprbx; | |
159 | struct function_and_rules_block fr; | |
160 | unsigned short length; | |
161 | char text[0]; | |
162 | } __attribute__((packed)) *msg = ap_msg->message; | |
163 | int size; | |
164 | ||
165 | /* VUD.ciphertext */ | |
166 | msg->length = mex->inputdatalength + 2; | |
167 | if (copy_from_user(msg->text, mex->inputdata, mex->inputdatalength)) | |
168 | return -EFAULT; | |
169 | ||
170 | /* Set up key which is located after the variable length text. */ | |
171 | size = zcrypt_type6_mex_key_en(mex, msg->text+mex->inputdatalength, 1); | |
172 | if (size < 0) | |
173 | return size; | |
174 | size += sizeof(*msg) + mex->inputdatalength; | |
175 | ||
176 | /* message header, cprbx and f&r */ | |
177 | msg->hdr = static_type6_hdrX; | |
178 | msg->hdr.ToCardLen1 = size - sizeof(msg->hdr); | |
179 | msg->hdr.FromCardLen1 = PCIXCC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr); | |
180 | ||
181 | msg->cprbx = static_cprbx; | |
182 | msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid); | |
183 | msg->cprbx.rpl_msgbl = msg->hdr.FromCardLen1; | |
184 | ||
185 | msg->fr = (zdev->user_space_type == ZCRYPT_PCIXCC_MCL2) ? | |
186 | static_pke_fnr_MCL2 : static_pke_fnr; | |
187 | ||
188 | msg->cprbx.req_parml = size - sizeof(msg->hdr) - sizeof(msg->cprbx); | |
189 | ||
190 | ap_msg->length = size; | |
191 | return 0; | |
192 | } | |
193 | ||
194 | /** | |
195 | * Convert a ICACRT message to a type6 CRT message. | |
196 | * | |
197 | * @zdev: crypto device pointer | |
198 | * @ap_msg: pointer to AP message | |
199 | * @crt: pointer to user input data | |
200 | * | |
201 | * Returns 0 on success or -EFAULT. | |
202 | */ | |
203 | static int ICACRT_msg_to_type6CRT_msgX(struct zcrypt_device *zdev, | |
204 | struct ap_message *ap_msg, | |
205 | struct ica_rsa_modexpo_crt *crt) | |
206 | { | |
207 | static struct type6_hdr static_type6_hdrX = { | |
208 | .type = 0x06, | |
209 | .offset1 = 0x00000058, | |
210 | .agent_id = {'C','A',}, | |
211 | .function_code = {'P','D'}, | |
212 | }; | |
213 | static struct function_and_rules_block static_pkd_fnr = { | |
214 | .function_code = {'P','D'}, | |
215 | .ulen = 10, | |
216 | .only_rule = {'Z','E','R','O','-','P','A','D'} | |
217 | }; | |
218 | ||
219 | static struct function_and_rules_block static_pkd_fnr_MCL2 = { | |
220 | .function_code = {'P','D'}, | |
221 | .ulen = 10, | |
222 | .only_rule = {'P','K','C','S','-','1','.','2'} | |
223 | }; | |
224 | struct { | |
225 | struct type6_hdr hdr; | |
226 | struct CPRBX cprbx; | |
227 | struct function_and_rules_block fr; | |
228 | unsigned short length; | |
229 | char text[0]; | |
230 | } __attribute__((packed)) *msg = ap_msg->message; | |
231 | int size; | |
232 | ||
233 | /* VUD.ciphertext */ | |
234 | msg->length = crt->inputdatalength + 2; | |
235 | if (copy_from_user(msg->text, crt->inputdata, crt->inputdatalength)) | |
236 | return -EFAULT; | |
237 | ||
238 | /* Set up key which is located after the variable length text. */ | |
239 | size = zcrypt_type6_crt_key(crt, msg->text + crt->inputdatalength, 1); | |
240 | if (size < 0) | |
241 | return size; | |
242 | size += sizeof(*msg) + crt->inputdatalength; /* total size of msg */ | |
243 | ||
244 | /* message header, cprbx and f&r */ | |
245 | msg->hdr = static_type6_hdrX; | |
246 | msg->hdr.ToCardLen1 = size - sizeof(msg->hdr); | |
247 | msg->hdr.FromCardLen1 = PCIXCC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr); | |
248 | ||
249 | msg->cprbx = static_cprbx; | |
250 | msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid); | |
251 | msg->cprbx.req_parml = msg->cprbx.rpl_msgbl = | |
252 | size - sizeof(msg->hdr) - sizeof(msg->cprbx); | |
253 | ||
254 | msg->fr = (zdev->user_space_type == ZCRYPT_PCIXCC_MCL2) ? | |
255 | static_pkd_fnr_MCL2 : static_pkd_fnr; | |
256 | ||
257 | ap_msg->length = size; | |
258 | return 0; | |
259 | } | |
260 | ||
5432114b RW |
261 | /** |
262 | * Convert a XCRB message to a type6 CPRB message. | |
263 | * | |
264 | * @zdev: crypto device pointer | |
265 | * @ap_msg: pointer to AP message | |
266 | * @xcRB: pointer to user input data | |
267 | * | |
268 | * Returns 0 on success or -EFAULT. | |
269 | */ | |
270 | struct type86_fmt2_msg { | |
271 | struct type86_hdr hdr; | |
272 | struct type86_fmt2_ext fmt2; | |
273 | } __attribute__((packed)); | |
274 | ||
275 | static int XCRB_msg_to_type6CPRB_msgX(struct zcrypt_device *zdev, | |
276 | struct ap_message *ap_msg, | |
277 | struct ica_xcRB *xcRB) | |
278 | { | |
279 | static struct type6_hdr static_type6_hdrX = { | |
280 | .type = 0x06, | |
281 | .offset1 = 0x00000058, | |
282 | }; | |
283 | struct { | |
284 | struct type6_hdr hdr; | |
16db63fd | 285 | struct CPRBX cprbx; |
5432114b RW |
286 | } __attribute__((packed)) *msg = ap_msg->message; |
287 | ||
288 | int rcblen = CEIL4(xcRB->request_control_blk_length); | |
289 | int replylen; | |
290 | char *req_data = ap_msg->message + sizeof(struct type6_hdr) + rcblen; | |
291 | char *function_code; | |
292 | ||
293 | /* length checks */ | |
294 | ap_msg->length = sizeof(struct type6_hdr) + | |
295 | CEIL4(xcRB->request_control_blk_length) + | |
296 | xcRB->request_data_length; | |
1a89dd8f | 297 | if (ap_msg->length > PCIXCC_MAX_XCRB_MESSAGE_SIZE) |
5432114b | 298 | return -EFAULT; |
1a89dd8f | 299 | if (CEIL4(xcRB->reply_control_blk_length) > PCIXCC_MAX_XCRB_REPLY_SIZE) |
5432114b | 300 | return -EFAULT; |
1a89dd8f | 301 | if (CEIL4(xcRB->reply_data_length) > PCIXCC_MAX_XCRB_DATA_SIZE) |
5432114b | 302 | return -EFAULT; |
5432114b RW |
303 | replylen = CEIL4(xcRB->reply_control_blk_length) + |
304 | CEIL4(xcRB->reply_data_length) + | |
305 | sizeof(struct type86_fmt2_msg); | |
306 | if (replylen > PCIXCC_MAX_XCRB_RESPONSE_SIZE) { | |
5432114b RW |
307 | xcRB->reply_control_blk_length = PCIXCC_MAX_XCRB_RESPONSE_SIZE - |
308 | (sizeof(struct type86_fmt2_msg) + | |
309 | CEIL4(xcRB->reply_data_length)); | |
5432114b RW |
310 | } |
311 | ||
312 | /* prepare type6 header */ | |
313 | msg->hdr = static_type6_hdrX; | |
314 | memcpy(msg->hdr.agent_id , &(xcRB->agent_ID), sizeof(xcRB->agent_ID)); | |
315 | msg->hdr.ToCardLen1 = xcRB->request_control_blk_length; | |
316 | if (xcRB->request_data_length) { | |
317 | msg->hdr.offset2 = msg->hdr.offset1 + rcblen; | |
318 | msg->hdr.ToCardLen2 = xcRB->request_data_length; | |
319 | } | |
320 | msg->hdr.FromCardLen1 = xcRB->reply_control_blk_length; | |
321 | msg->hdr.FromCardLen2 = xcRB->reply_data_length; | |
322 | ||
323 | /* prepare CPRB */ | |
324 | if (copy_from_user(&(msg->cprbx), xcRB->request_control_blk_addr, | |
325 | xcRB->request_control_blk_length)) | |
326 | return -EFAULT; | |
327 | if (msg->cprbx.cprb_len + sizeof(msg->hdr.function_code) > | |
1a89dd8f | 328 | xcRB->request_control_blk_length) |
5432114b | 329 | return -EFAULT; |
5432114b RW |
330 | function_code = ((unsigned char *)&msg->cprbx) + msg->cprbx.cprb_len; |
331 | memcpy(msg->hdr.function_code, function_code, sizeof(msg->hdr.function_code)); | |
332 | ||
a6a5d73a FB |
333 | if (memcmp(function_code, "US", 2) == 0) |
334 | ap_msg->special = 1; | |
335 | else | |
336 | ap_msg->special = 0; | |
337 | ||
5432114b RW |
338 | /* copy data block */ |
339 | if (xcRB->request_data_length && | |
340 | copy_from_user(req_data, xcRB->request_data_address, | |
341 | xcRB->request_data_length)) | |
342 | return -EFAULT; | |
343 | return 0; | |
344 | } | |
345 | ||
2f7c8bd6 RW |
346 | /** |
347 | * Prepare a type6 CPRB message for random number generation | |
348 | * | |
349 | * @ap_dev: AP device pointer | |
350 | * @ap_msg: pointer to AP message | |
351 | */ | |
352 | static void rng_type6CPRB_msgX(struct ap_device *ap_dev, | |
353 | struct ap_message *ap_msg, | |
354 | unsigned random_number_length) | |
355 | { | |
356 | struct { | |
357 | struct type6_hdr hdr; | |
358 | struct CPRBX cprbx; | |
359 | char function_code[2]; | |
360 | short int rule_length; | |
361 | char rule[8]; | |
362 | short int verb_length; | |
363 | short int key_length; | |
364 | } __attribute__((packed)) *msg = ap_msg->message; | |
365 | static struct type6_hdr static_type6_hdrX = { | |
366 | .type = 0x06, | |
367 | .offset1 = 0x00000058, | |
368 | .agent_id = {'C', 'A'}, | |
369 | .function_code = {'R', 'L'}, | |
370 | .ToCardLen1 = sizeof *msg - sizeof(msg->hdr), | |
371 | .FromCardLen1 = sizeof *msg - sizeof(msg->hdr), | |
372 | }; | |
6458abc9 | 373 | static struct CPRBX local_cprbx = { |
2f7c8bd6 RW |
374 | .cprb_len = 0x00dc, |
375 | .cprb_ver_id = 0x02, | |
376 | .func_id = {0x54, 0x32}, | |
377 | .req_parml = sizeof *msg - sizeof(msg->hdr) - | |
378 | sizeof(msg->cprbx), | |
379 | .rpl_msgbl = sizeof *msg - sizeof(msg->hdr), | |
380 | }; | |
381 | ||
382 | msg->hdr = static_type6_hdrX; | |
383 | msg->hdr.FromCardLen2 = random_number_length, | |
6458abc9 | 384 | msg->cprbx = local_cprbx; |
2f7c8bd6 RW |
385 | msg->cprbx.rpl_datal = random_number_length, |
386 | msg->cprbx.domain = AP_QID_QUEUE(ap_dev->qid); | |
387 | memcpy(msg->function_code, msg->hdr.function_code, 0x02); | |
388 | msg->rule_length = 0x0a; | |
389 | memcpy(msg->rule, "RANDOM ", 8); | |
390 | msg->verb_length = 0x02; | |
391 | msg->key_length = 0x02; | |
392 | ap_msg->length = sizeof *msg; | |
393 | } | |
394 | ||
6684af1a MS |
395 | /** |
396 | * Copy results from a type 86 ICA reply message back to user space. | |
397 | * | |
398 | * @zdev: crypto device pointer | |
399 | * @reply: reply AP message. | |
400 | * @data: pointer to user output data | |
401 | * @length: size of user output data | |
402 | * | |
403 | * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error. | |
404 | */ | |
405 | struct type86x_reply { | |
406 | struct type86_hdr hdr; | |
407 | struct type86_fmt2_ext fmt2; | |
408 | struct CPRBX cprbx; | |
409 | unsigned char pad[4]; /* 4 byte function code/rules block ? */ | |
410 | unsigned short length; | |
411 | char text[0]; | |
412 | } __attribute__((packed)); | |
413 | ||
414 | static int convert_type86_ica(struct zcrypt_device *zdev, | |
415 | struct ap_message *reply, | |
416 | char __user *outputdata, | |
417 | unsigned int outputdatalength) | |
418 | { | |
419 | static unsigned char static_pad[] = { | |
420 | 0x00,0x02, | |
421 | 0x1B,0x7B,0x5D,0xB5,0x75,0x01,0x3D,0xFD, | |
422 | 0x8D,0xD1,0xC7,0x03,0x2D,0x09,0x23,0x57, | |
423 | 0x89,0x49,0xB9,0x3F,0xBB,0x99,0x41,0x5B, | |
424 | 0x75,0x21,0x7B,0x9D,0x3B,0x6B,0x51,0x39, | |
425 | 0xBB,0x0D,0x35,0xB9,0x89,0x0F,0x93,0xA5, | |
426 | 0x0B,0x47,0xF1,0xD3,0xBB,0xCB,0xF1,0x9D, | |
427 | 0x23,0x73,0x71,0xFF,0xF3,0xF5,0x45,0xFB, | |
428 | 0x61,0x29,0x23,0xFD,0xF1,0x29,0x3F,0x7F, | |
429 | 0x17,0xB7,0x1B,0xA9,0x19,0xBD,0x57,0xA9, | |
430 | 0xD7,0x95,0xA3,0xCB,0xED,0x1D,0xDB,0x45, | |
431 | 0x7D,0x11,0xD1,0x51,0x1B,0xED,0x71,0xE9, | |
432 | 0xB1,0xD1,0xAB,0xAB,0x21,0x2B,0x1B,0x9F, | |
433 | 0x3B,0x9F,0xF7,0xF7,0xBD,0x63,0xEB,0xAD, | |
434 | 0xDF,0xB3,0x6F,0x5B,0xDB,0x8D,0xA9,0x5D, | |
435 | 0xE3,0x7D,0x77,0x49,0x47,0xF5,0xA7,0xFD, | |
436 | 0xAB,0x2F,0x27,0x35,0x77,0xD3,0x49,0xC9, | |
437 | 0x09,0xEB,0xB1,0xF9,0xBF,0x4B,0xCB,0x2B, | |
438 | 0xEB,0xEB,0x05,0xFF,0x7D,0xC7,0x91,0x8B, | |
439 | 0x09,0x83,0xB9,0xB9,0x69,0x33,0x39,0x6B, | |
440 | 0x79,0x75,0x19,0xBF,0xBB,0x07,0x1D,0xBD, | |
441 | 0x29,0xBF,0x39,0x95,0x93,0x1D,0x35,0xC7, | |
442 | 0xC9,0x4D,0xE5,0x97,0x0B,0x43,0x9B,0xF1, | |
443 | 0x16,0x93,0x03,0x1F,0xA5,0xFB,0xDB,0xF3, | |
444 | 0x27,0x4F,0x27,0x61,0x05,0x1F,0xB9,0x23, | |
445 | 0x2F,0xC3,0x81,0xA9,0x23,0x71,0x55,0x55, | |
446 | 0xEB,0xED,0x41,0xE5,0xF3,0x11,0xF1,0x43, | |
447 | 0x69,0x03,0xBD,0x0B,0x37,0x0F,0x51,0x8F, | |
448 | 0x0B,0xB5,0x89,0x5B,0x67,0xA9,0xD9,0x4F, | |
449 | 0x01,0xF9,0x21,0x77,0x37,0x73,0x79,0xC5, | |
450 | 0x7F,0x51,0xC1,0xCF,0x97,0xA1,0x75,0xAD, | |
451 | 0x35,0x9D,0xD3,0xD3,0xA7,0x9D,0x5D,0x41, | |
452 | 0x6F,0x65,0x1B,0xCF,0xA9,0x87,0x91,0x09 | |
453 | }; | |
454 | struct type86x_reply *msg = reply->message; | |
455 | unsigned short service_rc, service_rs; | |
456 | unsigned int reply_len, pad_len; | |
457 | char *data; | |
458 | ||
459 | service_rc = msg->cprbx.ccp_rtcode; | |
460 | if (unlikely(service_rc != 0)) { | |
461 | service_rs = msg->cprbx.ccp_rscode; | |
1a89dd8f | 462 | if (service_rc == 8 && service_rs == 66) |
6684af1a | 463 | return -EINVAL; |
1a89dd8f | 464 | if (service_rc == 8 && service_rs == 65) |
6684af1a | 465 | return -EINVAL; |
1a89dd8f | 466 | if (service_rc == 8 && service_rs == 770) |
2af48080 | 467 | return -EINVAL; |
6684af1a | 468 | if (service_rc == 8 && service_rs == 783) { |
6684af1a MS |
469 | zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD; |
470 | return -EAGAIN; | |
471 | } | |
1a89dd8f | 472 | if (service_rc == 12 && service_rs == 769) |
2af48080 | 473 | return -EINVAL; |
19b123eb FB |
474 | if (service_rc == 8 && service_rs == 72) |
475 | return -EINVAL; | |
6684af1a MS |
476 | zdev->online = 0; |
477 | return -EAGAIN; /* repeat the request on a different device. */ | |
478 | } | |
479 | data = msg->text; | |
480 | reply_len = msg->length - 2; | |
481 | if (reply_len > outputdatalength) | |
482 | return -EINVAL; | |
1749a81d | 483 | /* |
6684af1a MS |
484 | * For all encipher requests, the length of the ciphertext (reply_len) |
485 | * will always equal the modulus length. For MEX decipher requests | |
486 | * the output needs to get padded. Minimum pad size is 10. | |
487 | * | |
488 | * Currently, the cases where padding will be added is for: | |
489 | * - PCIXCC_MCL2 using a CRT form token (since PKD didn't support | |
490 | * ZERO-PAD and CRT is only supported for PKD requests) | |
491 | * - PCICC, always | |
492 | */ | |
493 | pad_len = outputdatalength - reply_len; | |
494 | if (pad_len > 0) { | |
495 | if (pad_len < 10) | |
496 | return -EINVAL; | |
497 | /* 'restore' padding left in the PCICC/PCIXCC card. */ | |
498 | if (copy_to_user(outputdata, static_pad, pad_len - 1)) | |
499 | return -EFAULT; | |
500 | if (put_user(0, outputdata + pad_len - 1)) | |
501 | return -EFAULT; | |
502 | } | |
503 | /* Copy the crypto response to user space. */ | |
504 | if (copy_to_user(outputdata + pad_len, data, reply_len)) | |
505 | return -EFAULT; | |
506 | return 0; | |
507 | } | |
508 | ||
5432114b RW |
509 | /** |
510 | * Copy results from a type 86 XCRB reply message back to user space. | |
511 | * | |
512 | * @zdev: crypto device pointer | |
513 | * @reply: reply AP message. | |
514 | * @xcRB: pointer to XCRB | |
515 | * | |
516 | * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error. | |
517 | */ | |
518 | static int convert_type86_xcrb(struct zcrypt_device *zdev, | |
519 | struct ap_message *reply, | |
520 | struct ica_xcRB *xcRB) | |
521 | { | |
522 | struct type86_fmt2_msg *msg = reply->message; | |
523 | char *data = reply->message; | |
524 | ||
525 | /* Copy CPRB to user */ | |
526 | if (copy_to_user(xcRB->reply_control_blk_addr, | |
527 | data + msg->fmt2.offset1, msg->fmt2.count1)) | |
528 | return -EFAULT; | |
529 | xcRB->reply_control_blk_length = msg->fmt2.count1; | |
530 | ||
531 | /* Copy data buffer to user */ | |
532 | if (msg->fmt2.count2) | |
533 | if (copy_to_user(xcRB->reply_data_addr, | |
534 | data + msg->fmt2.offset2, msg->fmt2.count2)) | |
535 | return -EFAULT; | |
536 | xcRB->reply_data_length = msg->fmt2.count2; | |
537 | return 0; | |
538 | } | |
539 | ||
2f7c8bd6 RW |
540 | static int convert_type86_rng(struct zcrypt_device *zdev, |
541 | struct ap_message *reply, | |
542 | char *buffer) | |
543 | { | |
544 | struct { | |
545 | struct type86_hdr hdr; | |
546 | struct type86_fmt2_ext fmt2; | |
547 | struct CPRBX cprbx; | |
548 | } __attribute__((packed)) *msg = reply->message; | |
549 | char *data = reply->message; | |
550 | ||
1a89dd8f | 551 | if (msg->cprbx.ccp_rtcode != 0 || msg->cprbx.ccp_rscode != 0) |
2f7c8bd6 | 552 | return -EINVAL; |
2f7c8bd6 RW |
553 | memcpy(buffer, data + msg->fmt2.offset2, msg->fmt2.count2); |
554 | return msg->fmt2.count2; | |
555 | } | |
556 | ||
6684af1a MS |
557 | static int convert_response_ica(struct zcrypt_device *zdev, |
558 | struct ap_message *reply, | |
559 | char __user *outputdata, | |
560 | unsigned int outputdatalength) | |
561 | { | |
562 | struct type86x_reply *msg = reply->message; | |
563 | ||
564 | /* Response type byte is the second byte in the response. */ | |
565 | switch (((unsigned char *) reply->message)[1]) { | |
566 | case TYPE82_RSP_CODE: | |
567 | case TYPE88_RSP_CODE: | |
568 | return convert_error(zdev, reply); | |
569 | case TYPE86_RSP_CODE: | |
c2567f8f FB |
570 | if (msg->cprbx.ccp_rtcode && |
571 | (msg->cprbx.ccp_rscode == 0x14f) && | |
572 | (outputdatalength > 256)) { | |
573 | if (zdev->max_exp_bit_length <= 17) { | |
574 | zdev->max_exp_bit_length = 17; | |
575 | return -EAGAIN; | |
576 | } else | |
577 | return -EINVAL; | |
578 | } | |
6684af1a MS |
579 | if (msg->hdr.reply_code) |
580 | return convert_error(zdev, reply); | |
581 | if (msg->cprbx.cprb_ver_id == 0x02) | |
582 | return convert_type86_ica(zdev, reply, | |
583 | outputdata, outputdatalength); | |
942b7e65 FB |
584 | /* Fall through, no break, incorrect cprb version is an unknown |
585 | * response */ | |
6684af1a | 586 | default: /* Unknown response type, this should NEVER EVER happen */ |
6684af1a MS |
587 | zdev->online = 0; |
588 | return -EAGAIN; /* repeat the request on a different device. */ | |
589 | } | |
590 | } | |
591 | ||
5432114b RW |
592 | static int convert_response_xcrb(struct zcrypt_device *zdev, |
593 | struct ap_message *reply, | |
594 | struct ica_xcRB *xcRB) | |
595 | { | |
596 | struct type86x_reply *msg = reply->message; | |
597 | ||
598 | /* Response type byte is the second byte in the response. */ | |
599 | switch (((unsigned char *) reply->message)[1]) { | |
600 | case TYPE82_RSP_CODE: | |
601 | case TYPE88_RSP_CODE: | |
602 | xcRB->status = 0x0008044DL; /* HDD_InvalidParm */ | |
603 | return convert_error(zdev, reply); | |
604 | case TYPE86_RSP_CODE: | |
605 | if (msg->hdr.reply_code) { | |
606 | memcpy(&(xcRB->status), msg->fmt2.apfs, sizeof(u32)); | |
607 | return convert_error(zdev, reply); | |
608 | } | |
609 | if (msg->cprbx.cprb_ver_id == 0x02) | |
610 | return convert_type86_xcrb(zdev, reply, xcRB); | |
942b7e65 FB |
611 | /* Fall through, no break, incorrect cprb version is an unknown |
612 | * response */ | |
5432114b | 613 | default: /* Unknown response type, this should NEVER EVER happen */ |
5432114b RW |
614 | xcRB->status = 0x0008044DL; /* HDD_InvalidParm */ |
615 | zdev->online = 0; | |
616 | return -EAGAIN; /* repeat the request on a different device. */ | |
617 | } | |
618 | } | |
619 | ||
2f7c8bd6 RW |
620 | static int convert_response_rng(struct zcrypt_device *zdev, |
621 | struct ap_message *reply, | |
622 | char *data) | |
623 | { | |
624 | struct type86x_reply *msg = reply->message; | |
625 | ||
626 | switch (msg->hdr.type) { | |
627 | case TYPE82_RSP_CODE: | |
628 | case TYPE88_RSP_CODE: | |
629 | return -EINVAL; | |
630 | case TYPE86_RSP_CODE: | |
631 | if (msg->hdr.reply_code) | |
632 | return -EINVAL; | |
633 | if (msg->cprbx.cprb_ver_id == 0x02) | |
634 | return convert_type86_rng(zdev, reply, data); | |
942b7e65 FB |
635 | /* Fall through, no break, incorrect cprb version is an unknown |
636 | * response */ | |
2f7c8bd6 | 637 | default: /* Unknown response type, this should NEVER EVER happen */ |
2f7c8bd6 RW |
638 | zdev->online = 0; |
639 | return -EAGAIN; /* repeat the request on a different device. */ | |
640 | } | |
641 | } | |
642 | ||
6684af1a MS |
643 | /** |
644 | * This function is called from the AP bus code after a crypto request | |
645 | * "msg" has finished with the reply message "reply". | |
646 | * It is called from tasklet context. | |
647 | * @ap_dev: pointer to the AP device | |
648 | * @msg: pointer to the AP message | |
649 | * @reply: pointer to the AP reply message | |
650 | */ | |
651 | static void zcrypt_pcixcc_receive(struct ap_device *ap_dev, | |
652 | struct ap_message *msg, | |
653 | struct ap_message *reply) | |
654 | { | |
655 | static struct error_hdr error_reply = { | |
656 | .type = TYPE82_RSP_CODE, | |
657 | .reply_code = REP82_ERROR_MACHINE_FAILURE, | |
658 | }; | |
5432114b RW |
659 | struct response_type *resp_type = |
660 | (struct response_type *) msg->private; | |
21e7b2c4 | 661 | struct type86x_reply *t86r; |
6684af1a MS |
662 | int length; |
663 | ||
664 | /* Copy the reply message to the request message buffer. */ | |
21e7b2c4 | 665 | if (IS_ERR(reply)) { |
6684af1a | 666 | memcpy(msg->message, &error_reply, sizeof(error_reply)); |
21e7b2c4 JL |
667 | goto out; |
668 | } | |
669 | t86r = reply->message; | |
670 | if (t86r->hdr.type == TYPE86_RSP_CODE && | |
6684af1a | 671 | t86r->cprbx.cprb_ver_id == 0x02) { |
5432114b RW |
672 | switch (resp_type->type) { |
673 | case PCIXCC_RESPONSE_TYPE_ICA: | |
674 | length = sizeof(struct type86x_reply) | |
675 | + t86r->length - 2; | |
676 | length = min(PCIXCC_MAX_ICA_RESPONSE_SIZE, length); | |
677 | memcpy(msg->message, reply->message, length); | |
678 | break; | |
679 | case PCIXCC_RESPONSE_TYPE_XCRB: | |
680 | length = t86r->fmt2.offset2 + t86r->fmt2.count2; | |
681 | length = min(PCIXCC_MAX_XCRB_RESPONSE_SIZE, length); | |
682 | memcpy(msg->message, reply->message, length); | |
683 | break; | |
684 | default: | |
1a89dd8f | 685 | memcpy(msg->message, &error_reply, sizeof error_reply); |
5432114b | 686 | } |
6684af1a MS |
687 | } else |
688 | memcpy(msg->message, reply->message, sizeof error_reply); | |
21e7b2c4 | 689 | out: |
5432114b | 690 | complete(&(resp_type->work)); |
6684af1a MS |
691 | } |
692 | ||
693 | static atomic_t zcrypt_step = ATOMIC_INIT(0); | |
694 | ||
695 | /** | |
696 | * The request distributor calls this function if it picked the PCIXCC/CEX2C | |
697 | * device to handle a modexpo request. | |
698 | * @zdev: pointer to zcrypt_device structure that identifies the | |
699 | * PCIXCC/CEX2C device to the request distributor | |
700 | * @mex: pointer to the modexpo request buffer | |
701 | */ | |
702 | static long zcrypt_pcixcc_modexpo(struct zcrypt_device *zdev, | |
703 | struct ica_rsa_modexpo *mex) | |
704 | { | |
705 | struct ap_message ap_msg; | |
5432114b RW |
706 | struct response_type resp_type = { |
707 | .type = PCIXCC_RESPONSE_TYPE_ICA, | |
708 | }; | |
6684af1a MS |
709 | int rc; |
710 | ||
468ffddf | 711 | ap_init_message(&ap_msg); |
6684af1a MS |
712 | ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL); |
713 | if (!ap_msg.message) | |
714 | return -ENOMEM; | |
715 | ap_msg.psmid = (((unsigned long long) current->pid) << 32) + | |
716 | atomic_inc_return(&zcrypt_step); | |
5432114b | 717 | ap_msg.private = &resp_type; |
6684af1a MS |
718 | rc = ICAMEX_msg_to_type6MEX_msgX(zdev, &ap_msg, mex); |
719 | if (rc) | |
720 | goto out_free; | |
5432114b | 721 | init_completion(&resp_type.work); |
6684af1a | 722 | ap_queue_message(zdev->ap_dev, &ap_msg); |
af512ed0 RW |
723 | rc = wait_for_completion_interruptible(&resp_type.work); |
724 | if (rc == 0) | |
6684af1a MS |
725 | rc = convert_response_ica(zdev, &ap_msg, mex->outputdata, |
726 | mex->outputdatalength); | |
af512ed0 RW |
727 | else |
728 | /* Signal pending. */ | |
6684af1a | 729 | ap_cancel_message(zdev->ap_dev, &ap_msg); |
6684af1a MS |
730 | out_free: |
731 | free_page((unsigned long) ap_msg.message); | |
732 | return rc; | |
733 | } | |
734 | ||
735 | /** | |
736 | * The request distributor calls this function if it picked the PCIXCC/CEX2C | |
737 | * device to handle a modexpo_crt request. | |
738 | * @zdev: pointer to zcrypt_device structure that identifies the | |
739 | * PCIXCC/CEX2C device to the request distributor | |
740 | * @crt: pointer to the modexpoc_crt request buffer | |
741 | */ | |
742 | static long zcrypt_pcixcc_modexpo_crt(struct zcrypt_device *zdev, | |
743 | struct ica_rsa_modexpo_crt *crt) | |
744 | { | |
745 | struct ap_message ap_msg; | |
5432114b RW |
746 | struct response_type resp_type = { |
747 | .type = PCIXCC_RESPONSE_TYPE_ICA, | |
748 | }; | |
6684af1a MS |
749 | int rc; |
750 | ||
468ffddf | 751 | ap_init_message(&ap_msg); |
6684af1a MS |
752 | ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL); |
753 | if (!ap_msg.message) | |
754 | return -ENOMEM; | |
755 | ap_msg.psmid = (((unsigned long long) current->pid) << 32) + | |
756 | atomic_inc_return(&zcrypt_step); | |
5432114b | 757 | ap_msg.private = &resp_type; |
6684af1a MS |
758 | rc = ICACRT_msg_to_type6CRT_msgX(zdev, &ap_msg, crt); |
759 | if (rc) | |
760 | goto out_free; | |
5432114b | 761 | init_completion(&resp_type.work); |
6684af1a | 762 | ap_queue_message(zdev->ap_dev, &ap_msg); |
af512ed0 RW |
763 | rc = wait_for_completion_interruptible(&resp_type.work); |
764 | if (rc == 0) | |
6684af1a MS |
765 | rc = convert_response_ica(zdev, &ap_msg, crt->outputdata, |
766 | crt->outputdatalength); | |
af512ed0 RW |
767 | else |
768 | /* Signal pending. */ | |
6684af1a | 769 | ap_cancel_message(zdev->ap_dev, &ap_msg); |
6684af1a MS |
770 | out_free: |
771 | free_page((unsigned long) ap_msg.message); | |
772 | return rc; | |
773 | } | |
774 | ||
5432114b RW |
775 | /** |
776 | * The request distributor calls this function if it picked the PCIXCC/CEX2C | |
777 | * device to handle a send_cprb request. | |
778 | * @zdev: pointer to zcrypt_device structure that identifies the | |
779 | * PCIXCC/CEX2C device to the request distributor | |
780 | * @xcRB: pointer to the send_cprb request buffer | |
781 | */ | |
2b67fc46 HC |
782 | static long zcrypt_pcixcc_send_cprb(struct zcrypt_device *zdev, |
783 | struct ica_xcRB *xcRB) | |
5432114b RW |
784 | { |
785 | struct ap_message ap_msg; | |
786 | struct response_type resp_type = { | |
787 | .type = PCIXCC_RESPONSE_TYPE_XCRB, | |
788 | }; | |
789 | int rc; | |
790 | ||
468ffddf | 791 | ap_init_message(&ap_msg); |
5cbded58 | 792 | ap_msg.message = kmalloc(PCIXCC_MAX_XCRB_MESSAGE_SIZE, GFP_KERNEL); |
5432114b RW |
793 | if (!ap_msg.message) |
794 | return -ENOMEM; | |
795 | ap_msg.psmid = (((unsigned long long) current->pid) << 32) + | |
796 | atomic_inc_return(&zcrypt_step); | |
797 | ap_msg.private = &resp_type; | |
798 | rc = XCRB_msg_to_type6CPRB_msgX(zdev, &ap_msg, xcRB); | |
799 | if (rc) | |
800 | goto out_free; | |
801 | init_completion(&resp_type.work); | |
802 | ap_queue_message(zdev->ap_dev, &ap_msg); | |
af512ed0 RW |
803 | rc = wait_for_completion_interruptible(&resp_type.work); |
804 | if (rc == 0) | |
5432114b | 805 | rc = convert_response_xcrb(zdev, &ap_msg, xcRB); |
af512ed0 RW |
806 | else |
807 | /* Signal pending. */ | |
5432114b | 808 | ap_cancel_message(zdev->ap_dev, &ap_msg); |
5432114b | 809 | out_free: |
3e75a902 | 810 | kzfree(ap_msg.message); |
5432114b RW |
811 | return rc; |
812 | } | |
813 | ||
2f7c8bd6 RW |
814 | /** |
815 | * The request distributor calls this function if it picked the PCIXCC/CEX2C | |
816 | * device to generate random data. | |
817 | * @zdev: pointer to zcrypt_device structure that identifies the | |
818 | * PCIXCC/CEX2C device to the request distributor | |
819 | * @buffer: pointer to a memory page to return random data | |
820 | */ | |
821 | ||
822 | static long zcrypt_pcixcc_rng(struct zcrypt_device *zdev, | |
823 | char *buffer) | |
824 | { | |
825 | struct ap_message ap_msg; | |
826 | struct response_type resp_type = { | |
827 | .type = PCIXCC_RESPONSE_TYPE_XCRB, | |
828 | }; | |
829 | int rc; | |
830 | ||
468ffddf | 831 | ap_init_message(&ap_msg); |
2f7c8bd6 RW |
832 | ap_msg.message = kmalloc(PCIXCC_MAX_XCRB_MESSAGE_SIZE, GFP_KERNEL); |
833 | if (!ap_msg.message) | |
834 | return -ENOMEM; | |
835 | ap_msg.psmid = (((unsigned long long) current->pid) << 32) + | |
836 | atomic_inc_return(&zcrypt_step); | |
837 | ap_msg.private = &resp_type; | |
838 | rng_type6CPRB_msgX(zdev->ap_dev, &ap_msg, ZCRYPT_RNG_BUFFER_SIZE); | |
839 | init_completion(&resp_type.work); | |
840 | ap_queue_message(zdev->ap_dev, &ap_msg); | |
841 | rc = wait_for_completion_interruptible(&resp_type.work); | |
842 | if (rc == 0) | |
843 | rc = convert_response_rng(zdev, &ap_msg, buffer); | |
844 | else | |
845 | /* Signal pending. */ | |
846 | ap_cancel_message(zdev->ap_dev, &ap_msg); | |
847 | kfree(ap_msg.message); | |
848 | return rc; | |
849 | } | |
850 | ||
6684af1a MS |
851 | /** |
852 | * The crypto operations for a PCIXCC/CEX2C card. | |
853 | */ | |
854 | static struct zcrypt_ops zcrypt_pcixcc_ops = { | |
855 | .rsa_modexpo = zcrypt_pcixcc_modexpo, | |
856 | .rsa_modexpo_crt = zcrypt_pcixcc_modexpo_crt, | |
5432114b | 857 | .send_cprb = zcrypt_pcixcc_send_cprb, |
6684af1a MS |
858 | }; |
859 | ||
2f7c8bd6 RW |
860 | static struct zcrypt_ops zcrypt_pcixcc_with_rng_ops = { |
861 | .rsa_modexpo = zcrypt_pcixcc_modexpo, | |
862 | .rsa_modexpo_crt = zcrypt_pcixcc_modexpo_crt, | |
863 | .send_cprb = zcrypt_pcixcc_send_cprb, | |
864 | .rng = zcrypt_pcixcc_rng, | |
865 | }; | |
866 | ||
6684af1a MS |
867 | /** |
868 | * Micro-code detection function. Its sends a message to a pcixcc card | |
869 | * to find out the microcode level. | |
870 | * @ap_dev: pointer to the AP device. | |
871 | */ | |
872 | static int zcrypt_pcixcc_mcl(struct ap_device *ap_dev) | |
873 | { | |
874 | static unsigned char msg[] = { | |
875 | 0x00,0x06,0x00,0x00,0x00,0x00,0x00,0x00, | |
876 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
877 | 0x00,0x00,0x00,0x58,0x00,0x00,0x00,0x00, | |
878 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
879 | 0x43,0x41,0x00,0x00,0x00,0x00,0x00,0x00, | |
880 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
881 | 0x00,0x00,0x00,0x00,0x50,0x4B,0x00,0x00, | |
882 | 0x00,0x00,0x01,0xC4,0x00,0x00,0x00,0x00, | |
883 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
884 | 0x00,0x00,0x07,0x24,0x00,0x00,0x00,0x00, | |
885 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
886 | 0x00,0xDC,0x02,0x00,0x00,0x00,0x54,0x32, | |
887 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE8, | |
888 | 0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x24, | |
889 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
890 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
891 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
892 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
893 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
894 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
895 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
896 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
897 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
898 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
899 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
900 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
901 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
902 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
903 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
904 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
905 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
906 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
907 | 0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x00, | |
908 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
909 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
910 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
911 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
912 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
913 | 0x00,0x00,0x00,0x00,0x50,0x4B,0x00,0x0A, | |
914 | 0x4D,0x52,0x50,0x20,0x20,0x20,0x20,0x20, | |
915 | 0x00,0x42,0x00,0x01,0x02,0x03,0x04,0x05, | |
916 | 0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D, | |
917 | 0x0E,0x0F,0x00,0x11,0x22,0x33,0x44,0x55, | |
918 | 0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD, | |
919 | 0xEE,0xFF,0xFF,0xEE,0xDD,0xCC,0xBB,0xAA, | |
920 | 0x99,0x88,0x77,0x66,0x55,0x44,0x33,0x22, | |
921 | 0x11,0x00,0x01,0x23,0x45,0x67,0x89,0xAB, | |
922 | 0xCD,0xEF,0xFE,0xDC,0xBA,0x98,0x76,0x54, | |
923 | 0x32,0x10,0x00,0x9A,0x00,0x98,0x00,0x00, | |
924 | 0x1E,0x00,0x00,0x94,0x00,0x00,0x00,0x00, | |
925 | 0x04,0x00,0x00,0x8C,0x00,0x00,0x00,0x40, | |
926 | 0x02,0x00,0x00,0x40,0xBA,0xE8,0x23,0x3C, | |
927 | 0x75,0xF3,0x91,0x61,0xD6,0x73,0x39,0xCF, | |
928 | 0x7B,0x6D,0x8E,0x61,0x97,0x63,0x9E,0xD9, | |
929 | 0x60,0x55,0xD6,0xC7,0xEF,0xF8,0x1E,0x63, | |
930 | 0x95,0x17,0xCC,0x28,0x45,0x60,0x11,0xC5, | |
931 | 0xC4,0x4E,0x66,0xC6,0xE6,0xC3,0xDE,0x8A, | |
932 | 0x19,0x30,0xCF,0x0E,0xD7,0xAA,0xDB,0x01, | |
933 | 0xD8,0x00,0xBB,0x8F,0x39,0x9F,0x64,0x28, | |
934 | 0xF5,0x7A,0x77,0x49,0xCC,0x6B,0xA3,0x91, | |
935 | 0x97,0x70,0xE7,0x60,0x1E,0x39,0xE1,0xE5, | |
936 | 0x33,0xE1,0x15,0x63,0x69,0x08,0x80,0x4C, | |
937 | 0x67,0xC4,0x41,0x8F,0x48,0xDF,0x26,0x98, | |
938 | 0xF1,0xD5,0x8D,0x88,0xD9,0x6A,0xA4,0x96, | |
939 | 0xC5,0x84,0xD9,0x30,0x49,0x67,0x7D,0x19, | |
940 | 0xB1,0xB3,0x45,0x4D,0xB2,0x53,0x9A,0x47, | |
941 | 0x3C,0x7C,0x55,0xBF,0xCC,0x85,0x00,0x36, | |
942 | 0xF1,0x3D,0x93,0x53 | |
943 | }; | |
944 | unsigned long long psmid; | |
945 | struct CPRBX *cprbx; | |
946 | char *reply; | |
947 | int rc, i; | |
948 | ||
949 | reply = (void *) get_zeroed_page(GFP_KERNEL); | |
950 | if (!reply) | |
951 | return -ENOMEM; | |
952 | ||
953 | rc = ap_send(ap_dev->qid, 0x0102030405060708ULL, msg, sizeof(msg)); | |
954 | if (rc) | |
955 | goto out_free; | |
956 | ||
957 | /* Wait for the test message to complete. */ | |
958 | for (i = 0; i < 6; i++) { | |
959 | mdelay(300); | |
960 | rc = ap_recv(ap_dev->qid, &psmid, reply, 4096); | |
961 | if (rc == 0 && psmid == 0x0102030405060708ULL) | |
962 | break; | |
963 | } | |
964 | ||
965 | if (i >= 6) { | |
966 | /* Got no answer. */ | |
967 | rc = -ENODEV; | |
968 | goto out_free; | |
969 | } | |
970 | ||
971 | cprbx = (struct CPRBX *) (reply + 48); | |
972 | if (cprbx->ccp_rtcode == 8 && cprbx->ccp_rscode == 33) | |
973 | rc = ZCRYPT_PCIXCC_MCL2; | |
974 | else | |
975 | rc = ZCRYPT_PCIXCC_MCL3; | |
976 | out_free: | |
977 | free_page((unsigned long) reply); | |
978 | return rc; | |
979 | } | |
980 | ||
2f7c8bd6 RW |
981 | /** |
982 | * Large random number detection function. Its sends a message to a pcixcc | |
983 | * card to find out if large random numbers are supported. | |
984 | * @ap_dev: pointer to the AP device. | |
985 | * | |
986 | * Returns 1 if large random numbers are supported, 0 if not and < 0 on error. | |
987 | */ | |
988 | static int zcrypt_pcixcc_rng_supported(struct ap_device *ap_dev) | |
989 | { | |
990 | struct ap_message ap_msg; | |
991 | unsigned long long psmid; | |
992 | struct { | |
993 | struct type86_hdr hdr; | |
994 | struct type86_fmt2_ext fmt2; | |
995 | struct CPRBX cprbx; | |
996 | } __attribute__((packed)) *reply; | |
997 | int rc, i; | |
998 | ||
468ffddf | 999 | ap_init_message(&ap_msg); |
2f7c8bd6 RW |
1000 | ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL); |
1001 | if (!ap_msg.message) | |
1002 | return -ENOMEM; | |
1003 | ||
1004 | rng_type6CPRB_msgX(ap_dev, &ap_msg, 4); | |
1005 | rc = ap_send(ap_dev->qid, 0x0102030405060708ULL, ap_msg.message, | |
1006 | ap_msg.length); | |
1007 | if (rc) | |
1008 | goto out_free; | |
1009 | ||
1010 | /* Wait for the test message to complete. */ | |
1011 | for (i = 0; i < 2 * HZ; i++) { | |
1012 | msleep(1000 / HZ); | |
1013 | rc = ap_recv(ap_dev->qid, &psmid, ap_msg.message, 4096); | |
1014 | if (rc == 0 && psmid == 0x0102030405060708ULL) | |
1015 | break; | |
1016 | } | |
1017 | ||
1018 | if (i >= 2 * HZ) { | |
1019 | /* Got no answer. */ | |
1020 | rc = -ENODEV; | |
1021 | goto out_free; | |
1022 | } | |
1023 | ||
1024 | reply = ap_msg.message; | |
1025 | if (reply->cprbx.ccp_rtcode == 0 && reply->cprbx.ccp_rscode == 0) | |
1026 | rc = 1; | |
1027 | else | |
1028 | rc = 0; | |
1029 | out_free: | |
1030 | free_page((unsigned long) ap_msg.message); | |
1031 | return rc; | |
1032 | } | |
1033 | ||
6684af1a MS |
1034 | /** |
1035 | * Probe function for PCIXCC/CEX2C cards. It always accepts the AP device | |
1036 | * since the bus_match already checked the hardware type. The PCIXCC | |
1037 | * cards come in two flavours: micro code level 2 and micro code level 3. | |
1038 | * This is checked by sending a test message to the device. | |
1039 | * @ap_dev: pointer to the AP device. | |
1040 | */ | |
1041 | static int zcrypt_pcixcc_probe(struct ap_device *ap_dev) | |
1042 | { | |
1043 | struct zcrypt_device *zdev; | |
8e89b6be | 1044 | int rc = 0; |
6684af1a MS |
1045 | |
1046 | zdev = zcrypt_device_alloc(PCIXCC_MAX_RESPONSE_SIZE); | |
1047 | if (!zdev) | |
1048 | return -ENOMEM; | |
1049 | zdev->ap_dev = ap_dev; | |
6684af1a | 1050 | zdev->online = 1; |
8e89b6be FB |
1051 | switch (ap_dev->device_type) { |
1052 | case AP_DEVICE_TYPE_PCIXCC: | |
6684af1a MS |
1053 | rc = zcrypt_pcixcc_mcl(ap_dev); |
1054 | if (rc < 0) { | |
1055 | zcrypt_device_free(zdev); | |
1056 | return rc; | |
1057 | } | |
1058 | zdev->user_space_type = rc; | |
1059 | if (rc == ZCRYPT_PCIXCC_MCL2) { | |
1060 | zdev->type_string = "PCIXCC_MCL2"; | |
1061 | zdev->speed_rating = PCIXCC_MCL2_SPEED_RATING; | |
1062 | zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD; | |
1063 | zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE; | |
c2567f8f | 1064 | zdev->max_exp_bit_length = PCIXCC_MAX_MOD_SIZE; |
6684af1a MS |
1065 | } else { |
1066 | zdev->type_string = "PCIXCC_MCL3"; | |
1067 | zdev->speed_rating = PCIXCC_MCL3_SPEED_RATING; | |
1068 | zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE; | |
1069 | zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE; | |
c2567f8f | 1070 | zdev->max_exp_bit_length = PCIXCC_MAX_MOD_SIZE; |
6684af1a | 1071 | } |
8e89b6be FB |
1072 | break; |
1073 | case AP_DEVICE_TYPE_CEX2C: | |
6684af1a MS |
1074 | zdev->user_space_type = ZCRYPT_CEX2C; |
1075 | zdev->type_string = "CEX2C"; | |
1076 | zdev->speed_rating = CEX2C_SPEED_RATING; | |
1077 | zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE; | |
1078 | zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE; | |
c2567f8f | 1079 | zdev->max_exp_bit_length = PCIXCC_MAX_MOD_SIZE; |
8e89b6be FB |
1080 | break; |
1081 | case AP_DEVICE_TYPE_CEX3C: | |
1082 | zdev->user_space_type = ZCRYPT_CEX3C; | |
1083 | zdev->type_string = "CEX3C"; | |
1084 | zdev->speed_rating = CEX3C_SPEED_RATING; | |
1085 | zdev->min_mod_size = CEX3C_MIN_MOD_SIZE; | |
1086 | zdev->max_mod_size = CEX3C_MAX_MOD_SIZE; | |
c2567f8f | 1087 | zdev->max_exp_bit_length = CEX3C_MAX_MOD_SIZE; |
8e89b6be FB |
1088 | break; |
1089 | default: | |
1090 | goto out_free; | |
6684af1a | 1091 | } |
8e89b6be | 1092 | |
2f7c8bd6 RW |
1093 | rc = zcrypt_pcixcc_rng_supported(ap_dev); |
1094 | if (rc < 0) { | |
1095 | zcrypt_device_free(zdev); | |
1096 | return rc; | |
1097 | } | |
1098 | if (rc) | |
1099 | zdev->ops = &zcrypt_pcixcc_with_rng_ops; | |
1100 | else | |
1101 | zdev->ops = &zcrypt_pcixcc_ops; | |
6684af1a MS |
1102 | ap_dev->reply = &zdev->reply; |
1103 | ap_dev->private = zdev; | |
1104 | rc = zcrypt_device_register(zdev); | |
1105 | if (rc) | |
1106 | goto out_free; | |
1107 | return 0; | |
1108 | ||
1109 | out_free: | |
1110 | ap_dev->private = NULL; | |
1111 | zcrypt_device_free(zdev); | |
1112 | return rc; | |
1113 | } | |
1114 | ||
1115 | /** | |
1116 | * This is called to remove the extended PCIXCC/CEX2C driver information | |
1117 | * if an AP device is removed. | |
1118 | */ | |
1119 | static void zcrypt_pcixcc_remove(struct ap_device *ap_dev) | |
1120 | { | |
1121 | struct zcrypt_device *zdev = ap_dev->private; | |
1122 | ||
1123 | zcrypt_device_unregister(zdev); | |
1124 | } | |
1125 | ||
1126 | int __init zcrypt_pcixcc_init(void) | |
1127 | { | |
1128 | return ap_driver_register(&zcrypt_pcixcc_driver, THIS_MODULE, "pcixcc"); | |
1129 | } | |
1130 | ||
1131 | void zcrypt_pcixcc_exit(void) | |
1132 | { | |
1133 | ap_driver_unregister(&zcrypt_pcixcc_driver); | |
1134 | } | |
1135 | ||
1136 | #ifndef CONFIG_ZCRYPT_MONOLITHIC | |
1137 | module_init(zcrypt_pcixcc_init); | |
1138 | module_exit(zcrypt_pcixcc_exit); | |
1139 | #endif |