diff options
author | Holger Dengler <hd@linux.vnet.ibm.com> | 2012-08-28 10:45:36 -0400 |
---|---|---|
committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-09-26 09:44:55 -0400 |
commit | 5e55a488c87aa6cc269b04bfec99e835f03b2c2d (patch) | |
tree | 59d848f6cf6a67a520a3bd482a853b2955cf97d2 /drivers/s390/crypto/zcrypt_pcixcc.c | |
parent | b26bd9413c8359bd9f5c9bd1b789a10ebd2bb484 (diff) |
s390/zcrypt: Separate msgtype implementation from card modules.
Msgtype implementations are now separated from card specific modules
and can be dynamically registered. Existing msgtype implementations
are restructured in modules.
Signed-off-by: Holger Dengler <hd@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/crypto/zcrypt_pcixcc.c')
-rw-r--r-- | drivers/s390/crypto/zcrypt_pcixcc.c | 781 |
1 files changed, 13 insertions, 768 deletions
diff --git a/drivers/s390/crypto/zcrypt_pcixcc.c b/drivers/s390/crypto/zcrypt_pcixcc.c index ccb4f8b60c75..c7275e303a0d 100644 --- a/drivers/s390/crypto/zcrypt_pcixcc.c +++ b/drivers/s390/crypto/zcrypt_pcixcc.c | |||
@@ -1,13 +1,14 @@ | |||
1 | /* | 1 | /* |
2 | * zcrypt 2.1.0 | 2 | * zcrypt 2.1.0 |
3 | * | 3 | * |
4 | * Copyright IBM Corp. 2001, 2006 | 4 | * Copyright IBM Corp. 2001, 2012 |
5 | * Author(s): Robert Burroughs | 5 | * Author(s): Robert Burroughs |
6 | * Eric Rossman (edrossma@us.ibm.com) | 6 | * Eric Rossman (edrossma@us.ibm.com) |
7 | * | 7 | * |
8 | * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) | 8 | * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) |
9 | * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com> | 9 | * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com> |
10 | * Ralph Wuerthner <rwuerthn@de.ibm.com> | 10 | * Ralph Wuerthner <rwuerthn@de.ibm.com> |
11 | * MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com> | ||
11 | * | 12 | * |
12 | * This program is free software; you can redistribute it and/or modify | 13 | * This program is free software; you can redistribute it and/or modify |
13 | * it under the terms of the GNU General Public License as published by | 14 | * it under the terms of the GNU General Public License as published by |
@@ -35,9 +36,10 @@ | |||
35 | #include "ap_bus.h" | 36 | #include "ap_bus.h" |
36 | #include "zcrypt_api.h" | 37 | #include "zcrypt_api.h" |
37 | #include "zcrypt_error.h" | 38 | #include "zcrypt_error.h" |
38 | #include "zcrypt_pcicc.h" | 39 | #include "zcrypt_msgtype6.h" |
39 | #include "zcrypt_pcixcc.h" | 40 | #include "zcrypt_pcixcc.h" |
40 | #include "zcrypt_cca_key.h" | 41 | #include "zcrypt_cca_key.h" |
42 | #include "zcrypt_msgtype6.h" | ||
41 | 43 | ||
42 | #define PCIXCC_MIN_MOD_SIZE 16 /* 128 bits */ | 44 | #define PCIXCC_MIN_MOD_SIZE 16 /* 128 bits */ |
43 | #define PCIXCC_MIN_MOD_SIZE_OLD 64 /* 512 bits */ | 45 | #define PCIXCC_MIN_MOD_SIZE_OLD 64 /* 512 bits */ |
@@ -75,14 +77,12 @@ static struct ap_device_id zcrypt_pcixcc_ids[] = { | |||
75 | 77 | ||
76 | MODULE_DEVICE_TABLE(ap, zcrypt_pcixcc_ids); | 78 | MODULE_DEVICE_TABLE(ap, zcrypt_pcixcc_ids); |
77 | MODULE_AUTHOR("IBM Corporation"); | 79 | MODULE_AUTHOR("IBM Corporation"); |
78 | MODULE_DESCRIPTION("PCIXCC Cryptographic Coprocessor device driver, " | 80 | MODULE_DESCRIPTION("PCIXCC Cryptographic Coprocessor device driver, " \ |
79 | "Copyright IBM Corp. 2001, 2006"); | 81 | "Copyright IBM Corp. 2001, 2012"); |
80 | MODULE_LICENSE("GPL"); | 82 | MODULE_LICENSE("GPL"); |
81 | 83 | ||
82 | static int zcrypt_pcixcc_probe(struct ap_device *ap_dev); | 84 | static int zcrypt_pcixcc_probe(struct ap_device *ap_dev); |
83 | static void zcrypt_pcixcc_remove(struct ap_device *ap_dev); | 85 | static void zcrypt_pcixcc_remove(struct ap_device *ap_dev); |
84 | static void zcrypt_pcixcc_receive(struct ap_device *, struct ap_message *, | ||
85 | struct ap_message *); | ||
86 | 86 | ||
87 | static struct ap_driver zcrypt_pcixcc_driver = { | 87 | static struct ap_driver zcrypt_pcixcc_driver = { |
88 | .probe = zcrypt_pcixcc_probe, | 88 | .probe = zcrypt_pcixcc_probe, |
@@ -92,766 +92,6 @@ static struct ap_driver zcrypt_pcixcc_driver = { | |||
92 | }; | 92 | }; |
93 | 93 | ||
94 | /** | 94 | /** |
95 | * The following is used to initialize the CPRBX passed to the PCIXCC/CEX2C | ||
96 | * card in a type6 message. The 3 fields that must be filled in at execution | ||
97 | * time are req_parml, rpl_parml and usage_domain. | ||
98 | * Everything about this interface is ascii/big-endian, since the | ||
99 | * device does *not* have 'Intel inside'. | ||
100 | * | ||
101 | * The CPRBX is followed immediately by the parm block. | ||
102 | * The parm block contains: | ||
103 | * - function code ('PD' 0x5044 or 'PK' 0x504B) | ||
104 | * - rule block (one of:) | ||
105 | * + 0x000A 'PKCS-1.2' (MCL2 'PD') | ||
106 | * + 0x000A 'ZERO-PAD' (MCL2 'PK') | ||
107 | * + 0x000A 'ZERO-PAD' (MCL3 'PD' or CEX2C 'PD') | ||
108 | * + 0x000A 'MRP ' (MCL3 'PK' or CEX2C 'PK') | ||
109 | * - VUD block | ||
110 | */ | ||
111 | static struct CPRBX static_cprbx = { | ||
112 | .cprb_len = 0x00DC, | ||
113 | .cprb_ver_id = 0x02, | ||
114 | .func_id = {0x54,0x32}, | ||
115 | }; | ||
116 | |||
117 | /** | ||
118 | * Convert a ICAMEX message to a type6 MEX message. | ||
119 | * | ||
120 | * @zdev: crypto device pointer | ||
121 | * @ap_msg: pointer to AP message | ||
122 | * @mex: pointer to user input data | ||
123 | * | ||
124 | * Returns 0 on success or -EFAULT. | ||
125 | */ | ||
126 | static int ICAMEX_msg_to_type6MEX_msgX(struct zcrypt_device *zdev, | ||
127 | struct ap_message *ap_msg, | ||
128 | struct ica_rsa_modexpo *mex) | ||
129 | { | ||
130 | static struct type6_hdr static_type6_hdrX = { | ||
131 | .type = 0x06, | ||
132 | .offset1 = 0x00000058, | ||
133 | .agent_id = {'C','A',}, | ||
134 | .function_code = {'P','K'}, | ||
135 | }; | ||
136 | static struct function_and_rules_block static_pke_fnr = { | ||
137 | .function_code = {'P','K'}, | ||
138 | .ulen = 10, | ||
139 | .only_rule = {'M','R','P',' ',' ',' ',' ',' '} | ||
140 | }; | ||
141 | static struct function_and_rules_block static_pke_fnr_MCL2 = { | ||
142 | .function_code = {'P','K'}, | ||
143 | .ulen = 10, | ||
144 | .only_rule = {'Z','E','R','O','-','P','A','D'} | ||
145 | }; | ||
146 | struct { | ||
147 | struct type6_hdr hdr; | ||
148 | struct CPRBX cprbx; | ||
149 | struct function_and_rules_block fr; | ||
150 | unsigned short length; | ||
151 | char text[0]; | ||
152 | } __attribute__((packed)) *msg = ap_msg->message; | ||
153 | int size; | ||
154 | |||
155 | /* VUD.ciphertext */ | ||
156 | msg->length = mex->inputdatalength + 2; | ||
157 | if (copy_from_user(msg->text, mex->inputdata, mex->inputdatalength)) | ||
158 | return -EFAULT; | ||
159 | |||
160 | /* Set up key which is located after the variable length text. */ | ||
161 | size = zcrypt_type6_mex_key_en(mex, msg->text+mex->inputdatalength, 1); | ||
162 | if (size < 0) | ||
163 | return size; | ||
164 | size += sizeof(*msg) + mex->inputdatalength; | ||
165 | |||
166 | /* message header, cprbx and f&r */ | ||
167 | msg->hdr = static_type6_hdrX; | ||
168 | msg->hdr.ToCardLen1 = size - sizeof(msg->hdr); | ||
169 | msg->hdr.FromCardLen1 = PCIXCC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr); | ||
170 | |||
171 | msg->cprbx = static_cprbx; | ||
172 | msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid); | ||
173 | msg->cprbx.rpl_msgbl = msg->hdr.FromCardLen1; | ||
174 | |||
175 | msg->fr = (zdev->user_space_type == ZCRYPT_PCIXCC_MCL2) ? | ||
176 | static_pke_fnr_MCL2 : static_pke_fnr; | ||
177 | |||
178 | msg->cprbx.req_parml = size - sizeof(msg->hdr) - sizeof(msg->cprbx); | ||
179 | |||
180 | ap_msg->length = size; | ||
181 | return 0; | ||
182 | } | ||
183 | |||
184 | /** | ||
185 | * Convert a ICACRT message to a type6 CRT message. | ||
186 | * | ||
187 | * @zdev: crypto device pointer | ||
188 | * @ap_msg: pointer to AP message | ||
189 | * @crt: pointer to user input data | ||
190 | * | ||
191 | * Returns 0 on success or -EFAULT. | ||
192 | */ | ||
193 | static int ICACRT_msg_to_type6CRT_msgX(struct zcrypt_device *zdev, | ||
194 | struct ap_message *ap_msg, | ||
195 | struct ica_rsa_modexpo_crt *crt) | ||
196 | { | ||
197 | static struct type6_hdr static_type6_hdrX = { | ||
198 | .type = 0x06, | ||
199 | .offset1 = 0x00000058, | ||
200 | .agent_id = {'C','A',}, | ||
201 | .function_code = {'P','D'}, | ||
202 | }; | ||
203 | static struct function_and_rules_block static_pkd_fnr = { | ||
204 | .function_code = {'P','D'}, | ||
205 | .ulen = 10, | ||
206 | .only_rule = {'Z','E','R','O','-','P','A','D'} | ||
207 | }; | ||
208 | |||
209 | static struct function_and_rules_block static_pkd_fnr_MCL2 = { | ||
210 | .function_code = {'P','D'}, | ||
211 | .ulen = 10, | ||
212 | .only_rule = {'P','K','C','S','-','1','.','2'} | ||
213 | }; | ||
214 | struct { | ||
215 | struct type6_hdr hdr; | ||
216 | struct CPRBX cprbx; | ||
217 | struct function_and_rules_block fr; | ||
218 | unsigned short length; | ||
219 | char text[0]; | ||
220 | } __attribute__((packed)) *msg = ap_msg->message; | ||
221 | int size; | ||
222 | |||
223 | /* VUD.ciphertext */ | ||
224 | msg->length = crt->inputdatalength + 2; | ||
225 | if (copy_from_user(msg->text, crt->inputdata, crt->inputdatalength)) | ||
226 | return -EFAULT; | ||
227 | |||
228 | /* Set up key which is located after the variable length text. */ | ||
229 | size = zcrypt_type6_crt_key(crt, msg->text + crt->inputdatalength, 1); | ||
230 | if (size < 0) | ||
231 | return size; | ||
232 | size += sizeof(*msg) + crt->inputdatalength; /* total size of msg */ | ||
233 | |||
234 | /* message header, cprbx and f&r */ | ||
235 | msg->hdr = static_type6_hdrX; | ||
236 | msg->hdr.ToCardLen1 = size - sizeof(msg->hdr); | ||
237 | msg->hdr.FromCardLen1 = PCIXCC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr); | ||
238 | |||
239 | msg->cprbx = static_cprbx; | ||
240 | msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid); | ||
241 | msg->cprbx.req_parml = msg->cprbx.rpl_msgbl = | ||
242 | size - sizeof(msg->hdr) - sizeof(msg->cprbx); | ||
243 | |||
244 | msg->fr = (zdev->user_space_type == ZCRYPT_PCIXCC_MCL2) ? | ||
245 | static_pkd_fnr_MCL2 : static_pkd_fnr; | ||
246 | |||
247 | ap_msg->length = size; | ||
248 | return 0; | ||
249 | } | ||
250 | |||
251 | /** | ||
252 | * Convert a XCRB message to a type6 CPRB message. | ||
253 | * | ||
254 | * @zdev: crypto device pointer | ||
255 | * @ap_msg: pointer to AP message | ||
256 | * @xcRB: pointer to user input data | ||
257 | * | ||
258 | * Returns 0 on success or -EFAULT, -EINVAL. | ||
259 | */ | ||
260 | struct type86_fmt2_msg { | ||
261 | struct type86_hdr hdr; | ||
262 | struct type86_fmt2_ext fmt2; | ||
263 | } __attribute__((packed)); | ||
264 | |||
265 | static int XCRB_msg_to_type6CPRB_msgX(struct zcrypt_device *zdev, | ||
266 | struct ap_message *ap_msg, | ||
267 | struct ica_xcRB *xcRB) | ||
268 | { | ||
269 | static struct type6_hdr static_type6_hdrX = { | ||
270 | .type = 0x06, | ||
271 | .offset1 = 0x00000058, | ||
272 | }; | ||
273 | struct { | ||
274 | struct type6_hdr hdr; | ||
275 | struct CPRBX cprbx; | ||
276 | } __attribute__((packed)) *msg = ap_msg->message; | ||
277 | |||
278 | int rcblen = CEIL4(xcRB->request_control_blk_length); | ||
279 | int replylen; | ||
280 | char *req_data = ap_msg->message + sizeof(struct type6_hdr) + rcblen; | ||
281 | char *function_code; | ||
282 | |||
283 | /* length checks */ | ||
284 | ap_msg->length = sizeof(struct type6_hdr) + | ||
285 | CEIL4(xcRB->request_control_blk_length) + | ||
286 | xcRB->request_data_length; | ||
287 | if (ap_msg->length > PCIXCC_MAX_XCRB_MESSAGE_SIZE) | ||
288 | return -EINVAL; | ||
289 | replylen = sizeof(struct type86_fmt2_msg) + | ||
290 | CEIL4(xcRB->reply_control_blk_length) + | ||
291 | xcRB->reply_data_length; | ||
292 | if (replylen > PCIXCC_MAX_XCRB_MESSAGE_SIZE) | ||
293 | return -EINVAL; | ||
294 | |||
295 | /* prepare type6 header */ | ||
296 | msg->hdr = static_type6_hdrX; | ||
297 | memcpy(msg->hdr.agent_id , &(xcRB->agent_ID), sizeof(xcRB->agent_ID)); | ||
298 | msg->hdr.ToCardLen1 = xcRB->request_control_blk_length; | ||
299 | if (xcRB->request_data_length) { | ||
300 | msg->hdr.offset2 = msg->hdr.offset1 + rcblen; | ||
301 | msg->hdr.ToCardLen2 = xcRB->request_data_length; | ||
302 | } | ||
303 | msg->hdr.FromCardLen1 = xcRB->reply_control_blk_length; | ||
304 | msg->hdr.FromCardLen2 = xcRB->reply_data_length; | ||
305 | |||
306 | /* prepare CPRB */ | ||
307 | if (copy_from_user(&(msg->cprbx), xcRB->request_control_blk_addr, | ||
308 | xcRB->request_control_blk_length)) | ||
309 | return -EFAULT; | ||
310 | if (msg->cprbx.cprb_len + sizeof(msg->hdr.function_code) > | ||
311 | xcRB->request_control_blk_length) | ||
312 | return -EINVAL; | ||
313 | function_code = ((unsigned char *)&msg->cprbx) + msg->cprbx.cprb_len; | ||
314 | memcpy(msg->hdr.function_code, function_code, sizeof(msg->hdr.function_code)); | ||
315 | |||
316 | if (memcmp(function_code, "US", 2) == 0) | ||
317 | ap_msg->special = 1; | ||
318 | else | ||
319 | ap_msg->special = 0; | ||
320 | |||
321 | /* copy data block */ | ||
322 | if (xcRB->request_data_length && | ||
323 | copy_from_user(req_data, xcRB->request_data_address, | ||
324 | xcRB->request_data_length)) | ||
325 | return -EFAULT; | ||
326 | return 0; | ||
327 | } | ||
328 | |||
329 | /** | ||
330 | * Prepare a type6 CPRB message for random number generation | ||
331 | * | ||
332 | * @ap_dev: AP device pointer | ||
333 | * @ap_msg: pointer to AP message | ||
334 | */ | ||
335 | static void rng_type6CPRB_msgX(struct ap_device *ap_dev, | ||
336 | struct ap_message *ap_msg, | ||
337 | unsigned random_number_length) | ||
338 | { | ||
339 | struct { | ||
340 | struct type6_hdr hdr; | ||
341 | struct CPRBX cprbx; | ||
342 | char function_code[2]; | ||
343 | short int rule_length; | ||
344 | char rule[8]; | ||
345 | short int verb_length; | ||
346 | short int key_length; | ||
347 | } __attribute__((packed)) *msg = ap_msg->message; | ||
348 | static struct type6_hdr static_type6_hdrX = { | ||
349 | .type = 0x06, | ||
350 | .offset1 = 0x00000058, | ||
351 | .agent_id = {'C', 'A'}, | ||
352 | .function_code = {'R', 'L'}, | ||
353 | .ToCardLen1 = sizeof *msg - sizeof(msg->hdr), | ||
354 | .FromCardLen1 = sizeof *msg - sizeof(msg->hdr), | ||
355 | }; | ||
356 | static struct CPRBX local_cprbx = { | ||
357 | .cprb_len = 0x00dc, | ||
358 | .cprb_ver_id = 0x02, | ||
359 | .func_id = {0x54, 0x32}, | ||
360 | .req_parml = sizeof *msg - sizeof(msg->hdr) - | ||
361 | sizeof(msg->cprbx), | ||
362 | .rpl_msgbl = sizeof *msg - sizeof(msg->hdr), | ||
363 | }; | ||
364 | |||
365 | msg->hdr = static_type6_hdrX; | ||
366 | msg->hdr.FromCardLen2 = random_number_length, | ||
367 | msg->cprbx = local_cprbx; | ||
368 | msg->cprbx.rpl_datal = random_number_length, | ||
369 | msg->cprbx.domain = AP_QID_QUEUE(ap_dev->qid); | ||
370 | memcpy(msg->function_code, msg->hdr.function_code, 0x02); | ||
371 | msg->rule_length = 0x0a; | ||
372 | memcpy(msg->rule, "RANDOM ", 8); | ||
373 | msg->verb_length = 0x02; | ||
374 | msg->key_length = 0x02; | ||
375 | ap_msg->length = sizeof *msg; | ||
376 | } | ||
377 | |||
378 | /** | ||
379 | * Copy results from a type 86 ICA reply message back to user space. | ||
380 | * | ||
381 | * @zdev: crypto device pointer | ||
382 | * @reply: reply AP message. | ||
383 | * @data: pointer to user output data | ||
384 | * @length: size of user output data | ||
385 | * | ||
386 | * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error. | ||
387 | */ | ||
388 | struct type86x_reply { | ||
389 | struct type86_hdr hdr; | ||
390 | struct type86_fmt2_ext fmt2; | ||
391 | struct CPRBX cprbx; | ||
392 | unsigned char pad[4]; /* 4 byte function code/rules block ? */ | ||
393 | unsigned short length; | ||
394 | char text[0]; | ||
395 | } __attribute__((packed)); | ||
396 | |||
397 | static int convert_type86_ica(struct zcrypt_device *zdev, | ||
398 | struct ap_message *reply, | ||
399 | char __user *outputdata, | ||
400 | unsigned int outputdatalength) | ||
401 | { | ||
402 | static unsigned char static_pad[] = { | ||
403 | 0x00,0x02, | ||
404 | 0x1B,0x7B,0x5D,0xB5,0x75,0x01,0x3D,0xFD, | ||
405 | 0x8D,0xD1,0xC7,0x03,0x2D,0x09,0x23,0x57, | ||
406 | 0x89,0x49,0xB9,0x3F,0xBB,0x99,0x41,0x5B, | ||
407 | 0x75,0x21,0x7B,0x9D,0x3B,0x6B,0x51,0x39, | ||
408 | 0xBB,0x0D,0x35,0xB9,0x89,0x0F,0x93,0xA5, | ||
409 | 0x0B,0x47,0xF1,0xD3,0xBB,0xCB,0xF1,0x9D, | ||
410 | 0x23,0x73,0x71,0xFF,0xF3,0xF5,0x45,0xFB, | ||
411 | 0x61,0x29,0x23,0xFD,0xF1,0x29,0x3F,0x7F, | ||
412 | 0x17,0xB7,0x1B,0xA9,0x19,0xBD,0x57,0xA9, | ||
413 | 0xD7,0x95,0xA3,0xCB,0xED,0x1D,0xDB,0x45, | ||
414 | 0x7D,0x11,0xD1,0x51,0x1B,0xED,0x71,0xE9, | ||
415 | 0xB1,0xD1,0xAB,0xAB,0x21,0x2B,0x1B,0x9F, | ||
416 | 0x3B,0x9F,0xF7,0xF7,0xBD,0x63,0xEB,0xAD, | ||
417 | 0xDF,0xB3,0x6F,0x5B,0xDB,0x8D,0xA9,0x5D, | ||
418 | 0xE3,0x7D,0x77,0x49,0x47,0xF5,0xA7,0xFD, | ||
419 | 0xAB,0x2F,0x27,0x35,0x77,0xD3,0x49,0xC9, | ||
420 | 0x09,0xEB,0xB1,0xF9,0xBF,0x4B,0xCB,0x2B, | ||
421 | 0xEB,0xEB,0x05,0xFF,0x7D,0xC7,0x91,0x8B, | ||
422 | 0x09,0x83,0xB9,0xB9,0x69,0x33,0x39,0x6B, | ||
423 | 0x79,0x75,0x19,0xBF,0xBB,0x07,0x1D,0xBD, | ||
424 | 0x29,0xBF,0x39,0x95,0x93,0x1D,0x35,0xC7, | ||
425 | 0xC9,0x4D,0xE5,0x97,0x0B,0x43,0x9B,0xF1, | ||
426 | 0x16,0x93,0x03,0x1F,0xA5,0xFB,0xDB,0xF3, | ||
427 | 0x27,0x4F,0x27,0x61,0x05,0x1F,0xB9,0x23, | ||
428 | 0x2F,0xC3,0x81,0xA9,0x23,0x71,0x55,0x55, | ||
429 | 0xEB,0xED,0x41,0xE5,0xF3,0x11,0xF1,0x43, | ||
430 | 0x69,0x03,0xBD,0x0B,0x37,0x0F,0x51,0x8F, | ||
431 | 0x0B,0xB5,0x89,0x5B,0x67,0xA9,0xD9,0x4F, | ||
432 | 0x01,0xF9,0x21,0x77,0x37,0x73,0x79,0xC5, | ||
433 | 0x7F,0x51,0xC1,0xCF,0x97,0xA1,0x75,0xAD, | ||
434 | 0x35,0x9D,0xD3,0xD3,0xA7,0x9D,0x5D,0x41, | ||
435 | 0x6F,0x65,0x1B,0xCF,0xA9,0x87,0x91,0x09 | ||
436 | }; | ||
437 | struct type86x_reply *msg = reply->message; | ||
438 | unsigned short service_rc, service_rs; | ||
439 | unsigned int reply_len, pad_len; | ||
440 | char *data; | ||
441 | |||
442 | service_rc = msg->cprbx.ccp_rtcode; | ||
443 | if (unlikely(service_rc != 0)) { | ||
444 | service_rs = msg->cprbx.ccp_rscode; | ||
445 | if (service_rc == 8 && service_rs == 66) | ||
446 | return -EINVAL; | ||
447 | if (service_rc == 8 && service_rs == 65) | ||
448 | return -EINVAL; | ||
449 | if (service_rc == 8 && service_rs == 770) | ||
450 | return -EINVAL; | ||
451 | if (service_rc == 8 && service_rs == 783) { | ||
452 | zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD; | ||
453 | return -EAGAIN; | ||
454 | } | ||
455 | if (service_rc == 12 && service_rs == 769) | ||
456 | return -EINVAL; | ||
457 | if (service_rc == 8 && service_rs == 72) | ||
458 | return -EINVAL; | ||
459 | zdev->online = 0; | ||
460 | return -EAGAIN; /* repeat the request on a different device. */ | ||
461 | } | ||
462 | data = msg->text; | ||
463 | reply_len = msg->length - 2; | ||
464 | if (reply_len > outputdatalength) | ||
465 | return -EINVAL; | ||
466 | /* | ||
467 | * For all encipher requests, the length of the ciphertext (reply_len) | ||
468 | * will always equal the modulus length. For MEX decipher requests | ||
469 | * the output needs to get padded. Minimum pad size is 10. | ||
470 | * | ||
471 | * Currently, the cases where padding will be added is for: | ||
472 | * - PCIXCC_MCL2 using a CRT form token (since PKD didn't support | ||
473 | * ZERO-PAD and CRT is only supported for PKD requests) | ||
474 | * - PCICC, always | ||
475 | */ | ||
476 | pad_len = outputdatalength - reply_len; | ||
477 | if (pad_len > 0) { | ||
478 | if (pad_len < 10) | ||
479 | return -EINVAL; | ||
480 | /* 'restore' padding left in the PCICC/PCIXCC card. */ | ||
481 | if (copy_to_user(outputdata, static_pad, pad_len - 1)) | ||
482 | return -EFAULT; | ||
483 | if (put_user(0, outputdata + pad_len - 1)) | ||
484 | return -EFAULT; | ||
485 | } | ||
486 | /* Copy the crypto response to user space. */ | ||
487 | if (copy_to_user(outputdata + pad_len, data, reply_len)) | ||
488 | return -EFAULT; | ||
489 | return 0; | ||
490 | } | ||
491 | |||
492 | /** | ||
493 | * Copy results from a type 86 XCRB reply message back to user space. | ||
494 | * | ||
495 | * @zdev: crypto device pointer | ||
496 | * @reply: reply AP message. | ||
497 | * @xcRB: pointer to XCRB | ||
498 | * | ||
499 | * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error. | ||
500 | */ | ||
501 | static int convert_type86_xcrb(struct zcrypt_device *zdev, | ||
502 | struct ap_message *reply, | ||
503 | struct ica_xcRB *xcRB) | ||
504 | { | ||
505 | struct type86_fmt2_msg *msg = reply->message; | ||
506 | char *data = reply->message; | ||
507 | |||
508 | /* Copy CPRB to user */ | ||
509 | if (copy_to_user(xcRB->reply_control_blk_addr, | ||
510 | data + msg->fmt2.offset1, msg->fmt2.count1)) | ||
511 | return -EFAULT; | ||
512 | xcRB->reply_control_blk_length = msg->fmt2.count1; | ||
513 | |||
514 | /* Copy data buffer to user */ | ||
515 | if (msg->fmt2.count2) | ||
516 | if (copy_to_user(xcRB->reply_data_addr, | ||
517 | data + msg->fmt2.offset2, msg->fmt2.count2)) | ||
518 | return -EFAULT; | ||
519 | xcRB->reply_data_length = msg->fmt2.count2; | ||
520 | return 0; | ||
521 | } | ||
522 | |||
523 | static int convert_type86_rng(struct zcrypt_device *zdev, | ||
524 | struct ap_message *reply, | ||
525 | char *buffer) | ||
526 | { | ||
527 | struct { | ||
528 | struct type86_hdr hdr; | ||
529 | struct type86_fmt2_ext fmt2; | ||
530 | struct CPRBX cprbx; | ||
531 | } __attribute__((packed)) *msg = reply->message; | ||
532 | char *data = reply->message; | ||
533 | |||
534 | if (msg->cprbx.ccp_rtcode != 0 || msg->cprbx.ccp_rscode != 0) | ||
535 | return -EINVAL; | ||
536 | memcpy(buffer, data + msg->fmt2.offset2, msg->fmt2.count2); | ||
537 | return msg->fmt2.count2; | ||
538 | } | ||
539 | |||
540 | static int convert_response_ica(struct zcrypt_device *zdev, | ||
541 | struct ap_message *reply, | ||
542 | char __user *outputdata, | ||
543 | unsigned int outputdatalength) | ||
544 | { | ||
545 | struct type86x_reply *msg = reply->message; | ||
546 | |||
547 | /* Response type byte is the second byte in the response. */ | ||
548 | switch (((unsigned char *) reply->message)[1]) { | ||
549 | case TYPE82_RSP_CODE: | ||
550 | case TYPE88_RSP_CODE: | ||
551 | return convert_error(zdev, reply); | ||
552 | case TYPE86_RSP_CODE: | ||
553 | if (msg->cprbx.ccp_rtcode && | ||
554 | (msg->cprbx.ccp_rscode == 0x14f) && | ||
555 | (outputdatalength > 256)) { | ||
556 | if (zdev->max_exp_bit_length <= 17) { | ||
557 | zdev->max_exp_bit_length = 17; | ||
558 | return -EAGAIN; | ||
559 | } else | ||
560 | return -EINVAL; | ||
561 | } | ||
562 | if (msg->hdr.reply_code) | ||
563 | return convert_error(zdev, reply); | ||
564 | if (msg->cprbx.cprb_ver_id == 0x02) | ||
565 | return convert_type86_ica(zdev, reply, | ||
566 | outputdata, outputdatalength); | ||
567 | /* Fall through, no break, incorrect cprb version is an unknown | ||
568 | * response */ | ||
569 | default: /* Unknown response type, this should NEVER EVER happen */ | ||
570 | zdev->online = 0; | ||
571 | return -EAGAIN; /* repeat the request on a different device. */ | ||
572 | } | ||
573 | } | ||
574 | |||
575 | static int convert_response_xcrb(struct zcrypt_device *zdev, | ||
576 | struct ap_message *reply, | ||
577 | struct ica_xcRB *xcRB) | ||
578 | { | ||
579 | struct type86x_reply *msg = reply->message; | ||
580 | |||
581 | /* Response type byte is the second byte in the response. */ | ||
582 | switch (((unsigned char *) reply->message)[1]) { | ||
583 | case TYPE82_RSP_CODE: | ||
584 | case TYPE88_RSP_CODE: | ||
585 | xcRB->status = 0x0008044DL; /* HDD_InvalidParm */ | ||
586 | return convert_error(zdev, reply); | ||
587 | case TYPE86_RSP_CODE: | ||
588 | if (msg->hdr.reply_code) { | ||
589 | memcpy(&(xcRB->status), msg->fmt2.apfs, sizeof(u32)); | ||
590 | return convert_error(zdev, reply); | ||
591 | } | ||
592 | if (msg->cprbx.cprb_ver_id == 0x02) | ||
593 | return convert_type86_xcrb(zdev, reply, xcRB); | ||
594 | /* Fall through, no break, incorrect cprb version is an unknown | ||
595 | * response */ | ||
596 | default: /* Unknown response type, this should NEVER EVER happen */ | ||
597 | xcRB->status = 0x0008044DL; /* HDD_InvalidParm */ | ||
598 | zdev->online = 0; | ||
599 | return -EAGAIN; /* repeat the request on a different device. */ | ||
600 | } | ||
601 | } | ||
602 | |||
603 | static int convert_response_rng(struct zcrypt_device *zdev, | ||
604 | struct ap_message *reply, | ||
605 | char *data) | ||
606 | { | ||
607 | struct type86x_reply *msg = reply->message; | ||
608 | |||
609 | switch (msg->hdr.type) { | ||
610 | case TYPE82_RSP_CODE: | ||
611 | case TYPE88_RSP_CODE: | ||
612 | return -EINVAL; | ||
613 | case TYPE86_RSP_CODE: | ||
614 | if (msg->hdr.reply_code) | ||
615 | return -EINVAL; | ||
616 | if (msg->cprbx.cprb_ver_id == 0x02) | ||
617 | return convert_type86_rng(zdev, reply, data); | ||
618 | /* Fall through, no break, incorrect cprb version is an unknown | ||
619 | * response */ | ||
620 | default: /* Unknown response type, this should NEVER EVER happen */ | ||
621 | zdev->online = 0; | ||
622 | return -EAGAIN; /* repeat the request on a different device. */ | ||
623 | } | ||
624 | } | ||
625 | |||
626 | /** | ||
627 | * This function is called from the AP bus code after a crypto request | ||
628 | * "msg" has finished with the reply message "reply". | ||
629 | * It is called from tasklet context. | ||
630 | * @ap_dev: pointer to the AP device | ||
631 | * @msg: pointer to the AP message | ||
632 | * @reply: pointer to the AP reply message | ||
633 | */ | ||
634 | static void zcrypt_pcixcc_receive(struct ap_device *ap_dev, | ||
635 | struct ap_message *msg, | ||
636 | struct ap_message *reply) | ||
637 | { | ||
638 | static struct error_hdr error_reply = { | ||
639 | .type = TYPE82_RSP_CODE, | ||
640 | .reply_code = REP82_ERROR_MACHINE_FAILURE, | ||
641 | }; | ||
642 | struct response_type *resp_type = | ||
643 | (struct response_type *) msg->private; | ||
644 | struct type86x_reply *t86r; | ||
645 | int length; | ||
646 | |||
647 | /* Copy the reply message to the request message buffer. */ | ||
648 | if (IS_ERR(reply)) { | ||
649 | memcpy(msg->message, &error_reply, sizeof(error_reply)); | ||
650 | goto out; | ||
651 | } | ||
652 | t86r = reply->message; | ||
653 | if (t86r->hdr.type == TYPE86_RSP_CODE && | ||
654 | t86r->cprbx.cprb_ver_id == 0x02) { | ||
655 | switch (resp_type->type) { | ||
656 | case PCIXCC_RESPONSE_TYPE_ICA: | ||
657 | length = sizeof(struct type86x_reply) | ||
658 | + t86r->length - 2; | ||
659 | length = min(PCIXCC_MAX_ICA_RESPONSE_SIZE, length); | ||
660 | memcpy(msg->message, reply->message, length); | ||
661 | break; | ||
662 | case PCIXCC_RESPONSE_TYPE_XCRB: | ||
663 | length = t86r->fmt2.offset2 + t86r->fmt2.count2; | ||
664 | length = min(PCIXCC_MAX_XCRB_MESSAGE_SIZE, length); | ||
665 | memcpy(msg->message, reply->message, length); | ||
666 | break; | ||
667 | default: | ||
668 | memcpy(msg->message, &error_reply, sizeof error_reply); | ||
669 | } | ||
670 | } else | ||
671 | memcpy(msg->message, reply->message, sizeof error_reply); | ||
672 | out: | ||
673 | complete(&(resp_type->work)); | ||
674 | } | ||
675 | |||
676 | static atomic_t zcrypt_step = ATOMIC_INIT(0); | ||
677 | |||
678 | /** | ||
679 | * The request distributor calls this function if it picked the PCIXCC/CEX2C | ||
680 | * device to handle a modexpo request. | ||
681 | * @zdev: pointer to zcrypt_device structure that identifies the | ||
682 | * PCIXCC/CEX2C device to the request distributor | ||
683 | * @mex: pointer to the modexpo request buffer | ||
684 | */ | ||
685 | static long zcrypt_pcixcc_modexpo(struct zcrypt_device *zdev, | ||
686 | struct ica_rsa_modexpo *mex) | ||
687 | { | ||
688 | struct ap_message ap_msg; | ||
689 | struct response_type resp_type = { | ||
690 | .type = PCIXCC_RESPONSE_TYPE_ICA, | ||
691 | }; | ||
692 | int rc; | ||
693 | |||
694 | ap_init_message(&ap_msg); | ||
695 | ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL); | ||
696 | if (!ap_msg.message) | ||
697 | return -ENOMEM; | ||
698 | ap_msg.receive = zcrypt_pcixcc_receive; | ||
699 | ap_msg.psmid = (((unsigned long long) current->pid) << 32) + | ||
700 | atomic_inc_return(&zcrypt_step); | ||
701 | ap_msg.private = &resp_type; | ||
702 | rc = ICAMEX_msg_to_type6MEX_msgX(zdev, &ap_msg, mex); | ||
703 | if (rc) | ||
704 | goto out_free; | ||
705 | init_completion(&resp_type.work); | ||
706 | ap_queue_message(zdev->ap_dev, &ap_msg); | ||
707 | rc = wait_for_completion_interruptible(&resp_type.work); | ||
708 | if (rc == 0) | ||
709 | rc = convert_response_ica(zdev, &ap_msg, mex->outputdata, | ||
710 | mex->outputdatalength); | ||
711 | else | ||
712 | /* Signal pending. */ | ||
713 | ap_cancel_message(zdev->ap_dev, &ap_msg); | ||
714 | out_free: | ||
715 | free_page((unsigned long) ap_msg.message); | ||
716 | return rc; | ||
717 | } | ||
718 | |||
719 | /** | ||
720 | * The request distributor calls this function if it picked the PCIXCC/CEX2C | ||
721 | * device to handle a modexpo_crt request. | ||
722 | * @zdev: pointer to zcrypt_device structure that identifies the | ||
723 | * PCIXCC/CEX2C device to the request distributor | ||
724 | * @crt: pointer to the modexpoc_crt request buffer | ||
725 | */ | ||
726 | static long zcrypt_pcixcc_modexpo_crt(struct zcrypt_device *zdev, | ||
727 | struct ica_rsa_modexpo_crt *crt) | ||
728 | { | ||
729 | struct ap_message ap_msg; | ||
730 | struct response_type resp_type = { | ||
731 | .type = PCIXCC_RESPONSE_TYPE_ICA, | ||
732 | }; | ||
733 | int rc; | ||
734 | |||
735 | ap_init_message(&ap_msg); | ||
736 | ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL); | ||
737 | if (!ap_msg.message) | ||
738 | return -ENOMEM; | ||
739 | ap_msg.receive = zcrypt_pcixcc_receive; | ||
740 | ap_msg.psmid = (((unsigned long long) current->pid) << 32) + | ||
741 | atomic_inc_return(&zcrypt_step); | ||
742 | ap_msg.private = &resp_type; | ||
743 | rc = ICACRT_msg_to_type6CRT_msgX(zdev, &ap_msg, crt); | ||
744 | if (rc) | ||
745 | goto out_free; | ||
746 | init_completion(&resp_type.work); | ||
747 | ap_queue_message(zdev->ap_dev, &ap_msg); | ||
748 | rc = wait_for_completion_interruptible(&resp_type.work); | ||
749 | if (rc == 0) | ||
750 | rc = convert_response_ica(zdev, &ap_msg, crt->outputdata, | ||
751 | crt->outputdatalength); | ||
752 | else | ||
753 | /* Signal pending. */ | ||
754 | ap_cancel_message(zdev->ap_dev, &ap_msg); | ||
755 | out_free: | ||
756 | free_page((unsigned long) ap_msg.message); | ||
757 | return rc; | ||
758 | } | ||
759 | |||
760 | /** | ||
761 | * The request distributor calls this function if it picked the PCIXCC/CEX2C | ||
762 | * device to handle a send_cprb request. | ||
763 | * @zdev: pointer to zcrypt_device structure that identifies the | ||
764 | * PCIXCC/CEX2C device to the request distributor | ||
765 | * @xcRB: pointer to the send_cprb request buffer | ||
766 | */ | ||
767 | static long zcrypt_pcixcc_send_cprb(struct zcrypt_device *zdev, | ||
768 | struct ica_xcRB *xcRB) | ||
769 | { | ||
770 | struct ap_message ap_msg; | ||
771 | struct response_type resp_type = { | ||
772 | .type = PCIXCC_RESPONSE_TYPE_XCRB, | ||
773 | }; | ||
774 | int rc; | ||
775 | |||
776 | ap_init_message(&ap_msg); | ||
777 | ap_msg.message = kmalloc(PCIXCC_MAX_XCRB_MESSAGE_SIZE, GFP_KERNEL); | ||
778 | if (!ap_msg.message) | ||
779 | return -ENOMEM; | ||
780 | ap_msg.receive = zcrypt_pcixcc_receive; | ||
781 | ap_msg.psmid = (((unsigned long long) current->pid) << 32) + | ||
782 | atomic_inc_return(&zcrypt_step); | ||
783 | ap_msg.private = &resp_type; | ||
784 | rc = XCRB_msg_to_type6CPRB_msgX(zdev, &ap_msg, xcRB); | ||
785 | if (rc) | ||
786 | goto out_free; | ||
787 | init_completion(&resp_type.work); | ||
788 | ap_queue_message(zdev->ap_dev, &ap_msg); | ||
789 | rc = wait_for_completion_interruptible(&resp_type.work); | ||
790 | if (rc == 0) | ||
791 | rc = convert_response_xcrb(zdev, &ap_msg, xcRB); | ||
792 | else | ||
793 | /* Signal pending. */ | ||
794 | ap_cancel_message(zdev->ap_dev, &ap_msg); | ||
795 | out_free: | ||
796 | kzfree(ap_msg.message); | ||
797 | return rc; | ||
798 | } | ||
799 | |||
800 | /** | ||
801 | * The request distributor calls this function if it picked the PCIXCC/CEX2C | ||
802 | * device to generate random data. | ||
803 | * @zdev: pointer to zcrypt_device structure that identifies the | ||
804 | * PCIXCC/CEX2C device to the request distributor | ||
805 | * @buffer: pointer to a memory page to return random data | ||
806 | */ | ||
807 | |||
808 | static long zcrypt_pcixcc_rng(struct zcrypt_device *zdev, | ||
809 | char *buffer) | ||
810 | { | ||
811 | struct ap_message ap_msg; | ||
812 | struct response_type resp_type = { | ||
813 | .type = PCIXCC_RESPONSE_TYPE_XCRB, | ||
814 | }; | ||
815 | int rc; | ||
816 | |||
817 | ap_init_message(&ap_msg); | ||
818 | ap_msg.message = kmalloc(PCIXCC_MAX_XCRB_MESSAGE_SIZE, GFP_KERNEL); | ||
819 | if (!ap_msg.message) | ||
820 | return -ENOMEM; | ||
821 | ap_msg.receive = zcrypt_pcixcc_receive; | ||
822 | ap_msg.psmid = (((unsigned long long) current->pid) << 32) + | ||
823 | atomic_inc_return(&zcrypt_step); | ||
824 | ap_msg.private = &resp_type; | ||
825 | rng_type6CPRB_msgX(zdev->ap_dev, &ap_msg, ZCRYPT_RNG_BUFFER_SIZE); | ||
826 | init_completion(&resp_type.work); | ||
827 | ap_queue_message(zdev->ap_dev, &ap_msg); | ||
828 | rc = wait_for_completion_interruptible(&resp_type.work); | ||
829 | if (rc == 0) | ||
830 | rc = convert_response_rng(zdev, &ap_msg, buffer); | ||
831 | else | ||
832 | /* Signal pending. */ | ||
833 | ap_cancel_message(zdev->ap_dev, &ap_msg); | ||
834 | kfree(ap_msg.message); | ||
835 | return rc; | ||
836 | } | ||
837 | |||
838 | /** | ||
839 | * The crypto operations for a PCIXCC/CEX2C card. | ||
840 | */ | ||
841 | static struct zcrypt_ops zcrypt_pcixcc_ops = { | ||
842 | .rsa_modexpo = zcrypt_pcixcc_modexpo, | ||
843 | .rsa_modexpo_crt = zcrypt_pcixcc_modexpo_crt, | ||
844 | .send_cprb = zcrypt_pcixcc_send_cprb, | ||
845 | }; | ||
846 | |||
847 | static struct zcrypt_ops zcrypt_pcixcc_with_rng_ops = { | ||
848 | .rsa_modexpo = zcrypt_pcixcc_modexpo, | ||
849 | .rsa_modexpo_crt = zcrypt_pcixcc_modexpo_crt, | ||
850 | .send_cprb = zcrypt_pcixcc_send_cprb, | ||
851 | .rng = zcrypt_pcixcc_rng, | ||
852 | }; | ||
853 | |||
854 | /** | ||
855 | * Micro-code detection function. Its sends a message to a pcixcc card | 95 | * Micro-code detection function. Its sends a message to a pcixcc card |
856 | * to find out the microcode level. | 96 | * to find out the microcode level. |
857 | * @ap_dev: pointer to the AP device. | 97 | * @ap_dev: pointer to the AP device. |
@@ -1083,9 +323,11 @@ static int zcrypt_pcixcc_probe(struct ap_device *ap_dev) | |||
1083 | return rc; | 323 | return rc; |
1084 | } | 324 | } |
1085 | if (rc) | 325 | if (rc) |
1086 | zdev->ops = &zcrypt_pcixcc_with_rng_ops; | 326 | zdev->ops = zcrypt_msgtype_request(MSGTYPE06_NAME, |
327 | MSGTYPE06_VARIANT_DEFAULT); | ||
1087 | else | 328 | else |
1088 | zdev->ops = &zcrypt_pcixcc_ops; | 329 | zdev->ops = zcrypt_msgtype_request(MSGTYPE06_NAME, |
330 | MSGTYPE06_VARIANT_NORNG); | ||
1089 | ap_dev->reply = &zdev->reply; | 331 | ap_dev->reply = &zdev->reply; |
1090 | ap_dev->private = zdev; | 332 | ap_dev->private = zdev; |
1091 | rc = zcrypt_device_register(zdev); | 333 | rc = zcrypt_device_register(zdev); |
@@ -1095,6 +337,7 @@ static int zcrypt_pcixcc_probe(struct ap_device *ap_dev) | |||
1095 | 337 | ||
1096 | out_free: | 338 | out_free: |
1097 | ap_dev->private = NULL; | 339 | ap_dev->private = NULL; |
340 | zcrypt_msgtype_release(zdev->ops); | ||
1098 | zcrypt_device_free(zdev); | 341 | zcrypt_device_free(zdev); |
1099 | return rc; | 342 | return rc; |
1100 | } | 343 | } |
@@ -1106,8 +349,10 @@ static int zcrypt_pcixcc_probe(struct ap_device *ap_dev) | |||
1106 | static void zcrypt_pcixcc_remove(struct ap_device *ap_dev) | 349 | static void zcrypt_pcixcc_remove(struct ap_device *ap_dev) |
1107 | { | 350 | { |
1108 | struct zcrypt_device *zdev = ap_dev->private; | 351 | struct zcrypt_device *zdev = ap_dev->private; |
352 | struct zcrypt_ops *zops = zdev->ops; | ||
1109 | 353 | ||
1110 | zcrypt_device_unregister(zdev); | 354 | zcrypt_device_unregister(zdev); |
355 | zcrypt_msgtype_release(zops); | ||
1111 | } | 356 | } |
1112 | 357 | ||
1113 | int __init zcrypt_pcixcc_init(void) | 358 | int __init zcrypt_pcixcc_init(void) |