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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) }, | |
75 | { /* end of list */ }, | |
76 | }; | |
77 | ||
78 | #ifndef CONFIG_ZCRYPT_MONOLITHIC | |
79 | MODULE_DEVICE_TABLE(ap, zcrypt_pcixcc_ids); | |
80 | MODULE_AUTHOR("IBM Corporation"); | |
81 | MODULE_DESCRIPTION("PCIXCC Cryptographic Coprocessor device driver, " | |
82 | "Copyright 2001, 2006 IBM Corporation"); | |
83 | MODULE_LICENSE("GPL"); | |
84 | #endif | |
85 | ||
86 | static int zcrypt_pcixcc_probe(struct ap_device *ap_dev); | |
87 | static void zcrypt_pcixcc_remove(struct ap_device *ap_dev); | |
88 | static void zcrypt_pcixcc_receive(struct ap_device *, struct ap_message *, | |
89 | struct ap_message *); | |
90 | ||
91 | static struct ap_driver zcrypt_pcixcc_driver = { | |
92 | .probe = zcrypt_pcixcc_probe, | |
93 | .remove = zcrypt_pcixcc_remove, | |
94 | .receive = zcrypt_pcixcc_receive, | |
95 | .ids = zcrypt_pcixcc_ids, | |
96 | }; | |
97 | ||
98 | /** | |
99 | * The following is used to initialize the CPRBX passed to the PCIXCC/CEX2C | |
100 | * card in a type6 message. The 3 fields that must be filled in at execution | |
101 | * time are req_parml, rpl_parml and usage_domain. | |
102 | * Everything about this interface is ascii/big-endian, since the | |
103 | * device does *not* have 'Intel inside'. | |
104 | * | |
105 | * The CPRBX is followed immediately by the parm block. | |
106 | * The parm block contains: | |
107 | * - function code ('PD' 0x5044 or 'PK' 0x504B) | |
108 | * - rule block (one of:) | |
109 | * + 0x000A 'PKCS-1.2' (MCL2 'PD') | |
110 | * + 0x000A 'ZERO-PAD' (MCL2 'PK') | |
111 | * + 0x000A 'ZERO-PAD' (MCL3 'PD' or CEX2C 'PD') | |
112 | * + 0x000A 'MRP ' (MCL3 'PK' or CEX2C 'PK') | |
113 | * - VUD block | |
114 | */ | |
115 | static struct CPRBX static_cprbx = { | |
116 | .cprb_len = 0x00DC, | |
117 | .cprb_ver_id = 0x02, | |
118 | .func_id = {0x54,0x32}, | |
119 | }; | |
120 | ||
121 | /** | |
122 | * Convert a ICAMEX message to a type6 MEX message. | |
123 | * | |
124 | * @zdev: crypto device pointer | |
125 | * @ap_msg: pointer to AP message | |
126 | * @mex: pointer to user input data | |
127 | * | |
128 | * Returns 0 on success or -EFAULT. | |
129 | */ | |
130 | static int ICAMEX_msg_to_type6MEX_msgX(struct zcrypt_device *zdev, | |
131 | struct ap_message *ap_msg, | |
132 | struct ica_rsa_modexpo *mex) | |
133 | { | |
134 | static struct type6_hdr static_type6_hdrX = { | |
135 | .type = 0x06, | |
136 | .offset1 = 0x00000058, | |
137 | .agent_id = {'C','A',}, | |
138 | .function_code = {'P','K'}, | |
139 | }; | |
140 | static struct function_and_rules_block static_pke_fnr = { | |
141 | .function_code = {'P','K'}, | |
142 | .ulen = 10, | |
143 | .only_rule = {'M','R','P',' ',' ',' ',' ',' '} | |
144 | }; | |
145 | static struct function_and_rules_block static_pke_fnr_MCL2 = { | |
146 | .function_code = {'P','K'}, | |
147 | .ulen = 10, | |
148 | .only_rule = {'Z','E','R','O','-','P','A','D'} | |
149 | }; | |
150 | struct { | |
151 | struct type6_hdr hdr; | |
152 | struct CPRBX cprbx; | |
153 | struct function_and_rules_block fr; | |
154 | unsigned short length; | |
155 | char text[0]; | |
156 | } __attribute__((packed)) *msg = ap_msg->message; | |
157 | int size; | |
158 | ||
159 | /* VUD.ciphertext */ | |
160 | msg->length = mex->inputdatalength + 2; | |
161 | if (copy_from_user(msg->text, mex->inputdata, mex->inputdatalength)) | |
162 | return -EFAULT; | |
163 | ||
164 | /* Set up key which is located after the variable length text. */ | |
165 | size = zcrypt_type6_mex_key_en(mex, msg->text+mex->inputdatalength, 1); | |
166 | if (size < 0) | |
167 | return size; | |
168 | size += sizeof(*msg) + mex->inputdatalength; | |
169 | ||
170 | /* message header, cprbx and f&r */ | |
171 | msg->hdr = static_type6_hdrX; | |
172 | msg->hdr.ToCardLen1 = size - sizeof(msg->hdr); | |
173 | msg->hdr.FromCardLen1 = PCIXCC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr); | |
174 | ||
175 | msg->cprbx = static_cprbx; | |
176 | msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid); | |
177 | msg->cprbx.rpl_msgbl = msg->hdr.FromCardLen1; | |
178 | ||
179 | msg->fr = (zdev->user_space_type == ZCRYPT_PCIXCC_MCL2) ? | |
180 | static_pke_fnr_MCL2 : static_pke_fnr; | |
181 | ||
182 | msg->cprbx.req_parml = size - sizeof(msg->hdr) - sizeof(msg->cprbx); | |
183 | ||
184 | ap_msg->length = size; | |
185 | return 0; | |
186 | } | |
187 | ||
188 | /** | |
189 | * Convert a ICACRT message to a type6 CRT message. | |
190 | * | |
191 | * @zdev: crypto device pointer | |
192 | * @ap_msg: pointer to AP message | |
193 | * @crt: pointer to user input data | |
194 | * | |
195 | * Returns 0 on success or -EFAULT. | |
196 | */ | |
197 | static int ICACRT_msg_to_type6CRT_msgX(struct zcrypt_device *zdev, | |
198 | struct ap_message *ap_msg, | |
199 | struct ica_rsa_modexpo_crt *crt) | |
200 | { | |
201 | static struct type6_hdr static_type6_hdrX = { | |
202 | .type = 0x06, | |
203 | .offset1 = 0x00000058, | |
204 | .agent_id = {'C','A',}, | |
205 | .function_code = {'P','D'}, | |
206 | }; | |
207 | static struct function_and_rules_block static_pkd_fnr = { | |
208 | .function_code = {'P','D'}, | |
209 | .ulen = 10, | |
210 | .only_rule = {'Z','E','R','O','-','P','A','D'} | |
211 | }; | |
212 | ||
213 | static struct function_and_rules_block static_pkd_fnr_MCL2 = { | |
214 | .function_code = {'P','D'}, | |
215 | .ulen = 10, | |
216 | .only_rule = {'P','K','C','S','-','1','.','2'} | |
217 | }; | |
218 | struct { | |
219 | struct type6_hdr hdr; | |
220 | struct CPRBX cprbx; | |
221 | struct function_and_rules_block fr; | |
222 | unsigned short length; | |
223 | char text[0]; | |
224 | } __attribute__((packed)) *msg = ap_msg->message; | |
225 | int size; | |
226 | ||
227 | /* VUD.ciphertext */ | |
228 | msg->length = crt->inputdatalength + 2; | |
229 | if (copy_from_user(msg->text, crt->inputdata, crt->inputdatalength)) | |
230 | return -EFAULT; | |
231 | ||
232 | /* Set up key which is located after the variable length text. */ | |
233 | size = zcrypt_type6_crt_key(crt, msg->text + crt->inputdatalength, 1); | |
234 | if (size < 0) | |
235 | return size; | |
236 | size += sizeof(*msg) + crt->inputdatalength; /* total size of msg */ | |
237 | ||
238 | /* message header, cprbx and f&r */ | |
239 | msg->hdr = static_type6_hdrX; | |
240 | msg->hdr.ToCardLen1 = size - sizeof(msg->hdr); | |
241 | msg->hdr.FromCardLen1 = PCIXCC_MAX_ICA_RESPONSE_SIZE - sizeof(msg->hdr); | |
242 | ||
243 | msg->cprbx = static_cprbx; | |
244 | msg->cprbx.domain = AP_QID_QUEUE(zdev->ap_dev->qid); | |
245 | msg->cprbx.req_parml = msg->cprbx.rpl_msgbl = | |
246 | size - sizeof(msg->hdr) - sizeof(msg->cprbx); | |
247 | ||
248 | msg->fr = (zdev->user_space_type == ZCRYPT_PCIXCC_MCL2) ? | |
249 | static_pkd_fnr_MCL2 : static_pkd_fnr; | |
250 | ||
251 | ap_msg->length = size; | |
252 | return 0; | |
253 | } | |
254 | ||
5432114b RW |
255 | /** |
256 | * Convert a XCRB message to a type6 CPRB message. | |
257 | * | |
258 | * @zdev: crypto device pointer | |
259 | * @ap_msg: pointer to AP message | |
260 | * @xcRB: pointer to user input data | |
261 | * | |
262 | * Returns 0 on success or -EFAULT. | |
263 | */ | |
264 | struct type86_fmt2_msg { | |
265 | struct type86_hdr hdr; | |
266 | struct type86_fmt2_ext fmt2; | |
267 | } __attribute__((packed)); | |
268 | ||
269 | static int XCRB_msg_to_type6CPRB_msgX(struct zcrypt_device *zdev, | |
270 | struct ap_message *ap_msg, | |
271 | struct ica_xcRB *xcRB) | |
272 | { | |
273 | static struct type6_hdr static_type6_hdrX = { | |
274 | .type = 0x06, | |
275 | .offset1 = 0x00000058, | |
276 | }; | |
277 | struct { | |
278 | struct type6_hdr hdr; | |
279 | struct ica_CPRBX cprbx; | |
280 | } __attribute__((packed)) *msg = ap_msg->message; | |
281 | ||
282 | int rcblen = CEIL4(xcRB->request_control_blk_length); | |
283 | int replylen; | |
284 | char *req_data = ap_msg->message + sizeof(struct type6_hdr) + rcblen; | |
285 | char *function_code; | |
286 | ||
287 | /* length checks */ | |
288 | ap_msg->length = sizeof(struct type6_hdr) + | |
289 | CEIL4(xcRB->request_control_blk_length) + | |
290 | xcRB->request_data_length; | |
291 | if (ap_msg->length > PCIXCC_MAX_XCRB_MESSAGE_SIZE) { | |
292 | PRINTK("Combined message is too large (%ld/%d/%d).\n", | |
293 | sizeof(struct type6_hdr), | |
294 | xcRB->request_control_blk_length, | |
295 | xcRB->request_data_length); | |
296 | return -EFAULT; | |
297 | } | |
298 | if (CEIL4(xcRB->reply_control_blk_length) > | |
299 | PCIXCC_MAX_XCRB_REPLY_SIZE) { | |
300 | PDEBUG("Reply CPRB length is too large (%d).\n", | |
301 | xcRB->request_control_blk_length); | |
302 | return -EFAULT; | |
303 | } | |
304 | if (CEIL4(xcRB->reply_data_length) > PCIXCC_MAX_XCRB_DATA_SIZE) { | |
305 | PDEBUG("Reply data block length is too large (%d).\n", | |
306 | xcRB->reply_data_length); | |
307 | return -EFAULT; | |
308 | } | |
309 | replylen = CEIL4(xcRB->reply_control_blk_length) + | |
310 | CEIL4(xcRB->reply_data_length) + | |
311 | sizeof(struct type86_fmt2_msg); | |
312 | if (replylen > PCIXCC_MAX_XCRB_RESPONSE_SIZE) { | |
313 | PDEBUG("Reply CPRB + data block > PCIXCC_MAX_XCRB_RESPONSE_SIZE" | |
314 | " (%d/%d/%d).\n", | |
315 | sizeof(struct type86_fmt2_msg), | |
316 | xcRB->reply_control_blk_length, | |
317 | xcRB->reply_data_length); | |
318 | xcRB->reply_control_blk_length = PCIXCC_MAX_XCRB_RESPONSE_SIZE - | |
319 | (sizeof(struct type86_fmt2_msg) + | |
320 | CEIL4(xcRB->reply_data_length)); | |
321 | PDEBUG("Capping Reply CPRB length at %d\n", | |
322 | xcRB->reply_control_blk_length); | |
323 | } | |
324 | ||
325 | /* prepare type6 header */ | |
326 | msg->hdr = static_type6_hdrX; | |
327 | memcpy(msg->hdr.agent_id , &(xcRB->agent_ID), sizeof(xcRB->agent_ID)); | |
328 | msg->hdr.ToCardLen1 = xcRB->request_control_blk_length; | |
329 | if (xcRB->request_data_length) { | |
330 | msg->hdr.offset2 = msg->hdr.offset1 + rcblen; | |
331 | msg->hdr.ToCardLen2 = xcRB->request_data_length; | |
332 | } | |
333 | msg->hdr.FromCardLen1 = xcRB->reply_control_blk_length; | |
334 | msg->hdr.FromCardLen2 = xcRB->reply_data_length; | |
335 | ||
336 | /* prepare CPRB */ | |
337 | if (copy_from_user(&(msg->cprbx), xcRB->request_control_blk_addr, | |
338 | xcRB->request_control_blk_length)) | |
339 | return -EFAULT; | |
340 | if (msg->cprbx.cprb_len + sizeof(msg->hdr.function_code) > | |
341 | xcRB->request_control_blk_length) { | |
342 | PDEBUG("cprb_len too large (%d/%d)\n", msg->cprbx.cprb_len, | |
343 | xcRB->request_control_blk_length); | |
344 | return -EFAULT; | |
345 | } | |
346 | function_code = ((unsigned char *)&msg->cprbx) + msg->cprbx.cprb_len; | |
347 | memcpy(msg->hdr.function_code, function_code, sizeof(msg->hdr.function_code)); | |
348 | ||
349 | /* copy data block */ | |
350 | if (xcRB->request_data_length && | |
351 | copy_from_user(req_data, xcRB->request_data_address, | |
352 | xcRB->request_data_length)) | |
353 | return -EFAULT; | |
354 | return 0; | |
355 | } | |
356 | ||
6684af1a MS |
357 | /** |
358 | * Copy results from a type 86 ICA reply message back to user space. | |
359 | * | |
360 | * @zdev: crypto device pointer | |
361 | * @reply: reply AP message. | |
362 | * @data: pointer to user output data | |
363 | * @length: size of user output data | |
364 | * | |
365 | * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error. | |
366 | */ | |
367 | struct type86x_reply { | |
368 | struct type86_hdr hdr; | |
369 | struct type86_fmt2_ext fmt2; | |
370 | struct CPRBX cprbx; | |
371 | unsigned char pad[4]; /* 4 byte function code/rules block ? */ | |
372 | unsigned short length; | |
373 | char text[0]; | |
374 | } __attribute__((packed)); | |
375 | ||
376 | static int convert_type86_ica(struct zcrypt_device *zdev, | |
377 | struct ap_message *reply, | |
378 | char __user *outputdata, | |
379 | unsigned int outputdatalength) | |
380 | { | |
381 | static unsigned char static_pad[] = { | |
382 | 0x00,0x02, | |
383 | 0x1B,0x7B,0x5D,0xB5,0x75,0x01,0x3D,0xFD, | |
384 | 0x8D,0xD1,0xC7,0x03,0x2D,0x09,0x23,0x57, | |
385 | 0x89,0x49,0xB9,0x3F,0xBB,0x99,0x41,0x5B, | |
386 | 0x75,0x21,0x7B,0x9D,0x3B,0x6B,0x51,0x39, | |
387 | 0xBB,0x0D,0x35,0xB9,0x89,0x0F,0x93,0xA5, | |
388 | 0x0B,0x47,0xF1,0xD3,0xBB,0xCB,0xF1,0x9D, | |
389 | 0x23,0x73,0x71,0xFF,0xF3,0xF5,0x45,0xFB, | |
390 | 0x61,0x29,0x23,0xFD,0xF1,0x29,0x3F,0x7F, | |
391 | 0x17,0xB7,0x1B,0xA9,0x19,0xBD,0x57,0xA9, | |
392 | 0xD7,0x95,0xA3,0xCB,0xED,0x1D,0xDB,0x45, | |
393 | 0x7D,0x11,0xD1,0x51,0x1B,0xED,0x71,0xE9, | |
394 | 0xB1,0xD1,0xAB,0xAB,0x21,0x2B,0x1B,0x9F, | |
395 | 0x3B,0x9F,0xF7,0xF7,0xBD,0x63,0xEB,0xAD, | |
396 | 0xDF,0xB3,0x6F,0x5B,0xDB,0x8D,0xA9,0x5D, | |
397 | 0xE3,0x7D,0x77,0x49,0x47,0xF5,0xA7,0xFD, | |
398 | 0xAB,0x2F,0x27,0x35,0x77,0xD3,0x49,0xC9, | |
399 | 0x09,0xEB,0xB1,0xF9,0xBF,0x4B,0xCB,0x2B, | |
400 | 0xEB,0xEB,0x05,0xFF,0x7D,0xC7,0x91,0x8B, | |
401 | 0x09,0x83,0xB9,0xB9,0x69,0x33,0x39,0x6B, | |
402 | 0x79,0x75,0x19,0xBF,0xBB,0x07,0x1D,0xBD, | |
403 | 0x29,0xBF,0x39,0x95,0x93,0x1D,0x35,0xC7, | |
404 | 0xC9,0x4D,0xE5,0x97,0x0B,0x43,0x9B,0xF1, | |
405 | 0x16,0x93,0x03,0x1F,0xA5,0xFB,0xDB,0xF3, | |
406 | 0x27,0x4F,0x27,0x61,0x05,0x1F,0xB9,0x23, | |
407 | 0x2F,0xC3,0x81,0xA9,0x23,0x71,0x55,0x55, | |
408 | 0xEB,0xED,0x41,0xE5,0xF3,0x11,0xF1,0x43, | |
409 | 0x69,0x03,0xBD,0x0B,0x37,0x0F,0x51,0x8F, | |
410 | 0x0B,0xB5,0x89,0x5B,0x67,0xA9,0xD9,0x4F, | |
411 | 0x01,0xF9,0x21,0x77,0x37,0x73,0x79,0xC5, | |
412 | 0x7F,0x51,0xC1,0xCF,0x97,0xA1,0x75,0xAD, | |
413 | 0x35,0x9D,0xD3,0xD3,0xA7,0x9D,0x5D,0x41, | |
414 | 0x6F,0x65,0x1B,0xCF,0xA9,0x87,0x91,0x09 | |
415 | }; | |
416 | struct type86x_reply *msg = reply->message; | |
417 | unsigned short service_rc, service_rs; | |
418 | unsigned int reply_len, pad_len; | |
419 | char *data; | |
420 | ||
421 | service_rc = msg->cprbx.ccp_rtcode; | |
422 | if (unlikely(service_rc != 0)) { | |
423 | service_rs = msg->cprbx.ccp_rscode; | |
424 | if (service_rc == 8 && service_rs == 66) { | |
425 | PDEBUG("Bad block format on PCIXCC/CEX2C\n"); | |
426 | return -EINVAL; | |
427 | } | |
428 | if (service_rc == 8 && service_rs == 65) { | |
429 | PDEBUG("Probably an even modulus on PCIXCC/CEX2C\n"); | |
430 | return -EINVAL; | |
431 | } | |
432 | if (service_rc == 8 && service_rs == 770) { | |
433 | PDEBUG("Invalid key length on PCIXCC/CEX2C\n"); | |
434 | zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD; | |
435 | return -EAGAIN; | |
436 | } | |
437 | if (service_rc == 8 && service_rs == 783) { | |
438 | PDEBUG("Extended bitlengths not enabled on PCIXCC/CEX2C\n"); | |
439 | zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD; | |
440 | return -EAGAIN; | |
441 | } | |
442 | PRINTK("Unknown service rc/rs (PCIXCC/CEX2C): %d/%d\n", | |
443 | service_rc, service_rs); | |
444 | zdev->online = 0; | |
445 | return -EAGAIN; /* repeat the request on a different device. */ | |
446 | } | |
447 | data = msg->text; | |
448 | reply_len = msg->length - 2; | |
449 | if (reply_len > outputdatalength) | |
450 | return -EINVAL; | |
451 | /** | |
452 | * For all encipher requests, the length of the ciphertext (reply_len) | |
453 | * will always equal the modulus length. For MEX decipher requests | |
454 | * the output needs to get padded. Minimum pad size is 10. | |
455 | * | |
456 | * Currently, the cases where padding will be added is for: | |
457 | * - PCIXCC_MCL2 using a CRT form token (since PKD didn't support | |
458 | * ZERO-PAD and CRT is only supported for PKD requests) | |
459 | * - PCICC, always | |
460 | */ | |
461 | pad_len = outputdatalength - reply_len; | |
462 | if (pad_len > 0) { | |
463 | if (pad_len < 10) | |
464 | return -EINVAL; | |
465 | /* 'restore' padding left in the PCICC/PCIXCC card. */ | |
466 | if (copy_to_user(outputdata, static_pad, pad_len - 1)) | |
467 | return -EFAULT; | |
468 | if (put_user(0, outputdata + pad_len - 1)) | |
469 | return -EFAULT; | |
470 | } | |
471 | /* Copy the crypto response to user space. */ | |
472 | if (copy_to_user(outputdata + pad_len, data, reply_len)) | |
473 | return -EFAULT; | |
474 | return 0; | |
475 | } | |
476 | ||
5432114b RW |
477 | /** |
478 | * Copy results from a type 86 XCRB reply message back to user space. | |
479 | * | |
480 | * @zdev: crypto device pointer | |
481 | * @reply: reply AP message. | |
482 | * @xcRB: pointer to XCRB | |
483 | * | |
484 | * Returns 0 on success or -EINVAL, -EFAULT, -EAGAIN in case of an error. | |
485 | */ | |
486 | static int convert_type86_xcrb(struct zcrypt_device *zdev, | |
487 | struct ap_message *reply, | |
488 | struct ica_xcRB *xcRB) | |
489 | { | |
490 | struct type86_fmt2_msg *msg = reply->message; | |
491 | char *data = reply->message; | |
492 | ||
493 | /* Copy CPRB to user */ | |
494 | if (copy_to_user(xcRB->reply_control_blk_addr, | |
495 | data + msg->fmt2.offset1, msg->fmt2.count1)) | |
496 | return -EFAULT; | |
497 | xcRB->reply_control_blk_length = msg->fmt2.count1; | |
498 | ||
499 | /* Copy data buffer to user */ | |
500 | if (msg->fmt2.count2) | |
501 | if (copy_to_user(xcRB->reply_data_addr, | |
502 | data + msg->fmt2.offset2, msg->fmt2.count2)) | |
503 | return -EFAULT; | |
504 | xcRB->reply_data_length = msg->fmt2.count2; | |
505 | return 0; | |
506 | } | |
507 | ||
6684af1a MS |
508 | static int convert_response_ica(struct zcrypt_device *zdev, |
509 | struct ap_message *reply, | |
510 | char __user *outputdata, | |
511 | unsigned int outputdatalength) | |
512 | { | |
513 | struct type86x_reply *msg = reply->message; | |
514 | ||
515 | /* Response type byte is the second byte in the response. */ | |
516 | switch (((unsigned char *) reply->message)[1]) { | |
517 | case TYPE82_RSP_CODE: | |
518 | case TYPE88_RSP_CODE: | |
519 | return convert_error(zdev, reply); | |
520 | case TYPE86_RSP_CODE: | |
521 | if (msg->hdr.reply_code) | |
522 | return convert_error(zdev, reply); | |
523 | if (msg->cprbx.cprb_ver_id == 0x02) | |
524 | return convert_type86_ica(zdev, reply, | |
525 | outputdata, outputdatalength); | |
526 | /* no break, incorrect cprb version is an unknown response */ | |
527 | default: /* Unknown response type, this should NEVER EVER happen */ | |
528 | PRINTK("Unrecognized Message Header: %08x%08x\n", | |
529 | *(unsigned int *) reply->message, | |
530 | *(unsigned int *) (reply->message+4)); | |
531 | zdev->online = 0; | |
532 | return -EAGAIN; /* repeat the request on a different device. */ | |
533 | } | |
534 | } | |
535 | ||
5432114b RW |
536 | static int convert_response_xcrb(struct zcrypt_device *zdev, |
537 | struct ap_message *reply, | |
538 | struct ica_xcRB *xcRB) | |
539 | { | |
540 | struct type86x_reply *msg = reply->message; | |
541 | ||
542 | /* Response type byte is the second byte in the response. */ | |
543 | switch (((unsigned char *) reply->message)[1]) { | |
544 | case TYPE82_RSP_CODE: | |
545 | case TYPE88_RSP_CODE: | |
546 | xcRB->status = 0x0008044DL; /* HDD_InvalidParm */ | |
547 | return convert_error(zdev, reply); | |
548 | case TYPE86_RSP_CODE: | |
549 | if (msg->hdr.reply_code) { | |
550 | memcpy(&(xcRB->status), msg->fmt2.apfs, sizeof(u32)); | |
551 | return convert_error(zdev, reply); | |
552 | } | |
553 | if (msg->cprbx.cprb_ver_id == 0x02) | |
554 | return convert_type86_xcrb(zdev, reply, xcRB); | |
555 | /* no break, incorrect cprb version is an unknown response */ | |
556 | default: /* Unknown response type, this should NEVER EVER happen */ | |
557 | PRINTK("Unrecognized Message Header: %08x%08x\n", | |
558 | *(unsigned int *) reply->message, | |
559 | *(unsigned int *) (reply->message+4)); | |
560 | xcRB->status = 0x0008044DL; /* HDD_InvalidParm */ | |
561 | zdev->online = 0; | |
562 | return -EAGAIN; /* repeat the request on a different device. */ | |
563 | } | |
564 | } | |
565 | ||
6684af1a MS |
566 | /** |
567 | * This function is called from the AP bus code after a crypto request | |
568 | * "msg" has finished with the reply message "reply". | |
569 | * It is called from tasklet context. | |
570 | * @ap_dev: pointer to the AP device | |
571 | * @msg: pointer to the AP message | |
572 | * @reply: pointer to the AP reply message | |
573 | */ | |
574 | static void zcrypt_pcixcc_receive(struct ap_device *ap_dev, | |
575 | struct ap_message *msg, | |
576 | struct ap_message *reply) | |
577 | { | |
578 | static struct error_hdr error_reply = { | |
579 | .type = TYPE82_RSP_CODE, | |
580 | .reply_code = REP82_ERROR_MACHINE_FAILURE, | |
581 | }; | |
5432114b RW |
582 | struct response_type *resp_type = |
583 | (struct response_type *) msg->private; | |
6684af1a MS |
584 | struct type86x_reply *t86r = reply->message; |
585 | int length; | |
586 | ||
587 | /* Copy the reply message to the request message buffer. */ | |
588 | if (IS_ERR(reply)) | |
589 | memcpy(msg->message, &error_reply, sizeof(error_reply)); | |
590 | else if (t86r->hdr.type == TYPE86_RSP_CODE && | |
591 | t86r->cprbx.cprb_ver_id == 0x02) { | |
5432114b RW |
592 | switch (resp_type->type) { |
593 | case PCIXCC_RESPONSE_TYPE_ICA: | |
594 | length = sizeof(struct type86x_reply) | |
595 | + t86r->length - 2; | |
596 | length = min(PCIXCC_MAX_ICA_RESPONSE_SIZE, length); | |
597 | memcpy(msg->message, reply->message, length); | |
598 | break; | |
599 | case PCIXCC_RESPONSE_TYPE_XCRB: | |
600 | length = t86r->fmt2.offset2 + t86r->fmt2.count2; | |
601 | length = min(PCIXCC_MAX_XCRB_RESPONSE_SIZE, length); | |
602 | memcpy(msg->message, reply->message, length); | |
603 | break; | |
604 | default: | |
605 | PRINTK("Invalid internal response type: %i\n", | |
606 | resp_type->type); | |
607 | memcpy(msg->message, &error_reply, | |
608 | sizeof error_reply); | |
609 | } | |
6684af1a MS |
610 | } else |
611 | memcpy(msg->message, reply->message, sizeof error_reply); | |
5432114b | 612 | complete(&(resp_type->work)); |
6684af1a MS |
613 | } |
614 | ||
615 | static atomic_t zcrypt_step = ATOMIC_INIT(0); | |
616 | ||
617 | /** | |
618 | * The request distributor calls this function if it picked the PCIXCC/CEX2C | |
619 | * device to handle a modexpo request. | |
620 | * @zdev: pointer to zcrypt_device structure that identifies the | |
621 | * PCIXCC/CEX2C device to the request distributor | |
622 | * @mex: pointer to the modexpo request buffer | |
623 | */ | |
624 | static long zcrypt_pcixcc_modexpo(struct zcrypt_device *zdev, | |
625 | struct ica_rsa_modexpo *mex) | |
626 | { | |
627 | struct ap_message ap_msg; | |
5432114b RW |
628 | struct response_type resp_type = { |
629 | .type = PCIXCC_RESPONSE_TYPE_ICA, | |
630 | }; | |
6684af1a MS |
631 | int rc; |
632 | ||
633 | ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL); | |
634 | if (!ap_msg.message) | |
635 | return -ENOMEM; | |
636 | ap_msg.psmid = (((unsigned long long) current->pid) << 32) + | |
637 | atomic_inc_return(&zcrypt_step); | |
5432114b | 638 | ap_msg.private = &resp_type; |
6684af1a MS |
639 | rc = ICAMEX_msg_to_type6MEX_msgX(zdev, &ap_msg, mex); |
640 | if (rc) | |
641 | goto out_free; | |
5432114b | 642 | init_completion(&resp_type.work); |
6684af1a MS |
643 | ap_queue_message(zdev->ap_dev, &ap_msg); |
644 | rc = wait_for_completion_interruptible_timeout( | |
5432114b | 645 | &resp_type.work, PCIXCC_CLEANUP_TIME); |
6684af1a MS |
646 | if (rc > 0) |
647 | rc = convert_response_ica(zdev, &ap_msg, mex->outputdata, | |
648 | mex->outputdatalength); | |
649 | else { | |
650 | /* Signal pending or message timed out. */ | |
651 | ap_cancel_message(zdev->ap_dev, &ap_msg); | |
652 | if (rc == 0) | |
653 | /* Message timed out. */ | |
654 | rc = -ETIME; | |
655 | } | |
656 | out_free: | |
657 | free_page((unsigned long) ap_msg.message); | |
658 | return rc; | |
659 | } | |
660 | ||
661 | /** | |
662 | * The request distributor calls this function if it picked the PCIXCC/CEX2C | |
663 | * device to handle a modexpo_crt request. | |
664 | * @zdev: pointer to zcrypt_device structure that identifies the | |
665 | * PCIXCC/CEX2C device to the request distributor | |
666 | * @crt: pointer to the modexpoc_crt request buffer | |
667 | */ | |
668 | static long zcrypt_pcixcc_modexpo_crt(struct zcrypt_device *zdev, | |
669 | struct ica_rsa_modexpo_crt *crt) | |
670 | { | |
671 | struct ap_message ap_msg; | |
5432114b RW |
672 | struct response_type resp_type = { |
673 | .type = PCIXCC_RESPONSE_TYPE_ICA, | |
674 | }; | |
6684af1a MS |
675 | int rc; |
676 | ||
677 | ap_msg.message = (void *) get_zeroed_page(GFP_KERNEL); | |
678 | if (!ap_msg.message) | |
679 | return -ENOMEM; | |
680 | ap_msg.psmid = (((unsigned long long) current->pid) << 32) + | |
681 | atomic_inc_return(&zcrypt_step); | |
5432114b | 682 | ap_msg.private = &resp_type; |
6684af1a MS |
683 | rc = ICACRT_msg_to_type6CRT_msgX(zdev, &ap_msg, crt); |
684 | if (rc) | |
685 | goto out_free; | |
5432114b | 686 | init_completion(&resp_type.work); |
6684af1a MS |
687 | ap_queue_message(zdev->ap_dev, &ap_msg); |
688 | rc = wait_for_completion_interruptible_timeout( | |
5432114b | 689 | &resp_type.work, PCIXCC_CLEANUP_TIME); |
6684af1a MS |
690 | if (rc > 0) |
691 | rc = convert_response_ica(zdev, &ap_msg, crt->outputdata, | |
692 | crt->outputdatalength); | |
693 | else { | |
694 | /* Signal pending or message timed out. */ | |
695 | ap_cancel_message(zdev->ap_dev, &ap_msg); | |
696 | if (rc == 0) | |
697 | /* Message timed out. */ | |
698 | rc = -ETIME; | |
699 | } | |
700 | out_free: | |
701 | free_page((unsigned long) ap_msg.message); | |
702 | return rc; | |
703 | } | |
704 | ||
5432114b RW |
705 | /** |
706 | * The request distributor calls this function if it picked the PCIXCC/CEX2C | |
707 | * device to handle a send_cprb request. | |
708 | * @zdev: pointer to zcrypt_device structure that identifies the | |
709 | * PCIXCC/CEX2C device to the request distributor | |
710 | * @xcRB: pointer to the send_cprb request buffer | |
711 | */ | |
2b67fc46 HC |
712 | static long zcrypt_pcixcc_send_cprb(struct zcrypt_device *zdev, |
713 | struct ica_xcRB *xcRB) | |
5432114b RW |
714 | { |
715 | struct ap_message ap_msg; | |
716 | struct response_type resp_type = { | |
717 | .type = PCIXCC_RESPONSE_TYPE_XCRB, | |
718 | }; | |
719 | int rc; | |
720 | ||
5cbded58 | 721 | ap_msg.message = kmalloc(PCIXCC_MAX_XCRB_MESSAGE_SIZE, GFP_KERNEL); |
5432114b RW |
722 | if (!ap_msg.message) |
723 | return -ENOMEM; | |
724 | ap_msg.psmid = (((unsigned long long) current->pid) << 32) + | |
725 | atomic_inc_return(&zcrypt_step); | |
726 | ap_msg.private = &resp_type; | |
727 | rc = XCRB_msg_to_type6CPRB_msgX(zdev, &ap_msg, xcRB); | |
728 | if (rc) | |
729 | goto out_free; | |
730 | init_completion(&resp_type.work); | |
731 | ap_queue_message(zdev->ap_dev, &ap_msg); | |
732 | rc = wait_for_completion_interruptible_timeout( | |
733 | &resp_type.work, PCIXCC_CLEANUP_TIME); | |
734 | if (rc > 0) | |
735 | rc = convert_response_xcrb(zdev, &ap_msg, xcRB); | |
736 | else { | |
737 | /* Signal pending or message timed out. */ | |
738 | ap_cancel_message(zdev->ap_dev, &ap_msg); | |
739 | if (rc == 0) | |
740 | /* Message timed out. */ | |
741 | rc = -ETIME; | |
742 | } | |
743 | out_free: | |
744 | memset(ap_msg.message, 0x0, ap_msg.length); | |
745 | kfree(ap_msg.message); | |
746 | return rc; | |
747 | } | |
748 | ||
6684af1a MS |
749 | /** |
750 | * The crypto operations for a PCIXCC/CEX2C card. | |
751 | */ | |
752 | static struct zcrypt_ops zcrypt_pcixcc_ops = { | |
753 | .rsa_modexpo = zcrypt_pcixcc_modexpo, | |
754 | .rsa_modexpo_crt = zcrypt_pcixcc_modexpo_crt, | |
5432114b | 755 | .send_cprb = zcrypt_pcixcc_send_cprb, |
6684af1a MS |
756 | }; |
757 | ||
758 | /** | |
759 | * Micro-code detection function. Its sends a message to a pcixcc card | |
760 | * to find out the microcode level. | |
761 | * @ap_dev: pointer to the AP device. | |
762 | */ | |
763 | static int zcrypt_pcixcc_mcl(struct ap_device *ap_dev) | |
764 | { | |
765 | static unsigned char msg[] = { | |
766 | 0x00,0x06,0x00,0x00,0x00,0x00,0x00,0x00, | |
767 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
768 | 0x00,0x00,0x00,0x58,0x00,0x00,0x00,0x00, | |
769 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
770 | 0x43,0x41,0x00,0x00,0x00,0x00,0x00,0x00, | |
771 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
772 | 0x00,0x00,0x00,0x00,0x50,0x4B,0x00,0x00, | |
773 | 0x00,0x00,0x01,0xC4,0x00,0x00,0x00,0x00, | |
774 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
775 | 0x00,0x00,0x07,0x24,0x00,0x00,0x00,0x00, | |
776 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
777 | 0x00,0xDC,0x02,0x00,0x00,0x00,0x54,0x32, | |
778 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE8, | |
779 | 0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x24, | |
780 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
781 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
782 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
783 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
784 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
785 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
786 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
787 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
788 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
789 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
790 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
791 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
792 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
793 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
794 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
795 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
796 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
797 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
798 | 0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x00, | |
799 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
800 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
801 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
802 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
803 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
804 | 0x00,0x00,0x00,0x00,0x50,0x4B,0x00,0x0A, | |
805 | 0x4D,0x52,0x50,0x20,0x20,0x20,0x20,0x20, | |
806 | 0x00,0x42,0x00,0x01,0x02,0x03,0x04,0x05, | |
807 | 0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D, | |
808 | 0x0E,0x0F,0x00,0x11,0x22,0x33,0x44,0x55, | |
809 | 0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD, | |
810 | 0xEE,0xFF,0xFF,0xEE,0xDD,0xCC,0xBB,0xAA, | |
811 | 0x99,0x88,0x77,0x66,0x55,0x44,0x33,0x22, | |
812 | 0x11,0x00,0x01,0x23,0x45,0x67,0x89,0xAB, | |
813 | 0xCD,0xEF,0xFE,0xDC,0xBA,0x98,0x76,0x54, | |
814 | 0x32,0x10,0x00,0x9A,0x00,0x98,0x00,0x00, | |
815 | 0x1E,0x00,0x00,0x94,0x00,0x00,0x00,0x00, | |
816 | 0x04,0x00,0x00,0x8C,0x00,0x00,0x00,0x40, | |
817 | 0x02,0x00,0x00,0x40,0xBA,0xE8,0x23,0x3C, | |
818 | 0x75,0xF3,0x91,0x61,0xD6,0x73,0x39,0xCF, | |
819 | 0x7B,0x6D,0x8E,0x61,0x97,0x63,0x9E,0xD9, | |
820 | 0x60,0x55,0xD6,0xC7,0xEF,0xF8,0x1E,0x63, | |
821 | 0x95,0x17,0xCC,0x28,0x45,0x60,0x11,0xC5, | |
822 | 0xC4,0x4E,0x66,0xC6,0xE6,0xC3,0xDE,0x8A, | |
823 | 0x19,0x30,0xCF,0x0E,0xD7,0xAA,0xDB,0x01, | |
824 | 0xD8,0x00,0xBB,0x8F,0x39,0x9F,0x64,0x28, | |
825 | 0xF5,0x7A,0x77,0x49,0xCC,0x6B,0xA3,0x91, | |
826 | 0x97,0x70,0xE7,0x60,0x1E,0x39,0xE1,0xE5, | |
827 | 0x33,0xE1,0x15,0x63,0x69,0x08,0x80,0x4C, | |
828 | 0x67,0xC4,0x41,0x8F,0x48,0xDF,0x26,0x98, | |
829 | 0xF1,0xD5,0x8D,0x88,0xD9,0x6A,0xA4,0x96, | |
830 | 0xC5,0x84,0xD9,0x30,0x49,0x67,0x7D,0x19, | |
831 | 0xB1,0xB3,0x45,0x4D,0xB2,0x53,0x9A,0x47, | |
832 | 0x3C,0x7C,0x55,0xBF,0xCC,0x85,0x00,0x36, | |
833 | 0xF1,0x3D,0x93,0x53 | |
834 | }; | |
835 | unsigned long long psmid; | |
836 | struct CPRBX *cprbx; | |
837 | char *reply; | |
838 | int rc, i; | |
839 | ||
840 | reply = (void *) get_zeroed_page(GFP_KERNEL); | |
841 | if (!reply) | |
842 | return -ENOMEM; | |
843 | ||
844 | rc = ap_send(ap_dev->qid, 0x0102030405060708ULL, msg, sizeof(msg)); | |
845 | if (rc) | |
846 | goto out_free; | |
847 | ||
848 | /* Wait for the test message to complete. */ | |
849 | for (i = 0; i < 6; i++) { | |
850 | mdelay(300); | |
851 | rc = ap_recv(ap_dev->qid, &psmid, reply, 4096); | |
852 | if (rc == 0 && psmid == 0x0102030405060708ULL) | |
853 | break; | |
854 | } | |
855 | ||
856 | if (i >= 6) { | |
857 | /* Got no answer. */ | |
858 | rc = -ENODEV; | |
859 | goto out_free; | |
860 | } | |
861 | ||
862 | cprbx = (struct CPRBX *) (reply + 48); | |
863 | if (cprbx->ccp_rtcode == 8 && cprbx->ccp_rscode == 33) | |
864 | rc = ZCRYPT_PCIXCC_MCL2; | |
865 | else | |
866 | rc = ZCRYPT_PCIXCC_MCL3; | |
867 | out_free: | |
868 | free_page((unsigned long) reply); | |
869 | return rc; | |
870 | } | |
871 | ||
872 | /** | |
873 | * Probe function for PCIXCC/CEX2C cards. It always accepts the AP device | |
874 | * since the bus_match already checked the hardware type. The PCIXCC | |
875 | * cards come in two flavours: micro code level 2 and micro code level 3. | |
876 | * This is checked by sending a test message to the device. | |
877 | * @ap_dev: pointer to the AP device. | |
878 | */ | |
879 | static int zcrypt_pcixcc_probe(struct ap_device *ap_dev) | |
880 | { | |
881 | struct zcrypt_device *zdev; | |
882 | int rc; | |
883 | ||
884 | zdev = zcrypt_device_alloc(PCIXCC_MAX_RESPONSE_SIZE); | |
885 | if (!zdev) | |
886 | return -ENOMEM; | |
887 | zdev->ap_dev = ap_dev; | |
888 | zdev->ops = &zcrypt_pcixcc_ops; | |
889 | zdev->online = 1; | |
890 | if (ap_dev->device_type == AP_DEVICE_TYPE_PCIXCC) { | |
891 | rc = zcrypt_pcixcc_mcl(ap_dev); | |
892 | if (rc < 0) { | |
893 | zcrypt_device_free(zdev); | |
894 | return rc; | |
895 | } | |
896 | zdev->user_space_type = rc; | |
897 | if (rc == ZCRYPT_PCIXCC_MCL2) { | |
898 | zdev->type_string = "PCIXCC_MCL2"; | |
899 | zdev->speed_rating = PCIXCC_MCL2_SPEED_RATING; | |
900 | zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE_OLD; | |
901 | zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE; | |
902 | } else { | |
903 | zdev->type_string = "PCIXCC_MCL3"; | |
904 | zdev->speed_rating = PCIXCC_MCL3_SPEED_RATING; | |
905 | zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE; | |
906 | zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE; | |
907 | } | |
908 | } else { | |
909 | zdev->user_space_type = ZCRYPT_CEX2C; | |
910 | zdev->type_string = "CEX2C"; | |
911 | zdev->speed_rating = CEX2C_SPEED_RATING; | |
912 | zdev->min_mod_size = PCIXCC_MIN_MOD_SIZE; | |
913 | zdev->max_mod_size = PCIXCC_MAX_MOD_SIZE; | |
914 | } | |
915 | ap_dev->reply = &zdev->reply; | |
916 | ap_dev->private = zdev; | |
917 | rc = zcrypt_device_register(zdev); | |
918 | if (rc) | |
919 | goto out_free; | |
920 | return 0; | |
921 | ||
922 | out_free: | |
923 | ap_dev->private = NULL; | |
924 | zcrypt_device_free(zdev); | |
925 | return rc; | |
926 | } | |
927 | ||
928 | /** | |
929 | * This is called to remove the extended PCIXCC/CEX2C driver information | |
930 | * if an AP device is removed. | |
931 | */ | |
932 | static void zcrypt_pcixcc_remove(struct ap_device *ap_dev) | |
933 | { | |
934 | struct zcrypt_device *zdev = ap_dev->private; | |
935 | ||
936 | zcrypt_device_unregister(zdev); | |
937 | } | |
938 | ||
939 | int __init zcrypt_pcixcc_init(void) | |
940 | { | |
941 | return ap_driver_register(&zcrypt_pcixcc_driver, THIS_MODULE, "pcixcc"); | |
942 | } | |
943 | ||
944 | void zcrypt_pcixcc_exit(void) | |
945 | { | |
946 | ap_driver_unregister(&zcrypt_pcixcc_driver); | |
947 | } | |
948 | ||
949 | #ifndef CONFIG_ZCRYPT_MONOLITHIC | |
950 | module_init(zcrypt_pcixcc_init); | |
951 | module_exit(zcrypt_pcixcc_exit); | |
952 | #endif |