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Commit | Line | Data |
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2dbc2418 | 1 | /* |
5432114b | 2 | * zcrypt 2.1.0 |
2dbc2418 | 3 | * |
5e55a488 | 4 | * Copyright IBM Corp. 2001, 2012 |
2dbc2418 MS |
5 | * Author(s): Robert Burroughs |
6 | * Eric Rossman (edrossma@us.ibm.com) | |
7 | * Cornelia Huck <cornelia.huck@de.ibm.com> | |
8 | * | |
9 | * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) | |
10 | * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com> | |
11 | * Ralph Wuerthner <rwuerthn@de.ibm.com> | |
5e55a488 | 12 | * MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com> |
2dbc2418 MS |
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/interrupt.h> | |
32 | #include <linux/miscdevice.h> | |
33 | #include <linux/fs.h> | |
34 | #include <linux/proc_fs.h> | |
34b9243a | 35 | #include <linux/seq_file.h> |
2dbc2418 | 36 | #include <linux/compat.h> |
5a0e3ad6 | 37 | #include <linux/slab.h> |
60063497 | 38 | #include <linux/atomic.h> |
7c0f6ba6 | 39 | #include <linux/uaccess.h> |
2f7c8bd6 | 40 | #include <linux/hw_random.h> |
dabecb29 HD |
41 | #include <linux/debugfs.h> |
42 | #include <asm/debug.h> | |
2dbc2418 | 43 | |
13b251bd HF |
44 | #define CREATE_TRACE_POINTS |
45 | #include <asm/trace/zcrypt.h> | |
46 | ||
2dbc2418 | 47 | #include "zcrypt_api.h" |
cccd85bf | 48 | #include "zcrypt_debug.h" |
2dbc2418 | 49 | |
91f3e3ea | 50 | #include "zcrypt_msgtype6.h" |
fc1d3f02 | 51 | #include "zcrypt_msgtype50.h" |
91f3e3ea | 52 | |
1749a81d | 53 | /* |
2dbc2418 MS |
54 | * Module description. |
55 | */ | |
56 | MODULE_AUTHOR("IBM Corporation"); | |
5e55a488 HD |
57 | MODULE_DESCRIPTION("Cryptographic Coprocessor interface, " \ |
58 | "Copyright IBM Corp. 2001, 2012"); | |
2dbc2418 MS |
59 | MODULE_LICENSE("GPL"); |
60 | ||
13b251bd HF |
61 | /* |
62 | * zcrypt tracepoint functions | |
63 | */ | |
64 | EXPORT_TRACEPOINT_SYMBOL(s390_zcrypt_req); | |
65 | EXPORT_TRACEPOINT_SYMBOL(s390_zcrypt_rep); | |
66 | ||
db490cb9 IT |
67 | static int zcrypt_hwrng_seed = 1; |
68 | module_param_named(hwrng_seed, zcrypt_hwrng_seed, int, S_IRUSR|S_IRGRP); | |
69 | MODULE_PARM_DESC(hwrng_seed, "Turn on/off hwrng auto seed, default is 1 (on)."); | |
70 | ||
e28d2af4 IT |
71 | DEFINE_SPINLOCK(zcrypt_list_lock); |
72 | LIST_HEAD(zcrypt_card_list); | |
73 | int zcrypt_device_count; | |
74 | ||
2dbc2418 | 75 | static atomic_t zcrypt_open_count = ATOMIC_INIT(0); |
dabecb29 HD |
76 | static atomic_t zcrypt_rescan_count = ATOMIC_INIT(0); |
77 | ||
78 | atomic_t zcrypt_rescan_req = ATOMIC_INIT(0); | |
79 | EXPORT_SYMBOL(zcrypt_rescan_req); | |
2dbc2418 | 80 | |
5e55a488 HD |
81 | static LIST_HEAD(zcrypt_ops_list); |
82 | ||
cccd85bf HF |
83 | /* Zcrypt related debug feature stuff. */ |
84 | static struct dentry *zcrypt_dbf_root; | |
85 | debug_info_t *zcrypt_dbf_info; | |
2dbc2418 | 86 | |
dabecb29 HD |
87 | /** |
88 | * Process a rescan of the transport layer. | |
89 | * | |
90 | * Returns 1, if the rescan has been processed, otherwise 0. | |
91 | */ | |
92 | static inline int zcrypt_process_rescan(void) | |
93 | { | |
94 | if (atomic_read(&zcrypt_rescan_req)) { | |
95 | atomic_set(&zcrypt_rescan_req, 0); | |
96 | atomic_inc(&zcrypt_rescan_count); | |
97 | ap_bus_force_rescan(); | |
cccd85bf HF |
98 | ZCRYPT_DBF(DBF_INFO, "rescan count=%07d", |
99 | atomic_inc_return(&zcrypt_rescan_count)); | |
dabecb29 HD |
100 | return 1; |
101 | } | |
102 | return 0; | |
103 | } | |
104 | ||
5e55a488 HD |
105 | void zcrypt_msgtype_register(struct zcrypt_ops *zops) |
106 | { | |
121a868d | 107 | list_add_tail(&zops->list, &zcrypt_ops_list); |
5e55a488 | 108 | } |
5e55a488 HD |
109 | |
110 | void zcrypt_msgtype_unregister(struct zcrypt_ops *zops) | |
111 | { | |
5e55a488 | 112 | list_del_init(&zops->list); |
5e55a488 | 113 | } |
5e55a488 | 114 | |
236fb2ab | 115 | struct zcrypt_ops *zcrypt_msgtype(unsigned char *name, int variant) |
5e55a488 HD |
116 | { |
117 | struct zcrypt_ops *zops; | |
5e55a488 | 118 | |
236fb2ab | 119 | list_for_each_entry(zops, &zcrypt_ops_list, list) |
5e55a488 | 120 | if ((zops->variant == variant) && |
236fb2ab MS |
121 | (!strncmp(zops->name, name, sizeof(zops->name)))) |
122 | return zops; | |
123 | return NULL; | |
5e55a488 | 124 | } |
236fb2ab | 125 | EXPORT_SYMBOL(zcrypt_msgtype); |
5e55a488 | 126 | |
2dbc2418 | 127 | /** |
1749a81d FB |
128 | * zcrypt_read (): Not supported beyond zcrypt 1.3.1. |
129 | * | |
130 | * This function is not supported beyond zcrypt 1.3.1. | |
2dbc2418 MS |
131 | */ |
132 | static ssize_t zcrypt_read(struct file *filp, char __user *buf, | |
133 | size_t count, loff_t *f_pos) | |
134 | { | |
135 | return -EPERM; | |
136 | } | |
137 | ||
138 | /** | |
1749a81d FB |
139 | * zcrypt_write(): Not allowed. |
140 | * | |
2dbc2418 MS |
141 | * Write is is not allowed |
142 | */ | |
143 | static ssize_t zcrypt_write(struct file *filp, const char __user *buf, | |
144 | size_t count, loff_t *f_pos) | |
145 | { | |
146 | return -EPERM; | |
147 | } | |
148 | ||
149 | /** | |
1749a81d FB |
150 | * zcrypt_open(): Count number of users. |
151 | * | |
152 | * Device open function to count number of users. | |
2dbc2418 MS |
153 | */ |
154 | static int zcrypt_open(struct inode *inode, struct file *filp) | |
155 | { | |
156 | atomic_inc(&zcrypt_open_count); | |
58ea91c0 | 157 | return nonseekable_open(inode, filp); |
2dbc2418 MS |
158 | } |
159 | ||
1749a81d FB |
160 | /** |
161 | * zcrypt_release(): Count number of users. | |
162 | * | |
163 | * Device close function to count number of users. | |
164 | */ | |
2dbc2418 MS |
165 | static int zcrypt_release(struct inode *inode, struct file *filp) |
166 | { | |
167 | atomic_dec(&zcrypt_open_count); | |
168 | return 0; | |
169 | } | |
170 | ||
e28d2af4 IT |
171 | static inline struct zcrypt_queue *zcrypt_pick_queue(struct zcrypt_card *zc, |
172 | struct zcrypt_queue *zq, | |
173 | unsigned int weight) | |
174 | { | |
175 | if (!zq || !try_module_get(zq->queue->ap_dev.drv->driver.owner)) | |
176 | return NULL; | |
177 | zcrypt_queue_get(zq); | |
178 | get_device(&zq->queue->ap_dev.device); | |
179 | atomic_add(weight, &zc->load); | |
180 | atomic_add(weight, &zq->load); | |
181 | zq->request_count++; | |
182 | return zq; | |
183 | } | |
184 | ||
185 | static inline void zcrypt_drop_queue(struct zcrypt_card *zc, | |
186 | struct zcrypt_queue *zq, | |
187 | unsigned int weight) | |
188 | { | |
189 | struct module *mod = zq->queue->ap_dev.drv->driver.owner; | |
190 | ||
191 | zq->request_count--; | |
192 | atomic_sub(weight, &zc->load); | |
193 | atomic_sub(weight, &zq->load); | |
194 | put_device(&zq->queue->ap_dev.device); | |
195 | zcrypt_queue_put(zq); | |
196 | module_put(mod); | |
197 | } | |
198 | ||
e47de21d IT |
199 | static inline bool zcrypt_card_compare(struct zcrypt_card *zc, |
200 | struct zcrypt_card *pref_zc, | |
201 | unsigned weight, unsigned pref_weight) | |
202 | { | |
203 | if (!pref_zc) | |
204 | return 0; | |
205 | weight += atomic_read(&zc->load); | |
206 | pref_weight += atomic_read(&pref_zc->load); | |
207 | if (weight == pref_weight) | |
208 | return atomic_read(&zc->card->total_request_count) > | |
209 | atomic_read(&pref_zc->card->total_request_count); | |
210 | return weight > pref_weight; | |
211 | } | |
212 | ||
213 | static inline bool zcrypt_queue_compare(struct zcrypt_queue *zq, | |
214 | struct zcrypt_queue *pref_zq, | |
215 | unsigned weight, unsigned pref_weight) | |
216 | { | |
217 | if (!pref_zq) | |
218 | return 0; | |
219 | weight += atomic_read(&zq->load); | |
220 | pref_weight += atomic_read(&pref_zq->load); | |
221 | if (weight == pref_weight) | |
222 | return &zq->queue->total_request_count > | |
223 | &pref_zq->queue->total_request_count; | |
224 | return weight > pref_weight; | |
225 | } | |
226 | ||
1749a81d | 227 | /* |
2dbc2418 MS |
228 | * zcrypt ioctls. |
229 | */ | |
230 | static long zcrypt_rsa_modexpo(struct ica_rsa_modexpo *mex) | |
231 | { | |
e28d2af4 IT |
232 | struct zcrypt_card *zc, *pref_zc; |
233 | struct zcrypt_queue *zq, *pref_zq; | |
234 | unsigned int weight, pref_weight; | |
235 | unsigned int func_code; | |
13b251bd HF |
236 | int qid = 0, rc = -ENODEV; |
237 | ||
238 | trace_s390_zcrypt_req(mex, TP_ICARSAMODEXPO); | |
239 | ||
240 | if (mex->outputdatalength < mex->inputdatalength) { | |
241 | rc = -EINVAL; | |
242 | goto out; | |
243 | } | |
2dbc2418 | 244 | |
1749a81d | 245 | /* |
2dbc2418 MS |
246 | * As long as outputdatalength is big enough, we can set the |
247 | * outputdatalength equal to the inputdatalength, since that is the | |
248 | * number of bytes we will copy in any case | |
249 | */ | |
250 | mex->outputdatalength = mex->inputdatalength; | |
251 | ||
34a15167 IT |
252 | rc = get_rsa_modex_fc(mex, &func_code); |
253 | if (rc) | |
13b251bd | 254 | goto out; |
34a15167 | 255 | |
e28d2af4 IT |
256 | pref_zc = NULL; |
257 | pref_zq = NULL; | |
258 | spin_lock(&zcrypt_list_lock); | |
259 | for_each_zcrypt_card(zc) { | |
260 | /* Check for online accelarator and CCA cards */ | |
261 | if (!zc->online || !(zc->card->functions & 0x18000000)) | |
2dbc2418 | 262 | continue; |
e28d2af4 IT |
263 | /* Check for size limits */ |
264 | if (zc->min_mod_size > mex->inputdatalength || | |
265 | zc->max_mod_size < mex->inputdatalength) | |
34a15167 | 266 | continue; |
e28d2af4 IT |
267 | /* get weight index of the card device */ |
268 | weight = zc->speed_rating[func_code]; | |
e47de21d | 269 | if (zcrypt_card_compare(zc, pref_zc, weight, pref_weight)) |
34a15167 | 270 | continue; |
e28d2af4 IT |
271 | for_each_zcrypt_queue(zq, zc) { |
272 | /* check if device is online and eligible */ | |
14878424 | 273 | if (!zq->online || !zq->ops->rsa_modexpo) |
e28d2af4 | 274 | continue; |
e47de21d IT |
275 | if (zcrypt_queue_compare(zq, pref_zq, |
276 | weight, pref_weight)) | |
e28d2af4 IT |
277 | continue; |
278 | pref_zc = zc; | |
279 | pref_zq = zq; | |
280 | pref_weight = weight; | |
2dbc2418 | 281 | } |
34a15167 | 282 | } |
e28d2af4 IT |
283 | pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight); |
284 | spin_unlock(&zcrypt_list_lock); | |
34a15167 | 285 | |
13b251bd HF |
286 | if (!pref_zq) { |
287 | rc = -ENODEV; | |
288 | goto out; | |
289 | } | |
34a15167 | 290 | |
13b251bd | 291 | qid = pref_zq->queue->qid; |
e28d2af4 IT |
292 | rc = pref_zq->ops->rsa_modexpo(pref_zq, mex); |
293 | ||
294 | spin_lock(&zcrypt_list_lock); | |
295 | zcrypt_drop_queue(pref_zc, pref_zq, weight); | |
296 | spin_unlock(&zcrypt_list_lock); | |
297 | ||
13b251bd HF |
298 | out: |
299 | trace_s390_zcrypt_rep(mex, func_code, rc, | |
300 | AP_QID_CARD(qid), AP_QID_QUEUE(qid)); | |
34a15167 | 301 | return rc; |
2dbc2418 MS |
302 | } |
303 | ||
304 | static long zcrypt_rsa_crt(struct ica_rsa_modexpo_crt *crt) | |
305 | { | |
e28d2af4 IT |
306 | struct zcrypt_card *zc, *pref_zc; |
307 | struct zcrypt_queue *zq, *pref_zq; | |
308 | unsigned int weight, pref_weight; | |
309 | unsigned int func_code; | |
13b251bd HF |
310 | int qid = 0, rc = -ENODEV; |
311 | ||
312 | trace_s390_zcrypt_req(crt, TP_ICARSACRT); | |
313 | ||
314 | if (crt->outputdatalength < crt->inputdatalength) { | |
315 | rc = -EINVAL; | |
316 | goto out; | |
317 | } | |
2dbc2418 | 318 | |
1749a81d | 319 | /* |
2dbc2418 MS |
320 | * As long as outputdatalength is big enough, we can set the |
321 | * outputdatalength equal to the inputdatalength, since that is the | |
322 | * number of bytes we will copy in any case | |
323 | */ | |
324 | crt->outputdatalength = crt->inputdatalength; | |
325 | ||
34a15167 IT |
326 | rc = get_rsa_crt_fc(crt, &func_code); |
327 | if (rc) | |
13b251bd | 328 | goto out; |
34a15167 | 329 | |
e28d2af4 IT |
330 | pref_zc = NULL; |
331 | pref_zq = NULL; | |
332 | spin_lock(&zcrypt_list_lock); | |
333 | for_each_zcrypt_card(zc) { | |
334 | /* Check for online accelarator and CCA cards */ | |
335 | if (!zc->online || !(zc->card->functions & 0x18000000)) | |
2dbc2418 | 336 | continue; |
e28d2af4 IT |
337 | /* Check for size limits */ |
338 | if (zc->min_mod_size > crt->inputdatalength || | |
339 | zc->max_mod_size < crt->inputdatalength) | |
34a15167 | 340 | continue; |
e28d2af4 IT |
341 | /* get weight index of the card device */ |
342 | weight = zc->speed_rating[func_code]; | |
e47de21d | 343 | if (zcrypt_card_compare(zc, pref_zc, weight, pref_weight)) |
34a15167 | 344 | continue; |
e28d2af4 IT |
345 | for_each_zcrypt_queue(zq, zc) { |
346 | /* check if device is online and eligible */ | |
14878424 | 347 | if (!zq->online || !zq->ops->rsa_modexpo_crt) |
e28d2af4 | 348 | continue; |
e47de21d IT |
349 | if (zcrypt_queue_compare(zq, pref_zq, |
350 | weight, pref_weight)) | |
e28d2af4 IT |
351 | continue; |
352 | pref_zc = zc; | |
353 | pref_zq = zq; | |
354 | pref_weight = weight; | |
2dbc2418 | 355 | } |
34a15167 | 356 | } |
e28d2af4 IT |
357 | pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight); |
358 | spin_unlock(&zcrypt_list_lock); | |
359 | ||
13b251bd HF |
360 | if (!pref_zq) { |
361 | rc = -ENODEV; | |
362 | goto out; | |
363 | } | |
e28d2af4 | 364 | |
13b251bd | 365 | qid = pref_zq->queue->qid; |
e28d2af4 IT |
366 | rc = pref_zq->ops->rsa_modexpo_crt(pref_zq, crt); |
367 | ||
368 | spin_lock(&zcrypt_list_lock); | |
369 | zcrypt_drop_queue(pref_zc, pref_zq, weight); | |
370 | spin_unlock(&zcrypt_list_lock); | |
371 | ||
13b251bd HF |
372 | out: |
373 | trace_s390_zcrypt_rep(crt, func_code, rc, | |
374 | AP_QID_CARD(qid), AP_QID_QUEUE(qid)); | |
34a15167 | 375 | return rc; |
2dbc2418 MS |
376 | } |
377 | ||
5432114b RW |
378 | static long zcrypt_send_cprb(struct ica_xcRB *xcRB) |
379 | { | |
e28d2af4 IT |
380 | struct zcrypt_card *zc, *pref_zc; |
381 | struct zcrypt_queue *zq, *pref_zq; | |
34a15167 | 382 | struct ap_message ap_msg; |
e28d2af4 IT |
383 | unsigned int weight, pref_weight; |
384 | unsigned int func_code; | |
385 | unsigned short *domain; | |
13b251bd HF |
386 | int qid = 0, rc = -ENODEV; |
387 | ||
388 | trace_s390_zcrypt_req(xcRB, TB_ZSECSENDCPRB); | |
34a15167 | 389 | |
e28d2af4 | 390 | rc = get_cprb_fc(xcRB, &ap_msg, &func_code, &domain); |
34a15167 | 391 | if (rc) |
13b251bd | 392 | goto out; |
5432114b | 393 | |
e28d2af4 IT |
394 | pref_zc = NULL; |
395 | pref_zq = NULL; | |
396 | spin_lock(&zcrypt_list_lock); | |
397 | for_each_zcrypt_card(zc) { | |
398 | /* Check for online CCA cards */ | |
399 | if (!zc->online || !(zc->card->functions & 0x10000000)) | |
5432114b | 400 | continue; |
e28d2af4 IT |
401 | /* Check for user selected CCA card */ |
402 | if (xcRB->user_defined != AUTOSELECT && | |
403 | xcRB->user_defined != zc->card->id) | |
34a15167 | 404 | continue; |
e28d2af4 IT |
405 | /* get weight index of the card device */ |
406 | weight = speed_idx_cca(func_code) * zc->speed_rating[SECKEY]; | |
e47de21d | 407 | if (zcrypt_card_compare(zc, pref_zc, weight, pref_weight)) |
34a15167 | 408 | continue; |
e28d2af4 IT |
409 | for_each_zcrypt_queue(zq, zc) { |
410 | /* check if device is online and eligible */ | |
411 | if (!zq->online || | |
14878424 | 412 | !zq->ops->send_cprb || |
e28d2af4 IT |
413 | ((*domain != (unsigned short) AUTOSELECT) && |
414 | (*domain != AP_QID_QUEUE(zq->queue->qid)))) | |
415 | continue; | |
e47de21d IT |
416 | if (zcrypt_queue_compare(zq, pref_zq, |
417 | weight, pref_weight)) | |
e28d2af4 IT |
418 | continue; |
419 | pref_zc = zc; | |
420 | pref_zq = zq; | |
421 | pref_weight = weight; | |
5432114b | 422 | } |
34a15167 | 423 | } |
e28d2af4 IT |
424 | pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight); |
425 | spin_unlock(&zcrypt_list_lock); | |
426 | ||
13b251bd HF |
427 | if (!pref_zq) { |
428 | rc = -ENODEV; | |
429 | goto out; | |
430 | } | |
e28d2af4 IT |
431 | |
432 | /* in case of auto select, provide the correct domain */ | |
13b251bd | 433 | qid = pref_zq->queue->qid; |
e28d2af4 | 434 | if (*domain == (unsigned short) AUTOSELECT) |
13b251bd | 435 | *domain = AP_QID_QUEUE(qid); |
e28d2af4 IT |
436 | |
437 | rc = pref_zq->ops->send_cprb(pref_zq, xcRB, &ap_msg); | |
438 | ||
439 | spin_lock(&zcrypt_list_lock); | |
440 | zcrypt_drop_queue(pref_zc, pref_zq, weight); | |
441 | spin_unlock(&zcrypt_list_lock); | |
13b251bd HF |
442 | |
443 | out: | |
444 | trace_s390_zcrypt_rep(xcRB, func_code, rc, | |
445 | AP_QID_CARD(qid), AP_QID_QUEUE(qid)); | |
34a15167 | 446 | return rc; |
5432114b RW |
447 | } |
448 | ||
e28d2af4 IT |
449 | static bool is_desired_ep11_card(unsigned int dev_id, |
450 | unsigned short target_num, | |
451 | struct ep11_target_dev *targets) | |
91f3e3ea | 452 | { |
e28d2af4 IT |
453 | while (target_num-- > 0) { |
454 | if (dev_id == targets->ap_id) | |
455 | return true; | |
456 | targets++; | |
457 | } | |
458 | return false; | |
459 | } | |
91f3e3ea | 460 | |
e28d2af4 IT |
461 | static bool is_desired_ep11_queue(unsigned int dev_qid, |
462 | unsigned short target_num, | |
463 | struct ep11_target_dev *targets) | |
464 | { | |
465 | while (target_num-- > 0) { | |
466 | if (AP_MKQID(targets->ap_id, targets->dom_id) == dev_qid) | |
91f3e3ea | 467 | return true; |
e28d2af4 | 468 | targets++; |
91f3e3ea IT |
469 | } |
470 | return false; | |
471 | } | |
472 | ||
473 | static long zcrypt_send_ep11_cprb(struct ep11_urb *xcrb) | |
474 | { | |
e28d2af4 IT |
475 | struct zcrypt_card *zc, *pref_zc; |
476 | struct zcrypt_queue *zq, *pref_zq; | |
477 | struct ep11_target_dev *targets; | |
478 | unsigned short target_num; | |
479 | unsigned int weight, pref_weight; | |
480 | unsigned int func_code; | |
34a15167 | 481 | struct ap_message ap_msg; |
13b251bd HF |
482 | int qid = 0, rc = -ENODEV; |
483 | ||
484 | trace_s390_zcrypt_req(xcrb, TP_ZSENDEP11CPRB); | |
91f3e3ea | 485 | |
e28d2af4 | 486 | target_num = (unsigned short) xcrb->targets_num; |
91f3e3ea IT |
487 | |
488 | /* empty list indicates autoselect (all available targets) */ | |
e28d2af4 IT |
489 | targets = NULL; |
490 | if (target_num != 0) { | |
491 | struct ep11_target_dev __user *uptr; | |
492 | ||
493 | targets = kcalloc(target_num, sizeof(*targets), GFP_KERNEL); | |
13b251bd HF |
494 | if (!targets) { |
495 | rc = -ENOMEM; | |
496 | goto out; | |
497 | } | |
91f3e3ea | 498 | |
e28d2af4 IT |
499 | uptr = (struct ep11_target_dev __force __user *) xcrb->targets; |
500 | if (copy_from_user(targets, uptr, | |
13b251bd HF |
501 | target_num * sizeof(*targets))) { |
502 | rc = -EFAULT; | |
503 | goto out; | |
504 | } | |
91f3e3ea IT |
505 | } |
506 | ||
34a15167 IT |
507 | rc = get_ep11cprb_fc(xcrb, &ap_msg, &func_code); |
508 | if (rc) | |
e28d2af4 | 509 | goto out_free; |
34a15167 | 510 | |
e28d2af4 IT |
511 | pref_zc = NULL; |
512 | pref_zq = NULL; | |
513 | spin_lock(&zcrypt_list_lock); | |
514 | for_each_zcrypt_card(zc) { | |
515 | /* Check for online EP11 cards */ | |
516 | if (!zc->online || !(zc->card->functions & 0x04000000)) | |
91f3e3ea | 517 | continue; |
e28d2af4 IT |
518 | /* Check for user selected EP11 card */ |
519 | if (targets && | |
520 | !is_desired_ep11_card(zc->card->id, target_num, targets)) | |
91f3e3ea | 521 | continue; |
e28d2af4 IT |
522 | /* get weight index of the card device */ |
523 | weight = speed_idx_ep11(func_code) * zc->speed_rating[SECKEY]; | |
e47de21d | 524 | if (zcrypt_card_compare(zc, pref_zc, weight, pref_weight)) |
34a15167 | 525 | continue; |
e28d2af4 IT |
526 | for_each_zcrypt_queue(zq, zc) { |
527 | /* check if device is online and eligible */ | |
528 | if (!zq->online || | |
14878424 | 529 | !zq->ops->send_ep11_cprb || |
e28d2af4 IT |
530 | (targets && |
531 | !is_desired_ep11_queue(zq->queue->qid, | |
532 | target_num, targets))) | |
533 | continue; | |
e47de21d IT |
534 | if (zcrypt_queue_compare(zq, pref_zq, |
535 | weight, pref_weight)) | |
e28d2af4 IT |
536 | continue; |
537 | pref_zc = zc; | |
538 | pref_zq = zq; | |
34a15167 | 539 | pref_weight = weight; |
34a15167 | 540 | } |
91f3e3ea | 541 | } |
e28d2af4 IT |
542 | pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight); |
543 | spin_unlock(&zcrypt_list_lock); | |
34a15167 | 544 | |
e28d2af4 IT |
545 | if (!pref_zq) { |
546 | rc = -ENODEV; | |
547 | goto out_free; | |
34a15167 | 548 | } |
e28d2af4 | 549 | |
13b251bd | 550 | qid = pref_zq->queue->qid; |
e28d2af4 IT |
551 | rc = pref_zq->ops->send_ep11_cprb(pref_zq, xcrb, &ap_msg); |
552 | ||
553 | spin_lock(&zcrypt_list_lock); | |
554 | zcrypt_drop_queue(pref_zc, pref_zq, weight); | |
555 | spin_unlock(&zcrypt_list_lock); | |
556 | ||
557 | out_free: | |
558 | kfree(targets); | |
13b251bd HF |
559 | out: |
560 | trace_s390_zcrypt_rep(xcrb, func_code, rc, | |
561 | AP_QID_CARD(qid), AP_QID_QUEUE(qid)); | |
34a15167 | 562 | return rc; |
91f3e3ea IT |
563 | } |
564 | ||
2f7c8bd6 RW |
565 | static long zcrypt_rng(char *buffer) |
566 | { | |
e28d2af4 IT |
567 | struct zcrypt_card *zc, *pref_zc; |
568 | struct zcrypt_queue *zq, *pref_zq; | |
569 | unsigned int weight, pref_weight; | |
570 | unsigned int func_code; | |
34a15167 | 571 | struct ap_message ap_msg; |
e28d2af4 | 572 | unsigned int domain; |
13b251bd HF |
573 | int qid = 0, rc = -ENODEV; |
574 | ||
575 | trace_s390_zcrypt_req(buffer, TP_HWRNGCPRB); | |
2f7c8bd6 | 576 | |
e28d2af4 | 577 | rc = get_rng_fc(&ap_msg, &func_code, &domain); |
34a15167 | 578 | if (rc) |
13b251bd | 579 | goto out; |
34a15167 | 580 | |
e28d2af4 IT |
581 | pref_zc = NULL; |
582 | pref_zq = NULL; | |
583 | spin_lock(&zcrypt_list_lock); | |
584 | for_each_zcrypt_card(zc) { | |
585 | /* Check for online CCA cards */ | |
586 | if (!zc->online || !(zc->card->functions & 0x10000000)) | |
2f7c8bd6 | 587 | continue; |
e28d2af4 IT |
588 | /* get weight index of the card device */ |
589 | weight = zc->speed_rating[func_code]; | |
e47de21d | 590 | if (zcrypt_card_compare(zc, pref_zc, weight, pref_weight)) |
34a15167 | 591 | continue; |
e28d2af4 IT |
592 | for_each_zcrypt_queue(zq, zc) { |
593 | /* check if device is online and eligible */ | |
14878424 | 594 | if (!zq->online || !zq->ops->rng) |
e28d2af4 | 595 | continue; |
e47de21d IT |
596 | if (zcrypt_queue_compare(zq, pref_zq, |
597 | weight, pref_weight)) | |
e28d2af4 IT |
598 | continue; |
599 | pref_zc = zc; | |
600 | pref_zq = zq; | |
34a15167 | 601 | pref_weight = weight; |
34a15167 | 602 | } |
34a15167 | 603 | } |
e28d2af4 IT |
604 | pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight); |
605 | spin_unlock(&zcrypt_list_lock); | |
606 | ||
607 | if (!pref_zq) | |
34a15167 | 608 | return -ENODEV; |
34a15167 | 609 | |
13b251bd | 610 | qid = pref_zq->queue->qid; |
e28d2af4 IT |
611 | rc = pref_zq->ops->rng(pref_zq, buffer, &ap_msg); |
612 | ||
613 | spin_lock(&zcrypt_list_lock); | |
614 | zcrypt_drop_queue(pref_zc, pref_zq, weight); | |
615 | spin_unlock(&zcrypt_list_lock); | |
13b251bd HF |
616 | |
617 | out: | |
618 | trace_s390_zcrypt_rep(buffer, func_code, rc, | |
619 | AP_QID_CARD(qid), AP_QID_QUEUE(qid)); | |
34a15167 | 620 | return rc; |
2f7c8bd6 RW |
621 | } |
622 | ||
b886a9d1 IT |
623 | static void zcrypt_device_status_mask(struct zcrypt_device_matrix *matrix) |
624 | { | |
625 | struct zcrypt_card *zc; | |
626 | struct zcrypt_queue *zq; | |
627 | struct zcrypt_device_status *stat; | |
628 | ||
629 | memset(matrix, 0, sizeof(*matrix)); | |
630 | spin_lock(&zcrypt_list_lock); | |
631 | for_each_zcrypt_card(zc) { | |
632 | for_each_zcrypt_queue(zq, zc) { | |
633 | stat = matrix->device; | |
634 | stat += AP_QID_CARD(zq->queue->qid) * MAX_ZDEV_DOMAINS; | |
635 | stat += AP_QID_QUEUE(zq->queue->qid); | |
636 | stat->hwtype = zc->card->ap_dev.device_type; | |
637 | stat->functions = zc->card->functions >> 26; | |
638 | stat->qid = zq->queue->qid; | |
639 | stat->online = zq->online ? 0x01 : 0x00; | |
640 | } | |
641 | } | |
642 | spin_unlock(&zcrypt_list_lock); | |
643 | } | |
644 | EXPORT_SYMBOL(zcrypt_device_status_mask); | |
645 | ||
2dbc2418 MS |
646 | static void zcrypt_status_mask(char status[AP_DEVICES]) |
647 | { | |
e28d2af4 IT |
648 | struct zcrypt_card *zc; |
649 | struct zcrypt_queue *zq; | |
2dbc2418 MS |
650 | |
651 | memset(status, 0, sizeof(char) * AP_DEVICES); | |
e28d2af4 IT |
652 | spin_lock(&zcrypt_list_lock); |
653 | for_each_zcrypt_card(zc) { | |
654 | for_each_zcrypt_queue(zq, zc) { | |
655 | if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index) | |
656 | continue; | |
657 | status[AP_QID_CARD(zq->queue->qid)] = | |
658 | zc->online ? zc->user_space_type : 0x0d; | |
659 | } | |
660 | } | |
661 | spin_unlock(&zcrypt_list_lock); | |
2dbc2418 MS |
662 | } |
663 | ||
664 | static void zcrypt_qdepth_mask(char qdepth[AP_DEVICES]) | |
665 | { | |
e28d2af4 IT |
666 | struct zcrypt_card *zc; |
667 | struct zcrypt_queue *zq; | |
2dbc2418 MS |
668 | |
669 | memset(qdepth, 0, sizeof(char) * AP_DEVICES); | |
e28d2af4 IT |
670 | spin_lock(&zcrypt_list_lock); |
671 | for_each_zcrypt_card(zc) { | |
672 | for_each_zcrypt_queue(zq, zc) { | |
673 | if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index) | |
674 | continue; | |
675 | spin_lock(&zq->queue->lock); | |
676 | qdepth[AP_QID_CARD(zq->queue->qid)] = | |
677 | zq->queue->pendingq_count + | |
678 | zq->queue->requestq_count; | |
679 | spin_unlock(&zq->queue->lock); | |
680 | } | |
2dbc2418 | 681 | } |
e28d2af4 | 682 | spin_unlock(&zcrypt_list_lock); |
2dbc2418 MS |
683 | } |
684 | ||
685 | static void zcrypt_perdev_reqcnt(int reqcnt[AP_DEVICES]) | |
686 | { | |
e28d2af4 IT |
687 | struct zcrypt_card *zc; |
688 | struct zcrypt_queue *zq; | |
2dbc2418 MS |
689 | |
690 | memset(reqcnt, 0, sizeof(int) * AP_DEVICES); | |
e28d2af4 IT |
691 | spin_lock(&zcrypt_list_lock); |
692 | for_each_zcrypt_card(zc) { | |
693 | for_each_zcrypt_queue(zq, zc) { | |
694 | if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index) | |
695 | continue; | |
696 | spin_lock(&zq->queue->lock); | |
697 | reqcnt[AP_QID_CARD(zq->queue->qid)] = | |
698 | zq->queue->total_request_count; | |
699 | spin_unlock(&zq->queue->lock); | |
700 | } | |
2dbc2418 | 701 | } |
e28d2af4 | 702 | spin_unlock(&zcrypt_list_lock); |
2dbc2418 MS |
703 | } |
704 | ||
705 | static int zcrypt_pendingq_count(void) | |
706 | { | |
e28d2af4 IT |
707 | struct zcrypt_card *zc; |
708 | struct zcrypt_queue *zq; | |
709 | int pendingq_count; | |
710 | ||
711 | pendingq_count = 0; | |
712 | spin_lock(&zcrypt_list_lock); | |
713 | for_each_zcrypt_card(zc) { | |
714 | for_each_zcrypt_queue(zq, zc) { | |
715 | if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index) | |
716 | continue; | |
717 | spin_lock(&zq->queue->lock); | |
718 | pendingq_count += zq->queue->pendingq_count; | |
719 | spin_unlock(&zq->queue->lock); | |
720 | } | |
2dbc2418 | 721 | } |
e28d2af4 | 722 | spin_unlock(&zcrypt_list_lock); |
2dbc2418 MS |
723 | return pendingq_count; |
724 | } | |
725 | ||
726 | static int zcrypt_requestq_count(void) | |
727 | { | |
e28d2af4 IT |
728 | struct zcrypt_card *zc; |
729 | struct zcrypt_queue *zq; | |
730 | int requestq_count; | |
731 | ||
732 | requestq_count = 0; | |
733 | spin_lock(&zcrypt_list_lock); | |
734 | for_each_zcrypt_card(zc) { | |
735 | for_each_zcrypt_queue(zq, zc) { | |
736 | if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index) | |
737 | continue; | |
738 | spin_lock(&zq->queue->lock); | |
739 | requestq_count += zq->queue->requestq_count; | |
740 | spin_unlock(&zq->queue->lock); | |
741 | } | |
2dbc2418 | 742 | } |
e28d2af4 | 743 | spin_unlock(&zcrypt_list_lock); |
2dbc2418 MS |
744 | return requestq_count; |
745 | } | |
746 | ||
747 | static int zcrypt_count_type(int type) | |
748 | { | |
e28d2af4 IT |
749 | struct zcrypt_card *zc; |
750 | struct zcrypt_queue *zq; | |
751 | int device_count; | |
752 | ||
753 | device_count = 0; | |
754 | spin_lock(&zcrypt_list_lock); | |
755 | for_each_zcrypt_card(zc) { | |
756 | if (zc->card->id != type) | |
757 | continue; | |
758 | for_each_zcrypt_queue(zq, zc) { | |
759 | if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index) | |
760 | continue; | |
2dbc2418 | 761 | device_count++; |
e28d2af4 IT |
762 | } |
763 | } | |
764 | spin_unlock(&zcrypt_list_lock); | |
2dbc2418 MS |
765 | return device_count; |
766 | } | |
767 | ||
768 | /** | |
1749a81d FB |
769 | * zcrypt_ica_status(): Old, depracted combi status call. |
770 | * | |
2dbc2418 MS |
771 | * Old, deprecated combi status call. |
772 | */ | |
773 | static long zcrypt_ica_status(struct file *filp, unsigned long arg) | |
774 | { | |
775 | struct ica_z90_status *pstat; | |
776 | int ret; | |
777 | ||
778 | pstat = kzalloc(sizeof(*pstat), GFP_KERNEL); | |
779 | if (!pstat) | |
780 | return -ENOMEM; | |
781 | pstat->totalcount = zcrypt_device_count; | |
782 | pstat->leedslitecount = zcrypt_count_type(ZCRYPT_PCICA); | |
783 | pstat->leeds2count = zcrypt_count_type(ZCRYPT_PCICC); | |
784 | pstat->requestqWaitCount = zcrypt_requestq_count(); | |
785 | pstat->pendingqWaitCount = zcrypt_pendingq_count(); | |
786 | pstat->totalOpenCount = atomic_read(&zcrypt_open_count); | |
787 | pstat->cryptoDomain = ap_domain_index; | |
788 | zcrypt_status_mask(pstat->status); | |
789 | zcrypt_qdepth_mask(pstat->qdepth); | |
790 | ret = 0; | |
791 | if (copy_to_user((void __user *) arg, pstat, sizeof(*pstat))) | |
792 | ret = -EFAULT; | |
793 | kfree(pstat); | |
794 | return ret; | |
795 | } | |
796 | ||
797 | static long zcrypt_unlocked_ioctl(struct file *filp, unsigned int cmd, | |
798 | unsigned long arg) | |
799 | { | |
800 | int rc; | |
801 | ||
802 | switch (cmd) { | |
803 | case ICARSAMODEXPO: { | |
804 | struct ica_rsa_modexpo __user *umex = (void __user *) arg; | |
805 | struct ica_rsa_modexpo mex; | |
806 | if (copy_from_user(&mex, umex, sizeof(mex))) | |
807 | return -EFAULT; | |
808 | do { | |
809 | rc = zcrypt_rsa_modexpo(&mex); | |
810 | } while (rc == -EAGAIN); | |
dabecb29 HD |
811 | /* on failure: retry once again after a requested rescan */ |
812 | if ((rc == -ENODEV) && (zcrypt_process_rescan())) | |
813 | do { | |
814 | rc = zcrypt_rsa_modexpo(&mex); | |
815 | } while (rc == -EAGAIN); | |
2dbc2418 MS |
816 | if (rc) |
817 | return rc; | |
818 | return put_user(mex.outputdatalength, &umex->outputdatalength); | |
819 | } | |
820 | case ICARSACRT: { | |
821 | struct ica_rsa_modexpo_crt __user *ucrt = (void __user *) arg; | |
822 | struct ica_rsa_modexpo_crt crt; | |
823 | if (copy_from_user(&crt, ucrt, sizeof(crt))) | |
824 | return -EFAULT; | |
825 | do { | |
826 | rc = zcrypt_rsa_crt(&crt); | |
827 | } while (rc == -EAGAIN); | |
dabecb29 HD |
828 | /* on failure: retry once again after a requested rescan */ |
829 | if ((rc == -ENODEV) && (zcrypt_process_rescan())) | |
830 | do { | |
831 | rc = zcrypt_rsa_crt(&crt); | |
832 | } while (rc == -EAGAIN); | |
2dbc2418 MS |
833 | if (rc) |
834 | return rc; | |
835 | return put_user(crt.outputdatalength, &ucrt->outputdatalength); | |
836 | } | |
5432114b RW |
837 | case ZSECSENDCPRB: { |
838 | struct ica_xcRB __user *uxcRB = (void __user *) arg; | |
839 | struct ica_xcRB xcRB; | |
840 | if (copy_from_user(&xcRB, uxcRB, sizeof(xcRB))) | |
841 | return -EFAULT; | |
842 | do { | |
843 | rc = zcrypt_send_cprb(&xcRB); | |
844 | } while (rc == -EAGAIN); | |
dabecb29 HD |
845 | /* on failure: retry once again after a requested rescan */ |
846 | if ((rc == -ENODEV) && (zcrypt_process_rescan())) | |
847 | do { | |
848 | rc = zcrypt_send_cprb(&xcRB); | |
849 | } while (rc == -EAGAIN); | |
5432114b RW |
850 | if (copy_to_user(uxcRB, &xcRB, sizeof(xcRB))) |
851 | return -EFAULT; | |
852 | return rc; | |
853 | } | |
91f3e3ea IT |
854 | case ZSENDEP11CPRB: { |
855 | struct ep11_urb __user *uxcrb = (void __user *)arg; | |
856 | struct ep11_urb xcrb; | |
857 | if (copy_from_user(&xcrb, uxcrb, sizeof(xcrb))) | |
858 | return -EFAULT; | |
859 | do { | |
860 | rc = zcrypt_send_ep11_cprb(&xcrb); | |
861 | } while (rc == -EAGAIN); | |
862 | /* on failure: retry once again after a requested rescan */ | |
863 | if ((rc == -ENODEV) && (zcrypt_process_rescan())) | |
864 | do { | |
865 | rc = zcrypt_send_ep11_cprb(&xcrb); | |
866 | } while (rc == -EAGAIN); | |
867 | if (copy_to_user(uxcrb, &xcrb, sizeof(xcrb))) | |
868 | return -EFAULT; | |
869 | return rc; | |
870 | } | |
b886a9d1 IT |
871 | case ZDEVICESTATUS: { |
872 | struct zcrypt_device_matrix *device_status; | |
873 | ||
874 | device_status = kzalloc(sizeof(struct zcrypt_device_matrix), | |
875 | GFP_KERNEL); | |
876 | if (!device_status) | |
877 | return -ENOMEM; | |
878 | ||
879 | zcrypt_device_status_mask(device_status); | |
880 | ||
881 | if (copy_to_user((char __user *) arg, device_status, | |
882 | sizeof(struct zcrypt_device_matrix))) { | |
883 | kfree(device_status); | |
884 | return -EFAULT; | |
885 | } | |
886 | ||
887 | kfree(device_status); | |
888 | return 0; | |
889 | } | |
2dbc2418 MS |
890 | case Z90STAT_STATUS_MASK: { |
891 | char status[AP_DEVICES]; | |
892 | zcrypt_status_mask(status); | |
893 | if (copy_to_user((char __user *) arg, status, | |
894 | sizeof(char) * AP_DEVICES)) | |
895 | return -EFAULT; | |
896 | return 0; | |
897 | } | |
898 | case Z90STAT_QDEPTH_MASK: { | |
899 | char qdepth[AP_DEVICES]; | |
900 | zcrypt_qdepth_mask(qdepth); | |
901 | if (copy_to_user((char __user *) arg, qdepth, | |
902 | sizeof(char) * AP_DEVICES)) | |
903 | return -EFAULT; | |
904 | return 0; | |
905 | } | |
906 | case Z90STAT_PERDEV_REQCNT: { | |
907 | int reqcnt[AP_DEVICES]; | |
908 | zcrypt_perdev_reqcnt(reqcnt); | |
909 | if (copy_to_user((int __user *) arg, reqcnt, | |
910 | sizeof(int) * AP_DEVICES)) | |
911 | return -EFAULT; | |
912 | return 0; | |
913 | } | |
914 | case Z90STAT_REQUESTQ_COUNT: | |
915 | return put_user(zcrypt_requestq_count(), (int __user *) arg); | |
916 | case Z90STAT_PENDINGQ_COUNT: | |
917 | return put_user(zcrypt_pendingq_count(), (int __user *) arg); | |
918 | case Z90STAT_TOTALOPEN_COUNT: | |
919 | return put_user(atomic_read(&zcrypt_open_count), | |
920 | (int __user *) arg); | |
921 | case Z90STAT_DOMAIN_INDEX: | |
922 | return put_user(ap_domain_index, (int __user *) arg); | |
1749a81d | 923 | /* |
2dbc2418 MS |
924 | * Deprecated ioctls. Don't add another device count ioctl, |
925 | * you can count them yourself in the user space with the | |
926 | * output of the Z90STAT_STATUS_MASK ioctl. | |
927 | */ | |
928 | case ICAZ90STATUS: | |
929 | return zcrypt_ica_status(filp, arg); | |
930 | case Z90STAT_TOTALCOUNT: | |
931 | return put_user(zcrypt_device_count, (int __user *) arg); | |
932 | case Z90STAT_PCICACOUNT: | |
933 | return put_user(zcrypt_count_type(ZCRYPT_PCICA), | |
934 | (int __user *) arg); | |
935 | case Z90STAT_PCICCCOUNT: | |
936 | return put_user(zcrypt_count_type(ZCRYPT_PCICC), | |
937 | (int __user *) arg); | |
938 | case Z90STAT_PCIXCCMCL2COUNT: | |
939 | return put_user(zcrypt_count_type(ZCRYPT_PCIXCC_MCL2), | |
940 | (int __user *) arg); | |
941 | case Z90STAT_PCIXCCMCL3COUNT: | |
942 | return put_user(zcrypt_count_type(ZCRYPT_PCIXCC_MCL3), | |
943 | (int __user *) arg); | |
944 | case Z90STAT_PCIXCCCOUNT: | |
945 | return put_user(zcrypt_count_type(ZCRYPT_PCIXCC_MCL2) + | |
946 | zcrypt_count_type(ZCRYPT_PCIXCC_MCL3), | |
947 | (int __user *) arg); | |
948 | case Z90STAT_CEX2CCOUNT: | |
949 | return put_user(zcrypt_count_type(ZCRYPT_CEX2C), | |
950 | (int __user *) arg); | |
951 | case Z90STAT_CEX2ACOUNT: | |
952 | return put_user(zcrypt_count_type(ZCRYPT_CEX2A), | |
953 | (int __user *) arg); | |
954 | default: | |
955 | /* unknown ioctl number */ | |
956 | return -ENOIOCTLCMD; | |
957 | } | |
958 | } | |
959 | ||
960 | #ifdef CONFIG_COMPAT | |
1749a81d | 961 | /* |
2dbc2418 MS |
962 | * ioctl32 conversion routines |
963 | */ | |
964 | struct compat_ica_rsa_modexpo { | |
965 | compat_uptr_t inputdata; | |
966 | unsigned int inputdatalength; | |
967 | compat_uptr_t outputdata; | |
968 | unsigned int outputdatalength; | |
969 | compat_uptr_t b_key; | |
970 | compat_uptr_t n_modulus; | |
971 | }; | |
972 | ||
973 | static long trans_modexpo32(struct file *filp, unsigned int cmd, | |
974 | unsigned long arg) | |
975 | { | |
976 | struct compat_ica_rsa_modexpo __user *umex32 = compat_ptr(arg); | |
977 | struct compat_ica_rsa_modexpo mex32; | |
978 | struct ica_rsa_modexpo mex64; | |
979 | long rc; | |
980 | ||
981 | if (copy_from_user(&mex32, umex32, sizeof(mex32))) | |
982 | return -EFAULT; | |
983 | mex64.inputdata = compat_ptr(mex32.inputdata); | |
984 | mex64.inputdatalength = mex32.inputdatalength; | |
985 | mex64.outputdata = compat_ptr(mex32.outputdata); | |
986 | mex64.outputdatalength = mex32.outputdatalength; | |
987 | mex64.b_key = compat_ptr(mex32.b_key); | |
988 | mex64.n_modulus = compat_ptr(mex32.n_modulus); | |
989 | do { | |
990 | rc = zcrypt_rsa_modexpo(&mex64); | |
991 | } while (rc == -EAGAIN); | |
dabecb29 HD |
992 | /* on failure: retry once again after a requested rescan */ |
993 | if ((rc == -ENODEV) && (zcrypt_process_rescan())) | |
994 | do { | |
995 | rc = zcrypt_rsa_modexpo(&mex64); | |
996 | } while (rc == -EAGAIN); | |
997 | if (rc) | |
998 | return rc; | |
999 | return put_user(mex64.outputdatalength, | |
1000 | &umex32->outputdatalength); | |
2dbc2418 MS |
1001 | } |
1002 | ||
1003 | struct compat_ica_rsa_modexpo_crt { | |
1004 | compat_uptr_t inputdata; | |
1005 | unsigned int inputdatalength; | |
1006 | compat_uptr_t outputdata; | |
1007 | unsigned int outputdatalength; | |
1008 | compat_uptr_t bp_key; | |
1009 | compat_uptr_t bq_key; | |
1010 | compat_uptr_t np_prime; | |
1011 | compat_uptr_t nq_prime; | |
1012 | compat_uptr_t u_mult_inv; | |
1013 | }; | |
1014 | ||
1015 | static long trans_modexpo_crt32(struct file *filp, unsigned int cmd, | |
1016 | unsigned long arg) | |
1017 | { | |
1018 | struct compat_ica_rsa_modexpo_crt __user *ucrt32 = compat_ptr(arg); | |
1019 | struct compat_ica_rsa_modexpo_crt crt32; | |
1020 | struct ica_rsa_modexpo_crt crt64; | |
1021 | long rc; | |
1022 | ||
1023 | if (copy_from_user(&crt32, ucrt32, sizeof(crt32))) | |
1024 | return -EFAULT; | |
1025 | crt64.inputdata = compat_ptr(crt32.inputdata); | |
1026 | crt64.inputdatalength = crt32.inputdatalength; | |
1027 | crt64.outputdata= compat_ptr(crt32.outputdata); | |
1028 | crt64.outputdatalength = crt32.outputdatalength; | |
1029 | crt64.bp_key = compat_ptr(crt32.bp_key); | |
1030 | crt64.bq_key = compat_ptr(crt32.bq_key); | |
1031 | crt64.np_prime = compat_ptr(crt32.np_prime); | |
1032 | crt64.nq_prime = compat_ptr(crt32.nq_prime); | |
1033 | crt64.u_mult_inv = compat_ptr(crt32.u_mult_inv); | |
1034 | do { | |
1035 | rc = zcrypt_rsa_crt(&crt64); | |
1036 | } while (rc == -EAGAIN); | |
dabecb29 HD |
1037 | /* on failure: retry once again after a requested rescan */ |
1038 | if ((rc == -ENODEV) && (zcrypt_process_rescan())) | |
1039 | do { | |
1040 | rc = zcrypt_rsa_crt(&crt64); | |
1041 | } while (rc == -EAGAIN); | |
1042 | if (rc) | |
1043 | return rc; | |
1044 | return put_user(crt64.outputdatalength, | |
1045 | &ucrt32->outputdatalength); | |
2dbc2418 MS |
1046 | } |
1047 | ||
5432114b RW |
1048 | struct compat_ica_xcRB { |
1049 | unsigned short agent_ID; | |
1050 | unsigned int user_defined; | |
1051 | unsigned short request_ID; | |
1052 | unsigned int request_control_blk_length; | |
1053 | unsigned char padding1[16 - sizeof (compat_uptr_t)]; | |
1054 | compat_uptr_t request_control_blk_addr; | |
1055 | unsigned int request_data_length; | |
1056 | char padding2[16 - sizeof (compat_uptr_t)]; | |
1057 | compat_uptr_t request_data_address; | |
1058 | unsigned int reply_control_blk_length; | |
1059 | char padding3[16 - sizeof (compat_uptr_t)]; | |
1060 | compat_uptr_t reply_control_blk_addr; | |
1061 | unsigned int reply_data_length; | |
1062 | char padding4[16 - sizeof (compat_uptr_t)]; | |
1063 | compat_uptr_t reply_data_addr; | |
1064 | unsigned short priority_window; | |
1065 | unsigned int status; | |
1066 | } __attribute__((packed)); | |
1067 | ||
1068 | static long trans_xcRB32(struct file *filp, unsigned int cmd, | |
1069 | unsigned long arg) | |
1070 | { | |
1071 | struct compat_ica_xcRB __user *uxcRB32 = compat_ptr(arg); | |
1072 | struct compat_ica_xcRB xcRB32; | |
1073 | struct ica_xcRB xcRB64; | |
1074 | long rc; | |
1075 | ||
1076 | if (copy_from_user(&xcRB32, uxcRB32, sizeof(xcRB32))) | |
1077 | return -EFAULT; | |
1078 | xcRB64.agent_ID = xcRB32.agent_ID; | |
1079 | xcRB64.user_defined = xcRB32.user_defined; | |
1080 | xcRB64.request_ID = xcRB32.request_ID; | |
1081 | xcRB64.request_control_blk_length = | |
1082 | xcRB32.request_control_blk_length; | |
1083 | xcRB64.request_control_blk_addr = | |
1084 | compat_ptr(xcRB32.request_control_blk_addr); | |
1085 | xcRB64.request_data_length = | |
1086 | xcRB32.request_data_length; | |
1087 | xcRB64.request_data_address = | |
1088 | compat_ptr(xcRB32.request_data_address); | |
1089 | xcRB64.reply_control_blk_length = | |
1090 | xcRB32.reply_control_blk_length; | |
1091 | xcRB64.reply_control_blk_addr = | |
1092 | compat_ptr(xcRB32.reply_control_blk_addr); | |
1093 | xcRB64.reply_data_length = xcRB32.reply_data_length; | |
1094 | xcRB64.reply_data_addr = | |
1095 | compat_ptr(xcRB32.reply_data_addr); | |
1096 | xcRB64.priority_window = xcRB32.priority_window; | |
1097 | xcRB64.status = xcRB32.status; | |
1098 | do { | |
1099 | rc = zcrypt_send_cprb(&xcRB64); | |
1100 | } while (rc == -EAGAIN); | |
dabecb29 HD |
1101 | /* on failure: retry once again after a requested rescan */ |
1102 | if ((rc == -ENODEV) && (zcrypt_process_rescan())) | |
1103 | do { | |
1104 | rc = zcrypt_send_cprb(&xcRB64); | |
1105 | } while (rc == -EAGAIN); | |
5432114b RW |
1106 | xcRB32.reply_control_blk_length = xcRB64.reply_control_blk_length; |
1107 | xcRB32.reply_data_length = xcRB64.reply_data_length; | |
1108 | xcRB32.status = xcRB64.status; | |
1109 | if (copy_to_user(uxcRB32, &xcRB32, sizeof(xcRB32))) | |
1110 | return -EFAULT; | |
1111 | return rc; | |
1112 | } | |
1113 | ||
2b67fc46 | 1114 | static long zcrypt_compat_ioctl(struct file *filp, unsigned int cmd, |
2dbc2418 MS |
1115 | unsigned long arg) |
1116 | { | |
1117 | if (cmd == ICARSAMODEXPO) | |
1118 | return trans_modexpo32(filp, cmd, arg); | |
1119 | if (cmd == ICARSACRT) | |
1120 | return trans_modexpo_crt32(filp, cmd, arg); | |
5432114b RW |
1121 | if (cmd == ZSECSENDCPRB) |
1122 | return trans_xcRB32(filp, cmd, arg); | |
2dbc2418 MS |
1123 | return zcrypt_unlocked_ioctl(filp, cmd, arg); |
1124 | } | |
1125 | #endif | |
1126 | ||
1749a81d | 1127 | /* |
2dbc2418 MS |
1128 | * Misc device file operations. |
1129 | */ | |
d54b1fdb | 1130 | static const struct file_operations zcrypt_fops = { |
2dbc2418 MS |
1131 | .owner = THIS_MODULE, |
1132 | .read = zcrypt_read, | |
1133 | .write = zcrypt_write, | |
1134 | .unlocked_ioctl = zcrypt_unlocked_ioctl, | |
1135 | #ifdef CONFIG_COMPAT | |
1136 | .compat_ioctl = zcrypt_compat_ioctl, | |
1137 | #endif | |
1138 | .open = zcrypt_open, | |
6038f373 AB |
1139 | .release = zcrypt_release, |
1140 | .llseek = no_llseek, | |
2dbc2418 MS |
1141 | }; |
1142 | ||
1749a81d | 1143 | /* |
2dbc2418 MS |
1144 | * Misc device. |
1145 | */ | |
1146 | static struct miscdevice zcrypt_misc_device = { | |
1147 | .minor = MISC_DYNAMIC_MINOR, | |
1148 | .name = "z90crypt", | |
1149 | .fops = &zcrypt_fops, | |
1150 | }; | |
1151 | ||
1749a81d | 1152 | /* |
2dbc2418 MS |
1153 | * Deprecated /proc entry support. |
1154 | */ | |
1155 | static struct proc_dir_entry *zcrypt_entry; | |
1156 | ||
34b9243a | 1157 | static void sprintcl(struct seq_file *m, unsigned char *addr, unsigned int len) |
2dbc2418 | 1158 | { |
34b9243a | 1159 | int i; |
2dbc2418 | 1160 | |
2dbc2418 | 1161 | for (i = 0; i < len; i++) |
34b9243a AD |
1162 | seq_printf(m, "%01x", (unsigned int) addr[i]); |
1163 | seq_putc(m, ' '); | |
2dbc2418 MS |
1164 | } |
1165 | ||
34b9243a | 1166 | static void sprintrw(struct seq_file *m, unsigned char *addr, unsigned int len) |
2dbc2418 | 1167 | { |
34b9243a | 1168 | int inl, c, cx; |
2dbc2418 | 1169 | |
34b9243a | 1170 | seq_printf(m, " "); |
2dbc2418 MS |
1171 | inl = 0; |
1172 | for (c = 0; c < (len / 16); c++) { | |
34b9243a | 1173 | sprintcl(m, addr+inl, 16); |
2dbc2418 MS |
1174 | inl += 16; |
1175 | } | |
1176 | cx = len%16; | |
1177 | if (cx) { | |
34b9243a | 1178 | sprintcl(m, addr+inl, cx); |
2dbc2418 MS |
1179 | inl += cx; |
1180 | } | |
34b9243a | 1181 | seq_putc(m, '\n'); |
2dbc2418 MS |
1182 | } |
1183 | ||
34b9243a AD |
1184 | static void sprinthx(unsigned char *title, struct seq_file *m, |
1185 | unsigned char *addr, unsigned int len) | |
2dbc2418 | 1186 | { |
34b9243a | 1187 | int inl, r, rx; |
2dbc2418 | 1188 | |
34b9243a | 1189 | seq_printf(m, "\n%s\n", title); |
2dbc2418 MS |
1190 | inl = 0; |
1191 | for (r = 0; r < (len / 64); r++) { | |
34b9243a | 1192 | sprintrw(m, addr+inl, 64); |
2dbc2418 MS |
1193 | inl += 64; |
1194 | } | |
1195 | rx = len % 64; | |
1196 | if (rx) { | |
34b9243a | 1197 | sprintrw(m, addr+inl, rx); |
2dbc2418 MS |
1198 | inl += rx; |
1199 | } | |
34b9243a | 1200 | seq_putc(m, '\n'); |
2dbc2418 MS |
1201 | } |
1202 | ||
34b9243a AD |
1203 | static void sprinthx4(unsigned char *title, struct seq_file *m, |
1204 | unsigned int *array, unsigned int len) | |
2dbc2418 | 1205 | { |
34b9243a | 1206 | seq_printf(m, "\n%s\n", title); |
5d2fe875 | 1207 | seq_hex_dump(m, " ", DUMP_PREFIX_NONE, 32, 4, array, len, false); |
34b9243a | 1208 | seq_putc(m, '\n'); |
2dbc2418 MS |
1209 | } |
1210 | ||
34b9243a | 1211 | static int zcrypt_proc_show(struct seq_file *m, void *v) |
2dbc2418 | 1212 | { |
34b9243a AD |
1213 | char workarea[sizeof(int) * AP_DEVICES]; |
1214 | ||
1215 | seq_printf(m, "\nzcrypt version: %d.%d.%d\n", | |
1216 | ZCRYPT_VERSION, ZCRYPT_RELEASE, ZCRYPT_VARIANT); | |
1217 | seq_printf(m, "Cryptographic domain: %d\n", ap_domain_index); | |
1218 | seq_printf(m, "Total device count: %d\n", zcrypt_device_count); | |
1219 | seq_printf(m, "PCICA count: %d\n", zcrypt_count_type(ZCRYPT_PCICA)); | |
1220 | seq_printf(m, "PCICC count: %d\n", zcrypt_count_type(ZCRYPT_PCICC)); | |
1221 | seq_printf(m, "PCIXCC MCL2 count: %d\n", | |
1222 | zcrypt_count_type(ZCRYPT_PCIXCC_MCL2)); | |
1223 | seq_printf(m, "PCIXCC MCL3 count: %d\n", | |
1224 | zcrypt_count_type(ZCRYPT_PCIXCC_MCL3)); | |
1225 | seq_printf(m, "CEX2C count: %d\n", zcrypt_count_type(ZCRYPT_CEX2C)); | |
1226 | seq_printf(m, "CEX2A count: %d\n", zcrypt_count_type(ZCRYPT_CEX2A)); | |
1227 | seq_printf(m, "CEX3C count: %d\n", zcrypt_count_type(ZCRYPT_CEX3C)); | |
1228 | seq_printf(m, "CEX3A count: %d\n", zcrypt_count_type(ZCRYPT_CEX3A)); | |
1229 | seq_printf(m, "requestq count: %d\n", zcrypt_requestq_count()); | |
1230 | seq_printf(m, "pendingq count: %d\n", zcrypt_pendingq_count()); | |
1231 | seq_printf(m, "Total open handles: %d\n\n", | |
1232 | atomic_read(&zcrypt_open_count)); | |
2dbc2418 | 1233 | zcrypt_status_mask(workarea); |
34b9243a AD |
1234 | sprinthx("Online devices: 1=PCICA 2=PCICC 3=PCIXCC(MCL2) " |
1235 | "4=PCIXCC(MCL3) 5=CEX2C 6=CEX2A 7=CEX3C 8=CEX3A", | |
1236 | m, workarea, AP_DEVICES); | |
2dbc2418 | 1237 | zcrypt_qdepth_mask(workarea); |
34b9243a | 1238 | sprinthx("Waiting work element counts", m, workarea, AP_DEVICES); |
2b67fc46 | 1239 | zcrypt_perdev_reqcnt((int *) workarea); |
34b9243a AD |
1240 | sprinthx4("Per-device successfully completed request counts", |
1241 | m, (unsigned int *) workarea, AP_DEVICES); | |
1242 | return 0; | |
1243 | } | |
1244 | ||
1245 | static int zcrypt_proc_open(struct inode *inode, struct file *file) | |
1246 | { | |
1247 | return single_open(file, zcrypt_proc_show, NULL); | |
2dbc2418 MS |
1248 | } |
1249 | ||
1250 | static void zcrypt_disable_card(int index) | |
1251 | { | |
e28d2af4 IT |
1252 | struct zcrypt_card *zc; |
1253 | struct zcrypt_queue *zq; | |
2dbc2418 | 1254 | |
e28d2af4 IT |
1255 | spin_lock(&zcrypt_list_lock); |
1256 | for_each_zcrypt_card(zc) { | |
1257 | for_each_zcrypt_queue(zq, zc) { | |
1258 | if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index) | |
1259 | continue; | |
1260 | zq->online = 0; | |
1261 | ap_flush_queue(zq->queue); | |
2dbc2418 | 1262 | } |
e28d2af4 IT |
1263 | } |
1264 | spin_unlock(&zcrypt_list_lock); | |
2dbc2418 MS |
1265 | } |
1266 | ||
1267 | static void zcrypt_enable_card(int index) | |
1268 | { | |
e28d2af4 IT |
1269 | struct zcrypt_card *zc; |
1270 | struct zcrypt_queue *zq; | |
2dbc2418 | 1271 | |
e28d2af4 IT |
1272 | spin_lock(&zcrypt_list_lock); |
1273 | for_each_zcrypt_card(zc) { | |
1274 | for_each_zcrypt_queue(zq, zc) { | |
1275 | if (AP_QID_QUEUE(zq->queue->qid) != ap_domain_index) | |
1276 | continue; | |
1277 | zq->online = 1; | |
1278 | ap_flush_queue(zq->queue); | |
2dbc2418 | 1279 | } |
e28d2af4 IT |
1280 | } |
1281 | spin_unlock(&zcrypt_list_lock); | |
2dbc2418 MS |
1282 | } |
1283 | ||
34b9243a AD |
1284 | static ssize_t zcrypt_proc_write(struct file *file, const char __user *buffer, |
1285 | size_t count, loff_t *pos) | |
2dbc2418 MS |
1286 | { |
1287 | unsigned char *lbuf, *ptr; | |
34b9243a | 1288 | size_t local_count; |
2dbc2418 MS |
1289 | int j; |
1290 | ||
1291 | if (count <= 0) | |
1292 | return 0; | |
1293 | ||
1294 | #define LBUFSIZE 1200UL | |
1295 | lbuf = kmalloc(LBUFSIZE, GFP_KERNEL); | |
1a89dd8f | 1296 | if (!lbuf) |
2dbc2418 | 1297 | return 0; |
2dbc2418 MS |
1298 | |
1299 | local_count = min(LBUFSIZE - 1, count); | |
1300 | if (copy_from_user(lbuf, buffer, local_count) != 0) { | |
1301 | kfree(lbuf); | |
1302 | return -EFAULT; | |
1303 | } | |
1304 | lbuf[local_count] = '\0'; | |
1305 | ||
1306 | ptr = strstr(lbuf, "Online devices"); | |
1a89dd8f | 1307 | if (!ptr) |
2dbc2418 | 1308 | goto out; |
2dbc2418 | 1309 | ptr = strstr(ptr, "\n"); |
1a89dd8f | 1310 | if (!ptr) |
2dbc2418 | 1311 | goto out; |
2dbc2418 MS |
1312 | ptr++; |
1313 | ||
1a89dd8f | 1314 | if (strstr(ptr, "Waiting work element counts") == NULL) |
2dbc2418 | 1315 | goto out; |
2dbc2418 MS |
1316 | |
1317 | for (j = 0; j < 64 && *ptr; ptr++) { | |
1749a81d | 1318 | /* |
2dbc2418 MS |
1319 | * '0' for no device, '1' for PCICA, '2' for PCICC, |
1320 | * '3' for PCIXCC_MCL2, '4' for PCIXCC_MCL3, | |
1321 | * '5' for CEX2C and '6' for CEX2A' | |
ffda4f71 | 1322 | * '7' for CEX3C and '8' for CEX3A |
2dbc2418 | 1323 | */ |
ffda4f71 | 1324 | if (*ptr >= '0' && *ptr <= '8') |
2dbc2418 MS |
1325 | j++; |
1326 | else if (*ptr == 'd' || *ptr == 'D') | |
1327 | zcrypt_disable_card(j++); | |
1328 | else if (*ptr == 'e' || *ptr == 'E') | |
1329 | zcrypt_enable_card(j++); | |
1330 | else if (*ptr != ' ' && *ptr != '\t') | |
1331 | break; | |
1332 | } | |
1333 | out: | |
1334 | kfree(lbuf); | |
1335 | return count; | |
1336 | } | |
1337 | ||
34b9243a AD |
1338 | static const struct file_operations zcrypt_proc_fops = { |
1339 | .owner = THIS_MODULE, | |
1340 | .open = zcrypt_proc_open, | |
1341 | .read = seq_read, | |
1342 | .llseek = seq_lseek, | |
1343 | .release = single_release, | |
1344 | .write = zcrypt_proc_write, | |
1345 | }; | |
1346 | ||
2f7c8bd6 RW |
1347 | static int zcrypt_rng_device_count; |
1348 | static u32 *zcrypt_rng_buffer; | |
1349 | static int zcrypt_rng_buffer_index; | |
1350 | static DEFINE_MUTEX(zcrypt_rng_mutex); | |
1351 | ||
1352 | static int zcrypt_rng_data_read(struct hwrng *rng, u32 *data) | |
1353 | { | |
1354 | int rc; | |
1355 | ||
1749a81d | 1356 | /* |
2f7c8bd6 RW |
1357 | * We don't need locking here because the RNG API guarantees serialized |
1358 | * read method calls. | |
1359 | */ | |
1360 | if (zcrypt_rng_buffer_index == 0) { | |
1361 | rc = zcrypt_rng((char *) zcrypt_rng_buffer); | |
dabecb29 HD |
1362 | /* on failure: retry once again after a requested rescan */ |
1363 | if ((rc == -ENODEV) && (zcrypt_process_rescan())) | |
1364 | rc = zcrypt_rng((char *) zcrypt_rng_buffer); | |
2f7c8bd6 RW |
1365 | if (rc < 0) |
1366 | return -EIO; | |
1367 | zcrypt_rng_buffer_index = rc / sizeof *data; | |
1368 | } | |
1369 | *data = zcrypt_rng_buffer[--zcrypt_rng_buffer_index]; | |
1370 | return sizeof *data; | |
1371 | } | |
1372 | ||
1373 | static struct hwrng zcrypt_rng_dev = { | |
1374 | .name = "zcrypt", | |
1375 | .data_read = zcrypt_rng_data_read, | |
db490cb9 | 1376 | .quality = 990, |
2f7c8bd6 RW |
1377 | }; |
1378 | ||
e28d2af4 | 1379 | int zcrypt_rng_device_add(void) |
2f7c8bd6 RW |
1380 | { |
1381 | int rc = 0; | |
1382 | ||
1383 | mutex_lock(&zcrypt_rng_mutex); | |
1384 | if (zcrypt_rng_device_count == 0) { | |
1385 | zcrypt_rng_buffer = (u32 *) get_zeroed_page(GFP_KERNEL); | |
1386 | if (!zcrypt_rng_buffer) { | |
1387 | rc = -ENOMEM; | |
1388 | goto out; | |
1389 | } | |
1390 | zcrypt_rng_buffer_index = 0; | |
db490cb9 IT |
1391 | if (!zcrypt_hwrng_seed) |
1392 | zcrypt_rng_dev.quality = 0; | |
2f7c8bd6 RW |
1393 | rc = hwrng_register(&zcrypt_rng_dev); |
1394 | if (rc) | |
1395 | goto out_free; | |
1396 | zcrypt_rng_device_count = 1; | |
1397 | } else | |
1398 | zcrypt_rng_device_count++; | |
1399 | mutex_unlock(&zcrypt_rng_mutex); | |
1400 | return 0; | |
1401 | ||
1402 | out_free: | |
1403 | free_page((unsigned long) zcrypt_rng_buffer); | |
1404 | out: | |
1405 | mutex_unlock(&zcrypt_rng_mutex); | |
1406 | return rc; | |
1407 | } | |
1408 | ||
e28d2af4 | 1409 | void zcrypt_rng_device_remove(void) |
2f7c8bd6 RW |
1410 | { |
1411 | mutex_lock(&zcrypt_rng_mutex); | |
1412 | zcrypt_rng_device_count--; | |
1413 | if (zcrypt_rng_device_count == 0) { | |
1414 | hwrng_unregister(&zcrypt_rng_dev); | |
1415 | free_page((unsigned long) zcrypt_rng_buffer); | |
1416 | } | |
1417 | mutex_unlock(&zcrypt_rng_mutex); | |
1418 | } | |
1419 | ||
dabecb29 HD |
1420 | int __init zcrypt_debug_init(void) |
1421 | { | |
cccd85bf HF |
1422 | zcrypt_dbf_root = debugfs_create_dir("zcrypt", NULL); |
1423 | zcrypt_dbf_info = debug_register("zcrypt", 1, 1, | |
1424 | DBF_MAX_SPRINTF_ARGS * sizeof(long)); | |
1425 | debug_register_view(zcrypt_dbf_info, &debug_sprintf_view); | |
1426 | debug_set_level(zcrypt_dbf_info, DBF_ERR); | |
e28d2af4 | 1427 | |
dabecb29 HD |
1428 | return 0; |
1429 | } | |
1430 | ||
1431 | void zcrypt_debug_exit(void) | |
1432 | { | |
cccd85bf HF |
1433 | debugfs_remove(zcrypt_dbf_root); |
1434 | debug_unregister(zcrypt_dbf_info); | |
dabecb29 HD |
1435 | } |
1436 | ||
2dbc2418 | 1437 | /** |
1749a81d FB |
1438 | * zcrypt_api_init(): Module initialization. |
1439 | * | |
2dbc2418 MS |
1440 | * The module initialization code. |
1441 | */ | |
1442 | int __init zcrypt_api_init(void) | |
1443 | { | |
1444 | int rc; | |
1445 | ||
dabecb29 HD |
1446 | rc = zcrypt_debug_init(); |
1447 | if (rc) | |
1448 | goto out; | |
1449 | ||
1450 | atomic_set(&zcrypt_rescan_req, 0); | |
1451 | ||
2dbc2418 MS |
1452 | /* Register the request sprayer. */ |
1453 | rc = misc_register(&zcrypt_misc_device); | |
1a89dd8f | 1454 | if (rc < 0) |
2dbc2418 | 1455 | goto out; |
2dbc2418 MS |
1456 | |
1457 | /* Set up the proc file system */ | |
e28d2af4 IT |
1458 | zcrypt_entry = proc_create("driver/z90crypt", 0644, NULL, |
1459 | &zcrypt_proc_fops); | |
2dbc2418 | 1460 | if (!zcrypt_entry) { |
2dbc2418 MS |
1461 | rc = -ENOMEM; |
1462 | goto out_misc; | |
1463 | } | |
2dbc2418 | 1464 | |
fc1d3f02 IT |
1465 | zcrypt_msgtype6_init(); |
1466 | zcrypt_msgtype50_init(); | |
2dbc2418 MS |
1467 | return 0; |
1468 | ||
1469 | out_misc: | |
1470 | misc_deregister(&zcrypt_misc_device); | |
1471 | out: | |
1472 | return rc; | |
1473 | } | |
1474 | ||
1475 | /** | |
1749a81d FB |
1476 | * zcrypt_api_exit(): Module termination. |
1477 | * | |
2dbc2418 MS |
1478 | * The module termination code. |
1479 | */ | |
fc1d3f02 | 1480 | void __exit zcrypt_api_exit(void) |
2dbc2418 MS |
1481 | { |
1482 | remove_proc_entry("driver/z90crypt", NULL); | |
1483 | misc_deregister(&zcrypt_misc_device); | |
fc1d3f02 IT |
1484 | zcrypt_msgtype6_exit(); |
1485 | zcrypt_msgtype50_exit(); | |
cccd85bf | 1486 | zcrypt_debug_exit(); |
2dbc2418 MS |
1487 | } |
1488 | ||
2dbc2418 MS |
1489 | module_init(zcrypt_api_init); |
1490 | module_exit(zcrypt_api_exit); |