]>
Commit | Line | Data |
---|---|---|
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> |
2dbc2418 | 39 | #include <asm/uaccess.h> |
2f7c8bd6 | 40 | #include <linux/hw_random.h> |
dabecb29 HD |
41 | #include <linux/debugfs.h> |
42 | #include <asm/debug.h> | |
2dbc2418 | 43 | |
dabecb29 | 44 | #include "zcrypt_debug.h" |
2dbc2418 MS |
45 | #include "zcrypt_api.h" |
46 | ||
91f3e3ea IT |
47 | #include "zcrypt_msgtype6.h" |
48 | ||
1749a81d | 49 | /* |
2dbc2418 MS |
50 | * Module description. |
51 | */ | |
52 | MODULE_AUTHOR("IBM Corporation"); | |
5e55a488 HD |
53 | MODULE_DESCRIPTION("Cryptographic Coprocessor interface, " \ |
54 | "Copyright IBM Corp. 2001, 2012"); | |
2dbc2418 MS |
55 | MODULE_LICENSE("GPL"); |
56 | ||
db490cb9 IT |
57 | static int zcrypt_hwrng_seed = 1; |
58 | module_param_named(hwrng_seed, zcrypt_hwrng_seed, int, S_IRUSR|S_IRGRP); | |
59 | MODULE_PARM_DESC(hwrng_seed, "Turn on/off hwrng auto seed, default is 1 (on)."); | |
60 | ||
2dbc2418 MS |
61 | static DEFINE_SPINLOCK(zcrypt_device_lock); |
62 | static LIST_HEAD(zcrypt_device_list); | |
63 | static int zcrypt_device_count = 0; | |
64 | static atomic_t zcrypt_open_count = ATOMIC_INIT(0); | |
dabecb29 HD |
65 | static atomic_t zcrypt_rescan_count = ATOMIC_INIT(0); |
66 | ||
67 | atomic_t zcrypt_rescan_req = ATOMIC_INIT(0); | |
68 | EXPORT_SYMBOL(zcrypt_rescan_req); | |
2dbc2418 | 69 | |
2f7c8bd6 RW |
70 | static int zcrypt_rng_device_add(void); |
71 | static void zcrypt_rng_device_remove(void); | |
72 | ||
5e55a488 HD |
73 | static DEFINE_SPINLOCK(zcrypt_ops_list_lock); |
74 | static LIST_HEAD(zcrypt_ops_list); | |
75 | ||
dabecb29 HD |
76 | static debug_info_t *zcrypt_dbf_common; |
77 | static debug_info_t *zcrypt_dbf_devices; | |
78 | static struct dentry *debugfs_root; | |
79 | ||
1749a81d | 80 | /* |
2dbc2418 MS |
81 | * Device attributes common for all crypto devices. |
82 | */ | |
83 | static ssize_t zcrypt_type_show(struct device *dev, | |
84 | struct device_attribute *attr, char *buf) | |
85 | { | |
86 | struct zcrypt_device *zdev = to_ap_dev(dev)->private; | |
87 | return snprintf(buf, PAGE_SIZE, "%s\n", zdev->type_string); | |
88 | } | |
89 | ||
90 | static DEVICE_ATTR(type, 0444, zcrypt_type_show, NULL); | |
91 | ||
92 | static ssize_t zcrypt_online_show(struct device *dev, | |
93 | struct device_attribute *attr, char *buf) | |
94 | { | |
95 | struct zcrypt_device *zdev = to_ap_dev(dev)->private; | |
96 | return snprintf(buf, PAGE_SIZE, "%d\n", zdev->online); | |
97 | } | |
98 | ||
99 | static ssize_t zcrypt_online_store(struct device *dev, | |
100 | struct device_attribute *attr, | |
101 | const char *buf, size_t count) | |
102 | { | |
103 | struct zcrypt_device *zdev = to_ap_dev(dev)->private; | |
104 | int online; | |
105 | ||
106 | if (sscanf(buf, "%d\n", &online) != 1 || online < 0 || online > 1) | |
107 | return -EINVAL; | |
108 | zdev->online = online; | |
dabecb29 HD |
109 | ZCRYPT_DBF_DEV(DBF_INFO, zdev, "dev%04xo%dman", zdev->ap_dev->qid, |
110 | zdev->online); | |
2dbc2418 MS |
111 | if (!online) |
112 | ap_flush_queue(zdev->ap_dev); | |
113 | return count; | |
114 | } | |
115 | ||
116 | static DEVICE_ATTR(online, 0644, zcrypt_online_show, zcrypt_online_store); | |
117 | ||
118 | static struct attribute * zcrypt_device_attrs[] = { | |
119 | &dev_attr_type.attr, | |
120 | &dev_attr_online.attr, | |
121 | NULL, | |
122 | }; | |
123 | ||
124 | static struct attribute_group zcrypt_device_attr_group = { | |
125 | .attrs = zcrypt_device_attrs, | |
126 | }; | |
127 | ||
dabecb29 HD |
128 | /** |
129 | * Process a rescan of the transport layer. | |
130 | * | |
131 | * Returns 1, if the rescan has been processed, otherwise 0. | |
132 | */ | |
133 | static inline int zcrypt_process_rescan(void) | |
134 | { | |
135 | if (atomic_read(&zcrypt_rescan_req)) { | |
136 | atomic_set(&zcrypt_rescan_req, 0); | |
137 | atomic_inc(&zcrypt_rescan_count); | |
138 | ap_bus_force_rescan(); | |
139 | ZCRYPT_DBF_COMMON(DBF_INFO, "rescan%07d", | |
140 | atomic_inc_return(&zcrypt_rescan_count)); | |
141 | return 1; | |
142 | } | |
143 | return 0; | |
144 | } | |
145 | ||
2dbc2418 | 146 | /** |
1749a81d FB |
147 | * __zcrypt_increase_preference(): Increase preference of a crypto device. |
148 | * @zdev: Pointer the crypto device | |
149 | * | |
2dbc2418 MS |
150 | * Move the device towards the head of the device list. |
151 | * Need to be called while holding the zcrypt device list lock. | |
152 | * Note: cards with speed_rating of 0 are kept at the end of the list. | |
153 | */ | |
154 | static void __zcrypt_increase_preference(struct zcrypt_device *zdev) | |
155 | { | |
156 | struct zcrypt_device *tmp; | |
157 | struct list_head *l; | |
158 | ||
159 | if (zdev->speed_rating == 0) | |
160 | return; | |
161 | for (l = zdev->list.prev; l != &zcrypt_device_list; l = l->prev) { | |
162 | tmp = list_entry(l, struct zcrypt_device, list); | |
163 | if ((tmp->request_count + 1) * tmp->speed_rating <= | |
164 | (zdev->request_count + 1) * zdev->speed_rating && | |
165 | tmp->speed_rating != 0) | |
166 | break; | |
167 | } | |
168 | if (l == zdev->list.prev) | |
169 | return; | |
170 | /* Move zdev behind l */ | |
1fbc9f46 | 171 | list_move(&zdev->list, l); |
2dbc2418 MS |
172 | } |
173 | ||
174 | /** | |
1749a81d FB |
175 | * __zcrypt_decrease_preference(): Decrease preference of a crypto device. |
176 | * @zdev: Pointer to a crypto device. | |
177 | * | |
2dbc2418 MS |
178 | * Move the device towards the tail of the device list. |
179 | * Need to be called while holding the zcrypt device list lock. | |
180 | * Note: cards with speed_rating of 0 are kept at the end of the list. | |
181 | */ | |
182 | static void __zcrypt_decrease_preference(struct zcrypt_device *zdev) | |
183 | { | |
184 | struct zcrypt_device *tmp; | |
185 | struct list_head *l; | |
186 | ||
187 | if (zdev->speed_rating == 0) | |
188 | return; | |
189 | for (l = zdev->list.next; l != &zcrypt_device_list; l = l->next) { | |
190 | tmp = list_entry(l, struct zcrypt_device, list); | |
191 | if ((tmp->request_count + 1) * tmp->speed_rating > | |
192 | (zdev->request_count + 1) * zdev->speed_rating || | |
193 | tmp->speed_rating == 0) | |
194 | break; | |
195 | } | |
196 | if (l == zdev->list.next) | |
197 | return; | |
198 | /* Move zdev before l */ | |
1fbc9f46 | 199 | list_move_tail(&zdev->list, l); |
2dbc2418 MS |
200 | } |
201 | ||
202 | static void zcrypt_device_release(struct kref *kref) | |
203 | { | |
204 | struct zcrypt_device *zdev = | |
205 | container_of(kref, struct zcrypt_device, refcount); | |
206 | zcrypt_device_free(zdev); | |
207 | } | |
208 | ||
209 | void zcrypt_device_get(struct zcrypt_device *zdev) | |
210 | { | |
211 | kref_get(&zdev->refcount); | |
212 | } | |
213 | EXPORT_SYMBOL(zcrypt_device_get); | |
214 | ||
215 | int zcrypt_device_put(struct zcrypt_device *zdev) | |
216 | { | |
217 | return kref_put(&zdev->refcount, zcrypt_device_release); | |
218 | } | |
219 | EXPORT_SYMBOL(zcrypt_device_put); | |
220 | ||
221 | struct zcrypt_device *zcrypt_device_alloc(size_t max_response_size) | |
222 | { | |
223 | struct zcrypt_device *zdev; | |
224 | ||
225 | zdev = kzalloc(sizeof(struct zcrypt_device), GFP_KERNEL); | |
226 | if (!zdev) | |
227 | return NULL; | |
228 | zdev->reply.message = kmalloc(max_response_size, GFP_KERNEL); | |
229 | if (!zdev->reply.message) | |
230 | goto out_free; | |
231 | zdev->reply.length = max_response_size; | |
232 | spin_lock_init(&zdev->lock); | |
233 | INIT_LIST_HEAD(&zdev->list); | |
dabecb29 | 234 | zdev->dbf_area = zcrypt_dbf_devices; |
2dbc2418 MS |
235 | return zdev; |
236 | ||
237 | out_free: | |
238 | kfree(zdev); | |
239 | return NULL; | |
240 | } | |
241 | EXPORT_SYMBOL(zcrypt_device_alloc); | |
242 | ||
243 | void zcrypt_device_free(struct zcrypt_device *zdev) | |
244 | { | |
245 | kfree(zdev->reply.message); | |
246 | kfree(zdev); | |
247 | } | |
248 | EXPORT_SYMBOL(zcrypt_device_free); | |
249 | ||
250 | /** | |
1749a81d FB |
251 | * zcrypt_device_register() - Register a crypto device. |
252 | * @zdev: Pointer to a crypto device | |
253 | * | |
254 | * Register a crypto device. Returns 0 if successful. | |
2dbc2418 MS |
255 | */ |
256 | int zcrypt_device_register(struct zcrypt_device *zdev) | |
257 | { | |
258 | int rc; | |
259 | ||
5e55a488 HD |
260 | if (!zdev->ops) |
261 | return -ENODEV; | |
2dbc2418 MS |
262 | rc = sysfs_create_group(&zdev->ap_dev->device.kobj, |
263 | &zcrypt_device_attr_group); | |
264 | if (rc) | |
265 | goto out; | |
266 | get_device(&zdev->ap_dev->device); | |
267 | kref_init(&zdev->refcount); | |
268 | spin_lock_bh(&zcrypt_device_lock); | |
269 | zdev->online = 1; /* New devices are online by default. */ | |
dabecb29 HD |
270 | ZCRYPT_DBF_DEV(DBF_INFO, zdev, "dev%04xo%dreg", zdev->ap_dev->qid, |
271 | zdev->online); | |
2dbc2418 MS |
272 | list_add_tail(&zdev->list, &zcrypt_device_list); |
273 | __zcrypt_increase_preference(zdev); | |
274 | zcrypt_device_count++; | |
275 | spin_unlock_bh(&zcrypt_device_lock); | |
2f7c8bd6 RW |
276 | if (zdev->ops->rng) { |
277 | rc = zcrypt_rng_device_add(); | |
278 | if (rc) | |
279 | goto out_unregister; | |
280 | } | |
281 | return 0; | |
282 | ||
283 | out_unregister: | |
284 | spin_lock_bh(&zcrypt_device_lock); | |
285 | zcrypt_device_count--; | |
286 | list_del_init(&zdev->list); | |
287 | spin_unlock_bh(&zcrypt_device_lock); | |
288 | sysfs_remove_group(&zdev->ap_dev->device.kobj, | |
289 | &zcrypt_device_attr_group); | |
290 | put_device(&zdev->ap_dev->device); | |
291 | zcrypt_device_put(zdev); | |
2dbc2418 MS |
292 | out: |
293 | return rc; | |
294 | } | |
295 | EXPORT_SYMBOL(zcrypt_device_register); | |
296 | ||
297 | /** | |
1749a81d FB |
298 | * zcrypt_device_unregister(): Unregister a crypto device. |
299 | * @zdev: Pointer to crypto device | |
300 | * | |
2dbc2418 MS |
301 | * Unregister a crypto device. |
302 | */ | |
303 | void zcrypt_device_unregister(struct zcrypt_device *zdev) | |
304 | { | |
2f7c8bd6 RW |
305 | if (zdev->ops->rng) |
306 | zcrypt_rng_device_remove(); | |
2dbc2418 MS |
307 | spin_lock_bh(&zcrypt_device_lock); |
308 | zcrypt_device_count--; | |
309 | list_del_init(&zdev->list); | |
310 | spin_unlock_bh(&zcrypt_device_lock); | |
311 | sysfs_remove_group(&zdev->ap_dev->device.kobj, | |
312 | &zcrypt_device_attr_group); | |
313 | put_device(&zdev->ap_dev->device); | |
314 | zcrypt_device_put(zdev); | |
315 | } | |
316 | EXPORT_SYMBOL(zcrypt_device_unregister); | |
317 | ||
5e55a488 HD |
318 | void zcrypt_msgtype_register(struct zcrypt_ops *zops) |
319 | { | |
320 | if (zops->owner) { | |
321 | spin_lock_bh(&zcrypt_ops_list_lock); | |
322 | list_add_tail(&zops->list, &zcrypt_ops_list); | |
323 | spin_unlock_bh(&zcrypt_ops_list_lock); | |
324 | } | |
325 | } | |
326 | EXPORT_SYMBOL(zcrypt_msgtype_register); | |
327 | ||
328 | void zcrypt_msgtype_unregister(struct zcrypt_ops *zops) | |
329 | { | |
330 | spin_lock_bh(&zcrypt_ops_list_lock); | |
331 | list_del_init(&zops->list); | |
332 | spin_unlock_bh(&zcrypt_ops_list_lock); | |
333 | } | |
334 | EXPORT_SYMBOL(zcrypt_msgtype_unregister); | |
335 | ||
336 | static inline | |
337 | struct zcrypt_ops *__ops_lookup(unsigned char *name, int variant) | |
338 | { | |
339 | struct zcrypt_ops *zops; | |
340 | int found = 0; | |
341 | ||
342 | spin_lock_bh(&zcrypt_ops_list_lock); | |
343 | list_for_each_entry(zops, &zcrypt_ops_list, list) { | |
344 | if ((zops->variant == variant) && | |
345 | (!strncmp(zops->owner->name, name, MODULE_NAME_LEN))) { | |
346 | found = 1; | |
347 | break; | |
348 | } | |
349 | } | |
46b05c7b IT |
350 | if (!found || !try_module_get(zops->owner)) |
351 | zops = NULL; | |
352 | ||
5e55a488 HD |
353 | spin_unlock_bh(&zcrypt_ops_list_lock); |
354 | ||
5e55a488 HD |
355 | return zops; |
356 | } | |
357 | ||
358 | struct zcrypt_ops *zcrypt_msgtype_request(unsigned char *name, int variant) | |
359 | { | |
360 | struct zcrypt_ops *zops = NULL; | |
361 | ||
362 | zops = __ops_lookup(name, variant); | |
363 | if (!zops) { | |
ef283688 | 364 | request_module("%s", name); |
5e55a488 HD |
365 | zops = __ops_lookup(name, variant); |
366 | } | |
5e55a488 HD |
367 | return zops; |
368 | } | |
369 | EXPORT_SYMBOL(zcrypt_msgtype_request); | |
370 | ||
371 | void zcrypt_msgtype_release(struct zcrypt_ops *zops) | |
372 | { | |
373 | if (zops) | |
374 | module_put(zops->owner); | |
375 | } | |
376 | EXPORT_SYMBOL(zcrypt_msgtype_release); | |
377 | ||
2dbc2418 | 378 | /** |
1749a81d FB |
379 | * zcrypt_read (): Not supported beyond zcrypt 1.3.1. |
380 | * | |
381 | * This function is not supported beyond zcrypt 1.3.1. | |
2dbc2418 MS |
382 | */ |
383 | static ssize_t zcrypt_read(struct file *filp, char __user *buf, | |
384 | size_t count, loff_t *f_pos) | |
385 | { | |
386 | return -EPERM; | |
387 | } | |
388 | ||
389 | /** | |
1749a81d FB |
390 | * zcrypt_write(): Not allowed. |
391 | * | |
2dbc2418 MS |
392 | * Write is is not allowed |
393 | */ | |
394 | static ssize_t zcrypt_write(struct file *filp, const char __user *buf, | |
395 | size_t count, loff_t *f_pos) | |
396 | { | |
397 | return -EPERM; | |
398 | } | |
399 | ||
400 | /** | |
1749a81d FB |
401 | * zcrypt_open(): Count number of users. |
402 | * | |
403 | * Device open function to count number of users. | |
2dbc2418 MS |
404 | */ |
405 | static int zcrypt_open(struct inode *inode, struct file *filp) | |
406 | { | |
407 | atomic_inc(&zcrypt_open_count); | |
58ea91c0 | 408 | return nonseekable_open(inode, filp); |
2dbc2418 MS |
409 | } |
410 | ||
1749a81d FB |
411 | /** |
412 | * zcrypt_release(): Count number of users. | |
413 | * | |
414 | * Device close function to count number of users. | |
415 | */ | |
2dbc2418 MS |
416 | static int zcrypt_release(struct inode *inode, struct file *filp) |
417 | { | |
418 | atomic_dec(&zcrypt_open_count); | |
419 | return 0; | |
420 | } | |
421 | ||
1749a81d | 422 | /* |
2dbc2418 MS |
423 | * zcrypt ioctls. |
424 | */ | |
425 | static long zcrypt_rsa_modexpo(struct ica_rsa_modexpo *mex) | |
426 | { | |
427 | struct zcrypt_device *zdev; | |
428 | int rc; | |
429 | ||
430 | if (mex->outputdatalength < mex->inputdatalength) | |
431 | return -EINVAL; | |
1749a81d | 432 | /* |
2dbc2418 MS |
433 | * As long as outputdatalength is big enough, we can set the |
434 | * outputdatalength equal to the inputdatalength, since that is the | |
435 | * number of bytes we will copy in any case | |
436 | */ | |
437 | mex->outputdatalength = mex->inputdatalength; | |
438 | ||
439 | spin_lock_bh(&zcrypt_device_lock); | |
440 | list_for_each_entry(zdev, &zcrypt_device_list, list) { | |
441 | if (!zdev->online || | |
442 | !zdev->ops->rsa_modexpo || | |
443 | zdev->min_mod_size > mex->inputdatalength || | |
444 | zdev->max_mod_size < mex->inputdatalength) | |
445 | continue; | |
446 | zcrypt_device_get(zdev); | |
447 | get_device(&zdev->ap_dev->device); | |
448 | zdev->request_count++; | |
449 | __zcrypt_decrease_preference(zdev); | |
2dbc2418 | 450 | if (try_module_get(zdev->ap_dev->drv->driver.owner)) { |
43a867a2 | 451 | spin_unlock_bh(&zcrypt_device_lock); |
2dbc2418 | 452 | rc = zdev->ops->rsa_modexpo(zdev, mex); |
43a867a2 | 453 | spin_lock_bh(&zcrypt_device_lock); |
2dbc2418 MS |
454 | module_put(zdev->ap_dev->drv->driver.owner); |
455 | } | |
456 | else | |
457 | rc = -EAGAIN; | |
2dbc2418 MS |
458 | zdev->request_count--; |
459 | __zcrypt_increase_preference(zdev); | |
460 | put_device(&zdev->ap_dev->device); | |
461 | zcrypt_device_put(zdev); | |
462 | spin_unlock_bh(&zcrypt_device_lock); | |
463 | return rc; | |
464 | } | |
465 | spin_unlock_bh(&zcrypt_device_lock); | |
466 | return -ENODEV; | |
467 | } | |
468 | ||
469 | static long zcrypt_rsa_crt(struct ica_rsa_modexpo_crt *crt) | |
470 | { | |
471 | struct zcrypt_device *zdev; | |
472 | unsigned long long z1, z2, z3; | |
473 | int rc, copied; | |
474 | ||
475 | if (crt->outputdatalength < crt->inputdatalength || | |
476 | (crt->inputdatalength & 1)) | |
477 | return -EINVAL; | |
1749a81d | 478 | /* |
2dbc2418 MS |
479 | * As long as outputdatalength is big enough, we can set the |
480 | * outputdatalength equal to the inputdatalength, since that is the | |
481 | * number of bytes we will copy in any case | |
482 | */ | |
483 | crt->outputdatalength = crt->inputdatalength; | |
484 | ||
485 | copied = 0; | |
486 | restart: | |
487 | spin_lock_bh(&zcrypt_device_lock); | |
488 | list_for_each_entry(zdev, &zcrypt_device_list, list) { | |
489 | if (!zdev->online || | |
490 | !zdev->ops->rsa_modexpo_crt || | |
491 | zdev->min_mod_size > crt->inputdatalength || | |
492 | zdev->max_mod_size < crt->inputdatalength) | |
493 | continue; | |
494 | if (zdev->short_crt && crt->inputdatalength > 240) { | |
1749a81d | 495 | /* |
2dbc2418 MS |
496 | * Check inputdata for leading zeros for cards |
497 | * that can't handle np_prime, bp_key, or | |
498 | * u_mult_inv > 128 bytes. | |
499 | */ | |
500 | if (copied == 0) { | |
0648f565 | 501 | unsigned int len; |
2dbc2418 | 502 | spin_unlock_bh(&zcrypt_device_lock); |
078f8eca FB |
503 | /* len is max 256 / 2 - 120 = 8 |
504 | * For bigger device just assume len of leading | |
505 | * 0s is 8 as stated in the requirements for | |
506 | * ica_rsa_modexpo_crt struct in zcrypt.h. | |
507 | */ | |
508 | if (crt->inputdatalength <= 256) | |
509 | len = crt->inputdatalength / 2 - 120; | |
510 | else | |
511 | len = 8; | |
0648f565 HC |
512 | if (len > sizeof(z1)) |
513 | return -EFAULT; | |
2dbc2418 MS |
514 | z1 = z2 = z3 = 0; |
515 | if (copy_from_user(&z1, crt->np_prime, len) || | |
516 | copy_from_user(&z2, crt->bp_key, len) || | |
517 | copy_from_user(&z3, crt->u_mult_inv, len)) | |
518 | return -EFAULT; | |
078f8eca | 519 | z1 = z2 = z3 = 0; |
2dbc2418 | 520 | copied = 1; |
1749a81d | 521 | /* |
2dbc2418 MS |
522 | * We have to restart device lookup - |
523 | * the device list may have changed by now. | |
524 | */ | |
525 | goto restart; | |
526 | } | |
527 | if (z1 != 0ULL || z2 != 0ULL || z3 != 0ULL) | |
528 | /* The device can't handle this request. */ | |
529 | continue; | |
530 | } | |
531 | zcrypt_device_get(zdev); | |
532 | get_device(&zdev->ap_dev->device); | |
533 | zdev->request_count++; | |
534 | __zcrypt_decrease_preference(zdev); | |
2dbc2418 | 535 | if (try_module_get(zdev->ap_dev->drv->driver.owner)) { |
43a867a2 | 536 | spin_unlock_bh(&zcrypt_device_lock); |
2dbc2418 | 537 | rc = zdev->ops->rsa_modexpo_crt(zdev, crt); |
43a867a2 | 538 | spin_lock_bh(&zcrypt_device_lock); |
2dbc2418 MS |
539 | module_put(zdev->ap_dev->drv->driver.owner); |
540 | } | |
541 | else | |
542 | rc = -EAGAIN; | |
2dbc2418 MS |
543 | zdev->request_count--; |
544 | __zcrypt_increase_preference(zdev); | |
545 | put_device(&zdev->ap_dev->device); | |
546 | zcrypt_device_put(zdev); | |
547 | spin_unlock_bh(&zcrypt_device_lock); | |
548 | return rc; | |
549 | } | |
550 | spin_unlock_bh(&zcrypt_device_lock); | |
551 | return -ENODEV; | |
552 | } | |
553 | ||
5432114b RW |
554 | static long zcrypt_send_cprb(struct ica_xcRB *xcRB) |
555 | { | |
556 | struct zcrypt_device *zdev; | |
557 | int rc; | |
558 | ||
559 | spin_lock_bh(&zcrypt_device_lock); | |
560 | list_for_each_entry(zdev, &zcrypt_device_list, list) { | |
561 | if (!zdev->online || !zdev->ops->send_cprb || | |
91f3e3ea IT |
562 | (zdev->ops->variant == MSGTYPE06_VARIANT_EP11) || |
563 | (xcRB->user_defined != AUTOSELECT && | |
564 | AP_QID_DEVICE(zdev->ap_dev->qid) != xcRB->user_defined)) | |
5432114b RW |
565 | continue; |
566 | zcrypt_device_get(zdev); | |
567 | get_device(&zdev->ap_dev->device); | |
568 | zdev->request_count++; | |
569 | __zcrypt_decrease_preference(zdev); | |
5432114b | 570 | if (try_module_get(zdev->ap_dev->drv->driver.owner)) { |
43a867a2 | 571 | spin_unlock_bh(&zcrypt_device_lock); |
5432114b | 572 | rc = zdev->ops->send_cprb(zdev, xcRB); |
43a867a2 | 573 | spin_lock_bh(&zcrypt_device_lock); |
5432114b RW |
574 | module_put(zdev->ap_dev->drv->driver.owner); |
575 | } | |
576 | else | |
577 | rc = -EAGAIN; | |
5432114b RW |
578 | zdev->request_count--; |
579 | __zcrypt_increase_preference(zdev); | |
580 | put_device(&zdev->ap_dev->device); | |
581 | zcrypt_device_put(zdev); | |
582 | spin_unlock_bh(&zcrypt_device_lock); | |
583 | return rc; | |
584 | } | |
585 | spin_unlock_bh(&zcrypt_device_lock); | |
586 | return -ENODEV; | |
587 | } | |
588 | ||
91f3e3ea IT |
589 | struct ep11_target_dev_list { |
590 | unsigned short targets_num; | |
591 | struct ep11_target_dev *targets; | |
592 | }; | |
593 | ||
594 | static bool is_desired_ep11dev(unsigned int dev_qid, | |
595 | struct ep11_target_dev_list dev_list) | |
596 | { | |
597 | int n; | |
598 | ||
599 | for (n = 0; n < dev_list.targets_num; n++, dev_list.targets++) { | |
600 | if ((AP_QID_DEVICE(dev_qid) == dev_list.targets->ap_id) && | |
601 | (AP_QID_QUEUE(dev_qid) == dev_list.targets->dom_id)) { | |
602 | return true; | |
603 | } | |
604 | } | |
605 | return false; | |
606 | } | |
607 | ||
608 | static long zcrypt_send_ep11_cprb(struct ep11_urb *xcrb) | |
609 | { | |
610 | struct zcrypt_device *zdev; | |
611 | bool autoselect = false; | |
612 | int rc; | |
613 | struct ep11_target_dev_list ep11_dev_list = { | |
614 | .targets_num = 0x00, | |
615 | .targets = NULL, | |
616 | }; | |
617 | ||
618 | ep11_dev_list.targets_num = (unsigned short) xcrb->targets_num; | |
619 | ||
620 | /* empty list indicates autoselect (all available targets) */ | |
621 | if (ep11_dev_list.targets_num == 0) | |
622 | autoselect = true; | |
623 | else { | |
624 | ep11_dev_list.targets = kcalloc((unsigned short) | |
625 | xcrb->targets_num, | |
626 | sizeof(struct ep11_target_dev), | |
627 | GFP_KERNEL); | |
628 | if (!ep11_dev_list.targets) | |
629 | return -ENOMEM; | |
630 | ||
631 | if (copy_from_user(ep11_dev_list.targets, | |
ce1ce2f3 IT |
632 | (struct ep11_target_dev __force __user *) |
633 | xcrb->targets, xcrb->targets_num * | |
91f3e3ea IT |
634 | sizeof(struct ep11_target_dev))) |
635 | return -EFAULT; | |
636 | } | |
637 | ||
638 | spin_lock_bh(&zcrypt_device_lock); | |
639 | list_for_each_entry(zdev, &zcrypt_device_list, list) { | |
640 | /* check if device is eligible */ | |
641 | if (!zdev->online || | |
642 | zdev->ops->variant != MSGTYPE06_VARIANT_EP11) | |
643 | continue; | |
644 | ||
645 | /* check if device is selected as valid target */ | |
646 | if (!is_desired_ep11dev(zdev->ap_dev->qid, ep11_dev_list) && | |
647 | !autoselect) | |
648 | continue; | |
649 | ||
650 | zcrypt_device_get(zdev); | |
651 | get_device(&zdev->ap_dev->device); | |
652 | zdev->request_count++; | |
653 | __zcrypt_decrease_preference(zdev); | |
654 | if (try_module_get(zdev->ap_dev->drv->driver.owner)) { | |
655 | spin_unlock_bh(&zcrypt_device_lock); | |
656 | rc = zdev->ops->send_ep11_cprb(zdev, xcrb); | |
657 | spin_lock_bh(&zcrypt_device_lock); | |
658 | module_put(zdev->ap_dev->drv->driver.owner); | |
659 | } else { | |
660 | rc = -EAGAIN; | |
661 | } | |
662 | zdev->request_count--; | |
663 | __zcrypt_increase_preference(zdev); | |
664 | put_device(&zdev->ap_dev->device); | |
665 | zcrypt_device_put(zdev); | |
666 | spin_unlock_bh(&zcrypt_device_lock); | |
667 | return rc; | |
668 | } | |
669 | spin_unlock_bh(&zcrypt_device_lock); | |
670 | return -ENODEV; | |
671 | } | |
672 | ||
2f7c8bd6 RW |
673 | static long zcrypt_rng(char *buffer) |
674 | { | |
675 | struct zcrypt_device *zdev; | |
676 | int rc; | |
677 | ||
678 | spin_lock_bh(&zcrypt_device_lock); | |
679 | list_for_each_entry(zdev, &zcrypt_device_list, list) { | |
680 | if (!zdev->online || !zdev->ops->rng) | |
681 | continue; | |
682 | zcrypt_device_get(zdev); | |
683 | get_device(&zdev->ap_dev->device); | |
684 | zdev->request_count++; | |
685 | __zcrypt_decrease_preference(zdev); | |
686 | if (try_module_get(zdev->ap_dev->drv->driver.owner)) { | |
687 | spin_unlock_bh(&zcrypt_device_lock); | |
688 | rc = zdev->ops->rng(zdev, buffer); | |
689 | spin_lock_bh(&zcrypt_device_lock); | |
690 | module_put(zdev->ap_dev->drv->driver.owner); | |
691 | } else | |
692 | rc = -EAGAIN; | |
693 | zdev->request_count--; | |
694 | __zcrypt_increase_preference(zdev); | |
695 | put_device(&zdev->ap_dev->device); | |
696 | zcrypt_device_put(zdev); | |
697 | spin_unlock_bh(&zcrypt_device_lock); | |
698 | return rc; | |
699 | } | |
700 | spin_unlock_bh(&zcrypt_device_lock); | |
701 | return -ENODEV; | |
702 | } | |
703 | ||
2dbc2418 MS |
704 | static void zcrypt_status_mask(char status[AP_DEVICES]) |
705 | { | |
706 | struct zcrypt_device *zdev; | |
707 | ||
708 | memset(status, 0, sizeof(char) * AP_DEVICES); | |
709 | spin_lock_bh(&zcrypt_device_lock); | |
710 | list_for_each_entry(zdev, &zcrypt_device_list, list) | |
711 | status[AP_QID_DEVICE(zdev->ap_dev->qid)] = | |
712 | zdev->online ? zdev->user_space_type : 0x0d; | |
713 | spin_unlock_bh(&zcrypt_device_lock); | |
714 | } | |
715 | ||
716 | static void zcrypt_qdepth_mask(char qdepth[AP_DEVICES]) | |
717 | { | |
718 | struct zcrypt_device *zdev; | |
719 | ||
720 | memset(qdepth, 0, sizeof(char) * AP_DEVICES); | |
721 | spin_lock_bh(&zcrypt_device_lock); | |
722 | list_for_each_entry(zdev, &zcrypt_device_list, list) { | |
723 | spin_lock(&zdev->ap_dev->lock); | |
724 | qdepth[AP_QID_DEVICE(zdev->ap_dev->qid)] = | |
725 | zdev->ap_dev->pendingq_count + | |
726 | zdev->ap_dev->requestq_count; | |
727 | spin_unlock(&zdev->ap_dev->lock); | |
728 | } | |
729 | spin_unlock_bh(&zcrypt_device_lock); | |
730 | } | |
731 | ||
732 | static void zcrypt_perdev_reqcnt(int reqcnt[AP_DEVICES]) | |
733 | { | |
734 | struct zcrypt_device *zdev; | |
735 | ||
736 | memset(reqcnt, 0, sizeof(int) * AP_DEVICES); | |
737 | spin_lock_bh(&zcrypt_device_lock); | |
738 | list_for_each_entry(zdev, &zcrypt_device_list, list) { | |
739 | spin_lock(&zdev->ap_dev->lock); | |
740 | reqcnt[AP_QID_DEVICE(zdev->ap_dev->qid)] = | |
741 | zdev->ap_dev->total_request_count; | |
742 | spin_unlock(&zdev->ap_dev->lock); | |
743 | } | |
744 | spin_unlock_bh(&zcrypt_device_lock); | |
745 | } | |
746 | ||
747 | static int zcrypt_pendingq_count(void) | |
748 | { | |
749 | struct zcrypt_device *zdev; | |
750 | int pendingq_count = 0; | |
751 | ||
752 | spin_lock_bh(&zcrypt_device_lock); | |
753 | list_for_each_entry(zdev, &zcrypt_device_list, list) { | |
754 | spin_lock(&zdev->ap_dev->lock); | |
755 | pendingq_count += zdev->ap_dev->pendingq_count; | |
756 | spin_unlock(&zdev->ap_dev->lock); | |
757 | } | |
758 | spin_unlock_bh(&zcrypt_device_lock); | |
759 | return pendingq_count; | |
760 | } | |
761 | ||
762 | static int zcrypt_requestq_count(void) | |
763 | { | |
764 | struct zcrypt_device *zdev; | |
765 | int requestq_count = 0; | |
766 | ||
767 | spin_lock_bh(&zcrypt_device_lock); | |
768 | list_for_each_entry(zdev, &zcrypt_device_list, list) { | |
769 | spin_lock(&zdev->ap_dev->lock); | |
770 | requestq_count += zdev->ap_dev->requestq_count; | |
771 | spin_unlock(&zdev->ap_dev->lock); | |
772 | } | |
773 | spin_unlock_bh(&zcrypt_device_lock); | |
774 | return requestq_count; | |
775 | } | |
776 | ||
777 | static int zcrypt_count_type(int type) | |
778 | { | |
779 | struct zcrypt_device *zdev; | |
780 | int device_count = 0; | |
781 | ||
782 | spin_lock_bh(&zcrypt_device_lock); | |
783 | list_for_each_entry(zdev, &zcrypt_device_list, list) | |
784 | if (zdev->user_space_type == type) | |
785 | device_count++; | |
786 | spin_unlock_bh(&zcrypt_device_lock); | |
787 | return device_count; | |
788 | } | |
789 | ||
790 | /** | |
1749a81d FB |
791 | * zcrypt_ica_status(): Old, depracted combi status call. |
792 | * | |
2dbc2418 MS |
793 | * Old, deprecated combi status call. |
794 | */ | |
795 | static long zcrypt_ica_status(struct file *filp, unsigned long arg) | |
796 | { | |
797 | struct ica_z90_status *pstat; | |
798 | int ret; | |
799 | ||
800 | pstat = kzalloc(sizeof(*pstat), GFP_KERNEL); | |
801 | if (!pstat) | |
802 | return -ENOMEM; | |
803 | pstat->totalcount = zcrypt_device_count; | |
804 | pstat->leedslitecount = zcrypt_count_type(ZCRYPT_PCICA); | |
805 | pstat->leeds2count = zcrypt_count_type(ZCRYPT_PCICC); | |
806 | pstat->requestqWaitCount = zcrypt_requestq_count(); | |
807 | pstat->pendingqWaitCount = zcrypt_pendingq_count(); | |
808 | pstat->totalOpenCount = atomic_read(&zcrypt_open_count); | |
809 | pstat->cryptoDomain = ap_domain_index; | |
810 | zcrypt_status_mask(pstat->status); | |
811 | zcrypt_qdepth_mask(pstat->qdepth); | |
812 | ret = 0; | |
813 | if (copy_to_user((void __user *) arg, pstat, sizeof(*pstat))) | |
814 | ret = -EFAULT; | |
815 | kfree(pstat); | |
816 | return ret; | |
817 | } | |
818 | ||
819 | static long zcrypt_unlocked_ioctl(struct file *filp, unsigned int cmd, | |
820 | unsigned long arg) | |
821 | { | |
822 | int rc; | |
823 | ||
824 | switch (cmd) { | |
825 | case ICARSAMODEXPO: { | |
826 | struct ica_rsa_modexpo __user *umex = (void __user *) arg; | |
827 | struct ica_rsa_modexpo mex; | |
828 | if (copy_from_user(&mex, umex, sizeof(mex))) | |
829 | return -EFAULT; | |
830 | do { | |
831 | rc = zcrypt_rsa_modexpo(&mex); | |
832 | } while (rc == -EAGAIN); | |
dabecb29 HD |
833 | /* on failure: retry once again after a requested rescan */ |
834 | if ((rc == -ENODEV) && (zcrypt_process_rescan())) | |
835 | do { | |
836 | rc = zcrypt_rsa_modexpo(&mex); | |
837 | } while (rc == -EAGAIN); | |
2dbc2418 MS |
838 | if (rc) |
839 | return rc; | |
840 | return put_user(mex.outputdatalength, &umex->outputdatalength); | |
841 | } | |
842 | case ICARSACRT: { | |
843 | struct ica_rsa_modexpo_crt __user *ucrt = (void __user *) arg; | |
844 | struct ica_rsa_modexpo_crt crt; | |
845 | if (copy_from_user(&crt, ucrt, sizeof(crt))) | |
846 | return -EFAULT; | |
847 | do { | |
848 | rc = zcrypt_rsa_crt(&crt); | |
849 | } while (rc == -EAGAIN); | |
dabecb29 HD |
850 | /* on failure: retry once again after a requested rescan */ |
851 | if ((rc == -ENODEV) && (zcrypt_process_rescan())) | |
852 | do { | |
853 | rc = zcrypt_rsa_crt(&crt); | |
854 | } while (rc == -EAGAIN); | |
2dbc2418 MS |
855 | if (rc) |
856 | return rc; | |
857 | return put_user(crt.outputdatalength, &ucrt->outputdatalength); | |
858 | } | |
5432114b RW |
859 | case ZSECSENDCPRB: { |
860 | struct ica_xcRB __user *uxcRB = (void __user *) arg; | |
861 | struct ica_xcRB xcRB; | |
862 | if (copy_from_user(&xcRB, uxcRB, sizeof(xcRB))) | |
863 | return -EFAULT; | |
864 | do { | |
865 | rc = zcrypt_send_cprb(&xcRB); | |
866 | } while (rc == -EAGAIN); | |
dabecb29 HD |
867 | /* on failure: retry once again after a requested rescan */ |
868 | if ((rc == -ENODEV) && (zcrypt_process_rescan())) | |
869 | do { | |
870 | rc = zcrypt_send_cprb(&xcRB); | |
871 | } while (rc == -EAGAIN); | |
5432114b RW |
872 | if (copy_to_user(uxcRB, &xcRB, sizeof(xcRB))) |
873 | return -EFAULT; | |
874 | return rc; | |
875 | } | |
91f3e3ea IT |
876 | case ZSENDEP11CPRB: { |
877 | struct ep11_urb __user *uxcrb = (void __user *)arg; | |
878 | struct ep11_urb xcrb; | |
879 | if (copy_from_user(&xcrb, uxcrb, sizeof(xcrb))) | |
880 | return -EFAULT; | |
881 | do { | |
882 | rc = zcrypt_send_ep11_cprb(&xcrb); | |
883 | } while (rc == -EAGAIN); | |
884 | /* on failure: retry once again after a requested rescan */ | |
885 | if ((rc == -ENODEV) && (zcrypt_process_rescan())) | |
886 | do { | |
887 | rc = zcrypt_send_ep11_cprb(&xcrb); | |
888 | } while (rc == -EAGAIN); | |
889 | if (copy_to_user(uxcrb, &xcrb, sizeof(xcrb))) | |
890 | return -EFAULT; | |
891 | return rc; | |
892 | } | |
2dbc2418 MS |
893 | case Z90STAT_STATUS_MASK: { |
894 | char status[AP_DEVICES]; | |
895 | zcrypt_status_mask(status); | |
896 | if (copy_to_user((char __user *) arg, status, | |
897 | sizeof(char) * AP_DEVICES)) | |
898 | return -EFAULT; | |
899 | return 0; | |
900 | } | |
901 | case Z90STAT_QDEPTH_MASK: { | |
902 | char qdepth[AP_DEVICES]; | |
903 | zcrypt_qdepth_mask(qdepth); | |
904 | if (copy_to_user((char __user *) arg, qdepth, | |
905 | sizeof(char) * AP_DEVICES)) | |
906 | return -EFAULT; | |
907 | return 0; | |
908 | } | |
909 | case Z90STAT_PERDEV_REQCNT: { | |
910 | int reqcnt[AP_DEVICES]; | |
911 | zcrypt_perdev_reqcnt(reqcnt); | |
912 | if (copy_to_user((int __user *) arg, reqcnt, | |
913 | sizeof(int) * AP_DEVICES)) | |
914 | return -EFAULT; | |
915 | return 0; | |
916 | } | |
917 | case Z90STAT_REQUESTQ_COUNT: | |
918 | return put_user(zcrypt_requestq_count(), (int __user *) arg); | |
919 | case Z90STAT_PENDINGQ_COUNT: | |
920 | return put_user(zcrypt_pendingq_count(), (int __user *) arg); | |
921 | case Z90STAT_TOTALOPEN_COUNT: | |
922 | return put_user(atomic_read(&zcrypt_open_count), | |
923 | (int __user *) arg); | |
924 | case Z90STAT_DOMAIN_INDEX: | |
925 | return put_user(ap_domain_index, (int __user *) arg); | |
1749a81d | 926 | /* |
2dbc2418 MS |
927 | * Deprecated ioctls. Don't add another device count ioctl, |
928 | * you can count them yourself in the user space with the | |
929 | * output of the Z90STAT_STATUS_MASK ioctl. | |
930 | */ | |
931 | case ICAZ90STATUS: | |
932 | return zcrypt_ica_status(filp, arg); | |
933 | case Z90STAT_TOTALCOUNT: | |
934 | return put_user(zcrypt_device_count, (int __user *) arg); | |
935 | case Z90STAT_PCICACOUNT: | |
936 | return put_user(zcrypt_count_type(ZCRYPT_PCICA), | |
937 | (int __user *) arg); | |
938 | case Z90STAT_PCICCCOUNT: | |
939 | return put_user(zcrypt_count_type(ZCRYPT_PCICC), | |
940 | (int __user *) arg); | |
941 | case Z90STAT_PCIXCCMCL2COUNT: | |
942 | return put_user(zcrypt_count_type(ZCRYPT_PCIXCC_MCL2), | |
943 | (int __user *) arg); | |
944 | case Z90STAT_PCIXCCMCL3COUNT: | |
945 | return put_user(zcrypt_count_type(ZCRYPT_PCIXCC_MCL3), | |
946 | (int __user *) arg); | |
947 | case Z90STAT_PCIXCCCOUNT: | |
948 | return put_user(zcrypt_count_type(ZCRYPT_PCIXCC_MCL2) + | |
949 | zcrypt_count_type(ZCRYPT_PCIXCC_MCL3), | |
950 | (int __user *) arg); | |
951 | case Z90STAT_CEX2CCOUNT: | |
952 | return put_user(zcrypt_count_type(ZCRYPT_CEX2C), | |
953 | (int __user *) arg); | |
954 | case Z90STAT_CEX2ACOUNT: | |
955 | return put_user(zcrypt_count_type(ZCRYPT_CEX2A), | |
956 | (int __user *) arg); | |
957 | default: | |
958 | /* unknown ioctl number */ | |
959 | return -ENOIOCTLCMD; | |
960 | } | |
961 | } | |
962 | ||
963 | #ifdef CONFIG_COMPAT | |
1749a81d | 964 | /* |
2dbc2418 MS |
965 | * ioctl32 conversion routines |
966 | */ | |
967 | struct compat_ica_rsa_modexpo { | |
968 | compat_uptr_t inputdata; | |
969 | unsigned int inputdatalength; | |
970 | compat_uptr_t outputdata; | |
971 | unsigned int outputdatalength; | |
972 | compat_uptr_t b_key; | |
973 | compat_uptr_t n_modulus; | |
974 | }; | |
975 | ||
976 | static long trans_modexpo32(struct file *filp, unsigned int cmd, | |
977 | unsigned long arg) | |
978 | { | |
979 | struct compat_ica_rsa_modexpo __user *umex32 = compat_ptr(arg); | |
980 | struct compat_ica_rsa_modexpo mex32; | |
981 | struct ica_rsa_modexpo mex64; | |
982 | long rc; | |
983 | ||
984 | if (copy_from_user(&mex32, umex32, sizeof(mex32))) | |
985 | return -EFAULT; | |
986 | mex64.inputdata = compat_ptr(mex32.inputdata); | |
987 | mex64.inputdatalength = mex32.inputdatalength; | |
988 | mex64.outputdata = compat_ptr(mex32.outputdata); | |
989 | mex64.outputdatalength = mex32.outputdatalength; | |
990 | mex64.b_key = compat_ptr(mex32.b_key); | |
991 | mex64.n_modulus = compat_ptr(mex32.n_modulus); | |
992 | do { | |
993 | rc = zcrypt_rsa_modexpo(&mex64); | |
994 | } while (rc == -EAGAIN); | |
dabecb29 HD |
995 | /* on failure: retry once again after a requested rescan */ |
996 | if ((rc == -ENODEV) && (zcrypt_process_rescan())) | |
997 | do { | |
998 | rc = zcrypt_rsa_modexpo(&mex64); | |
999 | } while (rc == -EAGAIN); | |
1000 | if (rc) | |
1001 | return rc; | |
1002 | return put_user(mex64.outputdatalength, | |
1003 | &umex32->outputdatalength); | |
2dbc2418 MS |
1004 | } |
1005 | ||
1006 | struct compat_ica_rsa_modexpo_crt { | |
1007 | compat_uptr_t inputdata; | |
1008 | unsigned int inputdatalength; | |
1009 | compat_uptr_t outputdata; | |
1010 | unsigned int outputdatalength; | |
1011 | compat_uptr_t bp_key; | |
1012 | compat_uptr_t bq_key; | |
1013 | compat_uptr_t np_prime; | |
1014 | compat_uptr_t nq_prime; | |
1015 | compat_uptr_t u_mult_inv; | |
1016 | }; | |
1017 | ||
1018 | static long trans_modexpo_crt32(struct file *filp, unsigned int cmd, | |
1019 | unsigned long arg) | |
1020 | { | |
1021 | struct compat_ica_rsa_modexpo_crt __user *ucrt32 = compat_ptr(arg); | |
1022 | struct compat_ica_rsa_modexpo_crt crt32; | |
1023 | struct ica_rsa_modexpo_crt crt64; | |
1024 | long rc; | |
1025 | ||
1026 | if (copy_from_user(&crt32, ucrt32, sizeof(crt32))) | |
1027 | return -EFAULT; | |
1028 | crt64.inputdata = compat_ptr(crt32.inputdata); | |
1029 | crt64.inputdatalength = crt32.inputdatalength; | |
1030 | crt64.outputdata= compat_ptr(crt32.outputdata); | |
1031 | crt64.outputdatalength = crt32.outputdatalength; | |
1032 | crt64.bp_key = compat_ptr(crt32.bp_key); | |
1033 | crt64.bq_key = compat_ptr(crt32.bq_key); | |
1034 | crt64.np_prime = compat_ptr(crt32.np_prime); | |
1035 | crt64.nq_prime = compat_ptr(crt32.nq_prime); | |
1036 | crt64.u_mult_inv = compat_ptr(crt32.u_mult_inv); | |
1037 | do { | |
1038 | rc = zcrypt_rsa_crt(&crt64); | |
1039 | } while (rc == -EAGAIN); | |
dabecb29 HD |
1040 | /* on failure: retry once again after a requested rescan */ |
1041 | if ((rc == -ENODEV) && (zcrypt_process_rescan())) | |
1042 | do { | |
1043 | rc = zcrypt_rsa_crt(&crt64); | |
1044 | } while (rc == -EAGAIN); | |
1045 | if (rc) | |
1046 | return rc; | |
1047 | return put_user(crt64.outputdatalength, | |
1048 | &ucrt32->outputdatalength); | |
2dbc2418 MS |
1049 | } |
1050 | ||
5432114b RW |
1051 | struct compat_ica_xcRB { |
1052 | unsigned short agent_ID; | |
1053 | unsigned int user_defined; | |
1054 | unsigned short request_ID; | |
1055 | unsigned int request_control_blk_length; | |
1056 | unsigned char padding1[16 - sizeof (compat_uptr_t)]; | |
1057 | compat_uptr_t request_control_blk_addr; | |
1058 | unsigned int request_data_length; | |
1059 | char padding2[16 - sizeof (compat_uptr_t)]; | |
1060 | compat_uptr_t request_data_address; | |
1061 | unsigned int reply_control_blk_length; | |
1062 | char padding3[16 - sizeof (compat_uptr_t)]; | |
1063 | compat_uptr_t reply_control_blk_addr; | |
1064 | unsigned int reply_data_length; | |
1065 | char padding4[16 - sizeof (compat_uptr_t)]; | |
1066 | compat_uptr_t reply_data_addr; | |
1067 | unsigned short priority_window; | |
1068 | unsigned int status; | |
1069 | } __attribute__((packed)); | |
1070 | ||
1071 | static long trans_xcRB32(struct file *filp, unsigned int cmd, | |
1072 | unsigned long arg) | |
1073 | { | |
1074 | struct compat_ica_xcRB __user *uxcRB32 = compat_ptr(arg); | |
1075 | struct compat_ica_xcRB xcRB32; | |
1076 | struct ica_xcRB xcRB64; | |
1077 | long rc; | |
1078 | ||
1079 | if (copy_from_user(&xcRB32, uxcRB32, sizeof(xcRB32))) | |
1080 | return -EFAULT; | |
1081 | xcRB64.agent_ID = xcRB32.agent_ID; | |
1082 | xcRB64.user_defined = xcRB32.user_defined; | |
1083 | xcRB64.request_ID = xcRB32.request_ID; | |
1084 | xcRB64.request_control_blk_length = | |
1085 | xcRB32.request_control_blk_length; | |
1086 | xcRB64.request_control_blk_addr = | |
1087 | compat_ptr(xcRB32.request_control_blk_addr); | |
1088 | xcRB64.request_data_length = | |
1089 | xcRB32.request_data_length; | |
1090 | xcRB64.request_data_address = | |
1091 | compat_ptr(xcRB32.request_data_address); | |
1092 | xcRB64.reply_control_blk_length = | |
1093 | xcRB32.reply_control_blk_length; | |
1094 | xcRB64.reply_control_blk_addr = | |
1095 | compat_ptr(xcRB32.reply_control_blk_addr); | |
1096 | xcRB64.reply_data_length = xcRB32.reply_data_length; | |
1097 | xcRB64.reply_data_addr = | |
1098 | compat_ptr(xcRB32.reply_data_addr); | |
1099 | xcRB64.priority_window = xcRB32.priority_window; | |
1100 | xcRB64.status = xcRB32.status; | |
1101 | do { | |
1102 | rc = zcrypt_send_cprb(&xcRB64); | |
1103 | } while (rc == -EAGAIN); | |
dabecb29 HD |
1104 | /* on failure: retry once again after a requested rescan */ |
1105 | if ((rc == -ENODEV) && (zcrypt_process_rescan())) | |
1106 | do { | |
1107 | rc = zcrypt_send_cprb(&xcRB64); | |
1108 | } while (rc == -EAGAIN); | |
5432114b RW |
1109 | xcRB32.reply_control_blk_length = xcRB64.reply_control_blk_length; |
1110 | xcRB32.reply_data_length = xcRB64.reply_data_length; | |
1111 | xcRB32.status = xcRB64.status; | |
1112 | if (copy_to_user(uxcRB32, &xcRB32, sizeof(xcRB32))) | |
1113 | return -EFAULT; | |
1114 | return rc; | |
1115 | } | |
1116 | ||
2b67fc46 | 1117 | static long zcrypt_compat_ioctl(struct file *filp, unsigned int cmd, |
2dbc2418 MS |
1118 | unsigned long arg) |
1119 | { | |
1120 | if (cmd == ICARSAMODEXPO) | |
1121 | return trans_modexpo32(filp, cmd, arg); | |
1122 | if (cmd == ICARSACRT) | |
1123 | return trans_modexpo_crt32(filp, cmd, arg); | |
5432114b RW |
1124 | if (cmd == ZSECSENDCPRB) |
1125 | return trans_xcRB32(filp, cmd, arg); | |
2dbc2418 MS |
1126 | return zcrypt_unlocked_ioctl(filp, cmd, arg); |
1127 | } | |
1128 | #endif | |
1129 | ||
1749a81d | 1130 | /* |
2dbc2418 MS |
1131 | * Misc device file operations. |
1132 | */ | |
d54b1fdb | 1133 | static const struct file_operations zcrypt_fops = { |
2dbc2418 MS |
1134 | .owner = THIS_MODULE, |
1135 | .read = zcrypt_read, | |
1136 | .write = zcrypt_write, | |
1137 | .unlocked_ioctl = zcrypt_unlocked_ioctl, | |
1138 | #ifdef CONFIG_COMPAT | |
1139 | .compat_ioctl = zcrypt_compat_ioctl, | |
1140 | #endif | |
1141 | .open = zcrypt_open, | |
6038f373 AB |
1142 | .release = zcrypt_release, |
1143 | .llseek = no_llseek, | |
2dbc2418 MS |
1144 | }; |
1145 | ||
1749a81d | 1146 | /* |
2dbc2418 MS |
1147 | * Misc device. |
1148 | */ | |
1149 | static struct miscdevice zcrypt_misc_device = { | |
1150 | .minor = MISC_DYNAMIC_MINOR, | |
1151 | .name = "z90crypt", | |
1152 | .fops = &zcrypt_fops, | |
1153 | }; | |
1154 | ||
1749a81d | 1155 | /* |
2dbc2418 MS |
1156 | * Deprecated /proc entry support. |
1157 | */ | |
1158 | static struct proc_dir_entry *zcrypt_entry; | |
1159 | ||
34b9243a | 1160 | static void sprintcl(struct seq_file *m, unsigned char *addr, unsigned int len) |
2dbc2418 | 1161 | { |
34b9243a | 1162 | int i; |
2dbc2418 | 1163 | |
2dbc2418 | 1164 | for (i = 0; i < len; i++) |
34b9243a AD |
1165 | seq_printf(m, "%01x", (unsigned int) addr[i]); |
1166 | seq_putc(m, ' '); | |
2dbc2418 MS |
1167 | } |
1168 | ||
34b9243a | 1169 | static void sprintrw(struct seq_file *m, unsigned char *addr, unsigned int len) |
2dbc2418 | 1170 | { |
34b9243a | 1171 | int inl, c, cx; |
2dbc2418 | 1172 | |
34b9243a | 1173 | seq_printf(m, " "); |
2dbc2418 MS |
1174 | inl = 0; |
1175 | for (c = 0; c < (len / 16); c++) { | |
34b9243a | 1176 | sprintcl(m, addr+inl, 16); |
2dbc2418 MS |
1177 | inl += 16; |
1178 | } | |
1179 | cx = len%16; | |
1180 | if (cx) { | |
34b9243a | 1181 | sprintcl(m, addr+inl, cx); |
2dbc2418 MS |
1182 | inl += cx; |
1183 | } | |
34b9243a | 1184 | seq_putc(m, '\n'); |
2dbc2418 MS |
1185 | } |
1186 | ||
34b9243a AD |
1187 | static void sprinthx(unsigned char *title, struct seq_file *m, |
1188 | unsigned char *addr, unsigned int len) | |
2dbc2418 | 1189 | { |
34b9243a | 1190 | int inl, r, rx; |
2dbc2418 | 1191 | |
34b9243a | 1192 | seq_printf(m, "\n%s\n", title); |
2dbc2418 MS |
1193 | inl = 0; |
1194 | for (r = 0; r < (len / 64); r++) { | |
34b9243a | 1195 | sprintrw(m, addr+inl, 64); |
2dbc2418 MS |
1196 | inl += 64; |
1197 | } | |
1198 | rx = len % 64; | |
1199 | if (rx) { | |
34b9243a | 1200 | sprintrw(m, addr+inl, rx); |
2dbc2418 MS |
1201 | inl += rx; |
1202 | } | |
34b9243a | 1203 | seq_putc(m, '\n'); |
2dbc2418 MS |
1204 | } |
1205 | ||
34b9243a AD |
1206 | static void sprinthx4(unsigned char *title, struct seq_file *m, |
1207 | unsigned int *array, unsigned int len) | |
2dbc2418 | 1208 | { |
34b9243a | 1209 | int r; |
2dbc2418 | 1210 | |
34b9243a | 1211 | seq_printf(m, "\n%s\n", title); |
2dbc2418 MS |
1212 | for (r = 0; r < len; r++) { |
1213 | if ((r % 8) == 0) | |
34b9243a AD |
1214 | seq_printf(m, " "); |
1215 | seq_printf(m, "%08X ", array[r]); | |
2dbc2418 | 1216 | if ((r % 8) == 7) |
34b9243a | 1217 | seq_putc(m, '\n'); |
2dbc2418 | 1218 | } |
34b9243a | 1219 | seq_putc(m, '\n'); |
2dbc2418 MS |
1220 | } |
1221 | ||
34b9243a | 1222 | static int zcrypt_proc_show(struct seq_file *m, void *v) |
2dbc2418 | 1223 | { |
34b9243a AD |
1224 | char workarea[sizeof(int) * AP_DEVICES]; |
1225 | ||
1226 | seq_printf(m, "\nzcrypt version: %d.%d.%d\n", | |
1227 | ZCRYPT_VERSION, ZCRYPT_RELEASE, ZCRYPT_VARIANT); | |
1228 | seq_printf(m, "Cryptographic domain: %d\n", ap_domain_index); | |
1229 | seq_printf(m, "Total device count: %d\n", zcrypt_device_count); | |
1230 | seq_printf(m, "PCICA count: %d\n", zcrypt_count_type(ZCRYPT_PCICA)); | |
1231 | seq_printf(m, "PCICC count: %d\n", zcrypt_count_type(ZCRYPT_PCICC)); | |
1232 | seq_printf(m, "PCIXCC MCL2 count: %d\n", | |
1233 | zcrypt_count_type(ZCRYPT_PCIXCC_MCL2)); | |
1234 | seq_printf(m, "PCIXCC MCL3 count: %d\n", | |
1235 | zcrypt_count_type(ZCRYPT_PCIXCC_MCL3)); | |
1236 | seq_printf(m, "CEX2C count: %d\n", zcrypt_count_type(ZCRYPT_CEX2C)); | |
1237 | seq_printf(m, "CEX2A count: %d\n", zcrypt_count_type(ZCRYPT_CEX2A)); | |
1238 | seq_printf(m, "CEX3C count: %d\n", zcrypt_count_type(ZCRYPT_CEX3C)); | |
1239 | seq_printf(m, "CEX3A count: %d\n", zcrypt_count_type(ZCRYPT_CEX3A)); | |
1240 | seq_printf(m, "requestq count: %d\n", zcrypt_requestq_count()); | |
1241 | seq_printf(m, "pendingq count: %d\n", zcrypt_pendingq_count()); | |
1242 | seq_printf(m, "Total open handles: %d\n\n", | |
1243 | atomic_read(&zcrypt_open_count)); | |
2dbc2418 | 1244 | zcrypt_status_mask(workarea); |
34b9243a AD |
1245 | sprinthx("Online devices: 1=PCICA 2=PCICC 3=PCIXCC(MCL2) " |
1246 | "4=PCIXCC(MCL3) 5=CEX2C 6=CEX2A 7=CEX3C 8=CEX3A", | |
1247 | m, workarea, AP_DEVICES); | |
2dbc2418 | 1248 | zcrypt_qdepth_mask(workarea); |
34b9243a | 1249 | sprinthx("Waiting work element counts", m, workarea, AP_DEVICES); |
2b67fc46 | 1250 | zcrypt_perdev_reqcnt((int *) workarea); |
34b9243a AD |
1251 | sprinthx4("Per-device successfully completed request counts", |
1252 | m, (unsigned int *) workarea, AP_DEVICES); | |
1253 | return 0; | |
1254 | } | |
1255 | ||
1256 | static int zcrypt_proc_open(struct inode *inode, struct file *file) | |
1257 | { | |
1258 | return single_open(file, zcrypt_proc_show, NULL); | |
2dbc2418 MS |
1259 | } |
1260 | ||
1261 | static void zcrypt_disable_card(int index) | |
1262 | { | |
1263 | struct zcrypt_device *zdev; | |
1264 | ||
1265 | spin_lock_bh(&zcrypt_device_lock); | |
1266 | list_for_each_entry(zdev, &zcrypt_device_list, list) | |
1267 | if (AP_QID_DEVICE(zdev->ap_dev->qid) == index) { | |
1268 | zdev->online = 0; | |
1269 | ap_flush_queue(zdev->ap_dev); | |
1270 | break; | |
1271 | } | |
1272 | spin_unlock_bh(&zcrypt_device_lock); | |
1273 | } | |
1274 | ||
1275 | static void zcrypt_enable_card(int index) | |
1276 | { | |
1277 | struct zcrypt_device *zdev; | |
1278 | ||
1279 | spin_lock_bh(&zcrypt_device_lock); | |
1280 | list_for_each_entry(zdev, &zcrypt_device_list, list) | |
1281 | if (AP_QID_DEVICE(zdev->ap_dev->qid) == index) { | |
1282 | zdev->online = 1; | |
1283 | break; | |
1284 | } | |
1285 | spin_unlock_bh(&zcrypt_device_lock); | |
1286 | } | |
1287 | ||
34b9243a AD |
1288 | static ssize_t zcrypt_proc_write(struct file *file, const char __user *buffer, |
1289 | size_t count, loff_t *pos) | |
2dbc2418 MS |
1290 | { |
1291 | unsigned char *lbuf, *ptr; | |
34b9243a | 1292 | size_t local_count; |
2dbc2418 MS |
1293 | int j; |
1294 | ||
1295 | if (count <= 0) | |
1296 | return 0; | |
1297 | ||
1298 | #define LBUFSIZE 1200UL | |
1299 | lbuf = kmalloc(LBUFSIZE, GFP_KERNEL); | |
1a89dd8f | 1300 | if (!lbuf) |
2dbc2418 | 1301 | return 0; |
2dbc2418 MS |
1302 | |
1303 | local_count = min(LBUFSIZE - 1, count); | |
1304 | if (copy_from_user(lbuf, buffer, local_count) != 0) { | |
1305 | kfree(lbuf); | |
1306 | return -EFAULT; | |
1307 | } | |
1308 | lbuf[local_count] = '\0'; | |
1309 | ||
1310 | ptr = strstr(lbuf, "Online devices"); | |
1a89dd8f | 1311 | if (!ptr) |
2dbc2418 | 1312 | goto out; |
2dbc2418 | 1313 | ptr = strstr(ptr, "\n"); |
1a89dd8f | 1314 | if (!ptr) |
2dbc2418 | 1315 | goto out; |
2dbc2418 MS |
1316 | ptr++; |
1317 | ||
1a89dd8f | 1318 | if (strstr(ptr, "Waiting work element counts") == NULL) |
2dbc2418 | 1319 | goto out; |
2dbc2418 MS |
1320 | |
1321 | for (j = 0; j < 64 && *ptr; ptr++) { | |
1749a81d | 1322 | /* |
2dbc2418 MS |
1323 | * '0' for no device, '1' for PCICA, '2' for PCICC, |
1324 | * '3' for PCIXCC_MCL2, '4' for PCIXCC_MCL3, | |
1325 | * '5' for CEX2C and '6' for CEX2A' | |
ffda4f71 | 1326 | * '7' for CEX3C and '8' for CEX3A |
2dbc2418 | 1327 | */ |
ffda4f71 | 1328 | if (*ptr >= '0' && *ptr <= '8') |
2dbc2418 MS |
1329 | j++; |
1330 | else if (*ptr == 'd' || *ptr == 'D') | |
1331 | zcrypt_disable_card(j++); | |
1332 | else if (*ptr == 'e' || *ptr == 'E') | |
1333 | zcrypt_enable_card(j++); | |
1334 | else if (*ptr != ' ' && *ptr != '\t') | |
1335 | break; | |
1336 | } | |
1337 | out: | |
1338 | kfree(lbuf); | |
1339 | return count; | |
1340 | } | |
1341 | ||
34b9243a AD |
1342 | static const struct file_operations zcrypt_proc_fops = { |
1343 | .owner = THIS_MODULE, | |
1344 | .open = zcrypt_proc_open, | |
1345 | .read = seq_read, | |
1346 | .llseek = seq_lseek, | |
1347 | .release = single_release, | |
1348 | .write = zcrypt_proc_write, | |
1349 | }; | |
1350 | ||
2f7c8bd6 RW |
1351 | static int zcrypt_rng_device_count; |
1352 | static u32 *zcrypt_rng_buffer; | |
1353 | static int zcrypt_rng_buffer_index; | |
1354 | static DEFINE_MUTEX(zcrypt_rng_mutex); | |
1355 | ||
1356 | static int zcrypt_rng_data_read(struct hwrng *rng, u32 *data) | |
1357 | { | |
1358 | int rc; | |
1359 | ||
1749a81d | 1360 | /* |
2f7c8bd6 RW |
1361 | * We don't need locking here because the RNG API guarantees serialized |
1362 | * read method calls. | |
1363 | */ | |
1364 | if (zcrypt_rng_buffer_index == 0) { | |
1365 | rc = zcrypt_rng((char *) zcrypt_rng_buffer); | |
dabecb29 HD |
1366 | /* on failure: retry once again after a requested rescan */ |
1367 | if ((rc == -ENODEV) && (zcrypt_process_rescan())) | |
1368 | rc = zcrypt_rng((char *) zcrypt_rng_buffer); | |
2f7c8bd6 RW |
1369 | if (rc < 0) |
1370 | return -EIO; | |
1371 | zcrypt_rng_buffer_index = rc / sizeof *data; | |
1372 | } | |
1373 | *data = zcrypt_rng_buffer[--zcrypt_rng_buffer_index]; | |
1374 | return sizeof *data; | |
1375 | } | |
1376 | ||
1377 | static struct hwrng zcrypt_rng_dev = { | |
1378 | .name = "zcrypt", | |
1379 | .data_read = zcrypt_rng_data_read, | |
db490cb9 | 1380 | .quality = 990, |
2f7c8bd6 RW |
1381 | }; |
1382 | ||
1383 | static int zcrypt_rng_device_add(void) | |
1384 | { | |
1385 | int rc = 0; | |
1386 | ||
1387 | mutex_lock(&zcrypt_rng_mutex); | |
1388 | if (zcrypt_rng_device_count == 0) { | |
1389 | zcrypt_rng_buffer = (u32 *) get_zeroed_page(GFP_KERNEL); | |
1390 | if (!zcrypt_rng_buffer) { | |
1391 | rc = -ENOMEM; | |
1392 | goto out; | |
1393 | } | |
1394 | zcrypt_rng_buffer_index = 0; | |
db490cb9 IT |
1395 | if (!zcrypt_hwrng_seed) |
1396 | zcrypt_rng_dev.quality = 0; | |
2f7c8bd6 RW |
1397 | rc = hwrng_register(&zcrypt_rng_dev); |
1398 | if (rc) | |
1399 | goto out_free; | |
1400 | zcrypt_rng_device_count = 1; | |
1401 | } else | |
1402 | zcrypt_rng_device_count++; | |
1403 | mutex_unlock(&zcrypt_rng_mutex); | |
1404 | return 0; | |
1405 | ||
1406 | out_free: | |
1407 | free_page((unsigned long) zcrypt_rng_buffer); | |
1408 | out: | |
1409 | mutex_unlock(&zcrypt_rng_mutex); | |
1410 | return rc; | |
1411 | } | |
1412 | ||
1413 | static void zcrypt_rng_device_remove(void) | |
1414 | { | |
1415 | mutex_lock(&zcrypt_rng_mutex); | |
1416 | zcrypt_rng_device_count--; | |
1417 | if (zcrypt_rng_device_count == 0) { | |
1418 | hwrng_unregister(&zcrypt_rng_dev); | |
1419 | free_page((unsigned long) zcrypt_rng_buffer); | |
1420 | } | |
1421 | mutex_unlock(&zcrypt_rng_mutex); | |
1422 | } | |
1423 | ||
dabecb29 HD |
1424 | int __init zcrypt_debug_init(void) |
1425 | { | |
1426 | debugfs_root = debugfs_create_dir("zcrypt", NULL); | |
1427 | ||
1428 | zcrypt_dbf_common = debug_register("zcrypt_common", 1, 1, 16); | |
1429 | debug_register_view(zcrypt_dbf_common, &debug_hex_ascii_view); | |
1430 | debug_set_level(zcrypt_dbf_common, DBF_ERR); | |
1431 | ||
1432 | zcrypt_dbf_devices = debug_register("zcrypt_devices", 1, 1, 16); | |
1433 | debug_register_view(zcrypt_dbf_devices, &debug_hex_ascii_view); | |
1434 | debug_set_level(zcrypt_dbf_devices, DBF_ERR); | |
1435 | ||
1436 | return 0; | |
1437 | } | |
1438 | ||
1439 | void zcrypt_debug_exit(void) | |
1440 | { | |
1441 | debugfs_remove(debugfs_root); | |
1442 | if (zcrypt_dbf_common) | |
1443 | debug_unregister(zcrypt_dbf_common); | |
1444 | if (zcrypt_dbf_devices) | |
1445 | debug_unregister(zcrypt_dbf_devices); | |
1446 | } | |
1447 | ||
2dbc2418 | 1448 | /** |
1749a81d FB |
1449 | * zcrypt_api_init(): Module initialization. |
1450 | * | |
2dbc2418 MS |
1451 | * The module initialization code. |
1452 | */ | |
1453 | int __init zcrypt_api_init(void) | |
1454 | { | |
1455 | int rc; | |
1456 | ||
dabecb29 HD |
1457 | rc = zcrypt_debug_init(); |
1458 | if (rc) | |
1459 | goto out; | |
1460 | ||
1461 | atomic_set(&zcrypt_rescan_req, 0); | |
1462 | ||
2dbc2418 MS |
1463 | /* Register the request sprayer. */ |
1464 | rc = misc_register(&zcrypt_misc_device); | |
1a89dd8f | 1465 | if (rc < 0) |
2dbc2418 | 1466 | goto out; |
2dbc2418 MS |
1467 | |
1468 | /* Set up the proc file system */ | |
34b9243a | 1469 | zcrypt_entry = proc_create("driver/z90crypt", 0644, NULL, &zcrypt_proc_fops); |
2dbc2418 | 1470 | if (!zcrypt_entry) { |
2dbc2418 MS |
1471 | rc = -ENOMEM; |
1472 | goto out_misc; | |
1473 | } | |
2dbc2418 MS |
1474 | |
1475 | return 0; | |
1476 | ||
1477 | out_misc: | |
1478 | misc_deregister(&zcrypt_misc_device); | |
1479 | out: | |
1480 | return rc; | |
1481 | } | |
1482 | ||
1483 | /** | |
1749a81d FB |
1484 | * zcrypt_api_exit(): Module termination. |
1485 | * | |
2dbc2418 MS |
1486 | * The module termination code. |
1487 | */ | |
1488 | void zcrypt_api_exit(void) | |
1489 | { | |
1490 | remove_proc_entry("driver/z90crypt", NULL); | |
1491 | misc_deregister(&zcrypt_misc_device); | |
dabecb29 | 1492 | zcrypt_debug_exit(); |
2dbc2418 MS |
1493 | } |
1494 | ||
2dbc2418 MS |
1495 | module_init(zcrypt_api_init); |
1496 | module_exit(zcrypt_api_exit); |