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Revert "tty: hvc: Fix data abort due to race in hvc_open"
[linux/fpc-iii.git] / drivers / s390 / crypto / zcrypt_cex4.c
blobcdaa8348ad0412226998f2a721c1afd6871cad11
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright IBM Corp. 2012, 2019
4 * Author(s): Holger Dengler <hd@linux.vnet.ibm.com>
5 */
6
7 #include <linux/module.h>
8 #include <linux/slab.h>
9 #include <linux/init.h>
10 #include <linux/err.h>
11 #include <linux/atomic.h>
12 #include <linux/uaccess.h>
13 #include <linux/mod_devicetable.h>
14
15 #include "ap_bus.h"
16 #include "zcrypt_api.h"
17 #include "zcrypt_msgtype6.h"
18 #include "zcrypt_msgtype50.h"
19 #include "zcrypt_error.h"
20 #include "zcrypt_cex4.h"
21 #include "zcrypt_ccamisc.h"
22 #include "zcrypt_ep11misc.h"
23
24 #define CEX4A_MIN_MOD_SIZE 1 /* 8 bits */
25 #define CEX4A_MAX_MOD_SIZE_2K 256 /* 2048 bits */
26 #define CEX4A_MAX_MOD_SIZE_4K 512 /* 4096 bits */
27
28 #define CEX4C_MIN_MOD_SIZE 16 /* 256 bits */
29 #define CEX4C_MAX_MOD_SIZE 512 /* 4096 bits */
30
31 #define CEX4A_MAX_MESSAGE_SIZE MSGTYPE50_CRB3_MAX_MSG_SIZE
32 #define CEX4C_MAX_MESSAGE_SIZE MSGTYPE06_MAX_MSG_SIZE
33
34 /* Waiting time for requests to be processed.
35 * Currently there are some types of request which are not deterministic.
36 * But the maximum time limit managed by the stomper code is set to 60sec.
37 * Hence we have to wait at least that time period.
38 */
39 #define CEX4_CLEANUP_TIME (900*HZ)
40
41 MODULE_AUTHOR("IBM Corporation");
42 MODULE_DESCRIPTION("CEX4/CEX5/CEX6/CEX7 Cryptographic Card device driver, " \
43 "Copyright IBM Corp. 2019");
44 MODULE_LICENSE("GPL");
45
46 static struct ap_device_id zcrypt_cex4_card_ids[] = {
47 { .dev_type = AP_DEVICE_TYPE_CEX4,
48 .match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
49 { .dev_type = AP_DEVICE_TYPE_CEX5,
50 .match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
51 { .dev_type = AP_DEVICE_TYPE_CEX6,
52 .match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
53 { .dev_type = AP_DEVICE_TYPE_CEX7,
54 .match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
55 { /* end of list */ },
56 };
57
58 MODULE_DEVICE_TABLE(ap, zcrypt_cex4_card_ids);
59
60 static struct ap_device_id zcrypt_cex4_queue_ids[] = {
61 { .dev_type = AP_DEVICE_TYPE_CEX4,
62 .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
63 { .dev_type = AP_DEVICE_TYPE_CEX5,
64 .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
65 { .dev_type = AP_DEVICE_TYPE_CEX6,
66 .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
67 { .dev_type = AP_DEVICE_TYPE_CEX7,
68 .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
69 { /* end of list */ },
70 };
71
72 MODULE_DEVICE_TABLE(ap, zcrypt_cex4_queue_ids);
73
74 /*
75 * CCA card additional device attributes
76 */
77 static ssize_t cca_serialnr_show(struct device *dev,
78 struct device_attribute *attr,
79 char *buf)
80 {
81 struct cca_info ci;
82 struct ap_card *ac = to_ap_card(dev);
83 struct zcrypt_card *zc = ac->private;
84
85 memset(&ci, 0, sizeof(ci));
86
87 if (ap_domain_index >= 0)
88 cca_get_info(ac->id, ap_domain_index, &ci, zc->online);
89
90 return scnprintf(buf, PAGE_SIZE, "%s\n", ci.serial);
91 }
92
93 static struct device_attribute dev_attr_cca_serialnr =
94 __ATTR(serialnr, 0444, cca_serialnr_show, NULL);
95
96 static struct attribute *cca_card_attrs[] = {
97 &dev_attr_cca_serialnr.attr,
98 NULL,
99 };
100
101 static const struct attribute_group cca_card_attr_grp = {
102 .attrs = cca_card_attrs,
103 };
104
105 /*
106 * CCA queue additional device attributes
107 */
108 static ssize_t cca_mkvps_show(struct device *dev,
109 struct device_attribute *attr,
110 char *buf)
111 {
112 int n = 0;
113 struct cca_info ci;
114 struct zcrypt_queue *zq = to_ap_queue(dev)->private;
115 static const char * const cao_state[] = { "invalid", "valid" };
116 static const char * const new_state[] = { "empty", "partial", "full" };
117
118 memset(&ci, 0, sizeof(ci));
119
120 cca_get_info(AP_QID_CARD(zq->queue->qid),
121 AP_QID_QUEUE(zq->queue->qid),
122 &ci, zq->online);
123
124 if (ci.new_mk_state >= '1' && ci.new_mk_state <= '3')
125 n = scnprintf(buf, PAGE_SIZE, "AES NEW: %s 0x%016llx\n",
126 new_state[ci.new_mk_state - '1'], ci.new_mkvp);
127 else
128 n = scnprintf(buf, PAGE_SIZE, "AES NEW: - -\n");
129
130 if (ci.cur_mk_state >= '1' && ci.cur_mk_state <= '2')
131 n += scnprintf(buf + n, PAGE_SIZE - n,
132 "AES CUR: %s 0x%016llx\n",
133 cao_state[ci.cur_mk_state - '1'], ci.cur_mkvp);
134 else
135 n += scnprintf(buf + n, PAGE_SIZE - n, "AES CUR: - -\n");
136
137 if (ci.old_mk_state >= '1' && ci.old_mk_state <= '2')
138 n += scnprintf(buf + n, PAGE_SIZE - n,
139 "AES OLD: %s 0x%016llx\n",
140 cao_state[ci.old_mk_state - '1'], ci.old_mkvp);
141 else
142 n += scnprintf(buf + n, PAGE_SIZE - n, "AES OLD: - -\n");
143
144 return n;
145 }
146
147 static struct device_attribute dev_attr_cca_mkvps =
148 __ATTR(mkvps, 0444, cca_mkvps_show, NULL);
149
150 static struct attribute *cca_queue_attrs[] = {
151 &dev_attr_cca_mkvps.attr,
152 NULL,
153 };
154
155 static const struct attribute_group cca_queue_attr_grp = {
156 .attrs = cca_queue_attrs,
157 };
158
159 /*
160 * EP11 card additional device attributes
161 */
162 static ssize_t ep11_api_ordinalnr_show(struct device *dev,
163 struct device_attribute *attr,
164 char *buf)
165 {
166 struct ep11_card_info ci;
167 struct ap_card *ac = to_ap_card(dev);
168 struct zcrypt_card *zc = ac->private;
169
170 memset(&ci, 0, sizeof(ci));
171
172 ep11_get_card_info(ac->id, &ci, zc->online);
173
174 if (ci.API_ord_nr > 0)
175 return scnprintf(buf, PAGE_SIZE, "%u\n", ci.API_ord_nr);
176 else
177 return scnprintf(buf, PAGE_SIZE, "\n");
178 }
179
180 static struct device_attribute dev_attr_ep11_api_ordinalnr =
181 __ATTR(API_ordinalnr, 0444, ep11_api_ordinalnr_show, NULL);
182
183 static ssize_t ep11_fw_version_show(struct device *dev,
184 struct device_attribute *attr,
185 char *buf)
186 {
187 struct ep11_card_info ci;
188 struct ap_card *ac = to_ap_card(dev);
189 struct zcrypt_card *zc = ac->private;
190
191 memset(&ci, 0, sizeof(ci));
192
193 ep11_get_card_info(ac->id, &ci, zc->online);
194
195 if (ci.FW_version > 0)
196 return scnprintf(buf, PAGE_SIZE, "%d.%d\n",
197 (int)(ci.FW_version >> 8),
198 (int)(ci.FW_version & 0xFF));
199 else
200 return scnprintf(buf, PAGE_SIZE, "\n");
201 }
202
203 static struct device_attribute dev_attr_ep11_fw_version =
204 __ATTR(FW_version, 0444, ep11_fw_version_show, NULL);
205
206 static ssize_t ep11_serialnr_show(struct device *dev,
207 struct device_attribute *attr,
208 char *buf)
209 {
210 struct ep11_card_info ci;
211 struct ap_card *ac = to_ap_card(dev);
212 struct zcrypt_card *zc = ac->private;
213
214 memset(&ci, 0, sizeof(ci));
215
216 ep11_get_card_info(ac->id, &ci, zc->online);
217
218 if (ci.serial[0])
219 return scnprintf(buf, PAGE_SIZE, "%16.16s\n", ci.serial);
220 else
221 return scnprintf(buf, PAGE_SIZE, "\n");
222 }
223
224 static struct device_attribute dev_attr_ep11_serialnr =
225 __ATTR(serialnr, 0444, ep11_serialnr_show, NULL);
226
227 static const struct {
228 int mode_bit;
229 const char *mode_txt;
230 } ep11_op_modes[] = {
231 { 0, "FIPS2009" },
232 { 1, "BSI2009" },
233 { 2, "FIPS2011" },
234 { 3, "BSI2011" },
235 { 6, "BSICC2017" },
236 { 0, NULL }
237 };
238
239 static ssize_t ep11_card_op_modes_show(struct device *dev,
240 struct device_attribute *attr,
241 char *buf)
242 {
243 int i, n = 0;
244 struct ep11_card_info ci;
245 struct ap_card *ac = to_ap_card(dev);
246 struct zcrypt_card *zc = ac->private;
247
248 memset(&ci, 0, sizeof(ci));
249
250 ep11_get_card_info(ac->id, &ci, zc->online);
251
252 for (i = 0; ep11_op_modes[i].mode_txt; i++) {
253 if (ci.op_mode & (1 << ep11_op_modes[i].mode_bit)) {
254 if (n > 0)
255 buf[n++] = ' ';
256 n += scnprintf(buf + n, PAGE_SIZE - n,
257 "%s", ep11_op_modes[i].mode_txt);
258 }
259 }
260 n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
261
262 return n;
263 }
264
265 static struct device_attribute dev_attr_ep11_card_op_modes =
266 __ATTR(op_modes, 0444, ep11_card_op_modes_show, NULL);
267
268 static struct attribute *ep11_card_attrs[] = {
269 &dev_attr_ep11_api_ordinalnr.attr,
270 &dev_attr_ep11_fw_version.attr,
271 &dev_attr_ep11_serialnr.attr,
272 &dev_attr_ep11_card_op_modes.attr,
273 NULL,
274 };
275
276 static const struct attribute_group ep11_card_attr_grp = {
277 .attrs = ep11_card_attrs,
278 };
279
280 /*
281 * EP11 queue additional device attributes
282 */
283
284 static ssize_t ep11_mkvps_show(struct device *dev,
285 struct device_attribute *attr,
286 char *buf)
287 {
288 int n = 0;
289 struct ep11_domain_info di;
290 struct zcrypt_queue *zq = to_ap_queue(dev)->private;
291 static const char * const cwk_state[] = { "invalid", "valid" };
292 static const char * const nwk_state[] = { "empty", "uncommitted",
293 "committed" };
294
295 memset(&di, 0, sizeof(di));
296
297 if (zq->online)
298 ep11_get_domain_info(AP_QID_CARD(zq->queue->qid),
299 AP_QID_QUEUE(zq->queue->qid),
300 &di);
301
302 if (di.cur_wk_state == '0') {
303 n = scnprintf(buf, PAGE_SIZE, "WK CUR: %s -\n",
304 cwk_state[di.cur_wk_state - '0']);
305 } else if (di.cur_wk_state == '1') {
306 n = scnprintf(buf, PAGE_SIZE, "WK CUR: %s 0x",
307 cwk_state[di.cur_wk_state - '0']);
308 bin2hex(buf + n, di.cur_wkvp, sizeof(di.cur_wkvp));
309 n += 2 * sizeof(di.cur_wkvp);
310 n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
311 } else
312 n = scnprintf(buf, PAGE_SIZE, "WK CUR: - -\n");
313
314 if (di.new_wk_state == '0') {
315 n += scnprintf(buf + n, PAGE_SIZE - n, "WK NEW: %s -\n",
316 nwk_state[di.new_wk_state - '0']);
317 } else if (di.new_wk_state >= '1' && di.new_wk_state <= '2') {
318 n += scnprintf(buf + n, PAGE_SIZE - n, "WK NEW: %s 0x",
319 nwk_state[di.new_wk_state - '0']);
320 bin2hex(buf + n, di.new_wkvp, sizeof(di.new_wkvp));
321 n += 2 * sizeof(di.new_wkvp);
322 n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
323 } else
324 n += scnprintf(buf + n, PAGE_SIZE - n, "WK NEW: - -\n");
325
326 return n;
327 }
328
329 static struct device_attribute dev_attr_ep11_mkvps =
330 __ATTR(mkvps, 0444, ep11_mkvps_show, NULL);
331
332 static ssize_t ep11_queue_op_modes_show(struct device *dev,
333 struct device_attribute *attr,
334 char *buf)
335 {
336 int i, n = 0;
337 struct ep11_domain_info di;
338 struct zcrypt_queue *zq = to_ap_queue(dev)->private;
339
340 memset(&di, 0, sizeof(di));
341
342 if (zq->online)
343 ep11_get_domain_info(AP_QID_CARD(zq->queue->qid),
344 AP_QID_QUEUE(zq->queue->qid),
345 &di);
346
347 for (i = 0; ep11_op_modes[i].mode_txt; i++) {
348 if (di.op_mode & (1 << ep11_op_modes[i].mode_bit)) {
349 if (n > 0)
350 buf[n++] = ' ';
351 n += scnprintf(buf + n, PAGE_SIZE - n,
352 "%s", ep11_op_modes[i].mode_txt);
353 }
354 }
355 n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
356
357 return n;
358 }
359
360 static struct device_attribute dev_attr_ep11_queue_op_modes =
361 __ATTR(op_modes, 0444, ep11_queue_op_modes_show, NULL);
362
363 static struct attribute *ep11_queue_attrs[] = {
364 &dev_attr_ep11_mkvps.attr,
365 &dev_attr_ep11_queue_op_modes.attr,
366 NULL,
367 };
368
369 static const struct attribute_group ep11_queue_attr_grp = {
370 .attrs = ep11_queue_attrs,
371 };
372
373 /**
374 * Probe function for CEX4/CEX5/CEX6/CEX7 card device. It always
375 * accepts the AP device since the bus_match already checked
376 * the hardware type.
377 * @ap_dev: pointer to the AP device.
378 */
379 static int zcrypt_cex4_card_probe(struct ap_device *ap_dev)
380 {
381 /*
382 * Normalized speed ratings per crypto adapter
383 * MEX_1k, MEX_2k, MEX_4k, CRT_1k, CRT_2k, CRT_4k, RNG, SECKEY
384 */
385 static const int CEX4A_SPEED_IDX[] = {
386 14, 19, 249, 42, 228, 1458, 0, 0};
387 static const int CEX5A_SPEED_IDX[] = {
388 8, 9, 20, 18, 66, 458, 0, 0};
389 static const int CEX6A_SPEED_IDX[] = {
390 6, 9, 20, 17, 65, 438, 0, 0};
391 static const int CEX7A_SPEED_IDX[] = {
392 6, 8, 17, 15, 54, 362, 0, 0};
393
394 static const int CEX4C_SPEED_IDX[] = {
395 59, 69, 308, 83, 278, 2204, 209, 40};
396 static const int CEX5C_SPEED_IDX[] = {
397 24, 31, 50, 37, 90, 479, 27, 10};
398 static const int CEX6C_SPEED_IDX[] = {
399 16, 20, 32, 27, 77, 455, 24, 9};
400 static const int CEX7C_SPEED_IDX[] = {
401 14, 16, 26, 23, 64, 376, 23, 8};
402
403 static const int CEX4P_SPEED_IDX[] = {
404 0, 0, 0, 0, 0, 0, 0, 50};
405 static const int CEX5P_SPEED_IDX[] = {
406 0, 0, 0, 0, 0, 0, 0, 10};
407 static const int CEX6P_SPEED_IDX[] = {
408 0, 0, 0, 0, 0, 0, 0, 9};
409 static const int CEX7P_SPEED_IDX[] = {
410 0, 0, 0, 0, 0, 0, 0, 8};
411
412 struct ap_card *ac = to_ap_card(&ap_dev->device);
413 struct zcrypt_card *zc;
414 int rc = 0;
415
416 zc = zcrypt_card_alloc();
417 if (!zc)
418 return -ENOMEM;
419 zc->card = ac;
420 ac->private = zc;
421 if (ap_test_bit(&ac->functions, AP_FUNC_ACCEL)) {
422 if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) {
423 zc->type_string = "CEX4A";
424 zc->user_space_type = ZCRYPT_CEX4;
425 memcpy(zc->speed_rating, CEX4A_SPEED_IDX,
426 sizeof(CEX4A_SPEED_IDX));
427 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX5) {
428 zc->type_string = "CEX5A";
429 zc->user_space_type = ZCRYPT_CEX5;
430 memcpy(zc->speed_rating, CEX5A_SPEED_IDX,
431 sizeof(CEX5A_SPEED_IDX));
432 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX6) {
433 zc->type_string = "CEX6A";
434 zc->user_space_type = ZCRYPT_CEX6;
435 memcpy(zc->speed_rating, CEX6A_SPEED_IDX,
436 sizeof(CEX6A_SPEED_IDX));
437 } else {
438 zc->type_string = "CEX7A";
439 /* wrong user space type, just for compatibility
440 * with the ZCRYPT_STATUS_MASK ioctl.
441 */
442 zc->user_space_type = ZCRYPT_CEX6;
443 memcpy(zc->speed_rating, CEX7A_SPEED_IDX,
444 sizeof(CEX7A_SPEED_IDX));
445 }
446 zc->min_mod_size = CEX4A_MIN_MOD_SIZE;
447 if (ap_test_bit(&ac->functions, AP_FUNC_MEX4K) &&
448 ap_test_bit(&ac->functions, AP_FUNC_CRT4K)) {
449 zc->max_mod_size = CEX4A_MAX_MOD_SIZE_4K;
450 zc->max_exp_bit_length =
451 CEX4A_MAX_MOD_SIZE_4K;
452 } else {
453 zc->max_mod_size = CEX4A_MAX_MOD_SIZE_2K;
454 zc->max_exp_bit_length =
455 CEX4A_MAX_MOD_SIZE_2K;
456 }
457 } else if (ap_test_bit(&ac->functions, AP_FUNC_COPRO)) {
458 if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) {
459 zc->type_string = "CEX4C";
460 /* wrong user space type, must be CEX4
461 * just keep it for cca compatibility
462 */
463 zc->user_space_type = ZCRYPT_CEX3C;
464 memcpy(zc->speed_rating, CEX4C_SPEED_IDX,
465 sizeof(CEX4C_SPEED_IDX));
466 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX5) {
467 zc->type_string = "CEX5C";
468 /* wrong user space type, must be CEX5
469 * just keep it for cca compatibility
470 */
471 zc->user_space_type = ZCRYPT_CEX3C;
472 memcpy(zc->speed_rating, CEX5C_SPEED_IDX,
473 sizeof(CEX5C_SPEED_IDX));
474 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX6) {
475 zc->type_string = "CEX6C";
476 /* wrong user space type, must be CEX6
477 * just keep it for cca compatibility
478 */
479 zc->user_space_type = ZCRYPT_CEX3C;
480 memcpy(zc->speed_rating, CEX6C_SPEED_IDX,
481 sizeof(CEX6C_SPEED_IDX));
482 } else {
483 zc->type_string = "CEX7C";
484 /* wrong user space type, must be CEX7
485 * just keep it for cca compatibility
486 */
487 zc->user_space_type = ZCRYPT_CEX3C;
488 memcpy(zc->speed_rating, CEX7C_SPEED_IDX,
489 sizeof(CEX7C_SPEED_IDX));
490 }
491 zc->min_mod_size = CEX4C_MIN_MOD_SIZE;
492 zc->max_mod_size = CEX4C_MAX_MOD_SIZE;
493 zc->max_exp_bit_length = CEX4C_MAX_MOD_SIZE;
494 } else if (ap_test_bit(&ac->functions, AP_FUNC_EP11)) {
495 if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) {
496 zc->type_string = "CEX4P";
497 zc->user_space_type = ZCRYPT_CEX4;
498 memcpy(zc->speed_rating, CEX4P_SPEED_IDX,
499 sizeof(CEX4P_SPEED_IDX));
500 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX5) {
501 zc->type_string = "CEX5P";
502 zc->user_space_type = ZCRYPT_CEX5;
503 memcpy(zc->speed_rating, CEX5P_SPEED_IDX,
504 sizeof(CEX5P_SPEED_IDX));
505 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX6) {
506 zc->type_string = "CEX6P";
507 zc->user_space_type = ZCRYPT_CEX6;
508 memcpy(zc->speed_rating, CEX6P_SPEED_IDX,
509 sizeof(CEX6P_SPEED_IDX));
510 } else {
511 zc->type_string = "CEX7P";
512 /* wrong user space type, just for compatibility
513 * with the ZCRYPT_STATUS_MASK ioctl.
514 */
515 zc->user_space_type = ZCRYPT_CEX6;
516 memcpy(zc->speed_rating, CEX7P_SPEED_IDX,
517 sizeof(CEX7P_SPEED_IDX));
518 }
519 zc->min_mod_size = CEX4C_MIN_MOD_SIZE;
520 zc->max_mod_size = CEX4C_MAX_MOD_SIZE;
521 zc->max_exp_bit_length = CEX4C_MAX_MOD_SIZE;
522 } else {
523 zcrypt_card_free(zc);
524 return -ENODEV;
525 }
526 zc->online = 1;
527
528 rc = zcrypt_card_register(zc);
529 if (rc) {
530 ac->private = NULL;
531 zcrypt_card_free(zc);
532 goto out;
533 }
534
535 if (ap_test_bit(&ac->functions, AP_FUNC_COPRO)) {
536 rc = sysfs_create_group(&ap_dev->device.kobj,
537 &cca_card_attr_grp);
538 if (rc)
539 zcrypt_card_unregister(zc);
540 } else if (ap_test_bit(&ac->functions, AP_FUNC_EP11)) {
541 rc = sysfs_create_group(&ap_dev->device.kobj,
542 &ep11_card_attr_grp);
543 if (rc)
544 zcrypt_card_unregister(zc);
545 }
546
547 out:
548 return rc;
549 }
550
551 /**
552 * This is called to remove the CEX4/CEX5/CEX6/CEX7 card driver
553 * information if an AP card device is removed.
554 */
555 static void zcrypt_cex4_card_remove(struct ap_device *ap_dev)
556 {
557 struct ap_card *ac = to_ap_card(&ap_dev->device);
558 struct zcrypt_card *zc = ac->private;
559
560 if (ap_test_bit(&ac->functions, AP_FUNC_COPRO))
561 sysfs_remove_group(&ap_dev->device.kobj, &cca_card_attr_grp);
562 else if (ap_test_bit(&ac->functions, AP_FUNC_EP11))
563 sysfs_remove_group(&ap_dev->device.kobj, &ep11_card_attr_grp);
564 if (zc)
565 zcrypt_card_unregister(zc);
566 }
567
568 static struct ap_driver zcrypt_cex4_card_driver = {
569 .probe = zcrypt_cex4_card_probe,
570 .remove = zcrypt_cex4_card_remove,
571 .ids = zcrypt_cex4_card_ids,
572 .flags = AP_DRIVER_FLAG_DEFAULT,
573 };
574
575 /**
576 * Probe function for CEX4/CEX5/CEX6/CEX7 queue device. It always
577 * accepts the AP device since the bus_match already checked
578 * the hardware type.
579 * @ap_dev: pointer to the AP device.
580 */
581 static int zcrypt_cex4_queue_probe(struct ap_device *ap_dev)
582 {
583 struct ap_queue *aq = to_ap_queue(&ap_dev->device);
584 struct zcrypt_queue *zq;
585 int rc;
586
587 if (ap_test_bit(&aq->card->functions, AP_FUNC_ACCEL)) {
588 zq = zcrypt_queue_alloc(CEX4A_MAX_MESSAGE_SIZE);
589 if (!zq)
590 return -ENOMEM;
591 zq->ops = zcrypt_msgtype(MSGTYPE50_NAME,
592 MSGTYPE50_VARIANT_DEFAULT);
593 } else if (ap_test_bit(&aq->card->functions, AP_FUNC_COPRO)) {
594 zq = zcrypt_queue_alloc(CEX4C_MAX_MESSAGE_SIZE);
595 if (!zq)
596 return -ENOMEM;
597 zq->ops = zcrypt_msgtype(MSGTYPE06_NAME,
598 MSGTYPE06_VARIANT_DEFAULT);
599 } else if (ap_test_bit(&aq->card->functions, AP_FUNC_EP11)) {
600 zq = zcrypt_queue_alloc(CEX4C_MAX_MESSAGE_SIZE);
601 if (!zq)
602 return -ENOMEM;
603 zq->ops = zcrypt_msgtype(MSGTYPE06_NAME,
604 MSGTYPE06_VARIANT_EP11);
605 } else {
606 return -ENODEV;
607 }
608
609 zq->queue = aq;
610 zq->online = 1;
611 atomic_set(&zq->load, 0);
612 ap_queue_init_state(aq);
613 ap_queue_init_reply(aq, &zq->reply);
614 aq->request_timeout = CEX4_CLEANUP_TIME,
615 aq->private = zq;
616 rc = zcrypt_queue_register(zq);
617 if (rc) {
618 aq->private = NULL;
619 zcrypt_queue_free(zq);
620 goto out;
621 }
622
623 if (ap_test_bit(&aq->card->functions, AP_FUNC_COPRO)) {
624 rc = sysfs_create_group(&ap_dev->device.kobj,
625 &cca_queue_attr_grp);
626 if (rc)
627 zcrypt_queue_unregister(zq);
628 } else if (ap_test_bit(&aq->card->functions, AP_FUNC_EP11)) {
629 rc = sysfs_create_group(&ap_dev->device.kobj,
630 &ep11_queue_attr_grp);
631 if (rc)
632 zcrypt_queue_unregister(zq);
633 }
634
635 out:
636 return rc;
637 }
638
639 /**
640 * This is called to remove the CEX4/CEX5/CEX6/CEX7 queue driver
641 * information if an AP queue device is removed.
642 */
643 static void zcrypt_cex4_queue_remove(struct ap_device *ap_dev)
644 {
645 struct ap_queue *aq = to_ap_queue(&ap_dev->device);
646 struct zcrypt_queue *zq = aq->private;
647
648 if (ap_test_bit(&aq->card->functions, AP_FUNC_COPRO))
649 sysfs_remove_group(&ap_dev->device.kobj, &cca_queue_attr_grp);
650 else if (ap_test_bit(&aq->card->functions, AP_FUNC_EP11))
651 sysfs_remove_group(&ap_dev->device.kobj, &ep11_queue_attr_grp);
652 if (zq)
653 zcrypt_queue_unregister(zq);
654 }
655
656 static struct ap_driver zcrypt_cex4_queue_driver = {
657 .probe = zcrypt_cex4_queue_probe,
658 .remove = zcrypt_cex4_queue_remove,
659 .ids = zcrypt_cex4_queue_ids,
660 .flags = AP_DRIVER_FLAG_DEFAULT,
661 };
662
663 int __init zcrypt_cex4_init(void)
664 {
665 int rc;
666
667 rc = ap_driver_register(&zcrypt_cex4_card_driver,
668 THIS_MODULE, "cex4card");
669 if (rc)
670 return rc;
671
672 rc = ap_driver_register(&zcrypt_cex4_queue_driver,
673 THIS_MODULE, "cex4queue");
674 if (rc)
675 ap_driver_unregister(&zcrypt_cex4_card_driver);
676
677 return rc;
678 }
679
680 void __exit zcrypt_cex4_exit(void)
681 {
682 ap_driver_unregister(&zcrypt_cex4_queue_driver);
683 ap_driver_unregister(&zcrypt_cex4_card_driver);
684 }
685
686 module_init(zcrypt_cex4_init);
687 module_exit(zcrypt_cex4_exit);
Linux with added FPC-III support