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 */
cca_serialnr_show(struct device * dev,struct device_attribute * attr,char * buf)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 */
cca_mkvps_show(struct device * dev,struct device_attribute * attr,char * buf)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_aes_mk_state >= '1' && ci.new_aes_mk_state <= '3')
125 n = scnprintf(buf, PAGE_SIZE, "AES NEW: %s 0x%016llx\n",
126 new_state[ci.new_aes_mk_state - '1'],
127 ci.new_aes_mkvp);
128 else
129 n = scnprintf(buf, PAGE_SIZE, "AES NEW: - -\n");
130
131 if (ci.cur_aes_mk_state >= '1' && ci.cur_aes_mk_state <= '2')
132 n += scnprintf(buf + n, PAGE_SIZE - n,
133 "AES CUR: %s 0x%016llx\n",
134 cao_state[ci.cur_aes_mk_state - '1'],
135 ci.cur_aes_mkvp);
136 else
137 n += scnprintf(buf + n, PAGE_SIZE - n, "AES CUR: - -\n");
138
139 if (ci.old_aes_mk_state >= '1' && ci.old_aes_mk_state <= '2')
140 n += scnprintf(buf + n, PAGE_SIZE - n,
141 "AES OLD: %s 0x%016llx\n",
142 cao_state[ci.old_aes_mk_state - '1'],
143 ci.old_aes_mkvp);
144 else
145 n += scnprintf(buf + n, PAGE_SIZE - n, "AES OLD: - -\n");
146
147 if (ci.new_apka_mk_state >= '1' && ci.new_apka_mk_state <= '3')
148 n += scnprintf(buf + n, PAGE_SIZE - n,
149 "APKA NEW: %s 0x%016llx\n",
150 new_state[ci.new_apka_mk_state - '1'],
151 ci.new_apka_mkvp);
152 else
153 n += scnprintf(buf + n, PAGE_SIZE - n, "APKA NEW: - -\n");
154
155 if (ci.cur_apka_mk_state >= '1' && ci.cur_apka_mk_state <= '2')
156 n += scnprintf(buf + n, PAGE_SIZE - n,
157 "APKA CUR: %s 0x%016llx\n",
158 cao_state[ci.cur_apka_mk_state - '1'],
159 ci.cur_apka_mkvp);
160 else
161 n += scnprintf(buf + n, PAGE_SIZE - n, "APKA CUR: - -\n");
162
163 if (ci.old_apka_mk_state >= '1' && ci.old_apka_mk_state <= '2')
164 n += scnprintf(buf + n, PAGE_SIZE - n,
165 "APKA OLD: %s 0x%016llx\n",
166 cao_state[ci.old_apka_mk_state - '1'],
167 ci.old_apka_mkvp);
168 else
169 n += scnprintf(buf + n, PAGE_SIZE - n, "APKA OLD: - -\n");
170
171 return n;
172 }
173
174 static struct device_attribute dev_attr_cca_mkvps =
175 __ATTR(mkvps, 0444, cca_mkvps_show, NULL);
176
177 static struct attribute *cca_queue_attrs[] = {
178 &dev_attr_cca_mkvps.attr,
179 NULL,
180 };
181
182 static const struct attribute_group cca_queue_attr_grp = {
183 .attrs = cca_queue_attrs,
184 };
185
186 /*
187 * EP11 card additional device attributes
188 */
ep11_api_ordinalnr_show(struct device * dev,struct device_attribute * attr,char * buf)189 static ssize_t ep11_api_ordinalnr_show(struct device *dev,
190 struct device_attribute *attr,
191 char *buf)
192 {
193 struct ep11_card_info ci;
194 struct ap_card *ac = to_ap_card(dev);
195 struct zcrypt_card *zc = ac->private;
196
197 memset(&ci, 0, sizeof(ci));
198
199 ep11_get_card_info(ac->id, &ci, zc->online);
200
201 if (ci.API_ord_nr > 0)
202 return scnprintf(buf, PAGE_SIZE, "%u\n", ci.API_ord_nr);
203 else
204 return scnprintf(buf, PAGE_SIZE, "\n");
205 }
206
207 static struct device_attribute dev_attr_ep11_api_ordinalnr =
208 __ATTR(API_ordinalnr, 0444, ep11_api_ordinalnr_show, NULL);
209
ep11_fw_version_show(struct device * dev,struct device_attribute * attr,char * buf)210 static ssize_t ep11_fw_version_show(struct device *dev,
211 struct device_attribute *attr,
212 char *buf)
213 {
214 struct ep11_card_info ci;
215 struct ap_card *ac = to_ap_card(dev);
216 struct zcrypt_card *zc = ac->private;
217
218 memset(&ci, 0, sizeof(ci));
219
220 ep11_get_card_info(ac->id, &ci, zc->online);
221
222 if (ci.FW_version > 0)
223 return scnprintf(buf, PAGE_SIZE, "%d.%d\n",
224 (int)(ci.FW_version >> 8),
225 (int)(ci.FW_version & 0xFF));
226 else
227 return scnprintf(buf, PAGE_SIZE, "\n");
228 }
229
230 static struct device_attribute dev_attr_ep11_fw_version =
231 __ATTR(FW_version, 0444, ep11_fw_version_show, NULL);
232
ep11_serialnr_show(struct device * dev,struct device_attribute * attr,char * buf)233 static ssize_t ep11_serialnr_show(struct device *dev,
234 struct device_attribute *attr,
235 char *buf)
236 {
237 struct ep11_card_info ci;
238 struct ap_card *ac = to_ap_card(dev);
239 struct zcrypt_card *zc = ac->private;
240
241 memset(&ci, 0, sizeof(ci));
242
243 ep11_get_card_info(ac->id, &ci, zc->online);
244
245 if (ci.serial[0])
246 return scnprintf(buf, PAGE_SIZE, "%16.16s\n", ci.serial);
247 else
248 return scnprintf(buf, PAGE_SIZE, "\n");
249 }
250
251 static struct device_attribute dev_attr_ep11_serialnr =
252 __ATTR(serialnr, 0444, ep11_serialnr_show, NULL);
253
254 static const struct {
255 int mode_bit;
256 const char *mode_txt;
257 } ep11_op_modes[] = {
258 { 0, "FIPS2009" },
259 { 1, "BSI2009" },
260 { 2, "FIPS2011" },
261 { 3, "BSI2011" },
262 { 6, "BSICC2017" },
263 { 0, NULL }
264 };
265
ep11_card_op_modes_show(struct device * dev,struct device_attribute * attr,char * buf)266 static ssize_t ep11_card_op_modes_show(struct device *dev,
267 struct device_attribute *attr,
268 char *buf)
269 {
270 int i, n = 0;
271 struct ep11_card_info ci;
272 struct ap_card *ac = to_ap_card(dev);
273 struct zcrypt_card *zc = ac->private;
274
275 memset(&ci, 0, sizeof(ci));
276
277 ep11_get_card_info(ac->id, &ci, zc->online);
278
279 for (i = 0; ep11_op_modes[i].mode_txt; i++) {
280 if (ci.op_mode & (1ULL << ep11_op_modes[i].mode_bit)) {
281 if (n > 0)
282 buf[n++] = ' ';
283 n += scnprintf(buf + n, PAGE_SIZE - n,
284 "%s", ep11_op_modes[i].mode_txt);
285 }
286 }
287 n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
288
289 return n;
290 }
291
292 static struct device_attribute dev_attr_ep11_card_op_modes =
293 __ATTR(op_modes, 0444, ep11_card_op_modes_show, NULL);
294
295 static struct attribute *ep11_card_attrs[] = {
296 &dev_attr_ep11_api_ordinalnr.attr,
297 &dev_attr_ep11_fw_version.attr,
298 &dev_attr_ep11_serialnr.attr,
299 &dev_attr_ep11_card_op_modes.attr,
300 NULL,
301 };
302
303 static const struct attribute_group ep11_card_attr_grp = {
304 .attrs = ep11_card_attrs,
305 };
306
307 /*
308 * EP11 queue additional device attributes
309 */
310
ep11_mkvps_show(struct device * dev,struct device_attribute * attr,char * buf)311 static ssize_t ep11_mkvps_show(struct device *dev,
312 struct device_attribute *attr,
313 char *buf)
314 {
315 int n = 0;
316 struct ep11_domain_info di;
317 struct zcrypt_queue *zq = to_ap_queue(dev)->private;
318 static const char * const cwk_state[] = { "invalid", "valid" };
319 static const char * const nwk_state[] = { "empty", "uncommitted",
320 "committed" };
321
322 memset(&di, 0, sizeof(di));
323
324 if (zq->online)
325 ep11_get_domain_info(AP_QID_CARD(zq->queue->qid),
326 AP_QID_QUEUE(zq->queue->qid),
327 &di);
328
329 if (di.cur_wk_state == '0') {
330 n = scnprintf(buf, PAGE_SIZE, "WK CUR: %s -\n",
331 cwk_state[di.cur_wk_state - '0']);
332 } else if (di.cur_wk_state == '1') {
333 n = scnprintf(buf, PAGE_SIZE, "WK CUR: %s 0x",
334 cwk_state[di.cur_wk_state - '0']);
335 bin2hex(buf + n, di.cur_wkvp, sizeof(di.cur_wkvp));
336 n += 2 * sizeof(di.cur_wkvp);
337 n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
338 } else
339 n = scnprintf(buf, PAGE_SIZE, "WK CUR: - -\n");
340
341 if (di.new_wk_state == '0') {
342 n += scnprintf(buf + n, PAGE_SIZE - n, "WK NEW: %s -\n",
343 nwk_state[di.new_wk_state - '0']);
344 } else if (di.new_wk_state >= '1' && di.new_wk_state <= '2') {
345 n += scnprintf(buf + n, PAGE_SIZE - n, "WK NEW: %s 0x",
346 nwk_state[di.new_wk_state - '0']);
347 bin2hex(buf + n, di.new_wkvp, sizeof(di.new_wkvp));
348 n += 2 * sizeof(di.new_wkvp);
349 n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
350 } else
351 n += scnprintf(buf + n, PAGE_SIZE - n, "WK NEW: - -\n");
352
353 return n;
354 }
355
356 static struct device_attribute dev_attr_ep11_mkvps =
357 __ATTR(mkvps, 0444, ep11_mkvps_show, NULL);
358
ep11_queue_op_modes_show(struct device * dev,struct device_attribute * attr,char * buf)359 static ssize_t ep11_queue_op_modes_show(struct device *dev,
360 struct device_attribute *attr,
361 char *buf)
362 {
363 int i, n = 0;
364 struct ep11_domain_info di;
365 struct zcrypt_queue *zq = to_ap_queue(dev)->private;
366
367 memset(&di, 0, sizeof(di));
368
369 if (zq->online)
370 ep11_get_domain_info(AP_QID_CARD(zq->queue->qid),
371 AP_QID_QUEUE(zq->queue->qid),
372 &di);
373
374 for (i = 0; ep11_op_modes[i].mode_txt; i++) {
375 if (di.op_mode & (1ULL << ep11_op_modes[i].mode_bit)) {
376 if (n > 0)
377 buf[n++] = ' ';
378 n += scnprintf(buf + n, PAGE_SIZE - n,
379 "%s", ep11_op_modes[i].mode_txt);
380 }
381 }
382 n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
383
384 return n;
385 }
386
387 static struct device_attribute dev_attr_ep11_queue_op_modes =
388 __ATTR(op_modes, 0444, ep11_queue_op_modes_show, NULL);
389
390 static struct attribute *ep11_queue_attrs[] = {
391 &dev_attr_ep11_mkvps.attr,
392 &dev_attr_ep11_queue_op_modes.attr,
393 NULL,
394 };
395
396 static const struct attribute_group ep11_queue_attr_grp = {
397 .attrs = ep11_queue_attrs,
398 };
399
400 /**
401 * Probe function for CEX4/CEX5/CEX6/CEX7 card device. It always
402 * accepts the AP device since the bus_match already checked
403 * the hardware type.
404 * @ap_dev: pointer to the AP device.
405 */
zcrypt_cex4_card_probe(struct ap_device * ap_dev)406 static int zcrypt_cex4_card_probe(struct ap_device *ap_dev)
407 {
408 /*
409 * Normalized speed ratings per crypto adapter
410 * MEX_1k, MEX_2k, MEX_4k, CRT_1k, CRT_2k, CRT_4k, RNG, SECKEY
411 */
412 static const int CEX4A_SPEED_IDX[NUM_OPS] = {
413 14, 19, 249, 42, 228, 1458, 0, 0};
414 static const int CEX5A_SPEED_IDX[NUM_OPS] = {
415 8, 9, 20, 18, 66, 458, 0, 0};
416 static const int CEX6A_SPEED_IDX[NUM_OPS] = {
417 6, 9, 20, 17, 65, 438, 0, 0};
418 static const int CEX7A_SPEED_IDX[NUM_OPS] = {
419 6, 8, 17, 15, 54, 362, 0, 0};
420
421 static const int CEX4C_SPEED_IDX[NUM_OPS] = {
422 59, 69, 308, 83, 278, 2204, 209, 40};
423 static const int CEX5C_SPEED_IDX[] = {
424 24, 31, 50, 37, 90, 479, 27, 10};
425 static const int CEX6C_SPEED_IDX[NUM_OPS] = {
426 16, 20, 32, 27, 77, 455, 24, 9};
427 static const int CEX7C_SPEED_IDX[NUM_OPS] = {
428 14, 16, 26, 23, 64, 376, 23, 8};
429
430 static const int CEX4P_SPEED_IDX[NUM_OPS] = {
431 0, 0, 0, 0, 0, 0, 0, 50};
432 static const int CEX5P_SPEED_IDX[NUM_OPS] = {
433 0, 0, 0, 0, 0, 0, 0, 10};
434 static const int CEX6P_SPEED_IDX[NUM_OPS] = {
435 0, 0, 0, 0, 0, 0, 0, 9};
436 static const int CEX7P_SPEED_IDX[NUM_OPS] = {
437 0, 0, 0, 0, 0, 0, 0, 8};
438
439 struct ap_card *ac = to_ap_card(&ap_dev->device);
440 struct zcrypt_card *zc;
441 int rc = 0;
442
443 zc = zcrypt_card_alloc();
444 if (!zc)
445 return -ENOMEM;
446 zc->card = ac;
447 ac->private = zc;
448 if (ap_test_bit(&ac->functions, AP_FUNC_ACCEL)) {
449 if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) {
450 zc->type_string = "CEX4A";
451 zc->user_space_type = ZCRYPT_CEX4;
452 zc->speed_rating = CEX4A_SPEED_IDX;
453 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX5) {
454 zc->type_string = "CEX5A";
455 zc->user_space_type = ZCRYPT_CEX5;
456 zc->speed_rating = CEX5A_SPEED_IDX;
457 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX6) {
458 zc->type_string = "CEX6A";
459 zc->user_space_type = ZCRYPT_CEX6;
460 zc->speed_rating = CEX6A_SPEED_IDX;
461 } else {
462 zc->type_string = "CEX7A";
463 /* wrong user space type, just for compatibility
464 * with the ZCRYPT_STATUS_MASK ioctl.
465 */
466 zc->user_space_type = ZCRYPT_CEX6;
467 zc->speed_rating = CEX7A_SPEED_IDX;
468 }
469 zc->min_mod_size = CEX4A_MIN_MOD_SIZE;
470 if (ap_test_bit(&ac->functions, AP_FUNC_MEX4K) &&
471 ap_test_bit(&ac->functions, AP_FUNC_CRT4K)) {
472 zc->max_mod_size = CEX4A_MAX_MOD_SIZE_4K;
473 zc->max_exp_bit_length =
474 CEX4A_MAX_MOD_SIZE_4K;
475 } else {
476 zc->max_mod_size = CEX4A_MAX_MOD_SIZE_2K;
477 zc->max_exp_bit_length =
478 CEX4A_MAX_MOD_SIZE_2K;
479 }
480 } else if (ap_test_bit(&ac->functions, AP_FUNC_COPRO)) {
481 if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) {
482 zc->type_string = "CEX4C";
483 /* wrong user space type, must be CEX4
484 * just keep it for cca compatibility
485 */
486 zc->user_space_type = ZCRYPT_CEX3C;
487 zc->speed_rating = CEX4C_SPEED_IDX;
488 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX5) {
489 zc->type_string = "CEX5C";
490 /* wrong user space type, must be CEX5
491 * just keep it for cca compatibility
492 */
493 zc->user_space_type = ZCRYPT_CEX3C;
494 zc->speed_rating = CEX5C_SPEED_IDX;
495 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX6) {
496 zc->type_string = "CEX6C";
497 /* wrong user space type, must be CEX6
498 * just keep it for cca compatibility
499 */
500 zc->user_space_type = ZCRYPT_CEX3C;
501 zc->speed_rating = CEX6C_SPEED_IDX;
502 } else {
503 zc->type_string = "CEX7C";
504 /* wrong user space type, must be CEX7
505 * just keep it for cca compatibility
506 */
507 zc->user_space_type = ZCRYPT_CEX3C;
508 zc->speed_rating = CEX7C_SPEED_IDX;
509 }
510 zc->min_mod_size = CEX4C_MIN_MOD_SIZE;
511 zc->max_mod_size = CEX4C_MAX_MOD_SIZE;
512 zc->max_exp_bit_length = CEX4C_MAX_MOD_SIZE;
513 } else if (ap_test_bit(&ac->functions, AP_FUNC_EP11)) {
514 if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) {
515 zc->type_string = "CEX4P";
516 zc->user_space_type = ZCRYPT_CEX4;
517 zc->speed_rating = CEX4P_SPEED_IDX;
518 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX5) {
519 zc->type_string = "CEX5P";
520 zc->user_space_type = ZCRYPT_CEX5;
521 zc->speed_rating = CEX5P_SPEED_IDX;
522 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX6) {
523 zc->type_string = "CEX6P";
524 zc->user_space_type = ZCRYPT_CEX6;
525 zc->speed_rating = CEX6P_SPEED_IDX;
526 } else {
527 zc->type_string = "CEX7P";
528 /* wrong user space type, just for compatibility
529 * with the ZCRYPT_STATUS_MASK ioctl.
530 */
531 zc->user_space_type = ZCRYPT_CEX6;
532 zc->speed_rating = CEX7P_SPEED_IDX;
533 }
534 zc->min_mod_size = CEX4C_MIN_MOD_SIZE;
535 zc->max_mod_size = CEX4C_MAX_MOD_SIZE;
536 zc->max_exp_bit_length = CEX4C_MAX_MOD_SIZE;
537 } else {
538 zcrypt_card_free(zc);
539 return -ENODEV;
540 }
541 zc->online = 1;
542
543 rc = zcrypt_card_register(zc);
544 if (rc) {
545 ac->private = NULL;
546 zcrypt_card_free(zc);
547 return rc;
548 }
549
550 if (ap_test_bit(&ac->functions, AP_FUNC_COPRO)) {
551 rc = sysfs_create_group(&ap_dev->device.kobj,
552 &cca_card_attr_grp);
553 if (rc) {
554 zcrypt_card_unregister(zc);
555 ac->private = NULL;
556 zcrypt_card_free(zc);
557 }
558 } else if (ap_test_bit(&ac->functions, AP_FUNC_EP11)) {
559 rc = sysfs_create_group(&ap_dev->device.kobj,
560 &ep11_card_attr_grp);
561 if (rc) {
562 zcrypt_card_unregister(zc);
563 ac->private = NULL;
564 zcrypt_card_free(zc);
565 }
566 }
567
568 return rc;
569 }
570
571 /**
572 * This is called to remove the CEX4/CEX5/CEX6/CEX7 card driver
573 * information if an AP card device is removed.
574 */
zcrypt_cex4_card_remove(struct ap_device * ap_dev)575 static void zcrypt_cex4_card_remove(struct ap_device *ap_dev)
576 {
577 struct ap_card *ac = to_ap_card(&ap_dev->device);
578 struct zcrypt_card *zc = ac->private;
579
580 if (ap_test_bit(&ac->functions, AP_FUNC_COPRO))
581 sysfs_remove_group(&ap_dev->device.kobj, &cca_card_attr_grp);
582 else if (ap_test_bit(&ac->functions, AP_FUNC_EP11))
583 sysfs_remove_group(&ap_dev->device.kobj, &ep11_card_attr_grp);
584 if (zc)
585 zcrypt_card_unregister(zc);
586 }
587
588 static struct ap_driver zcrypt_cex4_card_driver = {
589 .probe = zcrypt_cex4_card_probe,
590 .remove = zcrypt_cex4_card_remove,
591 .ids = zcrypt_cex4_card_ids,
592 .flags = AP_DRIVER_FLAG_DEFAULT,
593 };
594
595 /**
596 * Probe function for CEX4/CEX5/CEX6/CEX7 queue device. It always
597 * accepts the AP device since the bus_match already checked
598 * the hardware type.
599 * @ap_dev: pointer to the AP device.
600 */
zcrypt_cex4_queue_probe(struct ap_device * ap_dev)601 static int zcrypt_cex4_queue_probe(struct ap_device *ap_dev)
602 {
603 struct ap_queue *aq = to_ap_queue(&ap_dev->device);
604 struct zcrypt_queue *zq;
605 int rc;
606
607 if (ap_test_bit(&aq->card->functions, AP_FUNC_ACCEL)) {
608 zq = zcrypt_queue_alloc(CEX4A_MAX_MESSAGE_SIZE);
609 if (!zq)
610 return -ENOMEM;
611 zq->ops = zcrypt_msgtype(MSGTYPE50_NAME,
612 MSGTYPE50_VARIANT_DEFAULT);
613 } else if (ap_test_bit(&aq->card->functions, AP_FUNC_COPRO)) {
614 zq = zcrypt_queue_alloc(CEX4C_MAX_MESSAGE_SIZE);
615 if (!zq)
616 return -ENOMEM;
617 zq->ops = zcrypt_msgtype(MSGTYPE06_NAME,
618 MSGTYPE06_VARIANT_DEFAULT);
619 } else if (ap_test_bit(&aq->card->functions, AP_FUNC_EP11)) {
620 zq = zcrypt_queue_alloc(CEX4C_MAX_MESSAGE_SIZE);
621 if (!zq)
622 return -ENOMEM;
623 zq->ops = zcrypt_msgtype(MSGTYPE06_NAME,
624 MSGTYPE06_VARIANT_EP11);
625 } else {
626 return -ENODEV;
627 }
628
629 zq->queue = aq;
630 zq->online = 1;
631 atomic_set(&zq->load, 0);
632 ap_queue_init_state(aq);
633 ap_queue_init_reply(aq, &zq->reply);
634 aq->request_timeout = CEX4_CLEANUP_TIME;
635 aq->private = zq;
636 rc = zcrypt_queue_register(zq);
637 if (rc) {
638 aq->private = NULL;
639 zcrypt_queue_free(zq);
640 return rc;
641 }
642
643 if (ap_test_bit(&aq->card->functions, AP_FUNC_COPRO)) {
644 rc = sysfs_create_group(&ap_dev->device.kobj,
645 &cca_queue_attr_grp);
646 if (rc) {
647 zcrypt_queue_unregister(zq);
648 aq->private = NULL;
649 zcrypt_queue_free(zq);
650 }
651 } else if (ap_test_bit(&aq->card->functions, AP_FUNC_EP11)) {
652 rc = sysfs_create_group(&ap_dev->device.kobj,
653 &ep11_queue_attr_grp);
654 if (rc) {
655 zcrypt_queue_unregister(zq);
656 aq->private = NULL;
657 zcrypt_queue_free(zq);
658 }
659 }
660
661 return rc;
662 }
663
664 /**
665 * This is called to remove the CEX4/CEX5/CEX6/CEX7 queue driver
666 * information if an AP queue device is removed.
667 */
zcrypt_cex4_queue_remove(struct ap_device * ap_dev)668 static void zcrypt_cex4_queue_remove(struct ap_device *ap_dev)
669 {
670 struct ap_queue *aq = to_ap_queue(&ap_dev->device);
671 struct zcrypt_queue *zq = aq->private;
672
673 if (ap_test_bit(&aq->card->functions, AP_FUNC_COPRO))
674 sysfs_remove_group(&ap_dev->device.kobj, &cca_queue_attr_grp);
675 else if (ap_test_bit(&aq->card->functions, AP_FUNC_EP11))
676 sysfs_remove_group(&ap_dev->device.kobj, &ep11_queue_attr_grp);
677 if (zq)
678 zcrypt_queue_unregister(zq);
679 }
680
681 static struct ap_driver zcrypt_cex4_queue_driver = {
682 .probe = zcrypt_cex4_queue_probe,
683 .remove = zcrypt_cex4_queue_remove,
684 .ids = zcrypt_cex4_queue_ids,
685 .flags = AP_DRIVER_FLAG_DEFAULT,
686 };
687
zcrypt_cex4_init(void)688 int __init zcrypt_cex4_init(void)
689 {
690 int rc;
691
692 rc = ap_driver_register(&zcrypt_cex4_card_driver,
693 THIS_MODULE, "cex4card");
694 if (rc)
695 return rc;
696
697 rc = ap_driver_register(&zcrypt_cex4_queue_driver,
698 THIS_MODULE, "cex4queue");
699 if (rc)
700 ap_driver_unregister(&zcrypt_cex4_card_driver);
701
702 return rc;
703 }
704
zcrypt_cex4_exit(void)705 void __exit zcrypt_cex4_exit(void)
706 {
707 ap_driver_unregister(&zcrypt_cex4_queue_driver);
708 ap_driver_unregister(&zcrypt_cex4_card_driver);
709 }
710
711 module_init(zcrypt_cex4_init);
712 module_exit(zcrypt_cex4_exit);
713