1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright IBM Corp. 2012, 2022
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 /* Waiting time for requests to be processed.
32 * Currently there are some types of request which are not deterministic.
33 * But the maximum time limit managed by the stomper code is set to 60sec.
34 * Hence we have to wait at least that time period.
35 */
36 #define CEX4_CLEANUP_TIME (900 * HZ)
37
38 MODULE_AUTHOR("IBM Corporation");
39 MODULE_DESCRIPTION("CEX[45678] Cryptographic Card device driver, " \
40 "Copyright IBM Corp. 2022");
41 MODULE_LICENSE("GPL");
42
43 static struct ap_device_id zcrypt_cex4_card_ids[] = {
44 { .dev_type = AP_DEVICE_TYPE_CEX4,
45 .match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
46 { .dev_type = AP_DEVICE_TYPE_CEX5,
47 .match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
48 { .dev_type = AP_DEVICE_TYPE_CEX6,
49 .match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
50 { .dev_type = AP_DEVICE_TYPE_CEX7,
51 .match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
52 { .dev_type = AP_DEVICE_TYPE_CEX8,
53 .match_flags = AP_DEVICE_ID_MATCH_CARD_TYPE },
54 { /* end of list */ },
55 };
56
57 MODULE_DEVICE_TABLE(ap, zcrypt_cex4_card_ids);
58
59 static struct ap_device_id zcrypt_cex4_queue_ids[] = {
60 { .dev_type = AP_DEVICE_TYPE_CEX4,
61 .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
62 { .dev_type = AP_DEVICE_TYPE_CEX5,
63 .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
64 { .dev_type = AP_DEVICE_TYPE_CEX6,
65 .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
66 { .dev_type = AP_DEVICE_TYPE_CEX7,
67 .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
68 { .dev_type = AP_DEVICE_TYPE_CEX8,
69 .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
70 { /* end of list */ },
71 };
72
73 MODULE_DEVICE_TABLE(ap, zcrypt_cex4_queue_ids);
74
75 /*
76 * CCA card additional device attributes
77 */
cca_serialnr_show(struct device * dev,struct device_attribute * attr,char * buf)78 static ssize_t cca_serialnr_show(struct device *dev,
79 struct device_attribute *attr,
80 char *buf)
81 {
82 struct zcrypt_card *zc = dev_get_drvdata(dev);
83 struct cca_info ci;
84 struct ap_card *ac = to_ap_card(dev);
85
86 memset(&ci, 0, sizeof(ci));
87
88 if (ap_domain_index >= 0)
89 cca_get_info(ac->id, ap_domain_index, &ci, zc->online);
90
91 return sysfs_emit(buf, "%s\n", ci.serial);
92 }
93
94 static struct device_attribute dev_attr_cca_serialnr =
95 __ATTR(serialnr, 0444, cca_serialnr_show, NULL);
96
97 static struct attribute *cca_card_attrs[] = {
98 &dev_attr_cca_serialnr.attr,
99 NULL,
100 };
101
102 static const struct attribute_group cca_card_attr_grp = {
103 .attrs = cca_card_attrs,
104 };
105
106 /*
107 * CCA queue additional device attributes
108 */
cca_mkvps_show(struct device * dev,struct device_attribute * attr,char * buf)109 static ssize_t cca_mkvps_show(struct device *dev,
110 struct device_attribute *attr,
111 char *buf)
112 {
113 struct zcrypt_queue *zq = dev_get_drvdata(dev);
114 int n = 0;
115 struct cca_info ci;
116 static const char * const cao_state[] = { "invalid", "valid" };
117 static const char * const new_state[] = { "empty", "partial", "full" };
118
119 memset(&ci, 0, sizeof(ci));
120
121 cca_get_info(AP_QID_CARD(zq->queue->qid),
122 AP_QID_QUEUE(zq->queue->qid),
123 &ci, zq->online);
124
125 if (ci.new_aes_mk_state >= '1' && ci.new_aes_mk_state <= '3')
126 n += sysfs_emit_at(buf, n, "AES NEW: %s 0x%016llx\n",
127 new_state[ci.new_aes_mk_state - '1'],
128 ci.new_aes_mkvp);
129 else
130 n += sysfs_emit_at(buf, n, "AES NEW: - -\n");
131
132 if (ci.cur_aes_mk_state >= '1' && ci.cur_aes_mk_state <= '2')
133 n += sysfs_emit_at(buf, n, "AES CUR: %s 0x%016llx\n",
134 cao_state[ci.cur_aes_mk_state - '1'],
135 ci.cur_aes_mkvp);
136 else
137 n += sysfs_emit_at(buf, n, "AES CUR: - -\n");
138
139 if (ci.old_aes_mk_state >= '1' && ci.old_aes_mk_state <= '2')
140 n += sysfs_emit_at(buf, n, "AES OLD: %s 0x%016llx\n",
141 cao_state[ci.old_aes_mk_state - '1'],
142 ci.old_aes_mkvp);
143 else
144 n += sysfs_emit_at(buf, n, "AES OLD: - -\n");
145
146 if (ci.new_apka_mk_state >= '1' && ci.new_apka_mk_state <= '3')
147 n += sysfs_emit_at(buf, n, "APKA NEW: %s 0x%016llx\n",
148 new_state[ci.new_apka_mk_state - '1'],
149 ci.new_apka_mkvp);
150 else
151 n += sysfs_emit_at(buf, n, "APKA NEW: - -\n");
152
153 if (ci.cur_apka_mk_state >= '1' && ci.cur_apka_mk_state <= '2')
154 n += sysfs_emit_at(buf, n, "APKA CUR: %s 0x%016llx\n",
155 cao_state[ci.cur_apka_mk_state - '1'],
156 ci.cur_apka_mkvp);
157 else
158 n += sysfs_emit_at(buf, n, "APKA CUR: - -\n");
159
160 if (ci.old_apka_mk_state >= '1' && ci.old_apka_mk_state <= '2')
161 n += sysfs_emit_at(buf, n, "APKA OLD: %s 0x%016llx\n",
162 cao_state[ci.old_apka_mk_state - '1'],
163 ci.old_apka_mkvp);
164 else
165 n += sysfs_emit_at(buf, n, "APKA OLD: - -\n");
166
167 if (ci.new_asym_mk_state >= '1' && ci.new_asym_mk_state <= '3')
168 n += sysfs_emit_at(buf, n, "ASYM NEW: %s 0x%016llx%016llx\n",
169 new_state[ci.new_asym_mk_state - '1'],
170 *((u64 *)(ci.new_asym_mkvp)),
171 *((u64 *)(ci.new_asym_mkvp + sizeof(u64))));
172 else
173 n += sysfs_emit_at(buf, n, "ASYM NEW: - -\n");
174
175 if (ci.cur_asym_mk_state >= '1' && ci.cur_asym_mk_state <= '2')
176 n += sysfs_emit_at(buf, n, "ASYM CUR: %s 0x%016llx%016llx\n",
177 cao_state[ci.cur_asym_mk_state - '1'],
178 *((u64 *)(ci.cur_asym_mkvp)),
179 *((u64 *)(ci.cur_asym_mkvp + sizeof(u64))));
180 else
181 n += sysfs_emit_at(buf, n, "ASYM CUR: - -\n");
182
183 if (ci.old_asym_mk_state >= '1' && ci.old_asym_mk_state <= '2')
184 n += sysfs_emit_at(buf, n, "ASYM OLD: %s 0x%016llx%016llx\n",
185 cao_state[ci.old_asym_mk_state - '1'],
186 *((u64 *)(ci.old_asym_mkvp)),
187 *((u64 *)(ci.old_asym_mkvp + sizeof(u64))));
188 else
189 n += sysfs_emit_at(buf, n, "ASYM OLD: - -\n");
190
191 return n;
192 }
193
194 static struct device_attribute dev_attr_cca_mkvps =
195 __ATTR(mkvps, 0444, cca_mkvps_show, NULL);
196
197 static struct attribute *cca_queue_attrs[] = {
198 &dev_attr_cca_mkvps.attr,
199 NULL,
200 };
201
202 static const struct attribute_group cca_queue_attr_grp = {
203 .attrs = cca_queue_attrs,
204 };
205
206 /*
207 * EP11 card additional device attributes
208 */
ep11_api_ordinalnr_show(struct device * dev,struct device_attribute * attr,char * buf)209 static ssize_t ep11_api_ordinalnr_show(struct device *dev,
210 struct device_attribute *attr,
211 char *buf)
212 {
213 struct zcrypt_card *zc = dev_get_drvdata(dev);
214 struct ep11_card_info ci;
215 struct ap_card *ac = to_ap_card(dev);
216
217 memset(&ci, 0, sizeof(ci));
218
219 ep11_get_card_info(ac->id, &ci, zc->online);
220
221 if (ci.API_ord_nr > 0)
222 return sysfs_emit(buf, "%u\n", ci.API_ord_nr);
223 else
224 return sysfs_emit(buf, "\n");
225 }
226
227 static struct device_attribute dev_attr_ep11_api_ordinalnr =
228 __ATTR(API_ordinalnr, 0444, ep11_api_ordinalnr_show, NULL);
229
ep11_fw_version_show(struct device * dev,struct device_attribute * attr,char * buf)230 static ssize_t ep11_fw_version_show(struct device *dev,
231 struct device_attribute *attr,
232 char *buf)
233 {
234 struct zcrypt_card *zc = dev_get_drvdata(dev);
235 struct ep11_card_info ci;
236 struct ap_card *ac = to_ap_card(dev);
237
238 memset(&ci, 0, sizeof(ci));
239
240 ep11_get_card_info(ac->id, &ci, zc->online);
241
242 if (ci.FW_version > 0)
243 return sysfs_emit(buf, "%d.%d\n",
244 (int)(ci.FW_version >> 8),
245 (int)(ci.FW_version & 0xFF));
246 else
247 return sysfs_emit(buf, "\n");
248 }
249
250 static struct device_attribute dev_attr_ep11_fw_version =
251 __ATTR(FW_version, 0444, ep11_fw_version_show, NULL);
252
ep11_serialnr_show(struct device * dev,struct device_attribute * attr,char * buf)253 static ssize_t ep11_serialnr_show(struct device *dev,
254 struct device_attribute *attr,
255 char *buf)
256 {
257 struct zcrypt_card *zc = dev_get_drvdata(dev);
258 struct ep11_card_info ci;
259 struct ap_card *ac = to_ap_card(dev);
260
261 memset(&ci, 0, sizeof(ci));
262
263 ep11_get_card_info(ac->id, &ci, zc->online);
264
265 if (ci.serial[0])
266 return sysfs_emit(buf, "%16.16s\n", ci.serial);
267 else
268 return sysfs_emit(buf, "\n");
269 }
270
271 static struct device_attribute dev_attr_ep11_serialnr =
272 __ATTR(serialnr, 0444, ep11_serialnr_show, NULL);
273
274 static const struct {
275 int mode_bit;
276 const char *mode_txt;
277 } ep11_op_modes[] = {
278 { 0, "FIPS2009" },
279 { 1, "BSI2009" },
280 { 2, "FIPS2011" },
281 { 3, "BSI2011" },
282 { 4, "SIGG-IMPORT" },
283 { 5, "SIGG" },
284 { 6, "BSICC2017" },
285 { 7, "FIPS2021" },
286 { 8, "FIPS2024" },
287 { 0, NULL }
288 };
289
ep11_card_op_modes_show(struct device * dev,struct device_attribute * attr,char * buf)290 static ssize_t ep11_card_op_modes_show(struct device *dev,
291 struct device_attribute *attr,
292 char *buf)
293 {
294 struct zcrypt_card *zc = dev_get_drvdata(dev);
295 int i, n = 0;
296 struct ep11_card_info ci;
297 struct ap_card *ac = to_ap_card(dev);
298
299 memset(&ci, 0, sizeof(ci));
300
301 ep11_get_card_info(ac->id, &ci, zc->online);
302
303 for (i = 0; ep11_op_modes[i].mode_txt; i++) {
304 if (ci.op_mode & (1ULL << ep11_op_modes[i].mode_bit)) {
305 if (n > 0)
306 buf[n++] = ' ';
307 n += sysfs_emit_at(buf, n, "%s",
308 ep11_op_modes[i].mode_txt);
309 }
310 }
311 n += sysfs_emit_at(buf, n, "\n");
312
313 return n;
314 }
315
316 static struct device_attribute dev_attr_ep11_card_op_modes =
317 __ATTR(op_modes, 0444, ep11_card_op_modes_show, NULL);
318
319 static struct attribute *ep11_card_attrs[] = {
320 &dev_attr_ep11_api_ordinalnr.attr,
321 &dev_attr_ep11_fw_version.attr,
322 &dev_attr_ep11_serialnr.attr,
323 &dev_attr_ep11_card_op_modes.attr,
324 NULL,
325 };
326
327 static const struct attribute_group ep11_card_attr_grp = {
328 .attrs = ep11_card_attrs,
329 };
330
331 /*
332 * EP11 queue additional device attributes
333 */
334
ep11_mkvps_show(struct device * dev,struct device_attribute * attr,char * buf)335 static ssize_t ep11_mkvps_show(struct device *dev,
336 struct device_attribute *attr,
337 char *buf)
338 {
339 struct zcrypt_queue *zq = dev_get_drvdata(dev);
340 int n = 0;
341 struct ep11_domain_info di;
342 static const char * const cwk_state[] = { "invalid", "valid" };
343 static const char * const nwk_state[] = { "empty", "uncommitted",
344 "committed" };
345
346 memset(&di, 0, sizeof(di));
347
348 if (zq->online)
349 ep11_get_domain_info(AP_QID_CARD(zq->queue->qid),
350 AP_QID_QUEUE(zq->queue->qid),
351 &di);
352
353 if (di.cur_wk_state == '0') {
354 n = sysfs_emit(buf, "WK CUR: %s -\n",
355 cwk_state[di.cur_wk_state - '0']);
356 } else if (di.cur_wk_state == '1') {
357 n = sysfs_emit(buf, "WK CUR: %s 0x",
358 cwk_state[di.cur_wk_state - '0']);
359 bin2hex(buf + n, di.cur_wkvp, sizeof(di.cur_wkvp));
360 n += 2 * sizeof(di.cur_wkvp);
361 n += sysfs_emit_at(buf, n, "\n");
362 } else {
363 n = sysfs_emit(buf, "WK CUR: - -\n");
364 }
365
366 if (di.new_wk_state == '0') {
367 n += sysfs_emit_at(buf, n, "WK NEW: %s -\n",
368 nwk_state[di.new_wk_state - '0']);
369 } else if (di.new_wk_state >= '1' && di.new_wk_state <= '2') {
370 n += sysfs_emit_at(buf, n, "WK NEW: %s 0x",
371 nwk_state[di.new_wk_state - '0']);
372 bin2hex(buf + n, di.new_wkvp, sizeof(di.new_wkvp));
373 n += 2 * sizeof(di.new_wkvp);
374 n += sysfs_emit_at(buf, n, "\n");
375 } else {
376 n += sysfs_emit_at(buf, n, "WK NEW: - -\n");
377 }
378
379 return n;
380 }
381
382 static struct device_attribute dev_attr_ep11_mkvps =
383 __ATTR(mkvps, 0444, ep11_mkvps_show, NULL);
384
ep11_queue_op_modes_show(struct device * dev,struct device_attribute * attr,char * buf)385 static ssize_t ep11_queue_op_modes_show(struct device *dev,
386 struct device_attribute *attr,
387 char *buf)
388 {
389 struct zcrypt_queue *zq = dev_get_drvdata(dev);
390 int i, n = 0;
391 struct ep11_domain_info di;
392
393 memset(&di, 0, sizeof(di));
394
395 if (zq->online)
396 ep11_get_domain_info(AP_QID_CARD(zq->queue->qid),
397 AP_QID_QUEUE(zq->queue->qid),
398 &di);
399
400 for (i = 0; ep11_op_modes[i].mode_txt; i++) {
401 if (di.op_mode & (1ULL << ep11_op_modes[i].mode_bit)) {
402 if (n > 0)
403 buf[n++] = ' ';
404 n += sysfs_emit_at(buf, n, "%s",
405 ep11_op_modes[i].mode_txt);
406 }
407 }
408 n += sysfs_emit_at(buf, n, "\n");
409
410 return n;
411 }
412
413 static struct device_attribute dev_attr_ep11_queue_op_modes =
414 __ATTR(op_modes, 0444, ep11_queue_op_modes_show, NULL);
415
416 static struct attribute *ep11_queue_attrs[] = {
417 &dev_attr_ep11_mkvps.attr,
418 &dev_attr_ep11_queue_op_modes.attr,
419 NULL,
420 };
421
422 static const struct attribute_group ep11_queue_attr_grp = {
423 .attrs = ep11_queue_attrs,
424 };
425
426 /*
427 * Probe function for CEX[45678] card device. It always
428 * accepts the AP device since the bus_match already checked
429 * the hardware type.
430 * @ap_dev: pointer to the AP device.
431 */
zcrypt_cex4_card_probe(struct ap_device * ap_dev)432 static int zcrypt_cex4_card_probe(struct ap_device *ap_dev)
433 {
434 /*
435 * Normalized speed ratings per crypto adapter
436 * MEX_1k, MEX_2k, MEX_4k, CRT_1k, CRT_2k, CRT_4k, RNG, SECKEY
437 */
438 static const int CEX4A_SPEED_IDX[NUM_OPS] = {
439 14, 19, 249, 42, 228, 1458, 0, 0};
440 static const int CEX5A_SPEED_IDX[NUM_OPS] = {
441 8, 9, 20, 18, 66, 458, 0, 0};
442 static const int CEX6A_SPEED_IDX[NUM_OPS] = {
443 6, 9, 20, 17, 65, 438, 0, 0};
444 static const int CEX7A_SPEED_IDX[NUM_OPS] = {
445 6, 8, 17, 15, 54, 362, 0, 0};
446 static const int CEX8A_SPEED_IDX[NUM_OPS] = {
447 6, 8, 17, 15, 54, 362, 0, 0};
448
449 static const int CEX4C_SPEED_IDX[NUM_OPS] = {
450 59, 69, 308, 83, 278, 2204, 209, 40};
451 static const int CEX5C_SPEED_IDX[] = {
452 24, 31, 50, 37, 90, 479, 27, 10};
453 static const int CEX6C_SPEED_IDX[NUM_OPS] = {
454 16, 20, 32, 27, 77, 455, 24, 9};
455 static const int CEX7C_SPEED_IDX[NUM_OPS] = {
456 14, 16, 26, 23, 64, 376, 23, 8};
457 static const int CEX8C_SPEED_IDX[NUM_OPS] = {
458 14, 16, 26, 23, 64, 376, 23, 8};
459
460 static const int CEX4P_SPEED_IDX[NUM_OPS] = {
461 0, 0, 0, 0, 0, 0, 0, 50};
462 static const int CEX5P_SPEED_IDX[NUM_OPS] = {
463 0, 0, 0, 0, 0, 0, 0, 10};
464 static const int CEX6P_SPEED_IDX[NUM_OPS] = {
465 0, 0, 0, 0, 0, 0, 0, 9};
466 static const int CEX7P_SPEED_IDX[NUM_OPS] = {
467 0, 0, 0, 0, 0, 0, 0, 8};
468 static const int CEX8P_SPEED_IDX[NUM_OPS] = {
469 0, 0, 0, 0, 0, 0, 0, 8};
470
471 struct ap_card *ac = to_ap_card(&ap_dev->device);
472 struct zcrypt_card *zc;
473 int rc = 0;
474
475 zc = zcrypt_card_alloc();
476 if (!zc)
477 return -ENOMEM;
478 zc->card = ac;
479 dev_set_drvdata(&ap_dev->device, zc);
480 if (ac->hwinfo.accel) {
481 if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) {
482 zc->type_string = "CEX4A";
483 zc->user_space_type = ZCRYPT_CEX4;
484 zc->speed_rating = CEX4A_SPEED_IDX;
485 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX5) {
486 zc->type_string = "CEX5A";
487 zc->user_space_type = ZCRYPT_CEX5;
488 zc->speed_rating = CEX5A_SPEED_IDX;
489 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX6) {
490 zc->type_string = "CEX6A";
491 zc->user_space_type = ZCRYPT_CEX6;
492 zc->speed_rating = CEX6A_SPEED_IDX;
493 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX7) {
494 zc->type_string = "CEX7A";
495 zc->speed_rating = CEX7A_SPEED_IDX;
496 /* wrong user space type, just for compatibility
497 * with the ZCRYPT_STATUS_MASK ioctl.
498 */
499 zc->user_space_type = ZCRYPT_CEX6;
500 } else {
501 zc->type_string = "CEX8A";
502 zc->speed_rating = CEX8A_SPEED_IDX;
503 /* wrong user space type, just for compatibility
504 * with the ZCRYPT_STATUS_MASK ioctl.
505 */
506 zc->user_space_type = ZCRYPT_CEX6;
507 }
508 zc->min_mod_size = CEX4A_MIN_MOD_SIZE;
509 if (ac->hwinfo.mex4k && ac->hwinfo.crt4k) {
510 zc->max_mod_size = CEX4A_MAX_MOD_SIZE_4K;
511 zc->max_exp_bit_length =
512 CEX4A_MAX_MOD_SIZE_4K;
513 } else {
514 zc->max_mod_size = CEX4A_MAX_MOD_SIZE_2K;
515 zc->max_exp_bit_length =
516 CEX4A_MAX_MOD_SIZE_2K;
517 }
518 } else if (ac->hwinfo.cca) {
519 if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) {
520 zc->type_string = "CEX4C";
521 zc->speed_rating = CEX4C_SPEED_IDX;
522 /* wrong user space type, must be CEX3C
523 * just keep it for cca compatibility
524 */
525 zc->user_space_type = ZCRYPT_CEX3C;
526 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX5) {
527 zc->type_string = "CEX5C";
528 zc->speed_rating = CEX5C_SPEED_IDX;
529 /* wrong user space type, must be CEX3C
530 * just keep it for cca compatibility
531 */
532 zc->user_space_type = ZCRYPT_CEX3C;
533 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX6) {
534 zc->type_string = "CEX6C";
535 zc->speed_rating = CEX6C_SPEED_IDX;
536 /* wrong user space type, must be CEX3C
537 * just keep it for cca compatibility
538 */
539 zc->user_space_type = ZCRYPT_CEX3C;
540 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX7) {
541 zc->type_string = "CEX7C";
542 zc->speed_rating = CEX7C_SPEED_IDX;
543 /* wrong user space type, must be CEX3C
544 * just keep it for cca compatibility
545 */
546 zc->user_space_type = ZCRYPT_CEX3C;
547 } else {
548 zc->type_string = "CEX8C";
549 zc->speed_rating = CEX8C_SPEED_IDX;
550 /* wrong user space type, must be CEX3C
551 * just keep it for cca compatibility
552 */
553 zc->user_space_type = ZCRYPT_CEX3C;
554 }
555 zc->min_mod_size = CEX4C_MIN_MOD_SIZE;
556 zc->max_mod_size = CEX4C_MAX_MOD_SIZE;
557 zc->max_exp_bit_length = CEX4C_MAX_MOD_SIZE;
558 } else if (ac->hwinfo.ep11) {
559 if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) {
560 zc->type_string = "CEX4P";
561 zc->user_space_type = ZCRYPT_CEX4;
562 zc->speed_rating = CEX4P_SPEED_IDX;
563 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX5) {
564 zc->type_string = "CEX5P";
565 zc->user_space_type = ZCRYPT_CEX5;
566 zc->speed_rating = CEX5P_SPEED_IDX;
567 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX6) {
568 zc->type_string = "CEX6P";
569 zc->user_space_type = ZCRYPT_CEX6;
570 zc->speed_rating = CEX6P_SPEED_IDX;
571 } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX7) {
572 zc->type_string = "CEX7P";
573 zc->speed_rating = CEX7P_SPEED_IDX;
574 /* wrong user space type, just for compatibility
575 * with the ZCRYPT_STATUS_MASK ioctl.
576 */
577 zc->user_space_type = ZCRYPT_CEX6;
578 } else {
579 zc->type_string = "CEX8P";
580 zc->speed_rating = CEX8P_SPEED_IDX;
581 /* wrong user space type, just for compatibility
582 * with the ZCRYPT_STATUS_MASK ioctl.
583 */
584 zc->user_space_type = ZCRYPT_CEX6;
585 }
586 zc->min_mod_size = CEX4C_MIN_MOD_SIZE;
587 zc->max_mod_size = CEX4C_MAX_MOD_SIZE;
588 zc->max_exp_bit_length = CEX4C_MAX_MOD_SIZE;
589 } else {
590 zcrypt_card_free(zc);
591 return -ENODEV;
592 }
593 zc->online = 1;
594
595 rc = zcrypt_card_register(zc);
596 if (rc) {
597 zcrypt_card_free(zc);
598 return rc;
599 }
600
601 if (ac->hwinfo.cca) {
602 rc = sysfs_create_group(&ap_dev->device.kobj,
603 &cca_card_attr_grp);
604 if (rc) {
605 zcrypt_card_unregister(zc);
606 zcrypt_card_free(zc);
607 }
608 } else if (ac->hwinfo.ep11) {
609 rc = sysfs_create_group(&ap_dev->device.kobj,
610 &ep11_card_attr_grp);
611 if (rc) {
612 zcrypt_card_unregister(zc);
613 zcrypt_card_free(zc);
614 }
615 }
616
617 return rc;
618 }
619
620 /*
621 * This is called to remove the CEX[45678] card driver
622 * information if an AP card device is removed.
623 */
zcrypt_cex4_card_remove(struct ap_device * ap_dev)624 static void zcrypt_cex4_card_remove(struct ap_device *ap_dev)
625 {
626 struct zcrypt_card *zc = dev_get_drvdata(&ap_dev->device);
627 struct ap_card *ac = to_ap_card(&ap_dev->device);
628
629 if (ac->hwinfo.cca)
630 sysfs_remove_group(&ap_dev->device.kobj, &cca_card_attr_grp);
631 else if (ac->hwinfo.ep11)
632 sysfs_remove_group(&ap_dev->device.kobj, &ep11_card_attr_grp);
633
634 zcrypt_card_unregister(zc);
635 }
636
637 static struct ap_driver zcrypt_cex4_card_driver = {
638 .probe = zcrypt_cex4_card_probe,
639 .remove = zcrypt_cex4_card_remove,
640 .ids = zcrypt_cex4_card_ids,
641 .flags = AP_DRIVER_FLAG_DEFAULT,
642 };
643
644 /*
645 * Probe function for CEX[45678] queue device. It always
646 * accepts the AP device since the bus_match already checked
647 * the hardware type.
648 * @ap_dev: pointer to the AP device.
649 */
zcrypt_cex4_queue_probe(struct ap_device * ap_dev)650 static int zcrypt_cex4_queue_probe(struct ap_device *ap_dev)
651 {
652 struct ap_queue *aq = to_ap_queue(&ap_dev->device);
653 struct zcrypt_queue *zq;
654 int rc;
655
656 if (aq->card->hwinfo.accel) {
657 zq = zcrypt_queue_alloc(aq->card->maxmsgsize);
658 if (!zq)
659 return -ENOMEM;
660 zq->ops = zcrypt_msgtype(MSGTYPE50_NAME,
661 MSGTYPE50_VARIANT_DEFAULT);
662 } else if (aq->card->hwinfo.cca) {
663 zq = zcrypt_queue_alloc(aq->card->maxmsgsize);
664 if (!zq)
665 return -ENOMEM;
666 zq->ops = zcrypt_msgtype(MSGTYPE06_NAME,
667 MSGTYPE06_VARIANT_DEFAULT);
668 } else if (aq->card->hwinfo.ep11) {
669 zq = zcrypt_queue_alloc(aq->card->maxmsgsize);
670 if (!zq)
671 return -ENOMEM;
672 zq->ops = zcrypt_msgtype(MSGTYPE06_NAME,
673 MSGTYPE06_VARIANT_EP11);
674 } else {
675 return -ENODEV;
676 }
677
678 zq->queue = aq;
679 zq->online = 1;
680 atomic_set(&zq->load, 0);
681 ap_queue_init_state(aq);
682 ap_queue_init_reply(aq, &zq->reply);
683 aq->request_timeout = CEX4_CLEANUP_TIME;
684 dev_set_drvdata(&ap_dev->device, zq);
685 rc = zcrypt_queue_register(zq);
686 if (rc) {
687 zcrypt_queue_free(zq);
688 return rc;
689 }
690
691 if (aq->card->hwinfo.cca) {
692 rc = sysfs_create_group(&ap_dev->device.kobj,
693 &cca_queue_attr_grp);
694 if (rc) {
695 zcrypt_queue_unregister(zq);
696 zcrypt_queue_free(zq);
697 }
698 } else if (aq->card->hwinfo.ep11) {
699 rc = sysfs_create_group(&ap_dev->device.kobj,
700 &ep11_queue_attr_grp);
701 if (rc) {
702 zcrypt_queue_unregister(zq);
703 zcrypt_queue_free(zq);
704 }
705 }
706
707 return rc;
708 }
709
710 /*
711 * This is called to remove the CEX[45678] queue driver
712 * information if an AP queue device is removed.
713 */
zcrypt_cex4_queue_remove(struct ap_device * ap_dev)714 static void zcrypt_cex4_queue_remove(struct ap_device *ap_dev)
715 {
716 struct zcrypt_queue *zq = dev_get_drvdata(&ap_dev->device);
717 struct ap_queue *aq = to_ap_queue(&ap_dev->device);
718
719 if (aq->card->hwinfo.cca)
720 sysfs_remove_group(&ap_dev->device.kobj, &cca_queue_attr_grp);
721 else if (aq->card->hwinfo.ep11)
722 sysfs_remove_group(&ap_dev->device.kobj, &ep11_queue_attr_grp);
723
724 zcrypt_queue_unregister(zq);
725 }
726
727 static struct ap_driver zcrypt_cex4_queue_driver = {
728 .probe = zcrypt_cex4_queue_probe,
729 .remove = zcrypt_cex4_queue_remove,
730 .ids = zcrypt_cex4_queue_ids,
731 .flags = AP_DRIVER_FLAG_DEFAULT,
732 };
733
zcrypt_cex4_init(void)734 int __init zcrypt_cex4_init(void)
735 {
736 int rc;
737
738 rc = ap_driver_register(&zcrypt_cex4_card_driver,
739 THIS_MODULE, "cex4card");
740 if (rc)
741 return rc;
742
743 rc = ap_driver_register(&zcrypt_cex4_queue_driver,
744 THIS_MODULE, "cex4queue");
745 if (rc)
746 ap_driver_unregister(&zcrypt_cex4_card_driver);
747
748 return rc;
749 }
750
zcrypt_cex4_exit(void)751 void __exit zcrypt_cex4_exit(void)
752 {
753 ap_driver_unregister(&zcrypt_cex4_queue_driver);
754 ap_driver_unregister(&zcrypt_cex4_card_driver);
755 }
756
757 module_init(zcrypt_cex4_init);
758 module_exit(zcrypt_cex4_exit);
759