linux/drivers/s390/crypto/zcrypt_cex4.c
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   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/* 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
  38MODULE_AUTHOR("IBM Corporation");
  39MODULE_DESCRIPTION("CEX4/CEX5/CEX6/CEX7 Cryptographic Card device driver, " \
  40                   "Copyright IBM Corp. 2019");
  41MODULE_LICENSE("GPL");
  42
  43static 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        { /* end of list */ },
  53};
  54
  55MODULE_DEVICE_TABLE(ap, zcrypt_cex4_card_ids);
  56
  57static struct ap_device_id zcrypt_cex4_queue_ids[] = {
  58        { .dev_type = AP_DEVICE_TYPE_CEX4,
  59          .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
  60        { .dev_type = AP_DEVICE_TYPE_CEX5,
  61          .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
  62        { .dev_type = AP_DEVICE_TYPE_CEX6,
  63          .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
  64        { .dev_type = AP_DEVICE_TYPE_CEX7,
  65          .match_flags = AP_DEVICE_ID_MATCH_QUEUE_TYPE },
  66        { /* end of list */ },
  67};
  68
  69MODULE_DEVICE_TABLE(ap, zcrypt_cex4_queue_ids);
  70
  71/*
  72 * CCA card additional device attributes
  73 */
  74static ssize_t cca_serialnr_show(struct device *dev,
  75                                 struct device_attribute *attr,
  76                                 char *buf)
  77{
  78        struct cca_info ci;
  79        struct ap_card *ac = to_ap_card(dev);
  80        struct zcrypt_card *zc = ac->private;
  81
  82        memset(&ci, 0, sizeof(ci));
  83
  84        if (ap_domain_index >= 0)
  85                cca_get_info(ac->id, ap_domain_index, &ci, zc->online);
  86
  87        return scnprintf(buf, PAGE_SIZE, "%s\n", ci.serial);
  88}
  89
  90static struct device_attribute dev_attr_cca_serialnr =
  91        __ATTR(serialnr, 0444, cca_serialnr_show, NULL);
  92
  93static struct attribute *cca_card_attrs[] = {
  94        &dev_attr_cca_serialnr.attr,
  95        NULL,
  96};
  97
  98static const struct attribute_group cca_card_attr_grp = {
  99        .attrs = cca_card_attrs,
 100};
 101
 102 /*
 103  * CCA queue additional device attributes
 104  */
 105static ssize_t cca_mkvps_show(struct device *dev,
 106                              struct device_attribute *attr,
 107                              char *buf)
 108{
 109        int n = 0;
 110        struct cca_info ci;
 111        struct zcrypt_queue *zq = to_ap_queue(dev)->private;
 112        static const char * const cao_state[] = { "invalid", "valid" };
 113        static const char * const new_state[] = { "empty", "partial", "full" };
 114
 115        memset(&ci, 0, sizeof(ci));
 116
 117        cca_get_info(AP_QID_CARD(zq->queue->qid),
 118                     AP_QID_QUEUE(zq->queue->qid),
 119                     &ci, zq->online);
 120
 121        if (ci.new_aes_mk_state >= '1' && ci.new_aes_mk_state <= '3')
 122                n = scnprintf(buf, PAGE_SIZE, "AES NEW: %s 0x%016llx\n",
 123                              new_state[ci.new_aes_mk_state - '1'],
 124                              ci.new_aes_mkvp);
 125        else
 126                n = scnprintf(buf, PAGE_SIZE, "AES NEW: - -\n");
 127
 128        if (ci.cur_aes_mk_state >= '1' && ci.cur_aes_mk_state <= '2')
 129                n += scnprintf(buf + n, PAGE_SIZE - n,
 130                               "AES CUR: %s 0x%016llx\n",
 131                               cao_state[ci.cur_aes_mk_state - '1'],
 132                               ci.cur_aes_mkvp);
 133        else
 134                n += scnprintf(buf + n, PAGE_SIZE - n, "AES CUR: - -\n");
 135
 136        if (ci.old_aes_mk_state >= '1' && ci.old_aes_mk_state <= '2')
 137                n += scnprintf(buf + n, PAGE_SIZE - n,
 138                               "AES OLD: %s 0x%016llx\n",
 139                               cao_state[ci.old_aes_mk_state - '1'],
 140                               ci.old_aes_mkvp);
 141        else
 142                n += scnprintf(buf + n, PAGE_SIZE - n, "AES OLD: - -\n");
 143
 144        if (ci.new_apka_mk_state >= '1' && ci.new_apka_mk_state <= '3')
 145                n += scnprintf(buf + n, PAGE_SIZE - n,
 146                               "APKA NEW: %s 0x%016llx\n",
 147                               new_state[ci.new_apka_mk_state - '1'],
 148                               ci.new_apka_mkvp);
 149        else
 150                n += scnprintf(buf + n, PAGE_SIZE - n, "APKA NEW: - -\n");
 151
 152        if (ci.cur_apka_mk_state >= '1' && ci.cur_apka_mk_state <= '2')
 153                n += scnprintf(buf + n, PAGE_SIZE - n,
 154                               "APKA CUR: %s 0x%016llx\n",
 155                               cao_state[ci.cur_apka_mk_state - '1'],
 156                               ci.cur_apka_mkvp);
 157        else
 158                n += scnprintf(buf + n, PAGE_SIZE - n, "APKA CUR: - -\n");
 159
 160        if (ci.old_apka_mk_state >= '1' && ci.old_apka_mk_state <= '2')
 161                n += scnprintf(buf + n, PAGE_SIZE - n,
 162                               "APKA OLD: %s 0x%016llx\n",
 163                               cao_state[ci.old_apka_mk_state - '1'],
 164                               ci.old_apka_mkvp);
 165        else
 166                n += scnprintf(buf + n, PAGE_SIZE - n, "APKA OLD: - -\n");
 167
 168        return n;
 169}
 170
 171static struct device_attribute dev_attr_cca_mkvps =
 172        __ATTR(mkvps, 0444, cca_mkvps_show, NULL);
 173
 174static struct attribute *cca_queue_attrs[] = {
 175        &dev_attr_cca_mkvps.attr,
 176        NULL,
 177};
 178
 179static const struct attribute_group cca_queue_attr_grp = {
 180        .attrs = cca_queue_attrs,
 181};
 182
 183/*
 184 * EP11 card additional device attributes
 185 */
 186static ssize_t ep11_api_ordinalnr_show(struct device *dev,
 187                                       struct device_attribute *attr,
 188                                       char *buf)
 189{
 190        struct ep11_card_info ci;
 191        struct ap_card *ac = to_ap_card(dev);
 192        struct zcrypt_card *zc = ac->private;
 193
 194        memset(&ci, 0, sizeof(ci));
 195
 196        ep11_get_card_info(ac->id, &ci, zc->online);
 197
 198        if (ci.API_ord_nr > 0)
 199                return scnprintf(buf, PAGE_SIZE, "%u\n", ci.API_ord_nr);
 200        else
 201                return scnprintf(buf, PAGE_SIZE, "\n");
 202}
 203
 204static struct device_attribute dev_attr_ep11_api_ordinalnr =
 205        __ATTR(API_ordinalnr, 0444, ep11_api_ordinalnr_show, NULL);
 206
 207static ssize_t ep11_fw_version_show(struct device *dev,
 208                                    struct device_attribute *attr,
 209                                    char *buf)
 210{
 211        struct ep11_card_info ci;
 212        struct ap_card *ac = to_ap_card(dev);
 213        struct zcrypt_card *zc = ac->private;
 214
 215        memset(&ci, 0, sizeof(ci));
 216
 217        ep11_get_card_info(ac->id, &ci, zc->online);
 218
 219        if (ci.FW_version > 0)
 220                return scnprintf(buf, PAGE_SIZE, "%d.%d\n",
 221                                 (int)(ci.FW_version >> 8),
 222                                 (int)(ci.FW_version & 0xFF));
 223        else
 224                return scnprintf(buf, PAGE_SIZE, "\n");
 225}
 226
 227static struct device_attribute dev_attr_ep11_fw_version =
 228        __ATTR(FW_version, 0444, ep11_fw_version_show, NULL);
 229
 230static ssize_t ep11_serialnr_show(struct device *dev,
 231                                  struct device_attribute *attr,
 232                                  char *buf)
 233{
 234        struct ep11_card_info ci;
 235        struct ap_card *ac = to_ap_card(dev);
 236        struct zcrypt_card *zc = ac->private;
 237
 238        memset(&ci, 0, sizeof(ci));
 239
 240        ep11_get_card_info(ac->id, &ci, zc->online);
 241
 242        if (ci.serial[0])
 243                return scnprintf(buf, PAGE_SIZE, "%16.16s\n", ci.serial);
 244        else
 245                return scnprintf(buf, PAGE_SIZE, "\n");
 246}
 247
 248static struct device_attribute dev_attr_ep11_serialnr =
 249        __ATTR(serialnr, 0444, ep11_serialnr_show, NULL);
 250
 251static const struct {
 252        int         mode_bit;
 253        const char *mode_txt;
 254} ep11_op_modes[] = {
 255        { 0, "FIPS2009" },
 256        { 1, "BSI2009" },
 257        { 2, "FIPS2011" },
 258        { 3, "BSI2011" },
 259        { 6, "BSICC2017" },
 260        { 0, NULL }
 261};
 262
 263static ssize_t ep11_card_op_modes_show(struct device *dev,
 264                                       struct device_attribute *attr,
 265                                       char *buf)
 266{
 267        int i, n = 0;
 268        struct ep11_card_info ci;
 269        struct ap_card *ac = to_ap_card(dev);
 270        struct zcrypt_card *zc = ac->private;
 271
 272        memset(&ci, 0, sizeof(ci));
 273
 274        ep11_get_card_info(ac->id, &ci, zc->online);
 275
 276        for (i = 0; ep11_op_modes[i].mode_txt; i++) {
 277                if (ci.op_mode & (1ULL << ep11_op_modes[i].mode_bit)) {
 278                        if (n > 0)
 279                                buf[n++] = ' ';
 280                        n += scnprintf(buf + n, PAGE_SIZE - n,
 281                                       "%s", ep11_op_modes[i].mode_txt);
 282                }
 283        }
 284        n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
 285
 286        return n;
 287}
 288
 289static struct device_attribute dev_attr_ep11_card_op_modes =
 290        __ATTR(op_modes, 0444, ep11_card_op_modes_show, NULL);
 291
 292static struct attribute *ep11_card_attrs[] = {
 293        &dev_attr_ep11_api_ordinalnr.attr,
 294        &dev_attr_ep11_fw_version.attr,
 295        &dev_attr_ep11_serialnr.attr,
 296        &dev_attr_ep11_card_op_modes.attr,
 297        NULL,
 298};
 299
 300static const struct attribute_group ep11_card_attr_grp = {
 301        .attrs = ep11_card_attrs,
 302};
 303
 304/*
 305 * EP11 queue additional device attributes
 306 */
 307
 308static ssize_t ep11_mkvps_show(struct device *dev,
 309                               struct device_attribute *attr,
 310                               char *buf)
 311{
 312        int n = 0;
 313        struct ep11_domain_info di;
 314        struct zcrypt_queue *zq = to_ap_queue(dev)->private;
 315        static const char * const cwk_state[] = { "invalid", "valid" };
 316        static const char * const nwk_state[] = { "empty", "uncommitted",
 317                                                  "committed" };
 318
 319        memset(&di, 0, sizeof(di));
 320
 321        if (zq->online)
 322                ep11_get_domain_info(AP_QID_CARD(zq->queue->qid),
 323                                     AP_QID_QUEUE(zq->queue->qid),
 324                                     &di);
 325
 326        if (di.cur_wk_state == '0') {
 327                n = scnprintf(buf, PAGE_SIZE, "WK CUR: %s -\n",
 328                              cwk_state[di.cur_wk_state - '0']);
 329        } else if (di.cur_wk_state == '1') {
 330                n = scnprintf(buf, PAGE_SIZE, "WK CUR: %s 0x",
 331                              cwk_state[di.cur_wk_state - '0']);
 332                bin2hex(buf + n, di.cur_wkvp, sizeof(di.cur_wkvp));
 333                n += 2 * sizeof(di.cur_wkvp);
 334                n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
 335        } else
 336                n = scnprintf(buf, PAGE_SIZE, "WK CUR: - -\n");
 337
 338        if (di.new_wk_state == '0') {
 339                n += scnprintf(buf + n, PAGE_SIZE - n, "WK NEW: %s -\n",
 340                               nwk_state[di.new_wk_state - '0']);
 341        } else if (di.new_wk_state >= '1' && di.new_wk_state <= '2') {
 342                n += scnprintf(buf + n, PAGE_SIZE - n, "WK NEW: %s 0x",
 343                               nwk_state[di.new_wk_state - '0']);
 344                bin2hex(buf + n, di.new_wkvp, sizeof(di.new_wkvp));
 345                n += 2 * sizeof(di.new_wkvp);
 346                n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
 347        } else
 348                n += scnprintf(buf + n, PAGE_SIZE - n, "WK NEW: - -\n");
 349
 350        return n;
 351}
 352
 353static struct device_attribute dev_attr_ep11_mkvps =
 354        __ATTR(mkvps, 0444, ep11_mkvps_show, NULL);
 355
 356static ssize_t ep11_queue_op_modes_show(struct device *dev,
 357                                        struct device_attribute *attr,
 358                                        char *buf)
 359{
 360        int i, n = 0;
 361        struct ep11_domain_info di;
 362        struct zcrypt_queue *zq = to_ap_queue(dev)->private;
 363
 364        memset(&di, 0, sizeof(di));
 365
 366        if (zq->online)
 367                ep11_get_domain_info(AP_QID_CARD(zq->queue->qid),
 368                                     AP_QID_QUEUE(zq->queue->qid),
 369                                     &di);
 370
 371        for (i = 0; ep11_op_modes[i].mode_txt; i++) {
 372                if (di.op_mode & (1ULL << ep11_op_modes[i].mode_bit)) {
 373                        if (n > 0)
 374                                buf[n++] = ' ';
 375                        n += scnprintf(buf + n, PAGE_SIZE - n,
 376                                       "%s", ep11_op_modes[i].mode_txt);
 377                }
 378        }
 379        n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
 380
 381        return n;
 382}
 383
 384static struct device_attribute dev_attr_ep11_queue_op_modes =
 385        __ATTR(op_modes, 0444, ep11_queue_op_modes_show, NULL);
 386
 387static struct attribute *ep11_queue_attrs[] = {
 388        &dev_attr_ep11_mkvps.attr,
 389        &dev_attr_ep11_queue_op_modes.attr,
 390        NULL,
 391};
 392
 393static const struct attribute_group ep11_queue_attr_grp = {
 394        .attrs = ep11_queue_attrs,
 395};
 396
 397/**
 398 * Probe function for CEX4/CEX5/CEX6/CEX7 card device. It always
 399 * accepts the AP device since the bus_match already checked
 400 * the hardware type.
 401 * @ap_dev: pointer to the AP device.
 402 */
 403static int zcrypt_cex4_card_probe(struct ap_device *ap_dev)
 404{
 405        /*
 406         * Normalized speed ratings per crypto adapter
 407         * MEX_1k, MEX_2k, MEX_4k, CRT_1k, CRT_2k, CRT_4k, RNG, SECKEY
 408         */
 409        static const int CEX4A_SPEED_IDX[NUM_OPS] = {
 410                 14,  19, 249, 42, 228, 1458, 0, 0};
 411        static const int CEX5A_SPEED_IDX[NUM_OPS] = {
 412                  8,   9,  20, 18,  66,  458, 0, 0};
 413        static const int CEX6A_SPEED_IDX[NUM_OPS] = {
 414                  6,   9,  20, 17,  65,  438, 0, 0};
 415        static const int CEX7A_SPEED_IDX[NUM_OPS] = {
 416                  6,   8,  17, 15,  54,  362, 0, 0};
 417
 418        static const int CEX4C_SPEED_IDX[NUM_OPS] = {
 419                 59,  69, 308, 83, 278, 2204, 209, 40};
 420        static const int CEX5C_SPEED_IDX[] = {
 421                 24,  31,  50, 37,  90,  479,  27, 10};
 422        static const int CEX6C_SPEED_IDX[NUM_OPS] = {
 423                 16,  20,  32, 27,  77,  455,  24,  9};
 424        static const int CEX7C_SPEED_IDX[NUM_OPS] = {
 425                 14,  16,  26, 23,  64,  376,  23,  8};
 426
 427        static const int CEX4P_SPEED_IDX[NUM_OPS] = {
 428                  0,   0,   0,   0,   0,   0,   0,  50};
 429        static const int CEX5P_SPEED_IDX[NUM_OPS] = {
 430                  0,   0,   0,   0,   0,   0,   0,  10};
 431        static const int CEX6P_SPEED_IDX[NUM_OPS] = {
 432                  0,   0,   0,   0,   0,   0,   0,   9};
 433        static const int CEX7P_SPEED_IDX[NUM_OPS] = {
 434                  0,   0,   0,   0,   0,   0,   0,   8};
 435
 436        struct ap_card *ac = to_ap_card(&ap_dev->device);
 437        struct zcrypt_card *zc;
 438        int rc = 0;
 439
 440        zc = zcrypt_card_alloc();
 441        if (!zc)
 442                return -ENOMEM;
 443        zc->card = ac;
 444        ac->private = zc;
 445        if (ap_test_bit(&ac->functions, AP_FUNC_ACCEL)) {
 446                if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) {
 447                        zc->type_string = "CEX4A";
 448                        zc->user_space_type = ZCRYPT_CEX4;
 449                        zc->speed_rating = CEX4A_SPEED_IDX;
 450                } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX5) {
 451                        zc->type_string = "CEX5A";
 452                        zc->user_space_type = ZCRYPT_CEX5;
 453                        zc->speed_rating = CEX5A_SPEED_IDX;
 454                } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX6) {
 455                        zc->type_string = "CEX6A";
 456                        zc->user_space_type = ZCRYPT_CEX6;
 457                        zc->speed_rating = CEX6A_SPEED_IDX;
 458                } else {
 459                        zc->type_string = "CEX7A";
 460                        /* wrong user space type, just for compatibility
 461                         * with the ZCRYPT_STATUS_MASK ioctl.
 462                         */
 463                        zc->user_space_type = ZCRYPT_CEX6;
 464                        zc->speed_rating = CEX7A_SPEED_IDX;
 465                }
 466                zc->min_mod_size = CEX4A_MIN_MOD_SIZE;
 467                if (ap_test_bit(&ac->functions, AP_FUNC_MEX4K) &&
 468                    ap_test_bit(&ac->functions, AP_FUNC_CRT4K)) {
 469                        zc->max_mod_size = CEX4A_MAX_MOD_SIZE_4K;
 470                        zc->max_exp_bit_length =
 471                                CEX4A_MAX_MOD_SIZE_4K;
 472                } else {
 473                        zc->max_mod_size = CEX4A_MAX_MOD_SIZE_2K;
 474                        zc->max_exp_bit_length =
 475                                CEX4A_MAX_MOD_SIZE_2K;
 476                }
 477        } else if (ap_test_bit(&ac->functions, AP_FUNC_COPRO)) {
 478                if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) {
 479                        zc->type_string = "CEX4C";
 480                        /* wrong user space type, must be CEX4
 481                         * just keep it for cca compatibility
 482                         */
 483                        zc->user_space_type = ZCRYPT_CEX3C;
 484                        zc->speed_rating = CEX4C_SPEED_IDX;
 485                } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX5) {
 486                        zc->type_string = "CEX5C";
 487                        /* wrong user space type, must be CEX5
 488                         * just keep it for cca compatibility
 489                         */
 490                        zc->user_space_type = ZCRYPT_CEX3C;
 491                        zc->speed_rating = CEX5C_SPEED_IDX;
 492                } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX6) {
 493                        zc->type_string = "CEX6C";
 494                        /* wrong user space type, must be CEX6
 495                         * just keep it for cca compatibility
 496                         */
 497                        zc->user_space_type = ZCRYPT_CEX3C;
 498                        zc->speed_rating = CEX6C_SPEED_IDX;
 499                } else {
 500                        zc->type_string = "CEX7C";
 501                        /* wrong user space type, must be CEX7
 502                         * just keep it for cca compatibility
 503                         */
 504                        zc->user_space_type = ZCRYPT_CEX3C;
 505                        zc->speed_rating = CEX7C_SPEED_IDX;
 506                }
 507                zc->min_mod_size = CEX4C_MIN_MOD_SIZE;
 508                zc->max_mod_size = CEX4C_MAX_MOD_SIZE;
 509                zc->max_exp_bit_length = CEX4C_MAX_MOD_SIZE;
 510        } else if (ap_test_bit(&ac->functions, AP_FUNC_EP11)) {
 511                if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX4) {
 512                        zc->type_string = "CEX4P";
 513                        zc->user_space_type = ZCRYPT_CEX4;
 514                        zc->speed_rating = CEX4P_SPEED_IDX;
 515                } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX5) {
 516                        zc->type_string = "CEX5P";
 517                        zc->user_space_type = ZCRYPT_CEX5;
 518                        zc->speed_rating = CEX5P_SPEED_IDX;
 519                } else if (ac->ap_dev.device_type == AP_DEVICE_TYPE_CEX6) {
 520                        zc->type_string = "CEX6P";
 521                        zc->user_space_type = ZCRYPT_CEX6;
 522                        zc->speed_rating = CEX6P_SPEED_IDX;
 523                } else {
 524                        zc->type_string = "CEX7P";
 525                        /* wrong user space type, just for compatibility
 526                         * with the ZCRYPT_STATUS_MASK ioctl.
 527                         */
 528                        zc->user_space_type = ZCRYPT_CEX6;
 529                        zc->speed_rating = CEX7P_SPEED_IDX;
 530                }
 531                zc->min_mod_size = CEX4C_MIN_MOD_SIZE;
 532                zc->max_mod_size = CEX4C_MAX_MOD_SIZE;
 533                zc->max_exp_bit_length = CEX4C_MAX_MOD_SIZE;
 534        } else {
 535                zcrypt_card_free(zc);
 536                return -ENODEV;
 537        }
 538        zc->online = 1;
 539
 540        rc = zcrypt_card_register(zc);
 541        if (rc) {
 542                ac->private = NULL;
 543                zcrypt_card_free(zc);
 544                return rc;
 545        }
 546
 547        if (ap_test_bit(&ac->functions, AP_FUNC_COPRO)) {
 548                rc = sysfs_create_group(&ap_dev->device.kobj,
 549                                        &cca_card_attr_grp);
 550                if (rc) {
 551                        zcrypt_card_unregister(zc);
 552                        ac->private = NULL;
 553                        zcrypt_card_free(zc);
 554                }
 555        } else if (ap_test_bit(&ac->functions, AP_FUNC_EP11)) {
 556                rc = sysfs_create_group(&ap_dev->device.kobj,
 557                                        &ep11_card_attr_grp);
 558                if (rc) {
 559                        zcrypt_card_unregister(zc);
 560                        ac->private = NULL;
 561                        zcrypt_card_free(zc);
 562                }
 563        }
 564
 565        return rc;
 566}
 567
 568/**
 569 * This is called to remove the CEX4/CEX5/CEX6/CEX7 card driver
 570 * information if an AP card device is removed.
 571 */
 572static void zcrypt_cex4_card_remove(struct ap_device *ap_dev)
 573{
 574        struct ap_card *ac = to_ap_card(&ap_dev->device);
 575        struct zcrypt_card *zc = ac->private;
 576
 577        if (ap_test_bit(&ac->functions, AP_FUNC_COPRO))
 578                sysfs_remove_group(&ap_dev->device.kobj, &cca_card_attr_grp);
 579        else if (ap_test_bit(&ac->functions, AP_FUNC_EP11))
 580                sysfs_remove_group(&ap_dev->device.kobj, &ep11_card_attr_grp);
 581        if (zc)
 582                zcrypt_card_unregister(zc);
 583}
 584
 585static struct ap_driver zcrypt_cex4_card_driver = {
 586        .probe = zcrypt_cex4_card_probe,
 587        .remove = zcrypt_cex4_card_remove,
 588        .ids = zcrypt_cex4_card_ids,
 589        .flags = AP_DRIVER_FLAG_DEFAULT,
 590};
 591
 592/**
 593 * Probe function for CEX4/CEX5/CEX6/CEX7 queue device. It always
 594 * accepts the AP device since the bus_match already checked
 595 * the hardware type.
 596 * @ap_dev: pointer to the AP device.
 597 */
 598static int zcrypt_cex4_queue_probe(struct ap_device *ap_dev)
 599{
 600        struct ap_queue *aq = to_ap_queue(&ap_dev->device);
 601        struct zcrypt_queue *zq;
 602        int rc;
 603
 604        if (ap_test_bit(&aq->card->functions, AP_FUNC_ACCEL)) {
 605                zq = zcrypt_queue_alloc(aq->card->maxmsgsize);
 606                if (!zq)
 607                        return -ENOMEM;
 608                zq->ops = zcrypt_msgtype(MSGTYPE50_NAME,
 609                                         MSGTYPE50_VARIANT_DEFAULT);
 610        } else if (ap_test_bit(&aq->card->functions, AP_FUNC_COPRO)) {
 611                zq = zcrypt_queue_alloc(aq->card->maxmsgsize);
 612                if (!zq)
 613                        return -ENOMEM;
 614                zq->ops = zcrypt_msgtype(MSGTYPE06_NAME,
 615                                         MSGTYPE06_VARIANT_DEFAULT);
 616        } else if (ap_test_bit(&aq->card->functions, AP_FUNC_EP11)) {
 617                zq = zcrypt_queue_alloc(aq->card->maxmsgsize);
 618                if (!zq)
 619                        return -ENOMEM;
 620                zq->ops = zcrypt_msgtype(MSGTYPE06_NAME,
 621                                         MSGTYPE06_VARIANT_EP11);
 622        } else {
 623                return -ENODEV;
 624        }
 625
 626        zq->queue = aq;
 627        zq->online = 1;
 628        atomic_set(&zq->load, 0);
 629        ap_queue_init_state(aq);
 630        ap_queue_init_reply(aq, &zq->reply);
 631        aq->request_timeout = CEX4_CLEANUP_TIME;
 632        aq->private = zq;
 633        rc = zcrypt_queue_register(zq);
 634        if (rc) {
 635                aq->private = NULL;
 636                zcrypt_queue_free(zq);
 637                return rc;
 638        }
 639
 640        if (ap_test_bit(&aq->card->functions, AP_FUNC_COPRO)) {
 641                rc = sysfs_create_group(&ap_dev->device.kobj,
 642                                        &cca_queue_attr_grp);
 643                if (rc) {
 644                        zcrypt_queue_unregister(zq);
 645                        aq->private = NULL;
 646                        zcrypt_queue_free(zq);
 647                }
 648        } else if (ap_test_bit(&aq->card->functions, AP_FUNC_EP11)) {
 649                rc = sysfs_create_group(&ap_dev->device.kobj,
 650                                        &ep11_queue_attr_grp);
 651                if (rc) {
 652                        zcrypt_queue_unregister(zq);
 653                        aq->private = NULL;
 654                        zcrypt_queue_free(zq);
 655                }
 656        }
 657
 658        return rc;
 659}
 660
 661/**
 662 * This is called to remove the CEX4/CEX5/CEX6/CEX7 queue driver
 663 * information if an AP queue device is removed.
 664 */
 665static void zcrypt_cex4_queue_remove(struct ap_device *ap_dev)
 666{
 667        struct ap_queue *aq = to_ap_queue(&ap_dev->device);
 668        struct zcrypt_queue *zq = aq->private;
 669
 670        if (ap_test_bit(&aq->card->functions, AP_FUNC_COPRO))
 671                sysfs_remove_group(&ap_dev->device.kobj, &cca_queue_attr_grp);
 672        else if (ap_test_bit(&aq->card->functions, AP_FUNC_EP11))
 673                sysfs_remove_group(&ap_dev->device.kobj, &ep11_queue_attr_grp);
 674        if (zq)
 675                zcrypt_queue_unregister(zq);
 676}
 677
 678static struct ap_driver zcrypt_cex4_queue_driver = {
 679        .probe = zcrypt_cex4_queue_probe,
 680        .remove = zcrypt_cex4_queue_remove,
 681        .ids = zcrypt_cex4_queue_ids,
 682        .flags = AP_DRIVER_FLAG_DEFAULT,
 683};
 684
 685int __init zcrypt_cex4_init(void)
 686{
 687        int rc;
 688
 689        rc = ap_driver_register(&zcrypt_cex4_card_driver,
 690                                THIS_MODULE, "cex4card");
 691        if (rc)
 692                return rc;
 693
 694        rc = ap_driver_register(&zcrypt_cex4_queue_driver,
 695                                THIS_MODULE, "cex4queue");
 696        if (rc)
 697                ap_driver_unregister(&zcrypt_cex4_card_driver);
 698
 699        return rc;
 700}
 701
 702void __exit zcrypt_cex4_exit(void)
 703{
 704        ap_driver_unregister(&zcrypt_cex4_queue_driver);
 705        ap_driver_unregister(&zcrypt_cex4_card_driver);
 706}
 707
 708module_init(zcrypt_cex4_init);
 709module_exit(zcrypt_cex4_exit);
 710