drivers/crypto/qat/qat_asym_pmd.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2019 Intel Corporation
   3  */
   4
   5 #include <rte_cryptodev_pmd.h>
   6
   7 #include "qat_logs.h"
   8
   9 #include "qat_asym.h"
  10 #include "qat_asym_pmd.h"
  11 #include "qat_sym_capabilities.h"
  12 #include "qat_asym_capabilities.h"
  13
  14 uint8_t qat_asym_driver_id;
  15
  16 static const struct rte_cryptodev_capabilities qat_gen1_asym_capabilities[] = {
  17         QAT_BASE_GEN1_ASYM_CAPABILITIES,
  18         RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
  19 };
  20
  21 static int qat_asym_qp_release(struct rte_cryptodev *dev,
  22                                uint16_t queue_pair_id);
  23
  24 static int qat_asym_dev_config(__rte_unused struct rte_cryptodev *dev,
  25                                __rte_unused struct rte_cryptodev_config *config)
  26 {
  27         return 0;
  28 }
  29
  30 static int qat_asym_dev_start(__rte_unused struct rte_cryptodev *dev)
  31 {
  32         return 0;
  33 }
  34
  35 static void qat_asym_dev_stop(__rte_unused struct rte_cryptodev *dev)
  36 {
  37
  38 }
  39
  40 static int qat_asym_dev_close(struct rte_cryptodev *dev)
  41 {
  42         int i, ret;
  43
  44         for (i = 0; i < dev->data->nb_queue_pairs; i++) {
  45                 ret = qat_asym_qp_release(dev, i);
  46                 if (ret < 0)
  47                         return ret;
  48         }
  49
  50         return 0;
  51 }
  52
  53 static void qat_asym_dev_info_get(struct rte_cryptodev *dev,
  54                                   struct rte_cryptodev_info *info)
  55 {
  56         struct qat_asym_dev_private *internals = dev->data->dev_private;
  57         struct qat_pci_device *qat_dev = internals->qat_dev;
  58
  59         if (info != NULL) {
  60                 info->max_nb_queue_pairs = qat_qps_per_service(qat_dev,
  61                                                         QAT_SERVICE_ASYMMETRIC);
  62                 info->feature_flags = dev->feature_flags;
  63                 info->capabilities = internals->qat_dev_capabilities;
  64                 info->driver_id = qat_asym_driver_id;
  65                 /* No limit of number of sessions */
  66                 info->sym.max_nb_sessions = 0;
  67         }
  68 }
  69
  70 static void qat_asym_stats_get(struct rte_cryptodev *dev,
  71                                struct rte_cryptodev_stats *stats)
  72 {
  73         struct qat_common_stats qat_stats = {0};
  74         struct qat_asym_dev_private *qat_priv;
  75
  76         if (stats == NULL || dev == NULL) {
  77                 QAT_LOG(ERR, "invalid ptr: stats %p, dev %p", stats, dev);
  78                 return;
  79         }
  80         qat_priv = dev->data->dev_private;
  81
  82         qat_stats_get(qat_priv->qat_dev, &qat_stats, QAT_SERVICE_ASYMMETRIC);
  83         stats->enqueued_count = qat_stats.enqueued_count;
  84         stats->dequeued_count = qat_stats.dequeued_count;
  85         stats->enqueue_err_count = qat_stats.enqueue_err_count;
  86         stats->dequeue_err_count = qat_stats.dequeue_err_count;
  87 }
  88
  89 static void qat_asym_stats_reset(struct rte_cryptodev *dev)
  90 {
  91         struct qat_asym_dev_private *qat_priv;
  92
  93         if (dev == NULL) {
  94                 QAT_LOG(ERR, "invalid asymmetric cryptodev ptr %p", dev);
  95                 return;
  96         }
  97         qat_priv = dev->data->dev_private;
  98
  99         qat_stats_reset(qat_priv->qat_dev, QAT_SERVICE_ASYMMETRIC);
 100 }
 101
 102 static int qat_asym_qp_release(struct rte_cryptodev *dev,
 103                                uint16_t queue_pair_id)
 104 {
 105         struct qat_asym_dev_private *qat_private = dev->data->dev_private;
 106
 107         QAT_LOG(DEBUG, "Release asym qp %u on device %d",
 108                                 queue_pair_id, dev->data->dev_id);
 109
 110         qat_private->qat_dev->qps_in_use[QAT_SERVICE_ASYMMETRIC][queue_pair_id]
 111                                                 = NULL;
 112
 113         return qat_qp_release((struct qat_qp **)
 114                         &(dev->data->queue_pairs[queue_pair_id]));
 115 }
 116
 117 static int qat_asym_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
 118                              const struct rte_cryptodev_qp_conf *qp_conf,
 119                              int socket_id)
 120 {
 121         struct qat_qp_config qat_qp_conf;
 122         struct qat_qp *qp;
 123         int ret = 0;
 124         uint32_t i;
 125
 126         struct qat_qp **qp_addr =
 127                         (struct qat_qp **)&(dev->data->queue_pairs[qp_id]);
 128         struct qat_asym_dev_private *qat_private = dev->data->dev_private;
 129         struct qat_pci_device *qat_dev = qat_private->qat_dev;
 130         const struct qat_qp_hw_data *asym_hw_qps =
 131                         qat_gen_config[qat_private->qat_dev->qat_dev_gen]
 132                                       .qp_hw_data[QAT_SERVICE_ASYMMETRIC];
 133         const struct qat_qp_hw_data *qp_hw_data = asym_hw_qps + qp_id;
 134
 135         /* If qp is already in use free ring memory and qp metadata. */
 136         if (*qp_addr != NULL) {
 137                 ret = qat_asym_qp_release(dev, qp_id);
 138                 if (ret < 0)
 139                         return ret;
 140         }
 141         if (qp_id >= qat_qps_per_service(qat_dev, QAT_SERVICE_ASYMMETRIC)) {
 142                 QAT_LOG(ERR, "qp_id %u invalid for this device", qp_id);
 143                 return -EINVAL;
 144         }
 145
 146         qat_qp_conf.hw = qp_hw_data;
 147         qat_qp_conf.cookie_size = sizeof(struct qat_asym_op_cookie);
 148         qat_qp_conf.nb_descriptors = qp_conf->nb_descriptors;
 149         qat_qp_conf.socket_id = socket_id;
 150         qat_qp_conf.service_str = "asym";
 151
 152         ret = qat_qp_setup(qat_private->qat_dev, qp_addr, qp_id, &qat_qp_conf);
 153         if (ret != 0)
 154                 return ret;
 155
 156         /* store a link to the qp in the qat_pci_device */
 157         qat_private->qat_dev->qps_in_use[QAT_SERVICE_ASYMMETRIC][qp_id]
 158                                                         = *qp_addr;
 159
 160         qp = (struct qat_qp *)*qp_addr;
 161         qp->min_enq_burst_threshold = qat_private->min_enq_burst_threshold;
 162
 163         for (i = 0; i < qp->nb_descriptors; i++) {
 164                 int j;
 165
 166                 struct qat_asym_op_cookie __rte_unused *cookie =
 167                                 qp->op_cookies[i];
 168                 cookie->input_addr = rte_mempool_virt2iova(cookie) +
 169                                 offsetof(struct qat_asym_op_cookie,
 170                                                 input_params_ptrs);
 171
 172                 cookie->output_addr = rte_mempool_virt2iova(cookie) +
 173                                 offsetof(struct qat_asym_op_cookie,
 174                                                 output_params_ptrs);
 175
 176                 for (j = 0; j < 8; j++) {
 177                         cookie->input_params_ptrs[j] =
 178                                         rte_mempool_virt2iova(cookie) +
 179                                         offsetof(struct qat_asym_op_cookie,
 180                                                         input_array[j]);
 181                         cookie->output_params_ptrs[j] =
 182                                         rte_mempool_virt2iova(cookie) +
 183                                         offsetof(struct qat_asym_op_cookie,
 184                                                         output_array[j]);
 185                 }
 186         }
 187
 188         return ret;
 189 }
 190
 191 struct rte_cryptodev_ops crypto_qat_ops = {
 192
 193         /* Device related operations */
 194         .dev_configure          = qat_asym_dev_config,
 195         .dev_start              = qat_asym_dev_start,
 196         .dev_stop               = qat_asym_dev_stop,
 197         .dev_close              = qat_asym_dev_close,
 198         .dev_infos_get          = qat_asym_dev_info_get,
 199
 200         .stats_get              = qat_asym_stats_get,
 201         .stats_reset            = qat_asym_stats_reset,
 202         .queue_pair_setup       = qat_asym_qp_setup,
 203         .queue_pair_release     = qat_asym_qp_release,
 204
 205         /* Crypto related operations */
 206         .asym_session_get_size  = qat_asym_session_get_private_size,
 207         .asym_session_configure = qat_asym_session_configure,
 208         .asym_session_clear     = qat_asym_session_clear
 209 };
 210
 211 uint16_t qat_asym_pmd_enqueue_op_burst(void *qp, struct rte_crypto_op **ops,
 212                                        uint16_t nb_ops)
 213 {
 214         return qat_enqueue_op_burst(qp, (void **)ops, nb_ops);
 215 }
 216
 217 uint16_t qat_asym_pmd_dequeue_op_burst(void *qp, struct rte_crypto_op **ops,
 218                                        uint16_t nb_ops)
 219 {
 220         return qat_dequeue_op_burst(qp, (void **)ops, nb_ops);
 221 }
 222
 223 /* An rte_driver is needed in the registration of both the device and the driver
 224  * with cryptodev.
 225  * The actual qat pci's rte_driver can't be used as its name represents
 226  * the whole pci device with all services. Think of this as a holder for a name
 227  * for the crypto part of the pci device.
 228  */
 229 static const char qat_asym_drv_name[] = RTE_STR(CRYPTODEV_NAME_QAT_ASYM_PMD);
 230 static const struct rte_driver cryptodev_qat_asym_driver = {
 231         .name = qat_asym_drv_name,
 232         .alias = qat_asym_drv_name
 233 };
 234
 235 int
 236 qat_asym_dev_create(struct qat_pci_device *qat_pci_dev,
 237                 struct qat_dev_cmd_param *qat_dev_cmd_param)
 238 {
 239         int i = 0;
 240         struct qat_device_info *qat_dev_instance =
 241                         &qat_pci_devs[qat_pci_dev->qat_dev_id];
 242         struct rte_cryptodev_pmd_init_params init_params = {
 243                         .name = "",
 244                         .socket_id =
 245                                 qat_dev_instance->pci_dev->device.numa_node,
 246                         .private_data_size = sizeof(struct qat_asym_dev_private)
 247         };
 248         char name[RTE_CRYPTODEV_NAME_MAX_LEN];
 249         char capa_memz_name[RTE_CRYPTODEV_NAME_MAX_LEN];
 250         struct rte_cryptodev *cryptodev;
 251         struct qat_asym_dev_private *internals;
 252
 253         snprintf(name, RTE_CRYPTODEV_NAME_MAX_LEN, "%s_%s",
 254                         qat_pci_dev->name, "asym");
 255         QAT_LOG(DEBUG, "Creating QAT ASYM device %s\n", name);
 256
 257         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
 258                 qat_pci_dev->qat_asym_driver_id =
 259                                 qat_asym_driver_id;
 260         } else if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
 261                 if (qat_pci_dev->qat_asym_driver_id !=
 262                                 qat_asym_driver_id) {
 263                         QAT_LOG(ERR,
 264                                 "Device %s have different driver id than corresponding device in primary process",
 265                                 name);
 266                         return -(EFAULT);
 267                 }
 268         }
 269
 270         /* Populate subset device to use in cryptodev device creation */
 271         qat_dev_instance->asym_rte_dev.driver = &cryptodev_qat_asym_driver;
 272         qat_dev_instance->asym_rte_dev.numa_node =
 273                         qat_dev_instance->pci_dev->device.numa_node;
 274         qat_dev_instance->asym_rte_dev.devargs = NULL;
 275
 276         cryptodev = rte_cryptodev_pmd_create(name,
 277                         &(qat_dev_instance->asym_rte_dev), &init_params);
 278
 279         if (cryptodev == NULL)
 280                 return -ENODEV;
 281
 282         qat_dev_instance->asym_rte_dev.name = cryptodev->data->name;
 283         cryptodev->driver_id = qat_asym_driver_id;
 284         cryptodev->dev_ops = &crypto_qat_ops;
 285
 286         cryptodev->enqueue_burst = qat_asym_pmd_enqueue_op_burst;
 287         cryptodev->dequeue_burst = qat_asym_pmd_dequeue_op_burst;
 288
 289         cryptodev->feature_flags = RTE_CRYPTODEV_FF_ASYMMETRIC_CRYPTO |
 290                         RTE_CRYPTODEV_FF_HW_ACCELERATED |
 291                         RTE_CRYPTODEV_FF_ASYM_SESSIONLESS |
 292                         RTE_CRYPTODEV_FF_RSA_PRIV_OP_KEY_EXP |
 293                         RTE_CRYPTODEV_FF_RSA_PRIV_OP_KEY_QT;
 294
 295         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 296                 return 0;
 297
 298         snprintf(capa_memz_name, RTE_CRYPTODEV_NAME_MAX_LEN,
 299                         "QAT_ASYM_CAPA_GEN_%d",
 300                         qat_pci_dev->qat_dev_gen);
 301
 302         internals = cryptodev->data->dev_private;
 303         internals->qat_dev = qat_pci_dev;
 304         internals->asym_dev_id = cryptodev->data->dev_id;
 305         internals->qat_dev_capabilities = qat_gen1_asym_capabilities;
 306
 307         internals->capa_mz = rte_memzone_lookup(capa_memz_name);
 308         if (internals->capa_mz == NULL) {
 309                 internals->capa_mz = rte_memzone_reserve(capa_memz_name,
 310                         sizeof(qat_gen1_asym_capabilities),
 311                         rte_socket_id(), 0);
 312         }
 313         if (internals->capa_mz == NULL) {
 314                 QAT_LOG(DEBUG,
 315                         "Error allocating memzone for capabilities, destroying PMD for %s",
 316                         name);
 317                 rte_cryptodev_pmd_destroy(cryptodev);
 318                 memset(&qat_dev_instance->asym_rte_dev, 0,
 319                         sizeof(qat_dev_instance->asym_rte_dev));
 320                 return -EFAULT;
 321         }
 322
 323         memcpy(internals->capa_mz->addr, qat_gen1_asym_capabilities,
 324                         sizeof(qat_gen1_asym_capabilities));
 325         internals->qat_dev_capabilities = internals->capa_mz->addr;
 326
 327         while (1) {
 328                 if (qat_dev_cmd_param[i].name == NULL)
 329                         break;
 330                 if (!strcmp(qat_dev_cmd_param[i].name, ASYM_ENQ_THRESHOLD_NAME))
 331                         internals->min_enq_burst_threshold =
 332                                         qat_dev_cmd_param[i].val;
 333                 i++;
 334         }
 335
 336         qat_pci_dev->asym_dev = internals;
 337         QAT_LOG(DEBUG, "Created QAT ASYM device %s as cryptodev instance %d",
 338                         cryptodev->data->name, internals->asym_dev_id);
 339         return 0;
 340 }
 341
 342 int
 343 qat_asym_dev_destroy(struct qat_pci_device *qat_pci_dev)
 344 {
 345         struct rte_cryptodev *cryptodev;
 346
 347         if (qat_pci_dev == NULL)
 348                 return -ENODEV;
 349         if (qat_pci_dev->asym_dev == NULL)
 350                 return 0;
 351         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
 352                 rte_memzone_free(qat_pci_dev->asym_dev->capa_mz);
 353
 354         /* free crypto device */
 355         cryptodev = rte_cryptodev_pmd_get_dev(
 356                         qat_pci_dev->asym_dev->asym_dev_id);
 357         rte_cryptodev_pmd_destroy(cryptodev);
 358         qat_pci_devs[qat_pci_dev->qat_dev_id].asym_rte_dev.name = NULL;
 359         qat_pci_dev->asym_dev = NULL;
 360
 361         return 0;
 362 }
 363
 364 static struct cryptodev_driver qat_crypto_drv;
 365 RTE_PMD_REGISTER_CRYPTO_DRIVER(qat_crypto_drv,
 366                 cryptodev_qat_asym_driver,
 367                 qat_asym_driver_id);