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         enum qat_device_gen qat_dev_gen = qat_private->qat_dev->qat_dev_gen;
 107
 108         QAT_LOG(DEBUG, "Release asym qp %u on device %d",
 109                                 queue_pair_id, dev->data->dev_id);
 110
 111         qat_private->qat_dev->qps_in_use[QAT_SERVICE_ASYMMETRIC][queue_pair_id]
 112                                                 = NULL;
 113
 114         return qat_qp_release(qat_dev_gen, (struct qat_qp **)
 115                         &(dev->data->queue_pairs[queue_pair_id]));
 116 }
 117
 118 static int qat_asym_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
 119                              const struct rte_cryptodev_qp_conf *qp_conf,
 120                              int socket_id)
 121 {
 122         struct qat_qp_config qat_qp_conf;
 123         struct qat_qp *qp;
 124         int ret = 0;
 125         uint32_t i;
 126
 127         struct qat_qp **qp_addr =
 128                         (struct qat_qp **)&(dev->data->queue_pairs[qp_id]);
 129         struct qat_asym_dev_private *qat_private = dev->data->dev_private;
 130         struct qat_pci_device *qat_dev = qat_private->qat_dev;
 131         const struct qat_qp_hw_data *asym_hw_qps =
 132                         qat_gen_config[qat_private->qat_dev->qat_dev_gen]
 133                                       .qp_hw_data[QAT_SERVICE_ASYMMETRIC];
 134         const struct qat_qp_hw_data *qp_hw_data = asym_hw_qps + qp_id;
 135
 136         /* If qp is already in use free ring memory and qp metadata. */
 137         if (*qp_addr != NULL) {
 138                 ret = qat_asym_qp_release(dev, qp_id);
 139                 if (ret < 0)
 140                         return ret;
 141         }
 142         if (qp_id >= qat_qps_per_service(qat_dev, QAT_SERVICE_ASYMMETRIC)) {
 143                 QAT_LOG(ERR, "qp_id %u invalid for this device", qp_id);
 144                 return -EINVAL;
 145         }
 146
 147         qat_qp_conf.hw = qp_hw_data;
 148         qat_qp_conf.cookie_size = sizeof(struct qat_asym_op_cookie);
 149         qat_qp_conf.nb_descriptors = qp_conf->nb_descriptors;
 150         qat_qp_conf.socket_id = socket_id;
 151         qat_qp_conf.service_str = "asym";
 152
 153         ret = qat_qp_setup(qat_private->qat_dev, qp_addr, qp_id, &qat_qp_conf);
 154         if (ret != 0)
 155                 return ret;
 156
 157         /* store a link to the qp in the qat_pci_device */
 158         qat_private->qat_dev->qps_in_use[QAT_SERVICE_ASYMMETRIC][qp_id]
 159                                                         = *qp_addr;
 160
 161         qp = (struct qat_qp *)*qp_addr;
 162         qp->min_enq_burst_threshold = qat_private->min_enq_burst_threshold;
 163
 164         for (i = 0; i < qp->nb_descriptors; i++) {
 165                 int j;
 166
 167                 struct qat_asym_op_cookie __rte_unused *cookie =
 168                                 qp->op_cookies[i];
 169                 cookie->input_addr = rte_mempool_virt2iova(cookie) +
 170                                 offsetof(struct qat_asym_op_cookie,
 171                                                 input_params_ptrs);
 172
 173                 cookie->output_addr = rte_mempool_virt2iova(cookie) +
 174                                 offsetof(struct qat_asym_op_cookie,
 175                                                 output_params_ptrs);
 176
 177                 for (j = 0; j < 8; j++) {
 178                         cookie->input_params_ptrs[j] =
 179                                         rte_mempool_virt2iova(cookie) +
 180                                         offsetof(struct qat_asym_op_cookie,
 181                                                         input_array[j]);
 182                         cookie->output_params_ptrs[j] =
 183                                         rte_mempool_virt2iova(cookie) +
 184                                         offsetof(struct qat_asym_op_cookie,
 185                                                         output_array[j]);
 186                 }
 187         }
 188
 189         return ret;
 190 }
 191
 192 struct rte_cryptodev_ops crypto_qat_ops = {
 193
 194         /* Device related operations */
 195         .dev_configure          = qat_asym_dev_config,
 196         .dev_start              = qat_asym_dev_start,
 197         .dev_stop               = qat_asym_dev_stop,
 198         .dev_close              = qat_asym_dev_close,
 199         .dev_infos_get          = qat_asym_dev_info_get,
 200
 201         .stats_get              = qat_asym_stats_get,
 202         .stats_reset            = qat_asym_stats_reset,
 203         .queue_pair_setup       = qat_asym_qp_setup,
 204         .queue_pair_release     = qat_asym_qp_release,
 205
 206         /* Crypto related operations */
 207         .asym_session_get_size  = qat_asym_session_get_private_size,
 208         .asym_session_configure = qat_asym_session_configure,
 209         .asym_session_clear     = qat_asym_session_clear
 210 };
 211
 212 uint16_t qat_asym_pmd_enqueue_op_burst(void *qp, struct rte_crypto_op **ops,
 213                                        uint16_t nb_ops)
 214 {
 215         return qat_enqueue_op_burst(qp, (void **)ops, nb_ops);
 216 }
 217
 218 uint16_t qat_asym_pmd_dequeue_op_burst(void *qp, struct rte_crypto_op **ops,
 219                                        uint16_t nb_ops)
 220 {
 221         return qat_dequeue_op_burst(qp, (void **)ops, nb_ops);
 222 }
 223
 224 /* An rte_driver is needed in the registration of both the device and the driver
 225  * with cryptodev.
 226  * The actual qat pci's rte_driver can't be used as its name represents
 227  * the whole pci device with all services. Think of this as a holder for a name
 228  * for the crypto part of the pci device.
 229  */
 230 static const char qat_asym_drv_name[] = RTE_STR(CRYPTODEV_NAME_QAT_ASYM_PMD);
 231 static const struct rte_driver cryptodev_qat_asym_driver = {
 232         .name = qat_asym_drv_name,
 233         .alias = qat_asym_drv_name
 234 };
 235
 236 int
 237 qat_asym_dev_create(struct qat_pci_device *qat_pci_dev,
 238                 struct qat_dev_cmd_param *qat_dev_cmd_param)
 239 {
 240         int i = 0;
 241         struct qat_device_info *qat_dev_instance =
 242                         &qat_pci_devs[qat_pci_dev->qat_dev_id];
 243         struct rte_cryptodev_pmd_init_params init_params = {
 244                         .name = "",
 245                         .socket_id =
 246                                 qat_dev_instance->pci_dev->device.numa_node,
 247                         .private_data_size = sizeof(struct qat_asym_dev_private)
 248         };
 249         char name[RTE_CRYPTODEV_NAME_MAX_LEN];
 250         char capa_memz_name[RTE_CRYPTODEV_NAME_MAX_LEN];
 251         struct rte_cryptodev *cryptodev;
 252         struct qat_asym_dev_private *internals;
 253
 254         if (qat_pci_dev->qat_dev_gen == QAT_GEN4) {
 255                 QAT_LOG(ERR, "Asymmetric crypto PMD not supported on QAT 4xxx");
 256                 return -EFAULT;
 257         }
 258         if (qat_pci_dev->qat_dev_gen == QAT_GEN3) {
 259                 QAT_LOG(ERR, "Asymmetric crypto PMD not supported on QAT c4xxx");
 260                 return -EFAULT;
 261         }
 262         snprintf(name, RTE_CRYPTODEV_NAME_MAX_LEN, "%s_%s",
 263                         qat_pci_dev->name, "asym");
 264         QAT_LOG(DEBUG, "Creating QAT ASYM device %s\n", name);
 265
 266         if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
 267                 qat_pci_dev->qat_asym_driver_id =
 268                                 qat_asym_driver_id;
 269         } else if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
 270                 if (qat_pci_dev->qat_asym_driver_id !=
 271                                 qat_asym_driver_id) {
 272                         QAT_LOG(ERR,
 273                                 "Device %s have different driver id than corresponding device in primary process",
 274                                 name);
 275                         return -(EFAULT);
 276                 }
 277         }
 278
 279         /* Populate subset device to use in cryptodev device creation */
 280         qat_dev_instance->asym_rte_dev.driver = &cryptodev_qat_asym_driver;
 281         qat_dev_instance->asym_rte_dev.numa_node =
 282                         qat_dev_instance->pci_dev->device.numa_node;
 283         qat_dev_instance->asym_rte_dev.devargs = NULL;
 284
 285         cryptodev = rte_cryptodev_pmd_create(name,
 286                         &(qat_dev_instance->asym_rte_dev), &init_params);
 287
 288         if (cryptodev == NULL)
 289                 return -ENODEV;
 290
 291         qat_dev_instance->asym_rte_dev.name = cryptodev->data->name;
 292         cryptodev->driver_id = qat_asym_driver_id;
 293         cryptodev->dev_ops = &crypto_qat_ops;
 294
 295         cryptodev->enqueue_burst = qat_asym_pmd_enqueue_op_burst;
 296         cryptodev->dequeue_burst = qat_asym_pmd_dequeue_op_burst;
 297
 298         cryptodev->feature_flags = RTE_CRYPTODEV_FF_ASYMMETRIC_CRYPTO |
 299                         RTE_CRYPTODEV_FF_HW_ACCELERATED |
 300                         RTE_CRYPTODEV_FF_ASYM_SESSIONLESS |
 301                         RTE_CRYPTODEV_FF_RSA_PRIV_OP_KEY_EXP |
 302                         RTE_CRYPTODEV_FF_RSA_PRIV_OP_KEY_QT;
 303
 304         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 305                 return 0;
 306
 307         snprintf(capa_memz_name, RTE_CRYPTODEV_NAME_MAX_LEN,
 308                         "QAT_ASYM_CAPA_GEN_%d",
 309                         qat_pci_dev->qat_dev_gen);
 310
 311         internals = cryptodev->data->dev_private;
 312         internals->qat_dev = qat_pci_dev;
 313         internals->asym_dev_id = cryptodev->data->dev_id;
 314         internals->qat_dev_capabilities = qat_gen1_asym_capabilities;
 315
 316         internals->capa_mz = rte_memzone_lookup(capa_memz_name);
 317         if (internals->capa_mz == NULL) {
 318                 internals->capa_mz = rte_memzone_reserve(capa_memz_name,
 319                         sizeof(qat_gen1_asym_capabilities),
 320                         rte_socket_id(), 0);
 321         }
 322         if (internals->capa_mz == NULL) {
 323                 QAT_LOG(DEBUG,
 324                         "Error allocating memzone for capabilities, destroying PMD for %s",
 325                         name);
 326                 rte_cryptodev_pmd_destroy(cryptodev);
 327                 memset(&qat_dev_instance->asym_rte_dev, 0,
 328                         sizeof(qat_dev_instance->asym_rte_dev));
 329                 return -EFAULT;
 330         }
 331
 332         memcpy(internals->capa_mz->addr, qat_gen1_asym_capabilities,
 333                         sizeof(qat_gen1_asym_capabilities));
 334         internals->qat_dev_capabilities = internals->capa_mz->addr;
 335
 336         while (1) {
 337                 if (qat_dev_cmd_param[i].name == NULL)
 338                         break;
 339                 if (!strcmp(qat_dev_cmd_param[i].name, ASYM_ENQ_THRESHOLD_NAME))
 340                         internals->min_enq_burst_threshold =
 341                                         qat_dev_cmd_param[i].val;
 342                 i++;
 343         }
 344
 345         qat_pci_dev->asym_dev = internals;
 346         QAT_LOG(DEBUG, "Created QAT ASYM device %s as cryptodev instance %d",
 347                         cryptodev->data->name, internals->asym_dev_id);
 348         return 0;
 349 }
 350
 351 int
 352 qat_asym_dev_destroy(struct qat_pci_device *qat_pci_dev)
 353 {
 354         struct rte_cryptodev *cryptodev;
 355
 356         if (qat_pci_dev == NULL)
 357                 return -ENODEV;
 358         if (qat_pci_dev->asym_dev == NULL)
 359                 return 0;
 360         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
 361                 rte_memzone_free(qat_pci_dev->asym_dev->capa_mz);
 362
 363         /* free crypto device */
 364         cryptodev = rte_cryptodev_pmd_get_dev(
 365                         qat_pci_dev->asym_dev->asym_dev_id);
 366         rte_cryptodev_pmd_destroy(cryptodev);
 367         qat_pci_devs[qat_pci_dev->qat_dev_id].asym_rte_dev.name = NULL;
 368         qat_pci_dev->asym_dev = NULL;
 369
 370         return 0;
 371 }
 372
 373 static struct cryptodev_driver qat_crypto_drv;
 374 RTE_PMD_REGISTER_CRYPTO_DRIVER(qat_crypto_drv,
 375                 cryptodev_qat_asym_driver,
 376                 qat_asym_driver_id);