drivers/crypto/qat/qat_sym_pmd.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2015-2018 Intel Corporation
   3  */
   4
   5 #include <rte_bus_pci.h>
   6 #include <rte_common.h>
   7 #include <rte_dev.h>
   8 #include <rte_malloc.h>
   9 #include <rte_pci.h>
  10 #include <rte_cryptodev_pmd.h>
  11
  12 #include "qat_logs.h"
  13 #include "qat_sym.h"
  14 #include "qat_sym_session.h"
  15 #include "qat_sym_pmd.h"
  16
  17 uint8_t cryptodev_qat_driver_id;
  18
  19 static const struct rte_cryptodev_capabilities qat_gen1_sym_capabilities[] = {
  20         QAT_BASE_GEN1_SYM_CAPABILITIES,
  21         RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
  22 };
  23
  24 static const struct rte_cryptodev_capabilities qat_gen2_sym_capabilities[] = {
  25         QAT_BASE_GEN1_SYM_CAPABILITIES,
  26         QAT_EXTRA_GEN2_SYM_CAPABILITIES,
  27         RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
  28 };
  29
  30 static int qat_sym_qp_release(struct rte_cryptodev *dev,
  31         uint16_t queue_pair_id);
  32
  33 static int qat_sym_dev_config(__rte_unused struct rte_cryptodev *dev,
  34                 __rte_unused struct rte_cryptodev_config *config)
  35 {
  36         PMD_INIT_FUNC_TRACE();
  37         return 0;
  38 }
  39
  40 static int qat_sym_dev_start(__rte_unused struct rte_cryptodev *dev)
  41 {
  42         PMD_INIT_FUNC_TRACE();
  43         return 0;
  44 }
  45
  46 static void qat_sym_dev_stop(__rte_unused struct rte_cryptodev *dev)
  47 {
  48         PMD_INIT_FUNC_TRACE();
  49 }
  50
  51 static int qat_sym_dev_close(struct rte_cryptodev *dev)
  52 {
  53         int i, ret;
  54
  55         PMD_INIT_FUNC_TRACE();
  56
  57         for (i = 0; i < dev->data->nb_queue_pairs; i++) {
  58                 ret = qat_sym_qp_release(dev, i);
  59                 if (ret < 0)
  60                         return ret;
  61         }
  62
  63         return 0;
  64 }
  65
  66 static void qat_sym_dev_info_get(struct rte_cryptodev *dev,
  67                         struct rte_cryptodev_info *info)
  68 {
  69         struct qat_sym_dev_private *internals = dev->data->dev_private;
  70         const struct qat_qp_hw_data *sym_hw_qps =
  71                 qat_gen_config[internals->qat_dev->qat_dev_gen]
  72                               .qp_hw_data[QAT_SERVICE_SYMMETRIC];
  73
  74         PMD_INIT_FUNC_TRACE();
  75         if (info != NULL) {
  76                 info->max_nb_queue_pairs =
  77                         qat_qps_per_service(sym_hw_qps, QAT_SERVICE_SYMMETRIC);
  78                 info->feature_flags = dev->feature_flags;
  79                 info->capabilities = internals->qat_dev_capabilities;
  80                 info->sym.max_nb_sessions = RTE_QAT_PMD_MAX_NB_SESSIONS;
  81                 info->driver_id = cryptodev_qat_driver_id;
  82                 info->pci_dev = RTE_DEV_TO_PCI(dev->device);
  83         }
  84 }
  85
  86 static void qat_sym_stats_get(struct rte_cryptodev *dev,
  87                 struct rte_cryptodev_stats *stats)
  88 {
  89         struct qat_common_stats qat_stats = {0};
  90         struct qat_sym_dev_private *qat_priv;
  91
  92         if (stats == NULL || dev == NULL) {
  93                 PMD_DRV_LOG(ERR, "invalid ptr: stats %p, dev %p", stats, dev);
  94                 return;
  95         }
  96         qat_priv = dev->data->dev_private;
  97
  98         qat_stats_get(qat_priv->qat_dev, &qat_stats, QAT_SERVICE_SYMMETRIC);
  99         stats->enqueued_count = qat_stats.enqueued_count;
 100         stats->dequeued_count = qat_stats.dequeued_count;
 101         stats->enqueue_err_count = qat_stats.enqueue_err_count;
 102         stats->dequeue_err_count = qat_stats.dequeue_err_count;
 103 }
 104
 105 static void qat_sym_stats_reset(struct rte_cryptodev *dev)
 106 {
 107         struct qat_sym_dev_private *qat_priv;
 108
 109         if (dev == NULL) {
 110                 PMD_DRV_LOG(ERR, "invalid cryptodev ptr %p", dev);
 111                 return;
 112         }
 113         qat_priv = dev->data->dev_private;
 114
 115         qat_stats_reset(qat_priv->qat_dev, QAT_SERVICE_SYMMETRIC);
 116
 117 }
 118
 119 static int qat_sym_qp_release(struct rte_cryptodev *dev, uint16_t queue_pair_id)
 120 {
 121         struct qat_sym_dev_private *qat_private = dev->data->dev_private;
 122
 123         PMD_DRV_LOG(DEBUG, "Release sym qp %u on device %d",
 124                                 queue_pair_id, dev->data->dev_id);
 125
 126         qat_private->qat_dev->qps_in_use[QAT_SERVICE_SYMMETRIC][queue_pair_id]
 127                                                 = NULL;
 128
 129         return qat_qp_release((struct qat_qp **)
 130                         &(dev->data->queue_pairs[queue_pair_id]));
 131 }
 132
 133 static int qat_sym_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
 134         const struct rte_cryptodev_qp_conf *qp_conf,
 135         int socket_id, struct rte_mempool *session_pool __rte_unused)
 136 {
 137         struct qat_qp *qp;
 138         int ret = 0;
 139         uint32_t i;
 140         struct qat_qp_config qat_qp_conf;
 141
 142         struct qat_qp **qp_addr =
 143                         (struct qat_qp **)&(dev->data->queue_pairs[qp_id]);
 144         struct qat_sym_dev_private *qat_private = dev->data->dev_private;
 145         const struct qat_qp_hw_data *sym_hw_qps =
 146                         qat_gen_config[qat_private->qat_dev->qat_dev_gen]
 147                                       .qp_hw_data[QAT_SERVICE_SYMMETRIC];
 148         const struct qat_qp_hw_data *qp_hw_data = sym_hw_qps + qp_id;
 149
 150         /* If qp is already in use free ring memory and qp metadata. */
 151         if (*qp_addr != NULL) {
 152                 ret = qat_sym_qp_release(dev, qp_id);
 153                 if (ret < 0)
 154                         return ret;
 155         }
 156         if (qp_id >= qat_qps_per_service(sym_hw_qps, QAT_SERVICE_SYMMETRIC)) {
 157                 PMD_DRV_LOG(ERR, "qp_id %u invalid for this device", qp_id);
 158                 return -EINVAL;
 159         }
 160
 161         qat_qp_conf.hw = qp_hw_data;
 162         qat_qp_conf.build_request = qat_sym_build_request;
 163         qat_qp_conf.process_response = qat_sym_process_response;
 164         qat_qp_conf.cookie_size = sizeof(struct qat_sym_op_cookie);
 165         qat_qp_conf.nb_descriptors = qp_conf->nb_descriptors;
 166         qat_qp_conf.socket_id = socket_id;
 167         qat_qp_conf.service_str = "sym";
 168
 169         ret = qat_qp_setup(qat_private->qat_dev, qp_addr, qp_id, &qat_qp_conf);
 170         if (ret != 0)
 171                 return ret;
 172
 173         /* store a link to the qp in the qat_pci_device */
 174         qat_private->qat_dev->qps_in_use[QAT_SERVICE_SYMMETRIC][qp_id]
 175                                                         = *qp_addr;
 176
 177         qp = (struct qat_qp *)*qp_addr;
 178
 179         for (i = 0; i < qp->nb_descriptors; i++) {
 180
 181                 struct qat_sym_op_cookie *cookie =
 182                                 qp->op_cookies[i];
 183
 184                 cookie->qat_sgl_src_phys_addr =
 185                                 rte_mempool_virt2iova(cookie) +
 186                                 offsetof(struct qat_sym_op_cookie,
 187                                 qat_sgl_src);
 188
 189                 cookie->qat_sgl_dst_phys_addr =
 190                                 rte_mempool_virt2iova(cookie) +
 191                                 offsetof(struct qat_sym_op_cookie,
 192                                 qat_sgl_dst);
 193         }
 194
 195         return ret;
 196 }
 197
 198 static struct rte_cryptodev_ops crypto_qat_ops = {
 199
 200                 /* Device related operations */
 201                 .dev_configure          = qat_sym_dev_config,
 202                 .dev_start              = qat_sym_dev_start,
 203                 .dev_stop               = qat_sym_dev_stop,
 204                 .dev_close              = qat_sym_dev_close,
 205                 .dev_infos_get          = qat_sym_dev_info_get,
 206
 207                 .stats_get              = qat_sym_stats_get,
 208                 .stats_reset            = qat_sym_stats_reset,
 209                 .queue_pair_setup       = qat_sym_qp_setup,
 210                 .queue_pair_release     = qat_sym_qp_release,
 211                 .queue_pair_start       = NULL,
 212                 .queue_pair_stop        = NULL,
 213                 .queue_pair_count       = NULL,
 214
 215                 /* Crypto related operations */
 216                 .session_get_size       = qat_sym_session_get_private_size,
 217                 .session_configure      = qat_sym_session_configure,
 218                 .session_clear          = qat_sym_session_clear
 219 };
 220
 221 static uint16_t
 222 qat_sym_pmd_enqueue_op_burst(void *qp, struct rte_crypto_op **ops,
 223                 uint16_t nb_ops)
 224 {
 225         return qat_enqueue_op_burst(qp, (void **)ops, nb_ops);
 226 }
 227
 228 static uint16_t
 229 qat_sym_pmd_dequeue_op_burst(void *qp, struct rte_crypto_op **ops,
 230                 uint16_t nb_ops)
 231 {
 232         return qat_dequeue_op_burst(qp, (void **)ops, nb_ops);
 233 }
 234
 235 /* An rte_driver is needed in the registration of both the device and the driver
 236  * with cryptodev.
 237  * The actual qat pci's rte_driver can't be used as its name represents
 238  * the whole pci device with all services. Think of this as a holder for a name
 239  * for the crypto part of the pci device.
 240  */
 241 static const char qat_sym_drv_name[] = RTE_STR(CRYPTODEV_NAME_QAT_SYM_PMD);
 242 static const struct rte_driver cryptodev_qat_sym_driver = {
 243         .name = qat_sym_drv_name,
 244         .alias = qat_sym_drv_name
 245 };
 246
 247 int
 248 qat_sym_dev_create(struct qat_pci_device *qat_pci_dev)
 249 {
 250         struct rte_cryptodev_pmd_init_params init_params = {
 251                         .name = "",
 252                         .socket_id = qat_pci_dev->pci_dev->device.numa_node,
 253                         .private_data_size = sizeof(struct qat_sym_dev_private),
 254                         .max_nb_sessions = RTE_QAT_PMD_MAX_NB_SESSIONS
 255         };
 256         char name[RTE_CRYPTODEV_NAME_MAX_LEN];
 257         struct rte_cryptodev *cryptodev;
 258         struct qat_sym_dev_private *internals;
 259
 260         snprintf(name, RTE_CRYPTODEV_NAME_MAX_LEN, "%s_%s",
 261                         qat_pci_dev->name, "sym");
 262         PMD_DRV_LOG(DEBUG, "Creating QAT SYM device %s", name);
 263
 264         /* Populate subset device to use in cryptodev device creation */
 265         qat_pci_dev->sym_rte_dev.driver = &cryptodev_qat_sym_driver;
 266         qat_pci_dev->sym_rte_dev.numa_node =
 267                                 qat_pci_dev->pci_dev->device.numa_node;
 268         qat_pci_dev->sym_rte_dev.devargs = NULL;
 269
 270         cryptodev = rte_cryptodev_pmd_create(name,
 271                         &(qat_pci_dev->sym_rte_dev), &init_params);
 272
 273         if (cryptodev == NULL)
 274                 return -ENODEV;
 275
 276         qat_pci_dev->sym_rte_dev.name = cryptodev->data->name;
 277         cryptodev->driver_id = cryptodev_qat_driver_id;
 278         cryptodev->dev_ops = &crypto_qat_ops;
 279
 280         cryptodev->enqueue_burst = qat_sym_pmd_enqueue_op_burst;
 281         cryptodev->dequeue_burst = qat_sym_pmd_dequeue_op_burst;
 282
 283         cryptodev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 284                         RTE_CRYPTODEV_FF_HW_ACCELERATED |
 285                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 286                         RTE_CRYPTODEV_FF_MBUF_SCATTER_GATHER;
 287
 288         internals = cryptodev->data->dev_private;
 289         internals->qat_dev = qat_pci_dev;
 290         qat_pci_dev->sym_dev = internals;
 291
 292         internals->sym_dev_id = cryptodev->data->dev_id;
 293         switch (qat_pci_dev->qat_dev_gen) {
 294         case QAT_GEN1:
 295                 internals->qat_dev_capabilities = qat_gen1_sym_capabilities;
 296                 break;
 297         case QAT_GEN2:
 298                 internals->qat_dev_capabilities = qat_gen2_sym_capabilities;
 299                 break;
 300         default:
 301                 internals->qat_dev_capabilities = qat_gen2_sym_capabilities;
 302                 PMD_DRV_LOG(DEBUG,
 303                         "QAT gen %d capabilities unknown, default to GEN2",
 304                                         qat_pci_dev->qat_dev_gen);
 305                 break;
 306         }
 307
 308         PMD_DRV_LOG(DEBUG, "Created QAT SYM device %s as cryptodev instance %d",
 309                         cryptodev->data->name, internals->sym_dev_id);
 310         return 0;
 311 }
 312
 313 int
 314 qat_sym_dev_destroy(struct qat_pci_device *qat_pci_dev)
 315 {
 316         struct rte_cryptodev *cryptodev;
 317
 318         if (qat_pci_dev == NULL)
 319                 return -ENODEV;
 320         if (qat_pci_dev->sym_dev == NULL)
 321                 return 0;
 322
 323         /* free crypto device */
 324         cryptodev = rte_cryptodev_pmd_get_dev(qat_pci_dev->sym_dev->sym_dev_id);
 325         rte_cryptodev_pmd_destroy(cryptodev);
 326         qat_pci_dev->sym_rte_dev.name = NULL;
 327         qat_pci_dev->sym_dev = NULL;
 328
 329         return 0;
 330 }
 331
 332
 333 static struct cryptodev_driver qat_crypto_drv;
 334 RTE_PMD_REGISTER_CRYPTO_DRIVER(qat_crypto_drv,
 335                 cryptodev_qat_sym_driver,
 336                 cryptodev_qat_driver_id);