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 = QAT_SYM_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.cookie_size = sizeof(struct qat_sym_op_cookie);
 164         qat_qp_conf.nb_descriptors = qp_conf->nb_descriptors;
 165         qat_qp_conf.socket_id = socket_id;
 166         qat_qp_conf.service_str = "sym";
 167
 168         ret = qat_qp_setup(qat_private->qat_dev, qp_addr, qp_id, &qat_qp_conf);
 169         if (ret != 0)
 170                 return ret;
 171
 172         /* store a link to the qp in the qat_pci_device */
 173         qat_private->qat_dev->qps_in_use[QAT_SERVICE_SYMMETRIC][qp_id]
 174                                                         = *qp_addr;
 175
 176         qp = (struct qat_qp *)*qp_addr;
 177
 178         for (i = 0; i < qp->nb_descriptors; i++) {
 179
 180                 struct qat_sym_op_cookie *cookie =
 181                                 qp->op_cookies[i];
 182
 183                 cookie->qat_sgl_src_phys_addr =
 184                                 rte_mempool_virt2iova(cookie) +
 185                                 offsetof(struct qat_sym_op_cookie,
 186                                 qat_sgl_src);
 187
 188                 cookie->qat_sgl_dst_phys_addr =
 189                                 rte_mempool_virt2iova(cookie) +
 190                                 offsetof(struct qat_sym_op_cookie,
 191                                 qat_sgl_dst);
 192         }
 193
 194         return ret;
 195 }
 196
 197 static struct rte_cryptodev_ops crypto_qat_ops = {
 198
 199                 /* Device related operations */
 200                 .dev_configure          = qat_sym_dev_config,
 201                 .dev_start              = qat_sym_dev_start,
 202                 .dev_stop               = qat_sym_dev_stop,
 203                 .dev_close              = qat_sym_dev_close,
 204                 .dev_infos_get          = qat_sym_dev_info_get,
 205
 206                 .stats_get              = qat_sym_stats_get,
 207                 .stats_reset            = qat_sym_stats_reset,
 208                 .queue_pair_setup       = qat_sym_qp_setup,
 209                 .queue_pair_release     = qat_sym_qp_release,
 210                 .queue_pair_start       = NULL,
 211                 .queue_pair_stop        = NULL,
 212                 .queue_pair_count       = NULL,
 213
 214                 /* Crypto related operations */
 215                 .session_get_size       = qat_sym_session_get_private_size,
 216                 .session_configure      = qat_sym_session_configure,
 217                 .session_clear          = qat_sym_session_clear
 218 };
 219
 220 static uint16_t
 221 qat_sym_pmd_enqueue_op_burst(void *qp, struct rte_crypto_op **ops,
 222                 uint16_t nb_ops)
 223 {
 224         return qat_enqueue_op_burst(qp, (void **)ops, nb_ops);
 225 }
 226
 227 static uint16_t
 228 qat_sym_pmd_dequeue_op_burst(void *qp, struct rte_crypto_op **ops,
 229                 uint16_t nb_ops)
 230 {
 231         return qat_dequeue_op_burst(qp, (void **)ops, nb_ops);
 232 }
 233
 234 /* An rte_driver is needed in the registration of both the device and the driver
 235  * with cryptodev.
 236  * The actual qat pci's rte_driver can't be used as its name represents
 237  * the whole pci device with all services. Think of this as a holder for a name
 238  * for the crypto part of the pci device.
 239  */
 240 static const char qat_sym_drv_name[] = RTE_STR(CRYPTODEV_NAME_QAT_SYM_PMD);
 241 static const struct rte_driver cryptodev_qat_sym_driver = {
 242         .name = qat_sym_drv_name,
 243         .alias = qat_sym_drv_name
 244 };
 245
 246 int
 247 qat_sym_dev_create(struct qat_pci_device *qat_pci_dev)
 248 {
 249         struct rte_cryptodev_pmd_init_params init_params = {
 250                         .name = "",
 251                         .socket_id = qat_pci_dev->pci_dev->device.numa_node,
 252                         .private_data_size = sizeof(struct qat_sym_dev_private),
 253                         .max_nb_sessions = QAT_SYM_PMD_MAX_NB_SESSIONS
 254         };
 255         char name[RTE_CRYPTODEV_NAME_MAX_LEN];
 256         struct rte_cryptodev *cryptodev;
 257         struct qat_sym_dev_private *internals;
 258
 259         snprintf(name, RTE_CRYPTODEV_NAME_MAX_LEN, "%s_%s",
 260                         qat_pci_dev->name, "sym");
 261         PMD_DRV_LOG(DEBUG, "Creating QAT SYM device %s", name);
 262
 263         /* Populate subset device to use in cryptodev device creation */
 264         qat_pci_dev->sym_rte_dev.driver = &cryptodev_qat_sym_driver;
 265         qat_pci_dev->sym_rte_dev.numa_node =
 266                                 qat_pci_dev->pci_dev->device.numa_node;
 267         qat_pci_dev->sym_rte_dev.devargs = NULL;
 268
 269         cryptodev = rte_cryptodev_pmd_create(name,
 270                         &(qat_pci_dev->sym_rte_dev), &init_params);
 271
 272         if (cryptodev == NULL)
 273                 return -ENODEV;
 274
 275         qat_pci_dev->sym_rte_dev.name = cryptodev->data->name;
 276         cryptodev->driver_id = cryptodev_qat_driver_id;
 277         cryptodev->dev_ops = &crypto_qat_ops;
 278
 279         cryptodev->enqueue_burst = qat_sym_pmd_enqueue_op_burst;
 280         cryptodev->dequeue_burst = qat_sym_pmd_dequeue_op_burst;
 281
 282         cryptodev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 283                         RTE_CRYPTODEV_FF_HW_ACCELERATED |
 284                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 285                         RTE_CRYPTODEV_FF_MBUF_SCATTER_GATHER;
 286
 287         internals = cryptodev->data->dev_private;
 288         internals->qat_dev = qat_pci_dev;
 289         qat_pci_dev->sym_dev = internals;
 290
 291         internals->sym_dev_id = cryptodev->data->dev_id;
 292         switch (qat_pci_dev->qat_dev_gen) {
 293         case QAT_GEN1:
 294                 internals->qat_dev_capabilities = qat_gen1_sym_capabilities;
 295                 break;
 296         case QAT_GEN2:
 297                 internals->qat_dev_capabilities = qat_gen2_sym_capabilities;
 298                 break;
 299         default:
 300                 internals->qat_dev_capabilities = qat_gen2_sym_capabilities;
 301                 PMD_DRV_LOG(DEBUG,
 302                         "QAT gen %d capabilities unknown, default to GEN2",
 303                                         qat_pci_dev->qat_dev_gen);
 304                 break;
 305         }
 306
 307         PMD_DRV_LOG(DEBUG, "Created QAT SYM device %s as cryptodev instance %d",
 308                         cryptodev->data->name, internals->sym_dev_id);
 309         return 0;
 310 }
 311
 312 int
 313 qat_sym_dev_destroy(struct qat_pci_device *qat_pci_dev)
 314 {
 315         struct rte_cryptodev *cryptodev;
 316
 317         if (qat_pci_dev == NULL)
 318                 return -ENODEV;
 319         if (qat_pci_dev->sym_dev == NULL)
 320                 return 0;
 321
 322         /* free crypto device */
 323         cryptodev = rte_cryptodev_pmd_get_dev(qat_pci_dev->sym_dev->sym_dev_id);
 324         rte_cryptodev_pmd_destroy(cryptodev);
 325         qat_pci_dev->sym_rte_dev.name = NULL;
 326         qat_pci_dev->sym_dev = NULL;
 327
 328         return 0;
 329 }
 330
 331
 332 static struct cryptodev_driver qat_crypto_drv;
 333 RTE_PMD_REGISTER_CRYPTO_DRIVER(qat_crypto_drv,
 334                 cryptodev_qat_sym_driver,
 335                 cryptodev_qat_driver_id);