ceph/src/seastar/dpdk/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         return 0;
  37 }
  38
  39 static int qat_sym_dev_start(__rte_unused struct rte_cryptodev *dev)
  40 {
  41         return 0;
  42 }
  43
  44 static void qat_sym_dev_stop(__rte_unused struct rte_cryptodev *dev)
  45 {
  46         return;
  47 }
  48
  49 static int qat_sym_dev_close(struct rte_cryptodev *dev)
  50 {
  51         int i, ret;
  52
  53         for (i = 0; i < dev->data->nb_queue_pairs; i++) {
  54                 ret = qat_sym_qp_release(dev, i);
  55                 if (ret < 0)
  56                         return ret;
  57         }
  58
  59         return 0;
  60 }
  61
  62 static void qat_sym_dev_info_get(struct rte_cryptodev *dev,
  63                         struct rte_cryptodev_info *info)
  64 {
  65         struct qat_sym_dev_private *internals = dev->data->dev_private;
  66         const struct qat_qp_hw_data *sym_hw_qps =
  67                 qat_gen_config[internals->qat_dev->qat_dev_gen]
  68                               .qp_hw_data[QAT_SERVICE_SYMMETRIC];
  69
  70         if (info != NULL) {
  71                 info->max_nb_queue_pairs =
  72                         qat_qps_per_service(sym_hw_qps, QAT_SERVICE_SYMMETRIC);
  73                 info->feature_flags = dev->feature_flags;
  74                 info->capabilities = internals->qat_dev_capabilities;
  75                 info->driver_id = cryptodev_qat_driver_id;
  76                 /* No limit of number of sessions */
  77                 info->sym.max_nb_sessions = 0;
  78         }
  79 }
  80
  81 static void qat_sym_stats_get(struct rte_cryptodev *dev,
  82                 struct rte_cryptodev_stats *stats)
  83 {
  84         struct qat_common_stats qat_stats = {0};
  85         struct qat_sym_dev_private *qat_priv;
  86
  87         if (stats == NULL || dev == NULL) {
  88                 QAT_LOG(ERR, "invalid ptr: stats %p, dev %p", stats, dev);
  89                 return;
  90         }
  91         qat_priv = dev->data->dev_private;
  92
  93         qat_stats_get(qat_priv->qat_dev, &qat_stats, QAT_SERVICE_SYMMETRIC);
  94         stats->enqueued_count = qat_stats.enqueued_count;
  95         stats->dequeued_count = qat_stats.dequeued_count;
  96         stats->enqueue_err_count = qat_stats.enqueue_err_count;
  97         stats->dequeue_err_count = qat_stats.dequeue_err_count;
  98 }
  99
 100 static void qat_sym_stats_reset(struct rte_cryptodev *dev)
 101 {
 102         struct qat_sym_dev_private *qat_priv;
 103
 104         if (dev == NULL) {
 105                 QAT_LOG(ERR, "invalid cryptodev ptr %p", dev);
 106                 return;
 107         }
 108         qat_priv = dev->data->dev_private;
 109
 110         qat_stats_reset(qat_priv->qat_dev, QAT_SERVICE_SYMMETRIC);
 111
 112 }
 113
 114 static int qat_sym_qp_release(struct rte_cryptodev *dev, uint16_t queue_pair_id)
 115 {
 116         struct qat_sym_dev_private *qat_private = dev->data->dev_private;
 117
 118         QAT_LOG(DEBUG, "Release sym qp %u on device %d",
 119                                 queue_pair_id, dev->data->dev_id);
 120
 121         qat_private->qat_dev->qps_in_use[QAT_SERVICE_SYMMETRIC][queue_pair_id]
 122                                                 = NULL;
 123
 124         return qat_qp_release((struct qat_qp **)
 125                         &(dev->data->queue_pairs[queue_pair_id]));
 126 }
 127
 128 static int qat_sym_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
 129         const struct rte_cryptodev_qp_conf *qp_conf,
 130         int socket_id)
 131 {
 132         struct qat_qp *qp;
 133         int ret = 0;
 134         uint32_t i;
 135         struct qat_qp_config qat_qp_conf;
 136
 137         struct qat_qp **qp_addr =
 138                         (struct qat_qp **)&(dev->data->queue_pairs[qp_id]);
 139         struct qat_sym_dev_private *qat_private = dev->data->dev_private;
 140         const struct qat_qp_hw_data *sym_hw_qps =
 141                         qat_gen_config[qat_private->qat_dev->qat_dev_gen]
 142                                       .qp_hw_data[QAT_SERVICE_SYMMETRIC];
 143         const struct qat_qp_hw_data *qp_hw_data = sym_hw_qps + qp_id;
 144
 145         /* If qp is already in use free ring memory and qp metadata. */
 146         if (*qp_addr != NULL) {
 147                 ret = qat_sym_qp_release(dev, qp_id);
 148                 if (ret < 0)
 149                         return ret;
 150         }
 151         if (qp_id >= qat_qps_per_service(sym_hw_qps, QAT_SERVICE_SYMMETRIC)) {
 152                 QAT_LOG(ERR, "qp_id %u invalid for this device", qp_id);
 153                 return -EINVAL;
 154         }
 155
 156         qat_qp_conf.hw = qp_hw_data;
 157         qat_qp_conf.build_request = qat_sym_build_request;
 158         qat_qp_conf.cookie_size = sizeof(struct qat_sym_op_cookie);
 159         qat_qp_conf.nb_descriptors = qp_conf->nb_descriptors;
 160         qat_qp_conf.socket_id = socket_id;
 161         qat_qp_conf.service_str = "sym";
 162
 163         ret = qat_qp_setup(qat_private->qat_dev, qp_addr, qp_id, &qat_qp_conf);
 164         if (ret != 0)
 165                 return ret;
 166
 167         /* store a link to the qp in the qat_pci_device */
 168         qat_private->qat_dev->qps_in_use[QAT_SERVICE_SYMMETRIC][qp_id]
 169                                                         = *qp_addr;
 170
 171         qp = (struct qat_qp *)*qp_addr;
 172
 173         for (i = 0; i < qp->nb_descriptors; i++) {
 174
 175                 struct qat_sym_op_cookie *cookie =
 176                                 qp->op_cookies[i];
 177
 178                 cookie->qat_sgl_src_phys_addr =
 179                                 rte_mempool_virt2iova(cookie) +
 180                                 offsetof(struct qat_sym_op_cookie,
 181                                 qat_sgl_src);
 182
 183                 cookie->qat_sgl_dst_phys_addr =
 184                                 rte_mempool_virt2iova(cookie) +
 185                                 offsetof(struct qat_sym_op_cookie,
 186                                 qat_sgl_dst);
 187         }
 188
 189         return ret;
 190 }
 191
 192 static struct rte_cryptodev_ops crypto_qat_ops = {
 193
 194                 /* Device related operations */
 195                 .dev_configure          = qat_sym_dev_config,
 196                 .dev_start              = qat_sym_dev_start,
 197                 .dev_stop               = qat_sym_dev_stop,
 198                 .dev_close              = qat_sym_dev_close,
 199                 .dev_infos_get          = qat_sym_dev_info_get,
 200
 201                 .stats_get              = qat_sym_stats_get,
 202                 .stats_reset            = qat_sym_stats_reset,
 203                 .queue_pair_setup       = qat_sym_qp_setup,
 204                 .queue_pair_release     = qat_sym_qp_release,
 205                 .queue_pair_count       = NULL,
 206
 207                 /* Crypto related operations */
 208                 .sym_session_get_size   = qat_sym_session_get_private_size,
 209                 .sym_session_configure  = qat_sym_session_configure,
 210                 .sym_session_clear      = qat_sym_session_clear
 211 };
 212
 213 static uint16_t
 214 qat_sym_pmd_enqueue_op_burst(void *qp, struct rte_crypto_op **ops,
 215                 uint16_t nb_ops)
 216 {
 217         return qat_enqueue_op_burst(qp, (void **)ops, nb_ops);
 218 }
 219
 220 static uint16_t
 221 qat_sym_pmd_dequeue_op_burst(void *qp, struct rte_crypto_op **ops,
 222                 uint16_t nb_ops)
 223 {
 224         return qat_dequeue_op_burst(qp, (void **)ops, nb_ops);
 225 }
 226
 227 /* An rte_driver is needed in the registration of both the device and the driver
 228  * with cryptodev.
 229  * The actual qat pci's rte_driver can't be used as its name represents
 230  * the whole pci device with all services. Think of this as a holder for a name
 231  * for the crypto part of the pci device.
 232  */
 233 static const char qat_sym_drv_name[] = RTE_STR(CRYPTODEV_NAME_QAT_SYM_PMD);
 234 static const struct rte_driver cryptodev_qat_sym_driver = {
 235         .name = qat_sym_drv_name,
 236         .alias = qat_sym_drv_name
 237 };
 238
 239 int
 240 qat_sym_dev_create(struct qat_pci_device *qat_pci_dev)
 241 {
 242         struct rte_cryptodev_pmd_init_params init_params = {
 243                         .name = "",
 244                         .socket_id = qat_pci_dev->pci_dev->device.numa_node,
 245                         .private_data_size = sizeof(struct qat_sym_dev_private)
 246         };
 247         char name[RTE_CRYPTODEV_NAME_MAX_LEN];
 248         struct rte_cryptodev *cryptodev;
 249         struct qat_sym_dev_private *internals;
 250
 251         snprintf(name, RTE_CRYPTODEV_NAME_MAX_LEN, "%s_%s",
 252                         qat_pci_dev->name, "sym");
 253         QAT_LOG(DEBUG, "Creating QAT SYM device %s", name);
 254
 255         /* Populate subset device to use in cryptodev device creation */
 256         qat_pci_dev->sym_rte_dev.driver = &cryptodev_qat_sym_driver;
 257         qat_pci_dev->sym_rte_dev.numa_node =
 258                                 qat_pci_dev->pci_dev->device.numa_node;
 259         qat_pci_dev->sym_rte_dev.devargs = NULL;
 260
 261         cryptodev = rte_cryptodev_pmd_create(name,
 262                         &(qat_pci_dev->sym_rte_dev), &init_params);
 263
 264         if (cryptodev == NULL)
 265                 return -ENODEV;
 266
 267         qat_pci_dev->sym_rte_dev.name = cryptodev->data->name;
 268         cryptodev->driver_id = cryptodev_qat_driver_id;
 269         cryptodev->dev_ops = &crypto_qat_ops;
 270
 271         cryptodev->enqueue_burst = qat_sym_pmd_enqueue_op_burst;
 272         cryptodev->dequeue_burst = qat_sym_pmd_dequeue_op_burst;
 273
 274         cryptodev->feature_flags = RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
 275                         RTE_CRYPTODEV_FF_HW_ACCELERATED |
 276                         RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
 277                         RTE_CRYPTODEV_FF_IN_PLACE_SGL |
 278                         RTE_CRYPTODEV_FF_OOP_SGL_IN_SGL_OUT |
 279                         RTE_CRYPTODEV_FF_OOP_SGL_IN_LB_OUT |
 280                         RTE_CRYPTODEV_FF_OOP_LB_IN_SGL_OUT |
 281                         RTE_CRYPTODEV_FF_OOP_LB_IN_LB_OUT;
 282
 283         internals = cryptodev->data->dev_private;
 284         internals->qat_dev = qat_pci_dev;
 285         qat_pci_dev->sym_dev = internals;
 286
 287         internals->sym_dev_id = cryptodev->data->dev_id;
 288         switch (qat_pci_dev->qat_dev_gen) {
 289         case QAT_GEN1:
 290                 internals->qat_dev_capabilities = qat_gen1_sym_capabilities;
 291                 break;
 292         case QAT_GEN2:
 293         case QAT_GEN3:
 294                 internals->qat_dev_capabilities = qat_gen2_sym_capabilities;
 295                 break;
 296         default:
 297                 internals->qat_dev_capabilities = qat_gen2_sym_capabilities;
 298                 QAT_LOG(DEBUG,
 299                         "QAT gen %d capabilities unknown, default to GEN2",
 300                                         qat_pci_dev->qat_dev_gen);
 301                 break;
 302         }
 303
 304         QAT_LOG(DEBUG, "Created QAT SYM device %s as cryptodev instance %d",
 305                         cryptodev->data->name, internals->sym_dev_id);
 306         return 0;
 307 }
 308
 309 int
 310 qat_sym_dev_destroy(struct qat_pci_device *qat_pci_dev)
 311 {
 312         struct rte_cryptodev *cryptodev;
 313
 314         if (qat_pci_dev == NULL)
 315                 return -ENODEV;
 316         if (qat_pci_dev->sym_dev == NULL)
 317                 return 0;
 318
 319         /* free crypto device */
 320         cryptodev = rte_cryptodev_pmd_get_dev(qat_pci_dev->sym_dev->sym_dev_id);
 321         rte_cryptodev_pmd_destroy(cryptodev);
 322         qat_pci_dev->sym_rte_dev.name = NULL;
 323         qat_pci_dev->sym_dev = NULL;
 324
 325         return 0;
 326 }
 327
 328 static struct cryptodev_driver qat_crypto_drv;
 329 RTE_PMD_REGISTER_CRYPTO_DRIVER(qat_crypto_drv,
 330                 cryptodev_qat_sym_driver,
 331                 cryptodev_qat_driver_id);