drivers/regex/mlx5/mlx5_regex.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2020 Mellanox Technologies, Ltd
   3  */
   4
   5 #include <rte_malloc.h>
   6 #include <rte_log.h>
   7 #include <rte_errno.h>
   8 #include <rte_pci.h>
   9 #include <rte_regexdev.h>
  10 #include <rte_regexdev_core.h>
  11 #include <rte_regexdev_driver.h>
  12 #include <rte_bus_pci.h>
  13
  14 #include <mlx5_common.h>
  15 #include <mlx5_common_mr.h>
  16 #include <mlx5_glue.h>
  17 #include <mlx5_devx_cmds.h>
  18 #include <mlx5_prm.h>
  19
  20 #include "mlx5_regex.h"
  21 #include "mlx5_regex_utils.h"
  22
  23 #define MLX5_REGEX_DRIVER_NAME regex_mlx5
  24
  25 int mlx5_regex_logtype;
  26
  27 const struct rte_regexdev_ops mlx5_regexdev_ops = {
  28         .dev_info_get = mlx5_regex_info_get,
  29         .dev_configure = mlx5_regex_configure,
  30         .dev_db_import = mlx5_regex_rules_db_import,
  31         .dev_qp_setup = mlx5_regex_qp_setup,
  32         .dev_start = mlx5_regex_start,
  33         .dev_stop = mlx5_regex_stop,
  34         .dev_close = mlx5_regex_close,
  35 };
  36
  37 int
  38 mlx5_regex_start(struct rte_regexdev *dev)
  39 {
  40         struct mlx5_regex_priv *priv = dev->data->dev_private;
  41
  42         return mlx5_dev_mempool_subscribe(priv->cdev);
  43 }
  44
  45 int
  46 mlx5_regex_stop(struct rte_regexdev *dev __rte_unused)
  47 {
  48         struct mlx5_regex_priv *priv = dev->data->dev_private;
  49
  50         mlx5_regex_clean_ctrl(dev);
  51         rte_free(priv->qps);
  52         priv->qps = NULL;
  53
  54         return 0;
  55 }
  56
  57 int
  58 mlx5_regex_close(struct rte_regexdev *dev __rte_unused)
  59 {
  60         return 0;
  61 }
  62
  63 static void
  64 mlx5_regex_get_name(char *name, struct rte_device *dev)
  65 {
  66         sprintf(name, "mlx5_regex_%s", dev->name);
  67 }
  68
  69 static int
  70 mlx5_regex_dev_probe(struct mlx5_common_device *cdev,
  71                      struct mlx5_kvargs_ctrl *mkvlist __rte_unused)
  72 {
  73         struct mlx5_regex_priv *priv = NULL;
  74         struct mlx5_hca_attr *attr = &cdev->config.hca_attr;
  75         char name[RTE_REGEXDEV_NAME_MAX_LEN];
  76         int ret;
  77
  78         if ((!attr->regexp_params && !attr->mmo_regex_sq_en && !attr->mmo_regex_qp_en)
  79             || attr->regexp_num_of_engines == 0) {
  80                 DRV_LOG(ERR, "Not enough capabilities to support RegEx, maybe "
  81                         "old FW/OFED version?");
  82                 rte_errno = ENOTSUP;
  83                 return -rte_errno;
  84         }
  85         priv = rte_zmalloc("mlx5 regex device private", sizeof(*priv),
  86                            RTE_CACHE_LINE_SIZE);
  87         if (!priv) {
  88                 DRV_LOG(ERR, "Failed to allocate private memory.");
  89                 rte_errno = ENOMEM;
  90                 return -rte_errno;
  91         }
  92         priv->mmo_regex_qp_cap = attr->mmo_regex_qp_en;
  93         priv->mmo_regex_sq_cap = attr->mmo_regex_sq_en;
  94         priv->cdev = cdev;
  95         priv->nb_engines = 2; /* attr.regexp_num_of_engines */
  96         if (attr->regexp_version == MLX5_RXP_BF2_IDENTIFIER)
  97                 priv->is_bf2 = 1;
  98         /* Default RXP programming mode to Shared. */
  99         priv->prog_mode = MLX5_RXP_SHARED_PROG_MODE;
 100         mlx5_regex_get_name(name, cdev->dev);
 101         priv->regexdev = rte_regexdev_register(name);
 102         if (priv->regexdev == NULL) {
 103                 DRV_LOG(ERR, "Failed to register RegEx device.");
 104                 rte_errno = rte_errno ? rte_errno : EINVAL;
 105                 goto dev_error;
 106         }
 107         ret = mlx5_devx_uar_prepare(cdev, &priv->uar);
 108         if (ret)
 109                 goto error;
 110         priv->regexdev->dev_ops = &mlx5_regexdev_ops;
 111         priv->regexdev->enqueue = mlx5_regexdev_enqueue;
 112 #ifdef HAVE_MLX5_UMR_IMKEY
 113         if (!attr->umr_indirect_mkey_disabled &&
 114             !attr->umr_modify_entity_size_disabled)
 115                 priv->has_umr = 1;
 116         if (priv->has_umr)
 117                 priv->regexdev->enqueue = mlx5_regexdev_enqueue_gga;
 118 #endif
 119         priv->regexdev->dequeue = mlx5_regexdev_dequeue;
 120         priv->regexdev->device = cdev->dev;
 121         priv->regexdev->data->dev_private = priv;
 122         priv->regexdev->state = RTE_REGEXDEV_READY;
 123         DRV_LOG(INFO, "RegEx GGA is %s.",
 124                 priv->has_umr ? "supported" : "unsupported");
 125         return 0;
 126
 127 error:
 128         if (priv->regexdev)
 129                 rte_regexdev_unregister(priv->regexdev);
 130 dev_error:
 131         rte_free(priv);
 132         return -rte_errno;
 133 }
 134
 135 static int
 136 mlx5_regex_dev_remove(struct mlx5_common_device *cdev)
 137 {
 138         char name[RTE_REGEXDEV_NAME_MAX_LEN];
 139         struct rte_regexdev *dev;
 140         struct mlx5_regex_priv *priv = NULL;
 141
 142         mlx5_regex_get_name(name, cdev->dev);
 143         dev = rte_regexdev_get_device_by_name(name);
 144         if (!dev)
 145                 return 0;
 146         priv = dev->data->dev_private;
 147         if (priv) {
 148                 mlx5_devx_uar_release(&priv->uar);
 149                 if (priv->regexdev)
 150                         rte_regexdev_unregister(priv->regexdev);
 151                 rte_free(priv);
 152         }
 153         return 0;
 154 }
 155
 156 static const struct rte_pci_id mlx5_regex_pci_id_map[] = {
 157         {
 158                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
 159                                 PCI_DEVICE_ID_MELLANOX_CONNECTX6DXBF)
 160         },
 161         {
 162                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
 163                                 PCI_DEVICE_ID_MELLANOX_CONNECTX7BF)
 164         },
 165         {
 166                 .vendor_id = 0
 167         }
 168 };
 169
 170 static struct mlx5_class_driver mlx5_regex_driver = {
 171         .drv_class = MLX5_CLASS_REGEX,
 172         .name = RTE_STR(MLX5_REGEX_DRIVER_NAME),
 173         .id_table = mlx5_regex_pci_id_map,
 174         .probe = mlx5_regex_dev_probe,
 175         .remove = mlx5_regex_dev_remove,
 176 };
 177
 178 RTE_INIT(rte_mlx5_regex_init)
 179 {
 180         mlx5_common_init();
 181         if (mlx5_glue)
 182                 mlx5_class_driver_register(&mlx5_regex_driver);
 183 }
 184
 185 RTE_LOG_REGISTER_DEFAULT(mlx5_regex_logtype, NOTICE)
 186 RTE_PMD_EXPORT_NAME(MLX5_REGEX_DRIVER_NAME, __COUNTER__);
 187 RTE_PMD_REGISTER_PCI_TABLE(MLX5_REGEX_DRIVER_NAME, mlx5_regex_pci_id_map);
 188 RTE_PMD_REGISTER_KMOD_DEP(MLX5_REGEX_DRIVER_NAME, "* ib_uverbs & mlx5_core & mlx5_ib");