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 {
  72         struct mlx5_regex_priv *priv = NULL;
  73         struct mlx5_hca_attr *attr = &cdev->config.hca_attr;
  74         char name[RTE_REGEXDEV_NAME_MAX_LEN];
  75         int ret;
  76
  77         if ((!attr->regexp_params && !attr->mmo_regex_sq_en && !attr->mmo_regex_qp_en)
  78             || attr->regexp_num_of_engines == 0) {
  79                 DRV_LOG(ERR, "Not enough capabilities to support RegEx, maybe "
  80                         "old FW/OFED version?");
  81                 rte_errno = ENOTSUP;
  82                 return -rte_errno;
  83         }
  84         priv = rte_zmalloc("mlx5 regex device private", sizeof(*priv),
  85                            RTE_CACHE_LINE_SIZE);
  86         if (!priv) {
  87                 DRV_LOG(ERR, "Failed to allocate private memory.");
  88                 rte_errno = ENOMEM;
  89                 return -rte_errno;
  90         }
  91         priv->mmo_regex_qp_cap = attr->mmo_regex_qp_en;
  92         priv->mmo_regex_sq_cap = attr->mmo_regex_sq_en;
  93         priv->cdev = cdev;
  94         priv->nb_engines = 2; /* attr.regexp_num_of_engines */
  95         if (attr->regexp_version == MLX5_RXP_BF2_IDENTIFIER)
  96                 priv->is_bf2 = 1;
  97         /* Default RXP programming mode to Shared. */
  98         priv->prog_mode = MLX5_RXP_SHARED_PROG_MODE;
  99         mlx5_regex_get_name(name, cdev->dev);
 100         priv->regexdev = rte_regexdev_register(name);
 101         if (priv->regexdev == NULL) {
 102                 DRV_LOG(ERR, "Failed to register RegEx device.");
 103                 rte_errno = rte_errno ? rte_errno : EINVAL;
 104                 goto dev_error;
 105         }
 106         ret = mlx5_devx_uar_prepare(cdev, &priv->uar);
 107         if (ret)
 108                 goto error;
 109         priv->regexdev->dev_ops = &mlx5_regexdev_ops;
 110         priv->regexdev->enqueue = mlx5_regexdev_enqueue;
 111 #ifdef HAVE_MLX5_UMR_IMKEY
 112         if (!attr->umr_indirect_mkey_disabled &&
 113             !attr->umr_modify_entity_size_disabled)
 114                 priv->has_umr = 1;
 115         if (priv->has_umr)
 116                 priv->regexdev->enqueue = mlx5_regexdev_enqueue_gga;
 117 #endif
 118         priv->regexdev->dequeue = mlx5_regexdev_dequeue;
 119         priv->regexdev->device = cdev->dev;
 120         priv->regexdev->data->dev_private = priv;
 121         priv->regexdev->state = RTE_REGEXDEV_READY;
 122         DRV_LOG(INFO, "RegEx GGA is %s.",
 123                 priv->has_umr ? "supported" : "unsupported");
 124         return 0;
 125
 126 error:
 127         if (priv->regexdev)
 128                 rte_regexdev_unregister(priv->regexdev);
 129 dev_error:
 130         rte_free(priv);
 131         return -rte_errno;
 132 }
 133
 134 static int
 135 mlx5_regex_dev_remove(struct mlx5_common_device *cdev)
 136 {
 137         char name[RTE_REGEXDEV_NAME_MAX_LEN];
 138         struct rte_regexdev *dev;
 139         struct mlx5_regex_priv *priv = NULL;
 140
 141         mlx5_regex_get_name(name, cdev->dev);
 142         dev = rte_regexdev_get_device_by_name(name);
 143         if (!dev)
 144                 return 0;
 145         priv = dev->data->dev_private;
 146         if (priv) {
 147                 mlx5_devx_uar_release(&priv->uar);
 148                 if (priv->regexdev)
 149                         rte_regexdev_unregister(priv->regexdev);
 150                 rte_free(priv);
 151         }
 152         return 0;
 153 }
 154
 155 static const struct rte_pci_id mlx5_regex_pci_id_map[] = {
 156         {
 157                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
 158                                 PCI_DEVICE_ID_MELLANOX_CONNECTX6DXBF)
 159         },
 160         {
 161                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
 162                                 PCI_DEVICE_ID_MELLANOX_CONNECTX7BF)
 163         },
 164         {
 165                 .vendor_id = 0
 166         }
 167 };
 168
 169 static struct mlx5_class_driver mlx5_regex_driver = {
 170         .drv_class = MLX5_CLASS_REGEX,
 171         .name = RTE_STR(MLX5_REGEX_DRIVER_NAME),
 172         .id_table = mlx5_regex_pci_id_map,
 173         .probe = mlx5_regex_dev_probe,
 174         .remove = mlx5_regex_dev_remove,
 175 };
 176
 177 RTE_INIT(rte_mlx5_regex_init)
 178 {
 179         mlx5_common_init();
 180         if (mlx5_glue)
 181                 mlx5_class_driver_register(&mlx5_regex_driver);
 182 }
 183
 184 RTE_LOG_REGISTER_DEFAULT(mlx5_regex_logtype, NOTICE)
 185 RTE_PMD_EXPORT_NAME(MLX5_REGEX_DRIVER_NAME, __COUNTER__);
 186 RTE_PMD_REGISTER_PCI_TABLE(MLX5_REGEX_DRIVER_NAME, mlx5_regex_pci_id_map);
 187 RTE_PMD_REGISTER_KMOD_DEP(MLX5_REGEX_DRIVER_NAME, "* ib_uverbs & mlx5_core & mlx5_ib");