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_bus_pci.h> 9 #include <rte_pci.h> 10 #include <rte_regexdev.h> 11 #include <rte_regexdev_core.h> 12 #include <rte_regexdev_driver.h> 13 14 #include <mlx5_glue.h> 15 #include <mlx5_devx_cmds.h> 16 #include <mlx5_prm.h> 17 18 #include "mlx5_regex.h" 19 #include "mlx5_regex_utils.h" 20 #include "mlx5_rxp_csrs.h" 21 22 int mlx5_regex_logtype; 23 24 const struct rte_regexdev_ops mlx5_regexdev_ops = { 25 .dev_info_get = mlx5_regex_info_get, 26 }; 27 28 static struct ibv_device * 29 mlx5_regex_get_ib_device_match(struct rte_pci_addr *addr) 30 { 31 int n; 32 struct ibv_device **ibv_list = mlx5_glue->get_device_list(&n); 33 struct ibv_device *ibv_match = NULL; 34 35 if (!ibv_list) { 36 rte_errno = ENOSYS; 37 return NULL; 38 } 39 while (n-- > 0) { 40 struct rte_pci_addr pci_addr; 41 42 DRV_LOG(DEBUG, "Checking device \"%s\"..", ibv_list[n]->name); 43 if (mlx5_dev_to_pci_addr(ibv_list[n]->ibdev_path, &pci_addr)) 44 continue; 45 if (rte_pci_addr_cmp(addr, &pci_addr)) 46 continue; 47 ibv_match = ibv_list[n]; 48 break; 49 } 50 if (!ibv_match) 51 rte_errno = ENOENT; 52 mlx5_glue->free_device_list(ibv_list); 53 return ibv_match; 54 } 55 static int 56 mlx5_regex_engines_status(struct ibv_context *ctx, int num_engines) 57 { 58 uint32_t fpga_ident = 0; 59 int err; 60 int i; 61 62 for (i = 0; i < num_engines; i++) { 63 err = mlx5_devx_regex_register_read(ctx, i, 64 MLX5_RXP_CSR_IDENTIFIER, 65 &fpga_ident); 66 fpga_ident = (fpga_ident & (0x0000FFFF)); 67 if (err || fpga_ident != MLX5_RXP_IDENTIFIER) { 68 DRV_LOG(ERR, "Failed setup RXP %d err %d database " 69 "memory 0x%x", i, err, fpga_ident); 70 if (!err) 71 err = EINVAL; 72 return err; 73 } 74 } 75 return 0; 76 } 77 78 static void 79 mlx5_regex_get_name(char *name, struct rte_pci_device *pci_dev __rte_unused) 80 { 81 sprintf(name, "mlx5_regex_%02x:%02x.%02x", pci_dev->addr.bus, 82 pci_dev->addr.devid, pci_dev->addr.function); 83 } 84 85 static int 86 mlx5_regex_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, 87 struct rte_pci_device *pci_dev) 88 { 89 struct ibv_device *ibv; 90 struct mlx5_regex_priv *priv = NULL; 91 struct ibv_context *ctx = NULL; 92 struct mlx5_hca_attr attr; 93 char name[RTE_REGEXDEV_NAME_MAX_LEN]; 94 int ret; 95 96 ibv = mlx5_regex_get_ib_device_match(&pci_dev->addr); 97 if (!ibv) { 98 DRV_LOG(ERR, "No matching IB device for PCI slot " 99 PCI_PRI_FMT ".", pci_dev->addr.domain, 100 pci_dev->addr.bus, pci_dev->addr.devid, 101 pci_dev->addr.function); 102 return -rte_errno; 103 } 104 DRV_LOG(INFO, "PCI information matches for device \"%s\".", 105 ibv->name); 106 ctx = mlx5_glue->dv_open_device(ibv); 107 if (!ctx) { 108 DRV_LOG(ERR, "Failed to open IB device \"%s\".", ibv->name); 109 rte_errno = ENODEV; 110 return -rte_errno; 111 } 112 ret = mlx5_devx_cmd_query_hca_attr(ctx, &attr); 113 if (ret) { 114 DRV_LOG(ERR, "Unable to read HCA capabilities."); 115 rte_errno = ENOTSUP; 116 goto error; 117 } else if (!attr.regex || attr.regexp_num_of_engines == 0) { 118 DRV_LOG(ERR, "Not enough capabilities to support RegEx, maybe " 119 "old FW/OFED version?"); 120 rte_errno = ENOTSUP; 121 goto error; 122 } 123 if (mlx5_regex_engines_status(ctx, 2)) { 124 DRV_LOG(ERR, "RegEx engine error."); 125 rte_errno = ENOMEM; 126 goto error; 127 } 128 priv = rte_zmalloc("mlx5 regex device private", sizeof(*priv), 129 RTE_CACHE_LINE_SIZE); 130 if (!priv) { 131 DRV_LOG(ERR, "Failed to allocate private memory."); 132 rte_errno = ENOMEM; 133 goto error; 134 } 135 priv->ctx = ctx; 136 mlx5_regex_get_name(name, pci_dev); 137 priv->regexdev = rte_regexdev_register(name); 138 if (priv->regexdev == NULL) { 139 DRV_LOG(ERR, "Failed to register RegEx device."); 140 rte_errno = rte_errno ? rte_errno : EINVAL; 141 goto error; 142 } 143 priv->regexdev->dev_ops = &mlx5_regexdev_ops; 144 priv->regexdev->device = (struct rte_device *)pci_dev; 145 priv->regexdev->data->dev_private = priv; 146 return 0; 147 148 error: 149 if (ctx) 150 mlx5_glue->close_device(ctx); 151 if (priv) 152 rte_free(priv); 153 return -rte_errno; 154 } 155 156 static int 157 mlx5_regex_pci_remove(struct rte_pci_device *pci_dev) 158 { 159 char name[RTE_REGEXDEV_NAME_MAX_LEN]; 160 struct rte_regexdev *dev; 161 struct mlx5_regex_priv *priv = NULL; 162 163 mlx5_regex_get_name(name, pci_dev); 164 dev = rte_regexdev_get_device_by_name(name); 165 if (!dev) 166 return 0; 167 priv = dev->data->dev_private; 168 if (priv) { 169 if (priv->ctx) 170 mlx5_glue->close_device(priv->ctx); 171 if (priv->regexdev) 172 rte_regexdev_unregister(priv->regexdev); 173 rte_free(priv); 174 } 175 return 0; 176 } 177 178 static const struct rte_pci_id mlx5_regex_pci_id_map[] = { 179 { 180 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, 181 PCI_DEVICE_ID_MELLANOX_CONNECTX6DXBF) 182 }, 183 { 184 .vendor_id = 0 185 } 186 }; 187 188 static struct rte_pci_driver mlx5_regex_driver = { 189 .driver = { 190 .name = "mlx5_regex", 191 }, 192 .id_table = mlx5_regex_pci_id_map, 193 .probe = mlx5_regex_pci_probe, 194 .remove = mlx5_regex_pci_remove, 195 .drv_flags = 0, 196 }; 197 198 RTE_INIT(rte_mlx5_regex_init) 199 { 200 if (mlx5_glue) 201 rte_pci_register(&mlx5_regex_driver); 202 } 203 204 RTE_LOG_REGISTER(mlx5_regex_logtype, pmd.regex.mlx5, NOTICE) 205 RTE_PMD_EXPORT_NAME(net_mlx5_regex, __COUNTER__); 206 RTE_PMD_REGISTER_PCI_TABLE(net_mlx5_regex, mlx5_regex_pci_id_map); 207 RTE_PMD_REGISTER_KMOD_DEP(net_mlx5_regex, "* ib_uverbs & mlx5_core & mlx5_ib"); 208