drivers/net/sfc/sfc_ethdev.c

   1 /*-
   2  * Copyright (c) 2016 Solarflare Communications Inc.
   3  * All rights reserved.
   4  *
   5  * This software was jointly developed between OKTET Labs (under contract
   6  * for Solarflare) and Solarflare Communications, Inc.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright notice,
  12  *    this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright notice,
  14  *    this list of conditions and the following disclaimer in the documentation
  15  *    and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  18  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  19  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  24  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  25  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  26  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  27  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include <rte_dev.h>
  31 #include <rte_ethdev.h>
  32 #include <rte_pci.h>
  33
  34 #include "efx.h"
  35
  36 #include "sfc.h"
  37 #include "sfc_debug.h"
  38 #include "sfc_log.h"
  39 #include "sfc_kvargs.h"
  40
  41
  42 static void
  43 sfc_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
  44 {
  45         struct sfc_adapter *sa = dev->data->dev_private;
  46
  47         sfc_log_init(sa, "entry");
  48
  49         dev_info->pci_dev = RTE_DEV_TO_PCI(dev->device);
  50 }
  51
  52 static int
  53 sfc_dev_configure(struct rte_eth_dev *dev)
  54 {
  55         struct rte_eth_dev_data *dev_data = dev->data;
  56         struct sfc_adapter *sa = dev_data->dev_private;
  57         int rc;
  58
  59         sfc_log_init(sa, "entry n_rxq=%u n_txq=%u",
  60                      dev_data->nb_rx_queues, dev_data->nb_tx_queues);
  61
  62         sfc_adapter_lock(sa);
  63         switch (sa->state) {
  64         case SFC_ADAPTER_CONFIGURED:
  65                 sfc_close(sa);
  66                 SFC_ASSERT(sa->state == SFC_ADAPTER_INITIALIZED);
  67                 /* FALLTHROUGH */
  68         case SFC_ADAPTER_INITIALIZED:
  69                 rc = sfc_configure(sa);
  70                 break;
  71         default:
  72                 sfc_err(sa, "unexpected adapter state %u to configure",
  73                         sa->state);
  74                 rc = EINVAL;
  75                 break;
  76         }
  77         sfc_adapter_unlock(sa);
  78
  79         sfc_log_init(sa, "done %d", rc);
  80         SFC_ASSERT(rc >= 0);
  81         return -rc;
  82 }
  83
  84 static void
  85 sfc_dev_close(struct rte_eth_dev *dev)
  86 {
  87         struct sfc_adapter *sa = dev->data->dev_private;
  88
  89         sfc_log_init(sa, "entry");
  90
  91         sfc_adapter_lock(sa);
  92         switch (sa->state) {
  93         case SFC_ADAPTER_CONFIGURED:
  94                 sfc_close(sa);
  95                 SFC_ASSERT(sa->state == SFC_ADAPTER_INITIALIZED);
  96                 /* FALLTHROUGH */
  97         case SFC_ADAPTER_INITIALIZED:
  98                 break;
  99         default:
 100                 sfc_err(sa, "unexpected adapter state %u on close", sa->state);
 101                 break;
 102         }
 103         sfc_adapter_unlock(sa);
 104
 105         sfc_log_init(sa, "done");
 106 }
 107
 108 static const struct eth_dev_ops sfc_eth_dev_ops = {
 109         .dev_configure                  = sfc_dev_configure,
 110         .dev_close                      = sfc_dev_close,
 111         .dev_infos_get                  = sfc_dev_infos_get,
 112 };
 113
 114 static int
 115 sfc_eth_dev_init(struct rte_eth_dev *dev)
 116 {
 117         struct sfc_adapter *sa = dev->data->dev_private;
 118         struct rte_pci_device *pci_dev = SFC_DEV_TO_PCI(dev);
 119         int rc;
 120         const efx_nic_cfg_t *encp;
 121         const struct ether_addr *from;
 122
 123         /* Required for logging */
 124         sa->eth_dev = dev;
 125
 126         /* Copy PCI device info to the dev->data */
 127         rte_eth_copy_pci_info(dev, pci_dev);
 128
 129         rc = sfc_kvargs_parse(sa);
 130         if (rc != 0)
 131                 goto fail_kvargs_parse;
 132
 133         rc = sfc_kvargs_process(sa, SFC_KVARG_DEBUG_INIT,
 134                                 sfc_kvarg_bool_handler, &sa->debug_init);
 135         if (rc != 0)
 136                 goto fail_kvarg_debug_init;
 137
 138         sfc_log_init(sa, "entry");
 139
 140         dev->data->mac_addrs = rte_zmalloc("sfc", ETHER_ADDR_LEN, 0);
 141         if (dev->data->mac_addrs == NULL) {
 142                 rc = ENOMEM;
 143                 goto fail_mac_addrs;
 144         }
 145
 146         sfc_adapter_lock_init(sa);
 147         sfc_adapter_lock(sa);
 148
 149         sfc_log_init(sa, "attaching");
 150         rc = sfc_attach(sa);
 151         if (rc != 0)
 152                 goto fail_attach;
 153
 154         encp = efx_nic_cfg_get(sa->nic);
 155
 156         /*
 157          * The arguments are really reverse order in comparison to
 158          * Linux kernel. Copy from NIC config to Ethernet device data.
 159          */
 160         from = (const struct ether_addr *)(encp->enc_mac_addr);
 161         ether_addr_copy(from, &dev->data->mac_addrs[0]);
 162
 163         dev->dev_ops = &sfc_eth_dev_ops;
 164
 165         sfc_adapter_unlock(sa);
 166
 167         sfc_log_init(sa, "done");
 168         return 0;
 169
 170 fail_attach:
 171         sfc_adapter_unlock(sa);
 172         sfc_adapter_lock_fini(sa);
 173         rte_free(dev->data->mac_addrs);
 174         dev->data->mac_addrs = NULL;
 175
 176 fail_mac_addrs:
 177 fail_kvarg_debug_init:
 178         sfc_kvargs_cleanup(sa);
 179
 180 fail_kvargs_parse:
 181         sfc_log_init(sa, "failed %d", rc);
 182         SFC_ASSERT(rc > 0);
 183         return -rc;
 184 }
 185
 186 static int
 187 sfc_eth_dev_uninit(struct rte_eth_dev *dev)
 188 {
 189         struct sfc_adapter *sa = dev->data->dev_private;
 190
 191         sfc_log_init(sa, "entry");
 192
 193         sfc_adapter_lock(sa);
 194
 195         sfc_detach(sa);
 196
 197         rte_free(dev->data->mac_addrs);
 198         dev->data->mac_addrs = NULL;
 199
 200         dev->dev_ops = NULL;
 201
 202         sfc_kvargs_cleanup(sa);
 203
 204         sfc_adapter_unlock(sa);
 205         sfc_adapter_lock_fini(sa);
 206
 207         sfc_log_init(sa, "done");
 208
 209         /* Required for logging, so cleanup last */
 210         sa->eth_dev = NULL;
 211         return 0;
 212 }
 213
 214 static const struct rte_pci_id pci_id_sfc_efx_map[] = {
 215         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_FARMINGDALE) },
 216         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_GREENPORT) },
 217         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_MEDFORD) },
 218         { .vendor_id = 0 /* sentinel */ }
 219 };
 220
 221 static struct eth_driver sfc_efx_pmd = {
 222         .pci_drv = {
 223                 .id_table = pci_id_sfc_efx_map,
 224                 .drv_flags =
 225                         RTE_PCI_DRV_NEED_MAPPING,
 226                 .probe = rte_eth_dev_pci_probe,
 227                 .remove = rte_eth_dev_pci_remove,
 228         },
 229         .eth_dev_init = sfc_eth_dev_init,
 230         .eth_dev_uninit = sfc_eth_dev_uninit,
 231         .dev_private_size = sizeof(struct sfc_adapter),
 232 };
 233
 234 RTE_PMD_REGISTER_PCI(net_sfc_efx, sfc_efx_pmd.pci_drv);
 235 RTE_PMD_REGISTER_PCI_TABLE(net_sfc_efx, pci_id_sfc_efx_map);
 236 RTE_PMD_REGISTER_PARAM_STRING(net_sfc_efx,
 237         SFC_KVARG_DEBUG_INIT "=" SFC_KVARG_VALUES_BOOL);