drivers/net/ionic/ionic_ethdev.c

   1 /* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
   2  * Copyright(c) 2018-2019 Pensando Systems, Inc. All rights reserved.
   3  */
   4
   5 #include <rte_pci.h>
   6 #include <rte_bus_pci.h>
   7 #include <rte_ethdev.h>
   8 #include <rte_ethdev_driver.h>
   9 #include <rte_malloc.h>
  10 #include <rte_ethdev_pci.h>
  11
  12 #include "ionic_logs.h"
  13 #include "ionic.h"
  14 #include "ionic_dev.h"
  15 #include "ionic_mac_api.h"
  16 #include "ionic_lif.h"
  17 #include "ionic_ethdev.h"
  18
  19 static int  eth_ionic_dev_init(struct rte_eth_dev *eth_dev, void *init_params);
  20 static int  eth_ionic_dev_uninit(struct rte_eth_dev *eth_dev);
  21
  22 int ionic_logtype;
  23
  24 static const struct rte_pci_id pci_id_ionic_map[] = {
  25         { RTE_PCI_DEVICE(IONIC_PENSANDO_VENDOR_ID, IONIC_DEV_ID_ETH_PF) },
  26         { RTE_PCI_DEVICE(IONIC_PENSANDO_VENDOR_ID, IONIC_DEV_ID_ETH_VF) },
  27         { RTE_PCI_DEVICE(IONIC_PENSANDO_VENDOR_ID, IONIC_DEV_ID_ETH_MGMT) },
  28         { .vendor_id = 0, /* sentinel */ },
  29 };
  30
  31 static const struct eth_dev_ops ionic_eth_dev_ops = {
  32 };
  33
  34 static int
  35 eth_ionic_dev_init(struct rte_eth_dev *eth_dev, void *init_params)
  36 {
  37         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
  38         struct ionic_lif *lif = IONIC_ETH_DEV_TO_LIF(eth_dev);
  39         struct ionic_adapter *adapter = (struct ionic_adapter *)init_params;
  40         int err;
  41
  42         IONIC_PRINT_CALL();
  43
  44         eth_dev->dev_ops = &ionic_eth_dev_ops;
  45
  46         /* Multi-process not supported, primary does initialization anyway */
  47         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
  48                 return 0;
  49
  50         rte_eth_copy_pci_info(eth_dev, pci_dev);
  51
  52         lif->index = adapter->nlifs;
  53         lif->eth_dev = eth_dev;
  54         lif->adapter = adapter;
  55         adapter->lifs[adapter->nlifs] = lif;
  56
  57         err = ionic_lif_alloc(lif);
  58         if (err) {
  59                 IONIC_PRINT(ERR, "Cannot allocate LIFs: %d, aborting",
  60                         err);
  61                 goto err;
  62         }
  63
  64         err = ionic_lif_init(lif);
  65         if (err) {
  66                 IONIC_PRINT(ERR, "Cannot init LIFs: %d, aborting", err);
  67                 goto err_free_lif;
  68         }
  69
  70         IONIC_PRINT(DEBUG, "Port %u initialized", eth_dev->data->port_id);
  71
  72         return 0;
  73
  74 err_free_lif:
  75         ionic_lif_free(lif);
  76 err:
  77         return err;
  78 }
  79
  80 static int
  81 eth_ionic_dev_uninit(struct rte_eth_dev *eth_dev)
  82 {
  83         struct ionic_lif *lif = IONIC_ETH_DEV_TO_LIF(eth_dev);
  84         struct ionic_adapter *adapter = lif->adapter;
  85
  86         IONIC_PRINT_CALL();
  87
  88         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
  89                 return 0;
  90
  91         adapter->lifs[lif->index] = NULL;
  92
  93         ionic_lif_deinit(lif);
  94         ionic_lif_free(lif);
  95
  96         eth_dev->dev_ops = NULL;
  97
  98         return 0;
  99 }
 100
 101 static int
 102 eth_ionic_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 103                 struct rte_pci_device *pci_dev)
 104 {
 105         char name[RTE_ETH_NAME_MAX_LEN];
 106         struct rte_mem_resource *resource;
 107         struct ionic_adapter *adapter;
 108         struct ionic_hw *hw;
 109         unsigned long i;
 110         int err;
 111
 112         /* Check structs (trigger error at compilation time) */
 113         ionic_struct_size_checks();
 114
 115         /* Multi-process not supported */
 116         if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
 117                 err = -EPERM;
 118                 goto err;
 119         }
 120
 121         IONIC_PRINT(DEBUG, "Initializing device %s",
 122                 pci_dev->device.name);
 123
 124         adapter = rte_zmalloc("ionic", sizeof(*adapter), 0);
 125         if (!adapter) {
 126                 IONIC_PRINT(ERR, "OOM");
 127                 err = -ENOMEM;
 128                 goto err;
 129         }
 130
 131         adapter->pci_dev = pci_dev;
 132         hw = &adapter->hw;
 133
 134         hw->device_id = pci_dev->id.device_id;
 135         hw->vendor_id = pci_dev->id.vendor_id;
 136
 137         err = ionic_init_mac(hw);
 138         if (err != 0) {
 139                 IONIC_PRINT(ERR, "Mac init failed: %d", err);
 140                 err = -EIO;
 141                 goto err_free_adapter;
 142         }
 143
 144         adapter->is_mgmt_nic = (pci_dev->id.device_id == IONIC_DEV_ID_ETH_MGMT);
 145
 146         adapter->num_bars = 0;
 147         for (i = 0; i < PCI_MAX_RESOURCE && i < IONIC_BARS_MAX; i++) {
 148                 resource = &pci_dev->mem_resource[i];
 149                 if (resource->phys_addr == 0 || resource->len == 0)
 150                         continue;
 151                 adapter->bars[adapter->num_bars].vaddr = resource->addr;
 152                 adapter->bars[adapter->num_bars].bus_addr = resource->phys_addr;
 153                 adapter->bars[adapter->num_bars].len = resource->len;
 154                 adapter->num_bars++;
 155         }
 156
 157         /* Discover ionic dev resources */
 158
 159         err = ionic_setup(adapter);
 160         if (err) {
 161                 IONIC_PRINT(ERR, "Cannot setup device: %d, aborting", err);
 162                 goto err_free_adapter;
 163         }
 164
 165         err = ionic_identify(adapter);
 166         if (err) {
 167                 IONIC_PRINT(ERR, "Cannot identify device: %d, aborting",
 168                         err);
 169                 goto err_free_adapter;
 170         }
 171
 172         err = ionic_init(adapter);
 173         if (err) {
 174                 IONIC_PRINT(ERR, "Cannot init device: %d, aborting", err);
 175                 goto err_free_adapter;
 176         }
 177
 178         /* Configure the ports */
 179         err = ionic_port_identify(adapter);
 180         if (err) {
 181                 IONIC_PRINT(ERR, "Cannot identify port: %d, aborting",
 182                         err);
 183                 goto err_free_adapter;
 184         }
 185
 186         err = ionic_port_init(adapter);
 187         if (err) {
 188                 IONIC_PRINT(ERR, "Cannot init port: %d, aborting", err);
 189                 goto err_free_adapter;
 190         }
 191
 192         /* Configure LIFs */
 193         err = ionic_lif_identify(adapter);
 194         if (err) {
 195                 IONIC_PRINT(ERR, "Cannot identify lif: %d, aborting", err);
 196                 goto err_free_adapter;
 197         }
 198
 199         /* Allocate and init LIFs */
 200         err = ionic_lifs_size(adapter);
 201         if (err) {
 202                 IONIC_PRINT(ERR, "Cannot size LIFs: %d, aborting", err);
 203                 goto err_free_adapter;
 204         }
 205
 206         adapter->nlifs = 0;
 207         for (i = 0; i < adapter->ident.dev.nlifs; i++) {
 208                 snprintf(name, sizeof(name), "net_%s_lif_%lu",
 209                         pci_dev->device.name, i);
 210
 211                 err = rte_eth_dev_create(&pci_dev->device, name,
 212                         sizeof(struct ionic_lif),
 213                         NULL, NULL,
 214                         eth_ionic_dev_init, adapter);
 215                 if (err) {
 216                         IONIC_PRINT(ERR, "Cannot create eth device for "
 217                                 "ionic lif %s", name);
 218                         break;
 219                 }
 220
 221                 adapter->nlifs++;
 222         }
 223
 224         return 0;
 225
 226 err_free_adapter:
 227         rte_free(adapter);
 228 err:
 229         return err;
 230 }
 231
 232 static int
 233 eth_ionic_pci_remove(struct rte_pci_device *pci_dev __rte_unused)
 234 {
 235         char name[RTE_ETH_NAME_MAX_LEN];
 236         struct ionic_adapter *adapter = NULL;
 237         struct rte_eth_dev *eth_dev;
 238         struct ionic_lif *lif;
 239         uint32_t i;
 240
 241         /* Adapter lookup is using (the first) eth_dev name */
 242         snprintf(name, sizeof(name), "net_%s_lif_0",
 243                 pci_dev->device.name);
 244
 245         eth_dev = rte_eth_dev_allocated(name);
 246         if (eth_dev) {
 247                 lif = IONIC_ETH_DEV_TO_LIF(eth_dev);
 248                 adapter = lif->adapter;
 249         }
 250
 251         if (adapter) {
 252                 for (i = 0; i < adapter->nlifs; i++) {
 253                         lif = adapter->lifs[i];
 254                         rte_eth_dev_destroy(lif->eth_dev, eth_ionic_dev_uninit);
 255                 }
 256
 257                 rte_free(adapter);
 258         }
 259
 260         return 0;
 261 }
 262
 263 static struct rte_pci_driver rte_ionic_pmd = {
 264         .id_table = pci_id_ionic_map,
 265         .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC,
 266         .probe = eth_ionic_pci_probe,
 267         .remove = eth_ionic_pci_remove,
 268 };
 269
 270 RTE_PMD_REGISTER_PCI(net_ionic, rte_ionic_pmd);
 271 RTE_PMD_REGISTER_PCI_TABLE(net_ionic, pci_id_ionic_map);
 272 RTE_PMD_REGISTER_KMOD_DEP(net_ionic, "* igb_uio | uio_pci_generic | vfio-pci");
 273
 274 RTE_INIT(ionic_init_log)
 275 {
 276         ionic_logtype = rte_log_register("pmd.net.ionic");
 277         if (ionic_logtype >= 0)
 278                 rte_log_set_level(ionic_logtype, RTE_LOG_NOTICE);
 279 }