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 /**
  35  * Interrupt handler triggered by NIC for handling
  36  * specific interrupt.
  37  *
  38  * @param param
  39  *  The address of parameter registered before.
  40  *
  41  * @return
  42  *  void
  43  */
  44 static void
  45 ionic_dev_interrupt_handler(void *param)
  46 {
  47         struct ionic_adapter *adapter = (struct ionic_adapter *)param;
  48         uint32_t i;
  49
  50         IONIC_PRINT(DEBUG, "->");
  51
  52         for (i = 0; i < adapter->nlifs; i++) {
  53                 if (adapter->lifs[i])
  54                         ionic_notifyq_handler(adapter->lifs[i], -1);
  55         }
  56 }
  57
  58 static int
  59 eth_ionic_dev_init(struct rte_eth_dev *eth_dev, void *init_params)
  60 {
  61         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
  62         struct ionic_lif *lif = IONIC_ETH_DEV_TO_LIF(eth_dev);
  63         struct ionic_adapter *adapter = (struct ionic_adapter *)init_params;
  64         int err;
  65
  66         IONIC_PRINT_CALL();
  67
  68         eth_dev->dev_ops = &ionic_eth_dev_ops;
  69
  70         /* Multi-process not supported, primary does initialization anyway */
  71         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
  72                 return 0;
  73
  74         rte_eth_copy_pci_info(eth_dev, pci_dev);
  75
  76         lif->index = adapter->nlifs;
  77         lif->eth_dev = eth_dev;
  78         lif->adapter = adapter;
  79         adapter->lifs[adapter->nlifs] = lif;
  80
  81         err = ionic_lif_alloc(lif);
  82         if (err) {
  83                 IONIC_PRINT(ERR, "Cannot allocate LIFs: %d, aborting",
  84                         err);
  85                 goto err;
  86         }
  87
  88         err = ionic_lif_init(lif);
  89         if (err) {
  90                 IONIC_PRINT(ERR, "Cannot init LIFs: %d, aborting", err);
  91                 goto err_free_lif;
  92         }
  93
  94         IONIC_PRINT(DEBUG, "Port %u initialized", eth_dev->data->port_id);
  95
  96         return 0;
  97
  98 err_free_lif:
  99         ionic_lif_free(lif);
 100 err:
 101         return err;
 102 }
 103
 104 static int
 105 eth_ionic_dev_uninit(struct rte_eth_dev *eth_dev)
 106 {
 107         struct ionic_lif *lif = IONIC_ETH_DEV_TO_LIF(eth_dev);
 108         struct ionic_adapter *adapter = lif->adapter;
 109
 110         IONIC_PRINT_CALL();
 111
 112         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 113                 return 0;
 114
 115         adapter->lifs[lif->index] = NULL;
 116
 117         ionic_lif_deinit(lif);
 118         ionic_lif_free(lif);
 119
 120         eth_dev->dev_ops = NULL;
 121
 122         return 0;
 123 }
 124
 125 static int
 126 ionic_configure_intr(struct ionic_adapter *adapter)
 127 {
 128         struct rte_pci_device *pci_dev = adapter->pci_dev;
 129         struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
 130         int err;
 131
 132         IONIC_PRINT(DEBUG, "Configuring %u intrs", adapter->nintrs);
 133
 134         if (rte_intr_efd_enable(intr_handle, adapter->nintrs)) {
 135                 IONIC_PRINT(ERR, "Fail to create eventfd");
 136                 return -1;
 137         }
 138
 139         if (rte_intr_dp_is_en(intr_handle))
 140                 IONIC_PRINT(DEBUG,
 141                         "Packet I/O interrupt on datapath is enabled");
 142
 143         if (!intr_handle->intr_vec) {
 144                 intr_handle->intr_vec = rte_zmalloc("intr_vec",
 145                         adapter->nintrs * sizeof(int), 0);
 146
 147                 if (!intr_handle->intr_vec) {
 148                         IONIC_PRINT(ERR, "Failed to allocate %u vectors",
 149                                 adapter->nintrs);
 150                         return -ENOMEM;
 151                 }
 152         }
 153
 154         err = rte_intr_callback_register(intr_handle,
 155                 ionic_dev_interrupt_handler,
 156                 adapter);
 157
 158         if (err) {
 159                 IONIC_PRINT(ERR,
 160                         "Failure registering interrupts handler (%d)",
 161                         err);
 162                 return err;
 163         }
 164
 165         /* enable intr mapping */
 166         err = rte_intr_enable(intr_handle);
 167
 168         if (err) {
 169                 IONIC_PRINT(ERR, "Failure enabling interrupts (%d)", err);
 170                 return err;
 171         }
 172
 173         return 0;
 174 }
 175
 176 static void
 177 ionic_unconfigure_intr(struct ionic_adapter *adapter)
 178 {
 179         struct rte_pci_device *pci_dev = adapter->pci_dev;
 180         struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
 181
 182         rte_intr_disable(intr_handle);
 183
 184         rte_intr_callback_unregister(intr_handle,
 185                 ionic_dev_interrupt_handler,
 186                 adapter);
 187 }
 188
 189 static int
 190 eth_ionic_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 191                 struct rte_pci_device *pci_dev)
 192 {
 193         char name[RTE_ETH_NAME_MAX_LEN];
 194         struct rte_mem_resource *resource;
 195         struct ionic_adapter *adapter;
 196         struct ionic_hw *hw;
 197         unsigned long i;
 198         int err;
 199
 200         /* Check structs (trigger error at compilation time) */
 201         ionic_struct_size_checks();
 202
 203         /* Multi-process not supported */
 204         if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
 205                 err = -EPERM;
 206                 goto err;
 207         }
 208
 209         IONIC_PRINT(DEBUG, "Initializing device %s",
 210                 pci_dev->device.name);
 211
 212         adapter = rte_zmalloc("ionic", sizeof(*adapter), 0);
 213         if (!adapter) {
 214                 IONIC_PRINT(ERR, "OOM");
 215                 err = -ENOMEM;
 216                 goto err;
 217         }
 218
 219         adapter->pci_dev = pci_dev;
 220         hw = &adapter->hw;
 221
 222         hw->device_id = pci_dev->id.device_id;
 223         hw->vendor_id = pci_dev->id.vendor_id;
 224
 225         err = ionic_init_mac(hw);
 226         if (err != 0) {
 227                 IONIC_PRINT(ERR, "Mac init failed: %d", err);
 228                 err = -EIO;
 229                 goto err_free_adapter;
 230         }
 231
 232         adapter->is_mgmt_nic = (pci_dev->id.device_id == IONIC_DEV_ID_ETH_MGMT);
 233
 234         adapter->num_bars = 0;
 235         for (i = 0; i < PCI_MAX_RESOURCE && i < IONIC_BARS_MAX; i++) {
 236                 resource = &pci_dev->mem_resource[i];
 237                 if (resource->phys_addr == 0 || resource->len == 0)
 238                         continue;
 239                 adapter->bars[adapter->num_bars].vaddr = resource->addr;
 240                 adapter->bars[adapter->num_bars].bus_addr = resource->phys_addr;
 241                 adapter->bars[adapter->num_bars].len = resource->len;
 242                 adapter->num_bars++;
 243         }
 244
 245         /* Discover ionic dev resources */
 246
 247         err = ionic_setup(adapter);
 248         if (err) {
 249                 IONIC_PRINT(ERR, "Cannot setup device: %d, aborting", err);
 250                 goto err_free_adapter;
 251         }
 252
 253         err = ionic_identify(adapter);
 254         if (err) {
 255                 IONIC_PRINT(ERR, "Cannot identify device: %d, aborting",
 256                         err);
 257                 goto err_free_adapter;
 258         }
 259
 260         err = ionic_init(adapter);
 261         if (err) {
 262                 IONIC_PRINT(ERR, "Cannot init device: %d, aborting", err);
 263                 goto err_free_adapter;
 264         }
 265
 266         /* Configure the ports */
 267         err = ionic_port_identify(adapter);
 268         if (err) {
 269                 IONIC_PRINT(ERR, "Cannot identify port: %d, aborting",
 270                         err);
 271                 goto err_free_adapter;
 272         }
 273
 274         err = ionic_port_init(adapter);
 275         if (err) {
 276                 IONIC_PRINT(ERR, "Cannot init port: %d, aborting", err);
 277                 goto err_free_adapter;
 278         }
 279
 280         /* Configure LIFs */
 281         err = ionic_lif_identify(adapter);
 282         if (err) {
 283                 IONIC_PRINT(ERR, "Cannot identify lif: %d, aborting", err);
 284                 goto err_free_adapter;
 285         }
 286
 287         /* Allocate and init LIFs */
 288         err = ionic_lifs_size(adapter);
 289         if (err) {
 290                 IONIC_PRINT(ERR, "Cannot size LIFs: %d, aborting", err);
 291                 goto err_free_adapter;
 292         }
 293
 294         adapter->nlifs = 0;
 295         for (i = 0; i < adapter->ident.dev.nlifs; i++) {
 296                 snprintf(name, sizeof(name), "net_%s_lif_%lu",
 297                         pci_dev->device.name, i);
 298
 299                 err = rte_eth_dev_create(&pci_dev->device, name,
 300                         sizeof(struct ionic_lif),
 301                         NULL, NULL,
 302                         eth_ionic_dev_init, adapter);
 303                 if (err) {
 304                         IONIC_PRINT(ERR, "Cannot create eth device for "
 305                                 "ionic lif %s", name);
 306                         break;
 307                 }
 308
 309                 adapter->nlifs++;
 310         }
 311
 312         err = ionic_configure_intr(adapter);
 313
 314         if (err) {
 315                 IONIC_PRINT(ERR, "Failed to configure interrupts");
 316                 goto err_free_adapter;
 317         }
 318
 319         return 0;
 320
 321 err_free_adapter:
 322         rte_free(adapter);
 323 err:
 324         return err;
 325 }
 326
 327 static int
 328 eth_ionic_pci_remove(struct rte_pci_device *pci_dev __rte_unused)
 329 {
 330         char name[RTE_ETH_NAME_MAX_LEN];
 331         struct ionic_adapter *adapter = NULL;
 332         struct rte_eth_dev *eth_dev;
 333         struct ionic_lif *lif;
 334         uint32_t i;
 335
 336         /* Adapter lookup is using (the first) eth_dev name */
 337         snprintf(name, sizeof(name), "net_%s_lif_0",
 338                 pci_dev->device.name);
 339
 340         eth_dev = rte_eth_dev_allocated(name);
 341         if (eth_dev) {
 342                 lif = IONIC_ETH_DEV_TO_LIF(eth_dev);
 343                 adapter = lif->adapter;
 344         }
 345
 346         if (adapter) {
 347                 ionic_unconfigure_intr(adapter);
 348
 349                 for (i = 0; i < adapter->nlifs; i++) {
 350                         lif = adapter->lifs[i];
 351                         rte_eth_dev_destroy(lif->eth_dev, eth_ionic_dev_uninit);
 352                 }
 353
 354                 rte_free(adapter);
 355         }
 356
 357         return 0;
 358 }
 359
 360 static struct rte_pci_driver rte_ionic_pmd = {
 361         .id_table = pci_id_ionic_map,
 362         .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC,
 363         .probe = eth_ionic_pci_probe,
 364         .remove = eth_ionic_pci_remove,
 365 };
 366
 367 RTE_PMD_REGISTER_PCI(net_ionic, rte_ionic_pmd);
 368 RTE_PMD_REGISTER_PCI_TABLE(net_ionic, pci_id_ionic_map);
 369 RTE_PMD_REGISTER_KMOD_DEP(net_ionic, "* igb_uio | uio_pci_generic | vfio-pci");
 370
 371 RTE_INIT(ionic_init_log)
 372 {
 373         ionic_logtype = rte_log_register("pmd.net.ionic");
 374         if (ionic_logtype >= 0)
 375                 rte_log_set_level(ionic_logtype, RTE_LOG_NOTICE);
 376 }