drivers/net/thunderx/nicvf_ethdev.c

   1 /*
   2  *   BSD LICENSE
   3  *
   4  *   Copyright (C) Cavium networks Ltd. 2016.
   5  *
   6  *   Redistribution and use in source and binary forms, with or without
   7  *   modification, are permitted provided that the following conditions
   8  *   are met:
   9  *
  10  *     * Redistributions of source code must retain the above copyright
  11  *       notice, this list of conditions and the following disclaimer.
  12  *     * Redistributions in binary form must reproduce the above copyright
  13  *       notice, this list of conditions and the following disclaimer in
  14  *       the documentation and/or other materials provided with the
  15  *       distribution.
  16  *     * Neither the name of Cavium networks nor the names of its
  17  *       contributors may be used to endorse or promote products derived
  18  *       from this software without specific prior written permission.
  19  *
  20  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <assert.h>
  34 #include <stdio.h>
  35 #include <stdbool.h>
  36 #include <errno.h>
  37 #include <stdint.h>
  38 #include <string.h>
  39 #include <unistd.h>
  40 #include <stdarg.h>
  41 #include <inttypes.h>
  42 #include <netinet/in.h>
  43 #include <sys/queue.h>
  44 #include <sys/timerfd.h>
  45
  46 #include <rte_alarm.h>
  47 #include <rte_atomic.h>
  48 #include <rte_branch_prediction.h>
  49 #include <rte_byteorder.h>
  50 #include <rte_common.h>
  51 #include <rte_cycles.h>
  52 #include <rte_debug.h>
  53 #include <rte_dev.h>
  54 #include <rte_eal.h>
  55 #include <rte_ether.h>
  56 #include <rte_ethdev.h>
  57 #include <rte_interrupts.h>
  58 #include <rte_log.h>
  59 #include <rte_memory.h>
  60 #include <rte_memzone.h>
  61 #include <rte_malloc.h>
  62 #include <rte_random.h>
  63 #include <rte_pci.h>
  64 #include <rte_tailq.h>
  65
  66 #include "base/nicvf_plat.h"
  67
  68 #include "nicvf_ethdev.h"
  69
  70 #include "nicvf_logs.h"
  71
  72 static inline int
  73 nicvf_atomic_write_link_status(struct rte_eth_dev *dev,
  74                                struct rte_eth_link *link)
  75 {
  76         struct rte_eth_link *dst = &dev->data->dev_link;
  77         struct rte_eth_link *src = link;
  78
  79         if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
  80                 *(uint64_t *)src) == 0)
  81                 return -1;
  82
  83         return 0;
  84 }
  85
  86 static inline void
  87 nicvf_set_eth_link_status(struct nicvf *nic, struct rte_eth_link *link)
  88 {
  89         link->link_status = nic->link_up;
  90         link->link_duplex = ETH_LINK_AUTONEG;
  91         if (nic->duplex == NICVF_HALF_DUPLEX)
  92                 link->link_duplex = ETH_LINK_HALF_DUPLEX;
  93         else if (nic->duplex == NICVF_FULL_DUPLEX)
  94                 link->link_duplex = ETH_LINK_FULL_DUPLEX;
  95         link->link_speed = nic->speed;
  96         link->link_autoneg = ETH_LINK_SPEED_AUTONEG;
  97 }
  98
  99 static void
 100 nicvf_interrupt(void *arg)
 101 {
 102         struct nicvf *nic = arg;
 103
 104         if (nicvf_reg_poll_interrupts(nic) == NIC_MBOX_MSG_BGX_LINK_CHANGE) {
 105                 if (nic->eth_dev->data->dev_conf.intr_conf.lsc)
 106                         nicvf_set_eth_link_status(nic,
 107                                         &nic->eth_dev->data->dev_link);
 108                 _rte_eth_dev_callback_process(nic->eth_dev,
 109                                 RTE_ETH_EVENT_INTR_LSC);
 110         }
 111
 112         rte_eal_alarm_set(NICVF_INTR_POLL_INTERVAL_MS * 1000,
 113                                 nicvf_interrupt, nic);
 114 }
 115
 116 static int
 117 nicvf_periodic_alarm_start(struct nicvf *nic)
 118 {
 119         return rte_eal_alarm_set(NICVF_INTR_POLL_INTERVAL_MS * 1000,
 120                                         nicvf_interrupt, nic);
 121 }
 122
 123 static int
 124 nicvf_periodic_alarm_stop(struct nicvf *nic)
 125 {
 126         return rte_eal_alarm_cancel(nicvf_interrupt, nic);
 127 }
 128
 129 /*
 130  * Return 0 means link status changed, -1 means not changed
 131  */
 132 static int
 133 nicvf_dev_link_update(struct rte_eth_dev *dev,
 134                       int wait_to_complete __rte_unused)
 135 {
 136         struct rte_eth_link link;
 137         struct nicvf *nic = nicvf_pmd_priv(dev);
 138
 139         PMD_INIT_FUNC_TRACE();
 140
 141         memset(&link, 0, sizeof(link));
 142         nicvf_set_eth_link_status(nic, &link);
 143         return nicvf_atomic_write_link_status(dev, &link);
 144 }
 145
 146 /* Initialize and register driver with DPDK Application */
 147 static const struct eth_dev_ops nicvf_eth_dev_ops = {
 148         .link_update              = nicvf_dev_link_update,
 149 };
 150
 151 static int
 152 nicvf_eth_dev_init(struct rte_eth_dev *eth_dev)
 153 {
 154         int ret;
 155         struct rte_pci_device *pci_dev;
 156         struct nicvf *nic = nicvf_pmd_priv(eth_dev);
 157
 158         PMD_INIT_FUNC_TRACE();
 159
 160         eth_dev->dev_ops = &nicvf_eth_dev_ops;
 161
 162         pci_dev = eth_dev->pci_dev;
 163         rte_eth_copy_pci_info(eth_dev, pci_dev);
 164
 165         nic->device_id = pci_dev->id.device_id;
 166         nic->vendor_id = pci_dev->id.vendor_id;
 167         nic->subsystem_device_id = pci_dev->id.subsystem_device_id;
 168         nic->subsystem_vendor_id = pci_dev->id.subsystem_vendor_id;
 169         nic->eth_dev = eth_dev;
 170
 171         PMD_INIT_LOG(DEBUG, "nicvf: device (%x:%x) %u:%u:%u:%u",
 172                         pci_dev->id.vendor_id, pci_dev->id.device_id,
 173                         pci_dev->addr.domain, pci_dev->addr.bus,
 174                         pci_dev->addr.devid, pci_dev->addr.function);
 175
 176         nic->reg_base = (uintptr_t)pci_dev->mem_resource[0].addr;
 177         if (!nic->reg_base) {
 178                 PMD_INIT_LOG(ERR, "Failed to map BAR0");
 179                 ret = -ENODEV;
 180                 goto fail;
 181         }
 182
 183         nicvf_disable_all_interrupts(nic);
 184
 185         ret = nicvf_periodic_alarm_start(nic);
 186         if (ret) {
 187                 PMD_INIT_LOG(ERR, "Failed to start period alarm");
 188                 goto fail;
 189         }
 190
 191         ret = nicvf_mbox_check_pf_ready(nic);
 192         if (ret) {
 193                 PMD_INIT_LOG(ERR, "Failed to get ready message from PF");
 194                 goto alarm_fail;
 195         } else {
 196                 PMD_INIT_LOG(INFO,
 197                         "node=%d vf=%d mode=%s sqs=%s loopback_supported=%s",
 198                         nic->node, nic->vf_id,
 199                         nic->tns_mode == NIC_TNS_MODE ? "tns" : "tns-bypass",
 200                         nic->sqs_mode ? "true" : "false",
 201                         nic->loopback_supported ? "true" : "false"
 202                         );
 203         }
 204
 205         if (nic->sqs_mode) {
 206                 PMD_INIT_LOG(INFO, "Unsupported SQS VF detected, Detaching...");
 207                 /* Detach port by returning Positive error number */
 208                 ret = ENOTSUP;
 209                 goto alarm_fail;
 210         }
 211
 212         eth_dev->data->mac_addrs = rte_zmalloc("mac_addr", ETHER_ADDR_LEN, 0);
 213         if (eth_dev->data->mac_addrs == NULL) {
 214                 PMD_INIT_LOG(ERR, "Failed to allocate memory for mac addr");
 215                 ret = -ENOMEM;
 216                 goto alarm_fail;
 217         }
 218         if (is_zero_ether_addr((struct ether_addr *)nic->mac_addr))
 219                 eth_random_addr(&nic->mac_addr[0]);
 220
 221         ether_addr_copy((struct ether_addr *)nic->mac_addr,
 222                         &eth_dev->data->mac_addrs[0]);
 223
 224         ret = nicvf_mbox_set_mac_addr(nic, nic->mac_addr);
 225         if (ret) {
 226                 PMD_INIT_LOG(ERR, "Failed to set mac addr");
 227                 goto malloc_fail;
 228         }
 229
 230         ret = nicvf_base_init(nic);
 231         if (ret) {
 232                 PMD_INIT_LOG(ERR, "Failed to execute nicvf_base_init");
 233                 goto malloc_fail;
 234         }
 235
 236         ret = nicvf_mbox_get_rss_size(nic);
 237         if (ret) {
 238                 PMD_INIT_LOG(ERR, "Failed to get rss table size");
 239                 goto malloc_fail;
 240         }
 241
 242         PMD_INIT_LOG(INFO, "Port %d (%x:%x) mac=%02x:%02x:%02x:%02x:%02x:%02x",
 243                 eth_dev->data->port_id, nic->vendor_id, nic->device_id,
 244                 nic->mac_addr[0], nic->mac_addr[1], nic->mac_addr[2],
 245                 nic->mac_addr[3], nic->mac_addr[4], nic->mac_addr[5]);
 246
 247         return 0;
 248
 249 malloc_fail:
 250         rte_free(eth_dev->data->mac_addrs);
 251 alarm_fail:
 252         nicvf_periodic_alarm_stop(nic);
 253 fail:
 254         return ret;
 255 }
 256
 257 static const struct rte_pci_id pci_id_nicvf_map[] = {
 258         {
 259                 .class_id = RTE_CLASS_ANY_ID,
 260                 .vendor_id = PCI_VENDOR_ID_CAVIUM,
 261                 .device_id = PCI_DEVICE_ID_THUNDERX_PASS1_NICVF,
 262                 .subsystem_vendor_id = PCI_VENDOR_ID_CAVIUM,
 263                 .subsystem_device_id = PCI_SUB_DEVICE_ID_THUNDERX_PASS1_NICVF,
 264         },
 265         {
 266                 .class_id = RTE_CLASS_ANY_ID,
 267                 .vendor_id = PCI_VENDOR_ID_CAVIUM,
 268                 .device_id = PCI_DEVICE_ID_THUNDERX_PASS2_NICVF,
 269                 .subsystem_vendor_id = PCI_VENDOR_ID_CAVIUM,
 270                 .subsystem_device_id = PCI_SUB_DEVICE_ID_THUNDERX_PASS2_NICVF,
 271         },
 272         {
 273                 .vendor_id = 0,
 274         },
 275 };
 276
 277 static struct eth_driver rte_nicvf_pmd = {
 278         .pci_drv = {
 279                 .name = "rte_nicvf_pmd",
 280                 .id_table = pci_id_nicvf_map,
 281                 .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC,
 282         },
 283         .eth_dev_init = nicvf_eth_dev_init,
 284         .dev_private_size = sizeof(struct nicvf),
 285 };
 286
 287 static int
 288 rte_nicvf_pmd_init(const char *name __rte_unused, const char *para __rte_unused)
 289 {
 290         PMD_INIT_FUNC_TRACE();
 291         PMD_INIT_LOG(INFO, "librte_pmd_thunderx nicvf version %s",
 292                         THUNDERX_NICVF_PMD_VERSION);
 293
 294         rte_eth_driver_register(&rte_nicvf_pmd);
 295         return 0;
 296 }
 297
 298 static struct rte_driver rte_nicvf_driver = {
 299         .name = "nicvf_driver",
 300         .type = PMD_PDEV,
 301         .init = rte_nicvf_pmd_init,
 302 };
 303
 304 PMD_REGISTER_DRIVER(rte_nicvf_driver);