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 static int
 147 nicvf_dev_get_reg_length(struct rte_eth_dev *dev  __rte_unused)
 148 {
 149         return nicvf_reg_get_count();
 150 }
 151
 152 static int
 153 nicvf_dev_get_regs(struct rte_eth_dev *dev, struct rte_dev_reg_info *regs)
 154 {
 155         uint64_t *data = regs->data;
 156         struct nicvf *nic = nicvf_pmd_priv(dev);
 157
 158         if (data == NULL)
 159                 return -EINVAL;
 160
 161         /* Support only full register dump */
 162         if ((regs->length == 0) ||
 163                 (regs->length == (uint32_t)nicvf_reg_get_count())) {
 164                 regs->version = nic->vendor_id << 16 | nic->device_id;
 165                 nicvf_reg_dump(nic, data);
 166                 return 0;
 167         }
 168         return -ENOTSUP;
 169 }
 170
 171 /* Initialize and register driver with DPDK Application */
 172 static const struct eth_dev_ops nicvf_eth_dev_ops = {
 173         .link_update              = nicvf_dev_link_update,
 174         .get_reg_length           = nicvf_dev_get_reg_length,
 175         .get_reg                  = nicvf_dev_get_regs,
 176 };
 177
 178 static int
 179 nicvf_eth_dev_init(struct rte_eth_dev *eth_dev)
 180 {
 181         int ret;
 182         struct rte_pci_device *pci_dev;
 183         struct nicvf *nic = nicvf_pmd_priv(eth_dev);
 184
 185         PMD_INIT_FUNC_TRACE();
 186
 187         eth_dev->dev_ops = &nicvf_eth_dev_ops;
 188
 189         pci_dev = eth_dev->pci_dev;
 190         rte_eth_copy_pci_info(eth_dev, pci_dev);
 191
 192         nic->device_id = pci_dev->id.device_id;
 193         nic->vendor_id = pci_dev->id.vendor_id;
 194         nic->subsystem_device_id = pci_dev->id.subsystem_device_id;
 195         nic->subsystem_vendor_id = pci_dev->id.subsystem_vendor_id;
 196         nic->eth_dev = eth_dev;
 197
 198         PMD_INIT_LOG(DEBUG, "nicvf: device (%x:%x) %u:%u:%u:%u",
 199                         pci_dev->id.vendor_id, pci_dev->id.device_id,
 200                         pci_dev->addr.domain, pci_dev->addr.bus,
 201                         pci_dev->addr.devid, pci_dev->addr.function);
 202
 203         nic->reg_base = (uintptr_t)pci_dev->mem_resource[0].addr;
 204         if (!nic->reg_base) {
 205                 PMD_INIT_LOG(ERR, "Failed to map BAR0");
 206                 ret = -ENODEV;
 207                 goto fail;
 208         }
 209
 210         nicvf_disable_all_interrupts(nic);
 211
 212         ret = nicvf_periodic_alarm_start(nic);
 213         if (ret) {
 214                 PMD_INIT_LOG(ERR, "Failed to start period alarm");
 215                 goto fail;
 216         }
 217
 218         ret = nicvf_mbox_check_pf_ready(nic);
 219         if (ret) {
 220                 PMD_INIT_LOG(ERR, "Failed to get ready message from PF");
 221                 goto alarm_fail;
 222         } else {
 223                 PMD_INIT_LOG(INFO,
 224                         "node=%d vf=%d mode=%s sqs=%s loopback_supported=%s",
 225                         nic->node, nic->vf_id,
 226                         nic->tns_mode == NIC_TNS_MODE ? "tns" : "tns-bypass",
 227                         nic->sqs_mode ? "true" : "false",
 228                         nic->loopback_supported ? "true" : "false"
 229                         );
 230         }
 231
 232         if (nic->sqs_mode) {
 233                 PMD_INIT_LOG(INFO, "Unsupported SQS VF detected, Detaching...");
 234                 /* Detach port by returning Positive error number */
 235                 ret = ENOTSUP;
 236                 goto alarm_fail;
 237         }
 238
 239         eth_dev->data->mac_addrs = rte_zmalloc("mac_addr", ETHER_ADDR_LEN, 0);
 240         if (eth_dev->data->mac_addrs == NULL) {
 241                 PMD_INIT_LOG(ERR, "Failed to allocate memory for mac addr");
 242                 ret = -ENOMEM;
 243                 goto alarm_fail;
 244         }
 245         if (is_zero_ether_addr((struct ether_addr *)nic->mac_addr))
 246                 eth_random_addr(&nic->mac_addr[0]);
 247
 248         ether_addr_copy((struct ether_addr *)nic->mac_addr,
 249                         &eth_dev->data->mac_addrs[0]);
 250
 251         ret = nicvf_mbox_set_mac_addr(nic, nic->mac_addr);
 252         if (ret) {
 253                 PMD_INIT_LOG(ERR, "Failed to set mac addr");
 254                 goto malloc_fail;
 255         }
 256
 257         ret = nicvf_base_init(nic);
 258         if (ret) {
 259                 PMD_INIT_LOG(ERR, "Failed to execute nicvf_base_init");
 260                 goto malloc_fail;
 261         }
 262
 263         ret = nicvf_mbox_get_rss_size(nic);
 264         if (ret) {
 265                 PMD_INIT_LOG(ERR, "Failed to get rss table size");
 266                 goto malloc_fail;
 267         }
 268
 269         PMD_INIT_LOG(INFO, "Port %d (%x:%x) mac=%02x:%02x:%02x:%02x:%02x:%02x",
 270                 eth_dev->data->port_id, nic->vendor_id, nic->device_id,
 271                 nic->mac_addr[0], nic->mac_addr[1], nic->mac_addr[2],
 272                 nic->mac_addr[3], nic->mac_addr[4], nic->mac_addr[5]);
 273
 274         return 0;
 275
 276 malloc_fail:
 277         rte_free(eth_dev->data->mac_addrs);
 278 alarm_fail:
 279         nicvf_periodic_alarm_stop(nic);
 280 fail:
 281         return ret;
 282 }
 283
 284 static const struct rte_pci_id pci_id_nicvf_map[] = {
 285         {
 286                 .class_id = RTE_CLASS_ANY_ID,
 287                 .vendor_id = PCI_VENDOR_ID_CAVIUM,
 288                 .device_id = PCI_DEVICE_ID_THUNDERX_PASS1_NICVF,
 289                 .subsystem_vendor_id = PCI_VENDOR_ID_CAVIUM,
 290                 .subsystem_device_id = PCI_SUB_DEVICE_ID_THUNDERX_PASS1_NICVF,
 291         },
 292         {
 293                 .class_id = RTE_CLASS_ANY_ID,
 294                 .vendor_id = PCI_VENDOR_ID_CAVIUM,
 295                 .device_id = PCI_DEVICE_ID_THUNDERX_PASS2_NICVF,
 296                 .subsystem_vendor_id = PCI_VENDOR_ID_CAVIUM,
 297                 .subsystem_device_id = PCI_SUB_DEVICE_ID_THUNDERX_PASS2_NICVF,
 298         },
 299         {
 300                 .vendor_id = 0,
 301         },
 302 };
 303
 304 static struct eth_driver rte_nicvf_pmd = {
 305         .pci_drv = {
 306                 .name = "rte_nicvf_pmd",
 307                 .id_table = pci_id_nicvf_map,
 308                 .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC,
 309         },
 310         .eth_dev_init = nicvf_eth_dev_init,
 311         .dev_private_size = sizeof(struct nicvf),
 312 };
 313
 314 static int
 315 rte_nicvf_pmd_init(const char *name __rte_unused, const char *para __rte_unused)
 316 {
 317         PMD_INIT_FUNC_TRACE();
 318         PMD_INIT_LOG(INFO, "librte_pmd_thunderx nicvf version %s",
 319                         THUNDERX_NICVF_PMD_VERSION);
 320
 321         rte_eth_driver_register(&rte_nicvf_pmd);
 322         return 0;
 323 }
 324
 325 static struct rte_driver rte_nicvf_driver = {
 326         .name = "nicvf_driver",
 327         .type = PMD_PDEV,
 328         .init = rte_nicvf_pmd_init,
 329 };
 330
 331 PMD_REGISTER_DRIVER(rte_nicvf_driver);