drivers/net/bnxt/bnxt_ethdev.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) Broadcom Limited.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Broadcom Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <inttypes.h>
  35 #include <stdbool.h>
  36
  37 #include <rte_dev.h>
  38 #include <rte_ethdev.h>
  39 #include <rte_malloc.h>
  40 #include <rte_cycles.h>
  41
  42 #include "bnxt.h"
  43 #include "bnxt_hwrm.h"
  44 #include "bnxt_rxq.h"
  45 #include "bnxt_rxr.h"
  46 #include "bnxt_stats.h"
  47 #include "bnxt_txq.h"
  48 #include "bnxt_txr.h"
  49
  50 #define DRV_MODULE_NAME         "bnxt"
  51 static const char bnxt_version[] =
  52         "Broadcom Cumulus driver " DRV_MODULE_NAME "\n";
  53
  54 static struct rte_pci_id bnxt_pci_id_map[] = {
  55 #define RTE_PCI_DEV_ID_DECL_BNXT(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
  56 #include "rte_pci_dev_ids.h"
  57         {.device_id = 0},
  58 };
  59
  60 static void bnxt_dev_close_op(struct rte_eth_dev *eth_dev)
  61 {
  62         struct bnxt *bp = (struct bnxt *)eth_dev->data->dev_private;
  63
  64         rte_free(eth_dev->data->mac_addrs);
  65         bnxt_free_hwrm_resources(bp);
  66 }
  67
  68 /*
  69  * Device configuration and status function
  70  */
  71
  72 static void bnxt_dev_info_get_op(struct rte_eth_dev *eth_dev,
  73                                   struct rte_eth_dev_info *dev_info)
  74 {
  75         struct bnxt *bp = (struct bnxt *)eth_dev->data->dev_private;
  76         uint16_t max_vnics, i, j, vpool, vrxq;
  77
  78         /* MAC Specifics */
  79         dev_info->max_mac_addrs = MAX_NUM_MAC_ADDR;
  80         dev_info->max_hash_mac_addrs = 0;
  81
  82         /* PF/VF specifics */
  83         if (BNXT_PF(bp)) {
  84                 dev_info->max_rx_queues = bp->pf.max_rx_rings;
  85                 dev_info->max_tx_queues = bp->pf.max_tx_rings;
  86                 dev_info->max_vfs = bp->pf.active_vfs;
  87                 dev_info->reta_size = bp->pf.max_rsscos_ctx;
  88                 max_vnics = bp->pf.max_vnics;
  89         } else {
  90                 dev_info->max_rx_queues = bp->vf.max_rx_rings;
  91                 dev_info->max_tx_queues = bp->vf.max_tx_rings;
  92                 dev_info->reta_size = bp->vf.max_rsscos_ctx;
  93                 max_vnics = bp->vf.max_vnics;
  94         }
  95
  96         /* Fast path specifics */
  97         dev_info->min_rx_bufsize = 1;
  98         dev_info->max_rx_pktlen = BNXT_MAX_MTU + ETHER_HDR_LEN + ETHER_CRC_LEN
  99                                   + VLAN_TAG_SIZE;
 100         dev_info->rx_offload_capa = 0;
 101         dev_info->tx_offload_capa = DEV_TX_OFFLOAD_IPV4_CKSUM |
 102                                         DEV_TX_OFFLOAD_TCP_CKSUM |
 103                                         DEV_TX_OFFLOAD_UDP_CKSUM |
 104                                         DEV_TX_OFFLOAD_TCP_TSO;
 105
 106         /* *INDENT-OFF* */
 107         dev_info->default_rxconf = (struct rte_eth_rxconf) {
 108                 .rx_thresh = {
 109                         .pthresh = 8,
 110                         .hthresh = 8,
 111                         .wthresh = 0,
 112                 },
 113                 .rx_free_thresh = 32,
 114                 .rx_drop_en = 0,
 115         };
 116
 117         dev_info->default_txconf = (struct rte_eth_txconf) {
 118                 .tx_thresh = {
 119                         .pthresh = 32,
 120                         .hthresh = 0,
 121                         .wthresh = 0,
 122                 },
 123                 .tx_free_thresh = 32,
 124                 .tx_rs_thresh = 32,
 125                 .txq_flags = ETH_TXQ_FLAGS_NOMULTSEGS |
 126                              ETH_TXQ_FLAGS_NOOFFLOADS,
 127         };
 128         /* *INDENT-ON* */
 129
 130         /*
 131          * TODO: default_rxconf, default_txconf, rx_desc_lim, and tx_desc_lim
 132          *       need further investigation.
 133          */
 134
 135         /* VMDq resources */
 136         vpool = 64; /* ETH_64_POOLS */
 137         vrxq = 128; /* ETH_VMDQ_DCB_NUM_QUEUES */
 138         for (i = 0; i < 4; vpool >>= 1, i++) {
 139                 if (max_vnics > vpool) {
 140                         for (j = 0; j < 5; vrxq >>= 1, j++) {
 141                                 if (dev_info->max_rx_queues > vrxq) {
 142                                         if (vpool > vrxq)
 143                                                 vpool = vrxq;
 144                                         goto found;
 145                                 }
 146                         }
 147                         /* Not enough resources to support VMDq */
 148                         break;
 149                 }
 150         }
 151         /* Not enough resources to support VMDq */
 152         vpool = 0;
 153         vrxq = 0;
 154 found:
 155         dev_info->max_vmdq_pools = vpool;
 156         dev_info->vmdq_queue_num = vrxq;
 157
 158         dev_info->vmdq_pool_base = 0;
 159         dev_info->vmdq_queue_base = 0;
 160 }
 161
 162 /* Configure the device based on the configuration provided */
 163 static int bnxt_dev_configure_op(struct rte_eth_dev *eth_dev)
 164 {
 165         struct bnxt *bp = (struct bnxt *)eth_dev->data->dev_private;
 166         int rc;
 167
 168         bp->rx_queues = (void *)eth_dev->data->rx_queues;
 169         bp->tx_queues = (void *)eth_dev->data->tx_queues;
 170
 171         /* Inherit new configurations */
 172         bp->rx_nr_rings = eth_dev->data->nb_rx_queues;
 173         bp->tx_nr_rings = eth_dev->data->nb_tx_queues;
 174         bp->rx_cp_nr_rings = bp->rx_nr_rings;
 175         bp->tx_cp_nr_rings = bp->tx_nr_rings;
 176
 177         if (eth_dev->data->dev_conf.rxmode.jumbo_frame)
 178                 eth_dev->data->mtu =
 179                                 eth_dev->data->dev_conf.rxmode.max_rx_pkt_len -
 180                                 ETHER_HDR_LEN - ETHER_CRC_LEN - VLAN_TAG_SIZE;
 181         rc = bnxt_set_hwrm_link_config(bp, true);
 182         return rc;
 183 }
 184
 185 /*
 186  * Initialization
 187  */
 188
 189 static struct eth_dev_ops bnxt_dev_ops = {
 190         .dev_infos_get = bnxt_dev_info_get_op,
 191         .dev_close = bnxt_dev_close_op,
 192         .dev_configure = bnxt_dev_configure_op,
 193         .stats_get = bnxt_stats_get_op,
 194         .stats_reset = bnxt_stats_reset_op,
 195         .rx_queue_setup = bnxt_rx_queue_setup_op,
 196         .rx_queue_release = bnxt_rx_queue_release_op,
 197         .tx_queue_setup = bnxt_tx_queue_setup_op,
 198         .tx_queue_release = bnxt_tx_queue_release_op,
 199 };
 200
 201 static bool bnxt_vf_pciid(uint16_t id)
 202 {
 203         if (id == BROADCOM_DEV_ID_57304_VF ||
 204             id == BROADCOM_DEV_ID_57406_VF)
 205                 return true;
 206         return false;
 207 }
 208
 209 static int bnxt_init_board(struct rte_eth_dev *eth_dev)
 210 {
 211         int rc;
 212         struct bnxt *bp = eth_dev->data->dev_private;
 213
 214         /* enable device (incl. PCI PM wakeup), and bus-mastering */
 215         if (!eth_dev->pci_dev->mem_resource[0].addr) {
 216                 RTE_LOG(ERR, PMD,
 217                         "Cannot find PCI device base address, aborting\n");
 218                 rc = -ENODEV;
 219                 goto init_err_disable;
 220         }
 221
 222         bp->eth_dev = eth_dev;
 223         bp->pdev = eth_dev->pci_dev;
 224
 225         bp->bar0 = (void *)eth_dev->pci_dev->mem_resource[0].addr;
 226         if (!bp->bar0) {
 227                 RTE_LOG(ERR, PMD, "Cannot map device registers, aborting\n");
 228                 rc = -ENOMEM;
 229                 goto init_err_release;
 230         }
 231         return 0;
 232
 233 init_err_release:
 234         if (bp->bar0)
 235                 bp->bar0 = NULL;
 236
 237 init_err_disable:
 238
 239         return rc;
 240 }
 241
 242 static int
 243 bnxt_dev_init(struct rte_eth_dev *eth_dev)
 244 {
 245         static int version_printed;
 246         struct bnxt *bp;
 247         int rc;
 248
 249         if (version_printed++ == 0)
 250                 RTE_LOG(INFO, PMD, "%s", bnxt_version);
 251
 252         if (eth_dev->pci_dev->addr.function >= 2 &&
 253                         eth_dev->pci_dev->addr.function < 4) {
 254                 RTE_LOG(ERR, PMD, "Function not enabled %x:\n",
 255                         eth_dev->pci_dev->addr.function);
 256                 rc = -ENOMEM;
 257                 goto error;
 258         }
 259
 260         rte_eth_copy_pci_info(eth_dev, eth_dev->pci_dev);
 261         bp = eth_dev->data->dev_private;
 262
 263         if (bnxt_vf_pciid(eth_dev->pci_dev->id.device_id))
 264                 bp->flags |= BNXT_FLAG_VF;
 265
 266         rc = bnxt_init_board(eth_dev);
 267         if (rc) {
 268                 RTE_LOG(ERR, PMD,
 269                         "Board initialization failed rc: %x\n", rc);
 270                 goto error;
 271         }
 272         eth_dev->dev_ops = &bnxt_dev_ops;
 273         eth_dev->rx_pkt_burst = &bnxt_recv_pkts;
 274         eth_dev->tx_pkt_burst = &bnxt_xmit_pkts;
 275
 276         rc = bnxt_alloc_hwrm_resources(bp);
 277         if (rc) {
 278                 RTE_LOG(ERR, PMD,
 279                         "hwrm resource allocation failure rc: %x\n", rc);
 280                 goto error_free;
 281         }
 282         rc = bnxt_hwrm_ver_get(bp);
 283         if (rc)
 284                 goto error_free;
 285         bnxt_hwrm_queue_qportcfg(bp);
 286
 287         /* Get the MAX capabilities for this function */
 288         rc = bnxt_hwrm_func_qcaps(bp);
 289         if (rc) {
 290                 RTE_LOG(ERR, PMD, "hwrm query capability failure rc: %x\n", rc);
 291                 goto error_free;
 292         }
 293         eth_dev->data->mac_addrs = rte_zmalloc("bnxt_mac_addr_tbl",
 294                                         ETHER_ADDR_LEN * MAX_NUM_MAC_ADDR, 0);
 295         if (eth_dev->data->mac_addrs == NULL) {
 296                 RTE_LOG(ERR, PMD,
 297                         "Failed to alloc %u bytes needed to store MAC addr tbl",
 298                         ETHER_ADDR_LEN * MAX_NUM_MAC_ADDR);
 299                 rc = -ENOMEM;
 300                 goto error_free;
 301         }
 302         /* Copy the permanent MAC from the qcap response address now. */
 303         if (BNXT_PF(bp))
 304                 memcpy(bp->mac_addr, bp->pf.mac_addr, sizeof(bp->mac_addr));
 305         else
 306                 memcpy(bp->mac_addr, bp->vf.mac_addr, sizeof(bp->mac_addr));
 307         memcpy(&eth_dev->data->mac_addrs[0], bp->mac_addr, ETHER_ADDR_LEN);
 308
 309         rc = bnxt_hwrm_func_driver_register(bp, 0,
 310                                             bp->pf.vf_req_fwd);
 311         if (rc) {
 312                 RTE_LOG(ERR, PMD,
 313                         "Failed to register driver");
 314                 rc = -EBUSY;
 315                 goto error_free;
 316         }
 317
 318         RTE_LOG(INFO, PMD,
 319                 DRV_MODULE_NAME " found at mem %" PRIx64 ", node addr %pM\n",
 320                 eth_dev->pci_dev->mem_resource[0].phys_addr,
 321                 eth_dev->pci_dev->mem_resource[0].addr);
 322
 323         return 0;
 324
 325 error_free:
 326         eth_dev->driver->eth_dev_uninit(eth_dev);
 327 error:
 328         return rc;
 329 }
 330
 331 static int
 332 bnxt_dev_uninit(struct rte_eth_dev *eth_dev) {
 333         struct bnxt *bp = eth_dev->data->dev_private;
 334         int rc;
 335
 336         if (eth_dev->data->mac_addrs)
 337                 rte_free(eth_dev->data->mac_addrs);
 338         rc = bnxt_hwrm_func_driver_unregister(bp, 0);
 339         bnxt_free_hwrm_resources(bp);
 340         return rc;
 341 }
 342
 343 static struct eth_driver bnxt_rte_pmd = {
 344         .pci_drv = {
 345                     .name = "rte_" DRV_MODULE_NAME "_pmd",
 346                     .id_table = bnxt_pci_id_map,
 347                     .drv_flags = RTE_PCI_DRV_NEED_MAPPING,
 348                     },
 349         .eth_dev_init = bnxt_dev_init,
 350         .eth_dev_uninit = bnxt_dev_uninit,
 351         .dev_private_size = sizeof(struct bnxt),
 352 };
 353
 354 static int bnxt_rte_pmd_init(const char *name, const char *params __rte_unused)
 355 {
 356         RTE_LOG(INFO, PMD, "bnxt_rte_pmd_init() called for %s\n", name);
 357         rte_eth_driver_register(&bnxt_rte_pmd);
 358         return 0;
 359 }
 360
 361 static struct rte_driver bnxt_pmd_drv = {
 362         .name = "eth_bnxt",
 363         .type = PMD_PDEV,
 364         .init = bnxt_rte_pmd_init,
 365 };
 366
 367 PMD_REGISTER_DRIVER(bnxt_pmd_drv);