drivers/net/sfc/sfc_port.c

   1 /*-
   2  * Copyright (c) 2016 Solarflare Communications Inc.
   3  * All rights reserved.
   4  *
   5  * This software was jointly developed between OKTET Labs (under contract
   6  * for Solarflare) and Solarflare Communications, Inc.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright notice,
  12  *    this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright notice,
  14  *    this list of conditions and the following disclaimer in the documentation
  15  *    and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  18  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  19  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  24  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  25  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  26  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  27  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include "efx.h"
  31
  32 #include "sfc.h"
  33 #include "sfc_log.h"
  34
  35 /**
  36  * Update MAC statistics in the buffer.
  37  *
  38  * @param       sa      Adapter
  39  *
  40  * @return Status code
  41  * @retval      0       Success
  42  * @retval      EAGAIN  Try again
  43  * @retval      ENOMEM  Memory allocation failure
  44  */
  45 int
  46 sfc_port_update_mac_stats(struct sfc_adapter *sa)
  47 {
  48         struct sfc_port *port = &sa->port;
  49         int rc;
  50
  51         SFC_ASSERT(rte_spinlock_is_locked(&port->mac_stats_lock));
  52
  53         if (sa->state != SFC_ADAPTER_STARTED)
  54                 return EINVAL;
  55
  56         rc = efx_mac_stats_update(sa->nic, &port->mac_stats_dma_mem,
  57                                   port->mac_stats_buf, NULL);
  58         if (rc != 0)
  59                 return rc;
  60
  61         return 0;
  62 }
  63
  64 int
  65 sfc_port_start(struct sfc_adapter *sa)
  66 {
  67         struct sfc_port *port = &sa->port;
  68         int rc;
  69
  70         sfc_log_init(sa, "entry");
  71
  72         sfc_log_init(sa, "init filters");
  73         rc = efx_filter_init(sa->nic);
  74         if (rc != 0)
  75                 goto fail_filter_init;
  76
  77         sfc_log_init(sa, "init port");
  78         rc = efx_port_init(sa->nic);
  79         if (rc != 0)
  80                 goto fail_port_init;
  81
  82         sfc_log_init(sa, "set MAC PDU %u", (unsigned int)port->pdu);
  83         rc = efx_mac_pdu_set(sa->nic, port->pdu);
  84         if (rc != 0)
  85                 goto fail_mac_pdu_set;
  86
  87         sfc_log_init(sa, "set MAC address");
  88         rc = efx_mac_addr_set(sa->nic,
  89                               sa->eth_dev->data->mac_addrs[0].addr_bytes);
  90         if (rc != 0)
  91                 goto fail_mac_addr_set;
  92
  93         sfc_log_init(sa, "set MAC filters");
  94         rc = efx_mac_filter_set(sa->nic, B_TRUE, B_TRUE, B_TRUE, B_TRUE);
  95         if (rc != 0)
  96                 goto fail_mac_filter_set;
  97
  98         efx_mac_stats_get_mask(sa->nic, port->mac_stats_mask,
  99                                sizeof(port->mac_stats_mask));
 100
 101         /* Update MAC stats using periodic DMA.
 102          * Common code always uses 1000ms update period, so period_ms
 103          * parameter only needs to be non-zero to start updates.
 104          */
 105         sfc_log_init(sa, "request MAC stats DMA'ing");
 106         rc = efx_mac_stats_periodic(sa->nic, &port->mac_stats_dma_mem,
 107                                     1000, B_FALSE);
 108         if (rc != 0)
 109                 goto fail_mac_stats_periodic;
 110
 111         sfc_log_init(sa, "disable MAC drain");
 112         rc = efx_mac_drain(sa->nic, B_FALSE);
 113         if (rc != 0)
 114                 goto fail_mac_drain;
 115
 116         sfc_log_init(sa, "done");
 117         return 0;
 118
 119 fail_mac_drain:
 120         (void)efx_mac_stats_periodic(sa->nic, &port->mac_stats_dma_mem,
 121                                      0, B_FALSE);
 122
 123 fail_mac_stats_periodic:
 124 fail_mac_filter_set:
 125 fail_mac_addr_set:
 126 fail_mac_pdu_set:
 127         efx_port_fini(sa->nic);
 128
 129 fail_port_init:
 130         efx_filter_fini(sa->nic);
 131
 132 fail_filter_init:
 133         sfc_log_init(sa, "failed %d", rc);
 134         return rc;
 135 }
 136
 137 void
 138 sfc_port_stop(struct sfc_adapter *sa)
 139 {
 140         sfc_log_init(sa, "entry");
 141
 142         efx_mac_drain(sa->nic, B_TRUE);
 143
 144         (void)efx_mac_stats_periodic(sa->nic, &sa->port.mac_stats_dma_mem,
 145                                      0, B_FALSE);
 146
 147         efx_port_fini(sa->nic);
 148         efx_filter_fini(sa->nic);
 149
 150         sfc_log_init(sa, "done");
 151 }
 152
 153 int
 154 sfc_port_init(struct sfc_adapter *sa)
 155 {
 156         const struct rte_eth_dev_data *dev_data = sa->eth_dev->data;
 157         struct sfc_port *port = &sa->port;
 158         int rc;
 159
 160         sfc_log_init(sa, "entry");
 161
 162         /* Enable flow control by default */
 163         port->flow_ctrl = EFX_FCNTL_RESPOND | EFX_FCNTL_GENERATE;
 164         port->flow_ctrl_autoneg = B_TRUE;
 165
 166         if (dev_data->dev_conf.rxmode.jumbo_frame)
 167                 port->pdu = dev_data->dev_conf.rxmode.max_rx_pkt_len;
 168         else
 169                 port->pdu = EFX_MAC_PDU(dev_data->mtu);
 170
 171         rte_spinlock_init(&port->mac_stats_lock);
 172
 173         rc = ENOMEM;
 174         port->mac_stats_buf = rte_calloc_socket("mac_stats_buf", EFX_MAC_NSTATS,
 175                                                 sizeof(uint64_t), 0,
 176                                                 sa->socket_id);
 177         if (port->mac_stats_buf == NULL)
 178                 goto fail_mac_stats_buf_alloc;
 179
 180         rc = sfc_dma_alloc(sa, "mac_stats", 0, EFX_MAC_STATS_SIZE,
 181                            sa->socket_id, &port->mac_stats_dma_mem);
 182         if (rc != 0)
 183                 goto fail_mac_stats_dma_alloc;
 184
 185         sfc_log_init(sa, "done");
 186         return 0;
 187
 188 fail_mac_stats_dma_alloc:
 189         rte_free(port->mac_stats_buf);
 190 fail_mac_stats_buf_alloc:
 191         sfc_log_init(sa, "failed %d", rc);
 192         return rc;
 193 }
 194
 195 void
 196 sfc_port_fini(struct sfc_adapter *sa)
 197 {
 198         struct sfc_port *port = &sa->port;
 199
 200         sfc_log_init(sa, "entry");
 201
 202         sfc_dma_free(sa, &port->mac_stats_dma_mem);
 203         rte_free(port->mac_stats_buf);
 204
 205         sfc_log_init(sa, "done");
 206 }
 207
 208 void
 209 sfc_port_link_mode_to_info(efx_link_mode_t link_mode,
 210                            struct rte_eth_link *link_info)
 211 {
 212         SFC_ASSERT(link_mode < EFX_LINK_NMODES);
 213
 214         memset(link_info, 0, sizeof(*link_info));
 215         if ((link_mode == EFX_LINK_DOWN) || (link_mode == EFX_LINK_UNKNOWN))
 216                 link_info->link_status = ETH_LINK_DOWN;
 217         else
 218                 link_info->link_status = ETH_LINK_UP;
 219
 220         switch (link_mode) {
 221         case EFX_LINK_10HDX:
 222                 link_info->link_speed  = ETH_SPEED_NUM_10M;
 223                 link_info->link_duplex = ETH_LINK_HALF_DUPLEX;
 224                 break;
 225         case EFX_LINK_10FDX:
 226                 link_info->link_speed  = ETH_SPEED_NUM_10M;
 227                 link_info->link_duplex = ETH_LINK_FULL_DUPLEX;
 228                 break;
 229         case EFX_LINK_100HDX:
 230                 link_info->link_speed  = ETH_SPEED_NUM_100M;
 231                 link_info->link_duplex = ETH_LINK_HALF_DUPLEX;
 232                 break;
 233         case EFX_LINK_100FDX:
 234                 link_info->link_speed  = ETH_SPEED_NUM_100M;
 235                 link_info->link_duplex = ETH_LINK_FULL_DUPLEX;
 236                 break;
 237         case EFX_LINK_1000HDX:
 238                 link_info->link_speed  = ETH_SPEED_NUM_1G;
 239                 link_info->link_duplex = ETH_LINK_HALF_DUPLEX;
 240                 break;
 241         case EFX_LINK_1000FDX:
 242                 link_info->link_speed  = ETH_SPEED_NUM_1G;
 243                 link_info->link_duplex = ETH_LINK_FULL_DUPLEX;
 244                 break;
 245         case EFX_LINK_10000FDX:
 246                 link_info->link_speed  = ETH_SPEED_NUM_10G;
 247                 link_info->link_duplex = ETH_LINK_FULL_DUPLEX;
 248                 break;
 249         case EFX_LINK_40000FDX:
 250                 link_info->link_speed  = ETH_SPEED_NUM_40G;
 251                 link_info->link_duplex = ETH_LINK_FULL_DUPLEX;
 252                 break;
 253         default:
 254                 SFC_ASSERT(B_FALSE);
 255                 /* FALLTHROUGH */
 256         case EFX_LINK_UNKNOWN:
 257         case EFX_LINK_DOWN:
 258                 link_info->link_speed  = ETH_SPEED_NUM_NONE;
 259                 link_info->link_duplex = 0;
 260                 break;
 261         }
 262
 263         link_info->link_autoneg = ETH_LINK_AUTONEG;
 264 }