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 flow control to %#x autoneg=%u",
  83                      port->flow_ctrl, port->flow_ctrl_autoneg);
  84         rc = efx_mac_fcntl_set(sa->nic, port->flow_ctrl,
  85                                port->flow_ctrl_autoneg);
  86         if (rc != 0)
  87                 goto fail_mac_fcntl_set;
  88
  89         sfc_log_init(sa, "set MAC PDU %u", (unsigned int)port->pdu);
  90         rc = efx_mac_pdu_set(sa->nic, port->pdu);
  91         if (rc != 0)
  92                 goto fail_mac_pdu_set;
  93
  94         sfc_log_init(sa, "set MAC address");
  95         rc = efx_mac_addr_set(sa->nic,
  96                               sa->eth_dev->data->mac_addrs[0].addr_bytes);
  97         if (rc != 0)
  98                 goto fail_mac_addr_set;
  99
 100         sfc_log_init(sa, "set MAC filters");
 101         rc = efx_mac_filter_set(sa->nic, B_TRUE, B_TRUE, B_TRUE, B_TRUE);
 102         if (rc != 0)
 103                 goto fail_mac_filter_set;
 104
 105         efx_mac_stats_get_mask(sa->nic, port->mac_stats_mask,
 106                                sizeof(port->mac_stats_mask));
 107
 108         /* Update MAC stats using periodic DMA.
 109          * Common code always uses 1000ms update period, so period_ms
 110          * parameter only needs to be non-zero to start updates.
 111          */
 112         sfc_log_init(sa, "request MAC stats DMA'ing");
 113         rc = efx_mac_stats_periodic(sa->nic, &port->mac_stats_dma_mem,
 114                                     1000, B_FALSE);
 115         if (rc != 0)
 116                 goto fail_mac_stats_periodic;
 117
 118         sfc_log_init(sa, "disable MAC drain");
 119         rc = efx_mac_drain(sa->nic, B_FALSE);
 120         if (rc != 0)
 121                 goto fail_mac_drain;
 122
 123         sfc_log_init(sa, "done");
 124         return 0;
 125
 126 fail_mac_drain:
 127         (void)efx_mac_stats_periodic(sa->nic, &port->mac_stats_dma_mem,
 128                                      0, B_FALSE);
 129
 130 fail_mac_stats_periodic:
 131 fail_mac_filter_set:
 132 fail_mac_addr_set:
 133 fail_mac_pdu_set:
 134 fail_mac_fcntl_set:
 135         efx_port_fini(sa->nic);
 136
 137 fail_port_init:
 138         efx_filter_fini(sa->nic);
 139
 140 fail_filter_init:
 141         sfc_log_init(sa, "failed %d", rc);
 142         return rc;
 143 }
 144
 145 void
 146 sfc_port_stop(struct sfc_adapter *sa)
 147 {
 148         sfc_log_init(sa, "entry");
 149
 150         efx_mac_drain(sa->nic, B_TRUE);
 151
 152         (void)efx_mac_stats_periodic(sa->nic, &sa->port.mac_stats_dma_mem,
 153                                      0, B_FALSE);
 154
 155         efx_port_fini(sa->nic);
 156         efx_filter_fini(sa->nic);
 157
 158         sfc_log_init(sa, "done");
 159 }
 160
 161 int
 162 sfc_port_init(struct sfc_adapter *sa)
 163 {
 164         const struct rte_eth_dev_data *dev_data = sa->eth_dev->data;
 165         struct sfc_port *port = &sa->port;
 166         int rc;
 167
 168         sfc_log_init(sa, "entry");
 169
 170         /* Enable flow control by default */
 171         port->flow_ctrl = EFX_FCNTL_RESPOND | EFX_FCNTL_GENERATE;
 172         port->flow_ctrl_autoneg = B_TRUE;
 173
 174         if (dev_data->dev_conf.rxmode.jumbo_frame)
 175                 port->pdu = dev_data->dev_conf.rxmode.max_rx_pkt_len;
 176         else
 177                 port->pdu = EFX_MAC_PDU(dev_data->mtu);
 178
 179         rte_spinlock_init(&port->mac_stats_lock);
 180
 181         rc = ENOMEM;
 182         port->mac_stats_buf = rte_calloc_socket("mac_stats_buf", EFX_MAC_NSTATS,
 183                                                 sizeof(uint64_t), 0,
 184                                                 sa->socket_id);
 185         if (port->mac_stats_buf == NULL)
 186                 goto fail_mac_stats_buf_alloc;
 187
 188         rc = sfc_dma_alloc(sa, "mac_stats", 0, EFX_MAC_STATS_SIZE,
 189                            sa->socket_id, &port->mac_stats_dma_mem);
 190         if (rc != 0)
 191                 goto fail_mac_stats_dma_alloc;
 192
 193         sfc_log_init(sa, "done");
 194         return 0;
 195
 196 fail_mac_stats_dma_alloc:
 197         rte_free(port->mac_stats_buf);
 198 fail_mac_stats_buf_alloc:
 199         sfc_log_init(sa, "failed %d", rc);
 200         return rc;
 201 }
 202
 203 void
 204 sfc_port_fini(struct sfc_adapter *sa)
 205 {
 206         struct sfc_port *port = &sa->port;
 207
 208         sfc_log_init(sa, "entry");
 209
 210         sfc_dma_free(sa, &port->mac_stats_dma_mem);
 211         rte_free(port->mac_stats_buf);
 212
 213         sfc_log_init(sa, "done");
 214 }
 215
 216 void
 217 sfc_port_link_mode_to_info(efx_link_mode_t link_mode,
 218                            struct rte_eth_link *link_info)
 219 {
 220         SFC_ASSERT(link_mode < EFX_LINK_NMODES);
 221
 222         memset(link_info, 0, sizeof(*link_info));
 223         if ((link_mode == EFX_LINK_DOWN) || (link_mode == EFX_LINK_UNKNOWN))
 224                 link_info->link_status = ETH_LINK_DOWN;
 225         else
 226                 link_info->link_status = ETH_LINK_UP;
 227
 228         switch (link_mode) {
 229         case EFX_LINK_10HDX:
 230                 link_info->link_speed  = ETH_SPEED_NUM_10M;
 231                 link_info->link_duplex = ETH_LINK_HALF_DUPLEX;
 232                 break;
 233         case EFX_LINK_10FDX:
 234                 link_info->link_speed  = ETH_SPEED_NUM_10M;
 235                 link_info->link_duplex = ETH_LINK_FULL_DUPLEX;
 236                 break;
 237         case EFX_LINK_100HDX:
 238                 link_info->link_speed  = ETH_SPEED_NUM_100M;
 239                 link_info->link_duplex = ETH_LINK_HALF_DUPLEX;
 240                 break;
 241         case EFX_LINK_100FDX:
 242                 link_info->link_speed  = ETH_SPEED_NUM_100M;
 243                 link_info->link_duplex = ETH_LINK_FULL_DUPLEX;
 244                 break;
 245         case EFX_LINK_1000HDX:
 246                 link_info->link_speed  = ETH_SPEED_NUM_1G;
 247                 link_info->link_duplex = ETH_LINK_HALF_DUPLEX;
 248                 break;
 249         case EFX_LINK_1000FDX:
 250                 link_info->link_speed  = ETH_SPEED_NUM_1G;
 251                 link_info->link_duplex = ETH_LINK_FULL_DUPLEX;
 252                 break;
 253         case EFX_LINK_10000FDX:
 254                 link_info->link_speed  = ETH_SPEED_NUM_10G;
 255                 link_info->link_duplex = ETH_LINK_FULL_DUPLEX;
 256                 break;
 257         case EFX_LINK_40000FDX:
 258                 link_info->link_speed  = ETH_SPEED_NUM_40G;
 259                 link_info->link_duplex = ETH_LINK_FULL_DUPLEX;
 260                 break;
 261         default:
 262                 SFC_ASSERT(B_FALSE);
 263                 /* FALLTHROUGH */
 264         case EFX_LINK_UNKNOWN:
 265         case EFX_LINK_DOWN:
 266                 link_info->link_speed  = ETH_SPEED_NUM_NONE;
 267                 link_info->link_duplex = 0;
 268                 break;
 269         }
 270
 271         link_info->link_autoneg = ETH_LINK_AUTONEG;
 272 }