drivers/net/fjes/fjes_ethtool.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  FUJITSU Extended Socket Network Device driver
   4  *  Copyright (c) 2015 FUJITSU LIMITED
   5  */
   6
   7 /* ethtool support for fjes */
   8
   9 #include <linux/vmalloc.h>
  10 #include <linux/netdevice.h>
  11 #include <linux/ethtool.h>
  12 #include <linux/platform_device.h>
  13
  14 #include "fjes.h"
  15
  16 struct fjes_stats {
  17         char stat_string[ETH_GSTRING_LEN];
  18         int sizeof_stat;
  19         int stat_offset;
  20 };
  21
  22 #define FJES_STAT(name, stat) { \
  23         .stat_string = name, \
  24         .sizeof_stat = sizeof_field(struct fjes_adapter, stat), \
  25         .stat_offset = offsetof(struct fjes_adapter, stat) \
  26 }
  27
  28 static const struct fjes_stats fjes_gstrings_stats[] = {
  29         FJES_STAT("rx_packets", stats64.rx_packets),
  30         FJES_STAT("tx_packets", stats64.tx_packets),
  31         FJES_STAT("rx_bytes", stats64.rx_bytes),
  32         FJES_STAT("tx_bytes", stats64.rx_bytes),
  33         FJES_STAT("rx_dropped", stats64.rx_dropped),
  34         FJES_STAT("tx_dropped", stats64.tx_dropped),
  35 };
  36
  37 #define FJES_EP_STATS_LEN 14
  38 #define FJES_STATS_LEN \
  39         (ARRAY_SIZE(fjes_gstrings_stats) + \
  40          ((&((struct fjes_adapter *)netdev_priv(netdev))->hw)->max_epid - 1) * \
  41          FJES_EP_STATS_LEN)
  42
  43 static void fjes_get_ethtool_stats(struct net_device *netdev,
  44                                    struct ethtool_stats *stats, u64 *data)
  45 {
  46         struct fjes_adapter *adapter = netdev_priv(netdev);
  47         struct fjes_hw *hw = &adapter->hw;
  48         int epidx;
  49         char *p;
  50         int i;
  51
  52         for (i = 0; i < ARRAY_SIZE(fjes_gstrings_stats); i++) {
  53                 p = (char *)adapter + fjes_gstrings_stats[i].stat_offset;
  54                 data[i] = (fjes_gstrings_stats[i].sizeof_stat == sizeof(u64))
  55                         ? *(u64 *)p : *(u32 *)p;
  56         }
  57         for (epidx = 0; epidx < hw->max_epid; epidx++) {
  58                 if (epidx == hw->my_epid)
  59                         continue;
  60                 data[i++] = hw->ep_shm_info[epidx].ep_stats
  61                                 .com_regist_buf_exec;
  62                 data[i++] = hw->ep_shm_info[epidx].ep_stats
  63                                 .com_unregist_buf_exec;
  64                 data[i++] = hw->ep_shm_info[epidx].ep_stats.send_intr_rx;
  65                 data[i++] = hw->ep_shm_info[epidx].ep_stats.send_intr_unshare;
  66                 data[i++] = hw->ep_shm_info[epidx].ep_stats
  67                                 .send_intr_zoneupdate;
  68                 data[i++] = hw->ep_shm_info[epidx].ep_stats.recv_intr_rx;
  69                 data[i++] = hw->ep_shm_info[epidx].ep_stats.recv_intr_unshare;
  70                 data[i++] = hw->ep_shm_info[epidx].ep_stats.recv_intr_stop;
  71                 data[i++] = hw->ep_shm_info[epidx].ep_stats
  72                                 .recv_intr_zoneupdate;
  73                 data[i++] = hw->ep_shm_info[epidx].ep_stats.tx_buffer_full;
  74                 data[i++] = hw->ep_shm_info[epidx].ep_stats
  75                                 .tx_dropped_not_shared;
  76                 data[i++] = hw->ep_shm_info[epidx].ep_stats
  77                                 .tx_dropped_ver_mismatch;
  78                 data[i++] = hw->ep_shm_info[epidx].ep_stats
  79                                 .tx_dropped_buf_size_mismatch;
  80                 data[i++] = hw->ep_shm_info[epidx].ep_stats
  81                                 .tx_dropped_vlanid_mismatch;
  82         }
  83 }
  84
  85 static void fjes_get_strings(struct net_device *netdev,
  86                              u32 stringset, u8 *data)
  87 {
  88         struct fjes_adapter *adapter = netdev_priv(netdev);
  89         struct fjes_hw *hw = &adapter->hw;
  90         int i;
  91
  92         if (stringset != ETH_SS_STATS)
  93                 return;
  94
  95         for (i = 0; i < ARRAY_SIZE(fjes_gstrings_stats); i++)
  96                 ethtool_puts(&data, fjes_gstrings_stats[i].stat_string);
  97
  98         for (i = 0; i < hw->max_epid; i++) {
  99                 if (i == hw->my_epid)
 100                         continue;
 101                 ethtool_sprintf(&data, "ep%u_com_regist_buf_exec", i);
 102                 ethtool_sprintf(&data, "ep%u_com_unregist_buf_exec", i);
 103                 ethtool_sprintf(&data, "ep%u_send_intr_rx", i);
 104                 ethtool_sprintf(&data, "ep%u_send_intr_unshare", i);
 105                 ethtool_sprintf(&data, "ep%u_send_intr_zoneupdate", i);
 106                 ethtool_sprintf(&data, "ep%u_recv_intr_rx", i);
 107                 ethtool_sprintf(&data, "ep%u_recv_intr_unshare", i);
 108                 ethtool_sprintf(&data, "ep%u_recv_intr_stop", i);
 109                 ethtool_sprintf(&data, "ep%u_recv_intr_zoneupdate", i);
 110                 ethtool_sprintf(&data, "ep%u_tx_buffer_full", i);
 111                 ethtool_sprintf(&data, "ep%u_tx_dropped_not_shared", i);
 112                 ethtool_sprintf(&data, "ep%u_tx_dropped_ver_mismatch", i);
 113                 ethtool_sprintf(&data, "ep%u_tx_dropped_buf_size_mismatch", i);
 114                 ethtool_sprintf(&data, "ep%u_tx_dropped_vlanid_mismatch", i);
 115         }
 116 }
 117
 118 static int fjes_get_sset_count(struct net_device *netdev, int sset)
 119 {
 120         switch (sset) {
 121         case ETH_SS_STATS:
 122                 return FJES_STATS_LEN;
 123         default:
 124                 return -EOPNOTSUPP;
 125         }
 126 }
 127
 128 static void fjes_get_drvinfo(struct net_device *netdev,
 129                              struct ethtool_drvinfo *drvinfo)
 130 {
 131         struct fjes_adapter *adapter = netdev_priv(netdev);
 132         struct platform_device *plat_dev;
 133
 134         plat_dev = adapter->plat_dev;
 135
 136         strscpy(drvinfo->driver, fjes_driver_name, sizeof(drvinfo->driver));
 137         strscpy(drvinfo->version, fjes_driver_version,
 138                 sizeof(drvinfo->version));
 139
 140         strscpy(drvinfo->fw_version, "none", sizeof(drvinfo->fw_version));
 141         snprintf(drvinfo->bus_info, sizeof(drvinfo->bus_info),
 142                  "platform:%s", plat_dev->name);
 143 }
 144
 145 static int fjes_get_link_ksettings(struct net_device *netdev,
 146                                    struct ethtool_link_ksettings *ecmd)
 147 {
 148         ethtool_link_ksettings_zero_link_mode(ecmd, supported);
 149         ethtool_link_ksettings_zero_link_mode(ecmd, advertising);
 150         ecmd->base.duplex = DUPLEX_FULL;
 151         ecmd->base.autoneg = AUTONEG_DISABLE;
 152         ecmd->base.port = PORT_NONE;
 153         ecmd->base.speed = 20000;       /* 20Gb/s */
 154
 155         return 0;
 156 }
 157
 158 static int fjes_get_regs_len(struct net_device *netdev)
 159 {
 160 #define FJES_REGS_LEN   37
 161         return FJES_REGS_LEN * sizeof(u32);
 162 }
 163
 164 static void fjes_get_regs(struct net_device *netdev,
 165                           struct ethtool_regs *regs, void *p)
 166 {
 167         struct fjes_adapter *adapter = netdev_priv(netdev);
 168         struct fjes_hw *hw = &adapter->hw;
 169         u32 *regs_buff = p;
 170
 171         memset(p, 0, FJES_REGS_LEN * sizeof(u32));
 172
 173         regs->version = 1;
 174
 175         /* Information registers */
 176         regs_buff[0] = rd32(XSCT_OWNER_EPID);
 177         regs_buff[1] = rd32(XSCT_MAX_EP);
 178
 179         /* Device Control registers */
 180         regs_buff[4] = rd32(XSCT_DCTL);
 181
 182         /* Command Control registers */
 183         regs_buff[8] = rd32(XSCT_CR);
 184         regs_buff[9] = rd32(XSCT_CS);
 185         regs_buff[10] = rd32(XSCT_SHSTSAL);
 186         regs_buff[11] = rd32(XSCT_SHSTSAH);
 187
 188         regs_buff[13] = rd32(XSCT_REQBL);
 189         regs_buff[14] = rd32(XSCT_REQBAL);
 190         regs_buff[15] = rd32(XSCT_REQBAH);
 191
 192         regs_buff[17] = rd32(XSCT_RESPBL);
 193         regs_buff[18] = rd32(XSCT_RESPBAL);
 194         regs_buff[19] = rd32(XSCT_RESPBAH);
 195
 196         /* Interrupt Control registers */
 197         regs_buff[32] = rd32(XSCT_IS);
 198         regs_buff[33] = rd32(XSCT_IMS);
 199         regs_buff[34] = rd32(XSCT_IMC);
 200         regs_buff[35] = rd32(XSCT_IG);
 201         regs_buff[36] = rd32(XSCT_ICTL);
 202 }
 203
 204 static int fjes_set_dump(struct net_device *netdev, struct ethtool_dump *dump)
 205 {
 206         struct fjes_adapter *adapter = netdev_priv(netdev);
 207         struct fjes_hw *hw = &adapter->hw;
 208         int ret = 0;
 209
 210         if (dump->flag) {
 211                 if (hw->debug_mode)
 212                         return -EPERM;
 213
 214                 hw->debug_mode = dump->flag;
 215
 216                 /* enable debug mode */
 217                 mutex_lock(&hw->hw_info.lock);
 218                 ret = fjes_hw_start_debug(hw);
 219                 mutex_unlock(&hw->hw_info.lock);
 220
 221                 if (ret)
 222                         hw->debug_mode = 0;
 223         } else {
 224                 if (!hw->debug_mode)
 225                         return -EPERM;
 226
 227                 /* disable debug mode */
 228                 mutex_lock(&hw->hw_info.lock);
 229                 ret = fjes_hw_stop_debug(hw);
 230                 mutex_unlock(&hw->hw_info.lock);
 231         }
 232
 233         return ret;
 234 }
 235
 236 static int fjes_get_dump_flag(struct net_device *netdev,
 237                               struct ethtool_dump *dump)
 238 {
 239         struct fjes_adapter *adapter = netdev_priv(netdev);
 240         struct fjes_hw *hw = &adapter->hw;
 241
 242         dump->len = hw->hw_info.trace_size;
 243         dump->version = 1;
 244         dump->flag = hw->debug_mode;
 245
 246         return 0;
 247 }
 248
 249 static int fjes_get_dump_data(struct net_device *netdev,
 250                               struct ethtool_dump *dump, void *buf)
 251 {
 252         struct fjes_adapter *adapter = netdev_priv(netdev);
 253         struct fjes_hw *hw = &adapter->hw;
 254         int ret = 0;
 255
 256         if (hw->hw_info.trace)
 257                 memcpy(buf, hw->hw_info.trace, hw->hw_info.trace_size);
 258         else
 259                 ret = -EPERM;
 260
 261         return ret;
 262 }
 263
 264 static const struct ethtool_ops fjes_ethtool_ops = {
 265                 .get_drvinfo            = fjes_get_drvinfo,
 266                 .get_ethtool_stats = fjes_get_ethtool_stats,
 267                 .get_strings      = fjes_get_strings,
 268                 .get_sset_count   = fjes_get_sset_count,
 269                 .get_regs               = fjes_get_regs,
 270                 .get_regs_len           = fjes_get_regs_len,
 271                 .set_dump               = fjes_set_dump,
 272                 .get_dump_flag          = fjes_get_dump_flag,
 273                 .get_dump_data          = fjes_get_dump_data,
 274                 .get_link_ksettings     = fjes_get_link_ksettings,
 275 };
 276
 277 void fjes_set_ethtool_ops(struct net_device *netdev)
 278 {
 279         netdev->ethtool_ops = &fjes_ethtool_ops;
 280 }