drivers/staging/fsl-dpaa2/ethernet/dpaa2-ethtool.c

   1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
   2 /* Copyright 2014-2016 Freescale Semiconductor Inc.
   3  * Copyright 2016 NXP
   4  */
   5
   6 #include <linux/net_tstamp.h>
   7
   8 #include "dpni.h"       /* DPNI_LINK_OPT_* */
   9 #include "dpaa2-eth.h"
  10
  11 /* To be kept in sync with DPNI statistics */
  12 static char dpaa2_ethtool_stats[][ETH_GSTRING_LEN] = {
  13         "[hw] rx frames",
  14         "[hw] rx bytes",
  15         "[hw] rx mcast frames",
  16         "[hw] rx mcast bytes",
  17         "[hw] rx bcast frames",
  18         "[hw] rx bcast bytes",
  19         "[hw] tx frames",
  20         "[hw] tx bytes",
  21         "[hw] tx mcast frames",
  22         "[hw] tx mcast bytes",
  23         "[hw] tx bcast frames",
  24         "[hw] tx bcast bytes",
  25         "[hw] rx filtered frames",
  26         "[hw] rx discarded frames",
  27         "[hw] rx nobuffer discards",
  28         "[hw] tx discarded frames",
  29         "[hw] tx confirmed frames",
  30 };
  31
  32 #define DPAA2_ETH_NUM_STATS     ARRAY_SIZE(dpaa2_ethtool_stats)
  33
  34 static char dpaa2_ethtool_extras[][ETH_GSTRING_LEN] = {
  35         /* per-cpu stats */
  36         "[drv] tx conf frames",
  37         "[drv] tx conf bytes",
  38         "[drv] tx sg frames",
  39         "[drv] tx sg bytes",
  40         "[drv] tx realloc frames",
  41         "[drv] rx sg frames",
  42         "[drv] rx sg bytes",
  43         "[drv] enqueue portal busy",
  44         /* Channel stats */
  45         "[drv] dequeue portal busy",
  46         "[drv] channel pull errors",
  47         "[drv] cdan",
  48 };
  49
  50 #define DPAA2_ETH_NUM_EXTRA_STATS       ARRAY_SIZE(dpaa2_ethtool_extras)
  51
  52 static void dpaa2_eth_get_drvinfo(struct net_device *net_dev,
  53                                   struct ethtool_drvinfo *drvinfo)
  54 {
  55         struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
  56
  57         strlcpy(drvinfo->driver, KBUILD_MODNAME, sizeof(drvinfo->driver));
  58
  59         snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
  60                  "%u.%u", priv->dpni_ver_major, priv->dpni_ver_minor);
  61
  62         strlcpy(drvinfo->bus_info, dev_name(net_dev->dev.parent->parent),
  63                 sizeof(drvinfo->bus_info));
  64 }
  65
  66 static int
  67 dpaa2_eth_get_link_ksettings(struct net_device *net_dev,
  68                              struct ethtool_link_ksettings *link_settings)
  69 {
  70         struct dpni_link_state state = {0};
  71         int err = 0;
  72         struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
  73
  74         err = dpni_get_link_state(priv->mc_io, 0, priv->mc_token, &state);
  75         if (err) {
  76                 netdev_err(net_dev, "ERROR %d getting link state\n", err);
  77                 goto out;
  78         }
  79
  80         /* At the moment, we have no way of interrogating the DPMAC
  81          * from the DPNI side - and for that matter there may exist
  82          * no DPMAC at all. So for now we just don't report anything
  83          * beyond the DPNI attributes.
  84          */
  85         if (state.options & DPNI_LINK_OPT_AUTONEG)
  86                 link_settings->base.autoneg = AUTONEG_ENABLE;
  87         if (!(state.options & DPNI_LINK_OPT_HALF_DUPLEX))
  88                 link_settings->base.duplex = DUPLEX_FULL;
  89         link_settings->base.speed = state.rate;
  90
  91 out:
  92         return err;
  93 }
  94
  95 #define DPNI_DYNAMIC_LINK_SET_VER_MAJOR         7
  96 #define DPNI_DYNAMIC_LINK_SET_VER_MINOR         1
  97 static int
  98 dpaa2_eth_set_link_ksettings(struct net_device *net_dev,
  99                              const struct ethtool_link_ksettings *link_settings)
 100 {
 101         struct dpni_link_cfg cfg = {0};
 102         struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
 103         int err = 0;
 104
 105         /* If using an older MC version, the DPNI must be down
 106          * in order to be able to change link settings. Taking steps to let
 107          * the user know that.
 108          */
 109         if (dpaa2_eth_cmp_dpni_ver(priv, DPNI_DYNAMIC_LINK_SET_VER_MAJOR,
 110                                    DPNI_DYNAMIC_LINK_SET_VER_MINOR) < 0) {
 111                 if (netif_running(net_dev)) {
 112                         netdev_info(net_dev, "Interface must be brought down first.\n");
 113                         return -EACCES;
 114                 }
 115         }
 116
 117         cfg.rate = link_settings->base.speed;
 118         if (link_settings->base.autoneg == AUTONEG_ENABLE)
 119                 cfg.options |= DPNI_LINK_OPT_AUTONEG;
 120         else
 121                 cfg.options &= ~DPNI_LINK_OPT_AUTONEG;
 122         if (link_settings->base.duplex  == DUPLEX_HALF)
 123                 cfg.options |= DPNI_LINK_OPT_HALF_DUPLEX;
 124         else
 125                 cfg.options &= ~DPNI_LINK_OPT_HALF_DUPLEX;
 126
 127         err = dpni_set_link_cfg(priv->mc_io, 0, priv->mc_token, &cfg);
 128         if (err)
 129                 /* ethtool will be loud enough if we return an error; no point
 130                  * in putting our own error message on the console by default
 131                  */
 132                 netdev_dbg(net_dev, "ERROR %d setting link cfg\n", err);
 133
 134         return err;
 135 }
 136
 137 static void dpaa2_eth_get_strings(struct net_device *netdev, u32 stringset,
 138                                   u8 *data)
 139 {
 140         u8 *p = data;
 141         int i;
 142
 143         switch (stringset) {
 144         case ETH_SS_STATS:
 145                 for (i = 0; i < DPAA2_ETH_NUM_STATS; i++) {
 146                         strlcpy(p, dpaa2_ethtool_stats[i], ETH_GSTRING_LEN);
 147                         p += ETH_GSTRING_LEN;
 148                 }
 149                 for (i = 0; i < DPAA2_ETH_NUM_EXTRA_STATS; i++) {
 150                         strlcpy(p, dpaa2_ethtool_extras[i], ETH_GSTRING_LEN);
 151                         p += ETH_GSTRING_LEN;
 152                 }
 153                 break;
 154         }
 155 }
 156
 157 static int dpaa2_eth_get_sset_count(struct net_device *net_dev, int sset)
 158 {
 159         switch (sset) {
 160         case ETH_SS_STATS: /* ethtool_get_stats(), ethtool_get_drvinfo() */
 161                 return DPAA2_ETH_NUM_STATS + DPAA2_ETH_NUM_EXTRA_STATS;
 162         default:
 163                 return -EOPNOTSUPP;
 164         }
 165 }
 166
 167 /** Fill in hardware counters, as returned by MC.
 168  */
 169 static void dpaa2_eth_get_ethtool_stats(struct net_device *net_dev,
 170                                         struct ethtool_stats *stats,
 171                                         u64 *data)
 172 {
 173         int i = 0;
 174         int j, k, err;
 175         int num_cnt;
 176         union dpni_statistics dpni_stats;
 177         u64 cdan = 0;
 178         u64 portal_busy = 0, pull_err = 0;
 179         struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
 180         struct dpaa2_eth_drv_stats *extras;
 181         struct dpaa2_eth_ch_stats *ch_stats;
 182
 183         memset(data, 0,
 184                sizeof(u64) * (DPAA2_ETH_NUM_STATS + DPAA2_ETH_NUM_EXTRA_STATS));
 185
 186         /* Print standard counters, from DPNI statistics */
 187         for (j = 0; j <= 2; j++) {
 188                 err = dpni_get_statistics(priv->mc_io, 0, priv->mc_token,
 189                                           j, &dpni_stats);
 190                 if (err != 0)
 191                         netdev_warn(net_dev, "dpni_get_stats(%d) failed\n", j);
 192                 switch (j) {
 193                 case 0:
 194                         num_cnt = sizeof(dpni_stats.page_0) / sizeof(u64);
 195                         break;
 196                 case 1:
 197                         num_cnt = sizeof(dpni_stats.page_1) / sizeof(u64);
 198                         break;
 199                 case 2:
 200                         num_cnt = sizeof(dpni_stats.page_2) / sizeof(u64);
 201                         break;
 202                 }
 203                 for (k = 0; k < num_cnt; k++)
 204                         *(data + i++) = dpni_stats.raw.counter[k];
 205         }
 206
 207         /* Print per-cpu extra stats */
 208         for_each_online_cpu(k) {
 209                 extras = per_cpu_ptr(priv->percpu_extras, k);
 210                 for (j = 0; j < sizeof(*extras) / sizeof(__u64); j++)
 211                         *((__u64 *)data + i + j) += *((__u64 *)extras + j);
 212         }
 213         i += j;
 214
 215         for (j = 0; j < priv->num_channels; j++) {
 216                 ch_stats = &priv->channel[j]->stats;
 217                 cdan += ch_stats->cdan;
 218                 portal_busy += ch_stats->dequeue_portal_busy;
 219                 pull_err += ch_stats->pull_err;
 220         }
 221
 222         *(data + i++) = portal_busy;
 223         *(data + i++) = pull_err;
 224         *(data + i++) = cdan;
 225 }
 226
 227 static int dpaa2_eth_get_rxnfc(struct net_device *net_dev,
 228                                struct ethtool_rxnfc *rxnfc, u32 *rule_locs)
 229 {
 230         struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
 231
 232         switch (rxnfc->cmd) {
 233         case ETHTOOL_GRXFH:
 234                 /* we purposely ignore cmd->flow_type for now, because the
 235                  * classifier only supports a single set of fields for all
 236                  * protocols
 237                  */
 238                 rxnfc->data = priv->rx_hash_fields;
 239                 break;
 240         case ETHTOOL_GRXRINGS:
 241                 rxnfc->data = dpaa2_eth_queue_count(priv);
 242                 break;
 243         default:
 244                 return -EOPNOTSUPP;
 245         }
 246
 247         return 0;
 248 }
 249
 250 int dpaa2_phc_index = -1;
 251 EXPORT_SYMBOL(dpaa2_phc_index);
 252
 253 static int dpaa2_eth_get_ts_info(struct net_device *dev,
 254                                  struct ethtool_ts_info *info)
 255 {
 256         info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
 257                                 SOF_TIMESTAMPING_RX_HARDWARE |
 258                                 SOF_TIMESTAMPING_RAW_HARDWARE;
 259
 260         info->phc_index = dpaa2_phc_index;
 261
 262         info->tx_types = (1 << HWTSTAMP_TX_OFF) |
 263                          (1 << HWTSTAMP_TX_ON);
 264
 265         info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
 266                            (1 << HWTSTAMP_FILTER_ALL);
 267         return 0;
 268 }
 269
 270 const struct ethtool_ops dpaa2_ethtool_ops = {
 271         .get_drvinfo = dpaa2_eth_get_drvinfo,
 272         .get_link = ethtool_op_get_link,
 273         .get_link_ksettings = dpaa2_eth_get_link_ksettings,
 274         .set_link_ksettings = dpaa2_eth_set_link_ksettings,
 275         .get_sset_count = dpaa2_eth_get_sset_count,
 276         .get_ethtool_stats = dpaa2_eth_get_ethtool_stats,
 277         .get_strings = dpaa2_eth_get_strings,
 278         .get_rxnfc = dpaa2_eth_get_rxnfc,
 279         .get_ts_info = dpaa2_eth_get_ts_info,
 280 };