drivers/s390/net/qeth_ethtool.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright IBM Corp. 2018
   4  */
   5
   6 #define KMSG_COMPONENT "qeth"
   7 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
   8
   9 #include <linux/ethtool.h>
  10 #include "qeth_core.h"
  11
  12
  13 #define QETH_TXQ_STAT(_name, _stat) { \
  14         .name = _name, \
  15         .offset = offsetof(struct qeth_out_q_stats, _stat) \
  16 }
  17
  18 #define QETH_CARD_STAT(_name, _stat) { \
  19         .name = _name, \
  20         .offset = offsetof(struct qeth_card_stats, _stat) \
  21 }
  22
  23 struct qeth_stats {
  24         char name[ETH_GSTRING_LEN];
  25         unsigned int offset;
  26 };
  27
  28 static const struct qeth_stats txq_stats[] = {
  29         QETH_TXQ_STAT("IO buffers", bufs),
  30         QETH_TXQ_STAT("IO buffer elements", buf_elements),
  31         QETH_TXQ_STAT("packed IO buffers", bufs_pack),
  32         QETH_TXQ_STAT("skbs", tx_packets),
  33         QETH_TXQ_STAT("packed skbs", skbs_pack),
  34         QETH_TXQ_STAT("SG skbs", skbs_sg),
  35         QETH_TXQ_STAT("HW csum skbs", skbs_csum),
  36         QETH_TXQ_STAT("TSO skbs", skbs_tso),
  37         QETH_TXQ_STAT("linearized skbs", skbs_linearized),
  38         QETH_TXQ_STAT("linearized+error skbs", skbs_linearized_fail),
  39         QETH_TXQ_STAT("TSO bytes", tso_bytes),
  40         QETH_TXQ_STAT("Packing mode switches", packing_mode_switch),
  41 };
  42
  43 static const struct qeth_stats card_stats[] = {
  44         QETH_CARD_STAT("rx0 IO buffers", rx_bufs),
  45         QETH_CARD_STAT("rx0 HW csum skbs", rx_skb_csum),
  46         QETH_CARD_STAT("rx0 SG skbs", rx_sg_skbs),
  47         QETH_CARD_STAT("rx0 SG page frags", rx_sg_frags),
  48         QETH_CARD_STAT("rx0 SG page allocs", rx_sg_alloc_page),
  49 };
  50
  51 #define TXQ_STATS_LEN   ARRAY_SIZE(txq_stats)
  52 #define CARD_STATS_LEN  ARRAY_SIZE(card_stats)
  53
  54 static void qeth_add_stat_data(u64 **dst, void *src,
  55                                const struct qeth_stats stats[],
  56                                unsigned int size)
  57 {
  58         unsigned int i;
  59         char *stat;
  60
  61         for (i = 0; i < size; i++) {
  62                 stat = (char *)src + stats[i].offset;
  63                 **dst = *(u64 *)stat;
  64                 (*dst)++;
  65         }
  66 }
  67
  68 static void qeth_add_stat_strings(u8 **data, const char *prefix,
  69                                   const struct qeth_stats stats[],
  70                                   unsigned int size)
  71 {
  72         unsigned int i;
  73
  74         for (i = 0; i < size; i++) {
  75                 snprintf(*data, ETH_GSTRING_LEN, "%s%s", prefix, stats[i].name);
  76                 *data += ETH_GSTRING_LEN;
  77         }
  78 }
  79
  80 static int qeth_get_sset_count(struct net_device *dev, int stringset)
  81 {
  82         struct qeth_card *card = dev->ml_priv;
  83
  84         switch (stringset) {
  85         case ETH_SS_STATS:
  86                 return CARD_STATS_LEN +
  87                        card->qdio.no_out_queues * TXQ_STATS_LEN;
  88         default:
  89                 return -EINVAL;
  90         }
  91 }
  92
  93 static void qeth_get_ethtool_stats(struct net_device *dev,
  94                                    struct ethtool_stats *stats, u64 *data)
  95 {
  96         struct qeth_card *card = dev->ml_priv;
  97         unsigned int i;
  98
  99         qeth_add_stat_data(&data, &card->stats, card_stats, CARD_STATS_LEN);
 100         for (i = 0; i < card->qdio.no_out_queues; i++)
 101                 qeth_add_stat_data(&data, &card->qdio.out_qs[i]->stats,
 102                                    txq_stats, TXQ_STATS_LEN);
 103 }
 104
 105 static void qeth_get_ringparam(struct net_device *dev,
 106                                struct ethtool_ringparam *param)
 107 {
 108         struct qeth_card *card = dev->ml_priv;
 109
 110         param->rx_max_pending = QDIO_MAX_BUFFERS_PER_Q;
 111         param->rx_mini_max_pending = 0;
 112         param->rx_jumbo_max_pending = 0;
 113         param->tx_max_pending = QDIO_MAX_BUFFERS_PER_Q;
 114
 115         param->rx_pending = card->qdio.in_buf_pool.buf_count;
 116         param->rx_mini_pending = 0;
 117         param->rx_jumbo_pending = 0;
 118         param->tx_pending = QDIO_MAX_BUFFERS_PER_Q;
 119 }
 120
 121 static void qeth_get_strings(struct net_device *dev, u32 stringset, u8 *data)
 122 {
 123         struct qeth_card *card = dev->ml_priv;
 124         char prefix[ETH_GSTRING_LEN] = "";
 125         unsigned int i;
 126
 127         switch (stringset) {
 128         case ETH_SS_STATS:
 129                 qeth_add_stat_strings(&data, prefix, card_stats,
 130                                       CARD_STATS_LEN);
 131                 for (i = 0; i < card->qdio.no_out_queues; i++) {
 132                         snprintf(prefix, ETH_GSTRING_LEN, "tx%u ", i);
 133                         qeth_add_stat_strings(&data, prefix, txq_stats,
 134                                               TXQ_STATS_LEN);
 135                 }
 136                 break;
 137         default:
 138                 WARN_ON(1);
 139                 break;
 140         }
 141 }
 142
 143 static void qeth_get_drvinfo(struct net_device *dev,
 144                              struct ethtool_drvinfo *info)
 145 {
 146         struct qeth_card *card = dev->ml_priv;
 147
 148         strlcpy(info->driver, IS_LAYER2(card) ? "qeth_l2" : "qeth_l3",
 149                 sizeof(info->driver));
 150         strlcpy(info->version, "1.0", sizeof(info->version));
 151         strlcpy(info->fw_version, card->info.mcl_level,
 152                 sizeof(info->fw_version));
 153         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
 154                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
 155 }
 156
 157 /* Helper function to fill 'advertising' and 'supported' which are the same. */
 158 /* Autoneg and full-duplex are supported and advertised unconditionally.     */
 159 /* Always advertise and support all speeds up to specified, and only one     */
 160 /* specified port type.                                                      */
 161 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
 162                                 int maxspeed, int porttype)
 163 {
 164         ethtool_link_ksettings_zero_link_mode(cmd, supported);
 165         ethtool_link_ksettings_zero_link_mode(cmd, advertising);
 166         ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
 167
 168         ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
 169         ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
 170
 171         switch (porttype) {
 172         case PORT_TP:
 173                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
 174                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
 175                 break;
 176         case PORT_FIBRE:
 177                 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
 178                 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
 179                 break;
 180         default:
 181                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
 182                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
 183                 WARN_ON_ONCE(1);
 184         }
 185
 186         /* partially does fall through, to also select lower speeds */
 187         switch (maxspeed) {
 188         case SPEED_25000:
 189                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 190                                                      25000baseSR_Full);
 191                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 192                                                      25000baseSR_Full);
 193                 break;
 194         case SPEED_10000:
 195                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 196                                                      10000baseT_Full);
 197                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 198                                                      10000baseT_Full);
 199                 /* fall through */
 200         case SPEED_1000:
 201                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 202                                                      1000baseT_Full);
 203                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 204                                                      1000baseT_Full);
 205                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 206                                                      1000baseT_Half);
 207                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 208                                                      1000baseT_Half);
 209                 /* fall through */
 210         case SPEED_100:
 211                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 212                                                      100baseT_Full);
 213                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 214                                                      100baseT_Full);
 215                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 216                                                      100baseT_Half);
 217                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 218                                                      100baseT_Half);
 219                 /* fall through */
 220         case SPEED_10:
 221                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 222                                                      10baseT_Full);
 223                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 224                                                      10baseT_Full);
 225                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 226                                                      10baseT_Half);
 227                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 228                                                      10baseT_Half);
 229                 break;
 230         default:
 231                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 232                                                      10baseT_Full);
 233                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 234                                                      10baseT_Full);
 235                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 236                                                      10baseT_Half);
 237                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 238                                                      10baseT_Half);
 239                 WARN_ON_ONCE(1);
 240         }
 241 }
 242
 243
 244 static int qeth_get_link_ksettings(struct net_device *netdev,
 245                                    struct ethtool_link_ksettings *cmd)
 246 {
 247         struct qeth_card *card = netdev->ml_priv;
 248         enum qeth_link_types link_type;
 249         struct carrier_info carrier_info;
 250         int rc;
 251
 252         if (IS_IQD(card) || IS_VM_NIC(card))
 253                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
 254         else
 255                 link_type = card->info.link_type;
 256
 257         cmd->base.duplex = DUPLEX_FULL;
 258         cmd->base.autoneg = AUTONEG_ENABLE;
 259         cmd->base.phy_address = 0;
 260         cmd->base.mdio_support = 0;
 261         cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
 262         cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
 263
 264         switch (link_type) {
 265         case QETH_LINK_TYPE_FAST_ETH:
 266         case QETH_LINK_TYPE_LANE_ETH100:
 267                 cmd->base.speed = SPEED_100;
 268                 cmd->base.port = PORT_TP;
 269                 break;
 270         case QETH_LINK_TYPE_GBIT_ETH:
 271         case QETH_LINK_TYPE_LANE_ETH1000:
 272                 cmd->base.speed = SPEED_1000;
 273                 cmd->base.port = PORT_FIBRE;
 274                 break;
 275         case QETH_LINK_TYPE_10GBIT_ETH:
 276                 cmd->base.speed = SPEED_10000;
 277                 cmd->base.port = PORT_FIBRE;
 278                 break;
 279         case QETH_LINK_TYPE_25GBIT_ETH:
 280                 cmd->base.speed = SPEED_25000;
 281                 cmd->base.port = PORT_FIBRE;
 282                 break;
 283         default:
 284                 cmd->base.speed = SPEED_10;
 285                 cmd->base.port = PORT_TP;
 286         }
 287         qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
 288
 289         /* Check if we can obtain more accurate information.     */
 290         /* If QUERY_CARD_INFO command is not supported or fails, */
 291         /* just return the heuristics that was filled above.     */
 292         rc = qeth_query_card_info(card, &carrier_info);
 293         if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
 294                 return 0;
 295         if (rc) /* report error from the hardware operation */
 296                 return rc;
 297         /* on success, fill in the information got from the hardware */
 298
 299         netdev_dbg(netdev,
 300         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
 301                         carrier_info.card_type,
 302                         carrier_info.port_mode,
 303                         carrier_info.port_speed);
 304
 305         /* Update attributes for which we've obtained more authoritative */
 306         /* information, leave the rest the way they where filled above.  */
 307         switch (carrier_info.card_type) {
 308         case CARD_INFO_TYPE_1G_COPPER_A:
 309         case CARD_INFO_TYPE_1G_COPPER_B:
 310                 cmd->base.port = PORT_TP;
 311                 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
 312                 break;
 313         case CARD_INFO_TYPE_1G_FIBRE_A:
 314         case CARD_INFO_TYPE_1G_FIBRE_B:
 315                 cmd->base.port = PORT_FIBRE;
 316                 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
 317                 break;
 318         case CARD_INFO_TYPE_10G_FIBRE_A:
 319         case CARD_INFO_TYPE_10G_FIBRE_B:
 320                 cmd->base.port = PORT_FIBRE;
 321                 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
 322                 break;
 323         }
 324
 325         switch (carrier_info.port_mode) {
 326         case CARD_INFO_PORTM_FULLDUPLEX:
 327                 cmd->base.duplex = DUPLEX_FULL;
 328                 break;
 329         case CARD_INFO_PORTM_HALFDUPLEX:
 330                 cmd->base.duplex = DUPLEX_HALF;
 331                 break;
 332         }
 333
 334         switch (carrier_info.port_speed) {
 335         case CARD_INFO_PORTS_10M:
 336                 cmd->base.speed = SPEED_10;
 337                 break;
 338         case CARD_INFO_PORTS_100M:
 339                 cmd->base.speed = SPEED_100;
 340                 break;
 341         case CARD_INFO_PORTS_1G:
 342                 cmd->base.speed = SPEED_1000;
 343                 break;
 344         case CARD_INFO_PORTS_10G:
 345                 cmd->base.speed = SPEED_10000;
 346                 break;
 347         case CARD_INFO_PORTS_25G:
 348                 cmd->base.speed = SPEED_25000;
 349                 break;
 350         }
 351
 352         return 0;
 353 }
 354
 355 const struct ethtool_ops qeth_ethtool_ops = {
 356         .get_link = ethtool_op_get_link,
 357         .get_ringparam = qeth_get_ringparam,
 358         .get_strings = qeth_get_strings,
 359         .get_ethtool_stats = qeth_get_ethtool_stats,
 360         .get_sset_count = qeth_get_sset_count,
 361         .get_drvinfo = qeth_get_drvinfo,
 362         .get_link_ksettings = qeth_get_link_ksettings,
 363 };
 364
 365 const struct ethtool_ops qeth_osn_ethtool_ops = {
 366         .get_strings = qeth_get_strings,
 367         .get_ethtool_stats = qeth_get_ethtool_stats,
 368         .get_sset_count = qeth_get_sset_count,
 369         .get_drvinfo = qeth_get_drvinfo,
 370 };