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         QETH_TXQ_STAT("Queue stopped", stopped),
  42 };
  43
  44 static const struct qeth_stats card_stats[] = {
  45         QETH_CARD_STAT("rx0 IO buffers", rx_bufs),
  46         QETH_CARD_STAT("rx0 HW csum skbs", rx_skb_csum),
  47         QETH_CARD_STAT("rx0 SG skbs", rx_sg_skbs),
  48         QETH_CARD_STAT("rx0 SG page frags", rx_sg_frags),
  49         QETH_CARD_STAT("rx0 SG page allocs", rx_sg_alloc_page),
  50 };
  51
  52 #define TXQ_STATS_LEN   ARRAY_SIZE(txq_stats)
  53 #define CARD_STATS_LEN  ARRAY_SIZE(card_stats)
  54
  55 static void qeth_add_stat_data(u64 **dst, void *src,
  56                                const struct qeth_stats stats[],
  57                                unsigned int size)
  58 {
  59         unsigned int i;
  60         char *stat;
  61
  62         for (i = 0; i < size; i++) {
  63                 stat = (char *)src + stats[i].offset;
  64                 **dst = *(u64 *)stat;
  65                 (*dst)++;
  66         }
  67 }
  68
  69 static void qeth_add_stat_strings(u8 **data, const char *prefix,
  70                                   const struct qeth_stats stats[],
  71                                   unsigned int size)
  72 {
  73         unsigned int i;
  74
  75         for (i = 0; i < size; i++) {
  76                 snprintf(*data, ETH_GSTRING_LEN, "%s%s", prefix, stats[i].name);
  77                 *data += ETH_GSTRING_LEN;
  78         }
  79 }
  80
  81 static int qeth_get_sset_count(struct net_device *dev, int stringset)
  82 {
  83         struct qeth_card *card = dev->ml_priv;
  84
  85         switch (stringset) {
  86         case ETH_SS_STATS:
  87                 return CARD_STATS_LEN +
  88                        card->qdio.no_out_queues * TXQ_STATS_LEN;
  89         default:
  90                 return -EINVAL;
  91         }
  92 }
  93
  94 static void qeth_get_ethtool_stats(struct net_device *dev,
  95                                    struct ethtool_stats *stats, u64 *data)
  96 {
  97         struct qeth_card *card = dev->ml_priv;
  98         unsigned int i;
  99
 100         qeth_add_stat_data(&data, &card->stats, card_stats, CARD_STATS_LEN);
 101         for (i = 0; i < card->qdio.no_out_queues; i++)
 102                 qeth_add_stat_data(&data, &card->qdio.out_qs[i]->stats,
 103                                    txq_stats, TXQ_STATS_LEN);
 104 }
 105
 106 static void qeth_get_ringparam(struct net_device *dev,
 107                                struct ethtool_ringparam *param)
 108 {
 109         struct qeth_card *card = dev->ml_priv;
 110
 111         param->rx_max_pending = QDIO_MAX_BUFFERS_PER_Q;
 112         param->rx_mini_max_pending = 0;
 113         param->rx_jumbo_max_pending = 0;
 114         param->tx_max_pending = QDIO_MAX_BUFFERS_PER_Q;
 115
 116         param->rx_pending = card->qdio.in_buf_pool.buf_count;
 117         param->rx_mini_pending = 0;
 118         param->rx_jumbo_pending = 0;
 119         param->tx_pending = QDIO_MAX_BUFFERS_PER_Q;
 120 }
 121
 122 static void qeth_get_strings(struct net_device *dev, u32 stringset, u8 *data)
 123 {
 124         struct qeth_card *card = dev->ml_priv;
 125         char prefix[ETH_GSTRING_LEN] = "";
 126         unsigned int i;
 127
 128         switch (stringset) {
 129         case ETH_SS_STATS:
 130                 qeth_add_stat_strings(&data, prefix, card_stats,
 131                                       CARD_STATS_LEN);
 132                 for (i = 0; i < card->qdio.no_out_queues; i++) {
 133                         snprintf(prefix, ETH_GSTRING_LEN, "tx%u ", i);
 134                         qeth_add_stat_strings(&data, prefix, txq_stats,
 135                                               TXQ_STATS_LEN);
 136                 }
 137                 break;
 138         default:
 139                 WARN_ON(1);
 140                 break;
 141         }
 142 }
 143
 144 static void qeth_get_drvinfo(struct net_device *dev,
 145                              struct ethtool_drvinfo *info)
 146 {
 147         struct qeth_card *card = dev->ml_priv;
 148
 149         strlcpy(info->driver, IS_LAYER2(card) ? "qeth_l2" : "qeth_l3",
 150                 sizeof(info->driver));
 151         strlcpy(info->version, "1.0", sizeof(info->version));
 152         strlcpy(info->fw_version, card->info.mcl_level,
 153                 sizeof(info->fw_version));
 154         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
 155                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
 156 }
 157
 158 static void qeth_get_channels(struct net_device *dev,
 159                               struct ethtool_channels *channels)
 160 {
 161         struct qeth_card *card = dev->ml_priv;
 162
 163         channels->max_rx = dev->num_rx_queues;
 164         channels->max_tx = card->qdio.no_out_queues;
 165         channels->max_other = 0;
 166         channels->max_combined = 0;
 167         channels->rx_count = dev->real_num_rx_queues;
 168         channels->tx_count = dev->real_num_tx_queues;
 169         channels->other_count = 0;
 170         channels->combined_count = 0;
 171 }
 172
 173 /* Helper function to fill 'advertising' and 'supported' which are the same. */
 174 /* Autoneg and full-duplex are supported and advertised unconditionally.     */
 175 /* Always advertise and support all speeds up to specified, and only one     */
 176 /* specified port type.                                                      */
 177 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
 178                                 int maxspeed, int porttype)
 179 {
 180         ethtool_link_ksettings_zero_link_mode(cmd, supported);
 181         ethtool_link_ksettings_zero_link_mode(cmd, advertising);
 182         ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
 183
 184         ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
 185         ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
 186
 187         switch (porttype) {
 188         case PORT_TP:
 189                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
 190                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
 191                 break;
 192         case PORT_FIBRE:
 193                 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
 194                 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
 195                 break;
 196         default:
 197                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
 198                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
 199                 WARN_ON_ONCE(1);
 200         }
 201
 202         /* partially does fall through, to also select lower speeds */
 203         switch (maxspeed) {
 204         case SPEED_25000:
 205                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 206                                                      25000baseSR_Full);
 207                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 208                                                      25000baseSR_Full);
 209                 break;
 210         case SPEED_10000:
 211                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 212                                                      10000baseT_Full);
 213                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 214                                                      10000baseT_Full);
 215                 /* fall through */
 216         case SPEED_1000:
 217                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 218                                                      1000baseT_Full);
 219                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 220                                                      1000baseT_Full);
 221                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 222                                                      1000baseT_Half);
 223                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 224                                                      1000baseT_Half);
 225                 /* fall through */
 226         case SPEED_100:
 227                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 228                                                      100baseT_Full);
 229                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 230                                                      100baseT_Full);
 231                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 232                                                      100baseT_Half);
 233                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 234                                                      100baseT_Half);
 235                 /* fall through */
 236         case SPEED_10:
 237                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 238                                                      10baseT_Full);
 239                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 240                                                      10baseT_Full);
 241                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 242                                                      10baseT_Half);
 243                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 244                                                      10baseT_Half);
 245                 break;
 246         default:
 247                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 248                                                      10baseT_Full);
 249                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 250                                                      10baseT_Full);
 251                 ethtool_link_ksettings_add_link_mode(cmd, supported,
 252                                                      10baseT_Half);
 253                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
 254                                                      10baseT_Half);
 255                 WARN_ON_ONCE(1);
 256         }
 257 }
 258
 259
 260 static int qeth_get_link_ksettings(struct net_device *netdev,
 261                                    struct ethtool_link_ksettings *cmd)
 262 {
 263         struct qeth_card *card = netdev->ml_priv;
 264         enum qeth_link_types link_type;
 265         struct carrier_info carrier_info;
 266         int rc;
 267
 268         if (IS_IQD(card) || IS_VM_NIC(card))
 269                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
 270         else
 271                 link_type = card->info.link_type;
 272
 273         cmd->base.duplex = DUPLEX_FULL;
 274         cmd->base.autoneg = AUTONEG_ENABLE;
 275         cmd->base.phy_address = 0;
 276         cmd->base.mdio_support = 0;
 277         cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
 278         cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
 279
 280         switch (link_type) {
 281         case QETH_LINK_TYPE_FAST_ETH:
 282         case QETH_LINK_TYPE_LANE_ETH100:
 283                 cmd->base.speed = SPEED_100;
 284                 cmd->base.port = PORT_TP;
 285                 break;
 286         case QETH_LINK_TYPE_GBIT_ETH:
 287         case QETH_LINK_TYPE_LANE_ETH1000:
 288                 cmd->base.speed = SPEED_1000;
 289                 cmd->base.port = PORT_FIBRE;
 290                 break;
 291         case QETH_LINK_TYPE_10GBIT_ETH:
 292                 cmd->base.speed = SPEED_10000;
 293                 cmd->base.port = PORT_FIBRE;
 294                 break;
 295         case QETH_LINK_TYPE_25GBIT_ETH:
 296                 cmd->base.speed = SPEED_25000;
 297                 cmd->base.port = PORT_FIBRE;
 298                 break;
 299         default:
 300                 cmd->base.speed = SPEED_10;
 301                 cmd->base.port = PORT_TP;
 302         }
 303         qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
 304
 305         /* Check if we can obtain more accurate information.     */
 306         /* If QUERY_CARD_INFO command is not supported or fails, */
 307         /* just return the heuristics that was filled above.     */
 308         rc = qeth_query_card_info(card, &carrier_info);
 309         if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
 310                 return 0;
 311         if (rc) /* report error from the hardware operation */
 312                 return rc;
 313         /* on success, fill in the information got from the hardware */
 314
 315         netdev_dbg(netdev,
 316         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
 317                         carrier_info.card_type,
 318                         carrier_info.port_mode,
 319                         carrier_info.port_speed);
 320
 321         /* Update attributes for which we've obtained more authoritative */
 322         /* information, leave the rest the way they where filled above.  */
 323         switch (carrier_info.card_type) {
 324         case CARD_INFO_TYPE_1G_COPPER_A:
 325         case CARD_INFO_TYPE_1G_COPPER_B:
 326                 cmd->base.port = PORT_TP;
 327                 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
 328                 break;
 329         case CARD_INFO_TYPE_1G_FIBRE_A:
 330         case CARD_INFO_TYPE_1G_FIBRE_B:
 331                 cmd->base.port = PORT_FIBRE;
 332                 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
 333                 break;
 334         case CARD_INFO_TYPE_10G_FIBRE_A:
 335         case CARD_INFO_TYPE_10G_FIBRE_B:
 336                 cmd->base.port = PORT_FIBRE;
 337                 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
 338                 break;
 339         }
 340
 341         switch (carrier_info.port_mode) {
 342         case CARD_INFO_PORTM_FULLDUPLEX:
 343                 cmd->base.duplex = DUPLEX_FULL;
 344                 break;
 345         case CARD_INFO_PORTM_HALFDUPLEX:
 346                 cmd->base.duplex = DUPLEX_HALF;
 347                 break;
 348         }
 349
 350         switch (carrier_info.port_speed) {
 351         case CARD_INFO_PORTS_10M:
 352                 cmd->base.speed = SPEED_10;
 353                 break;
 354         case CARD_INFO_PORTS_100M:
 355                 cmd->base.speed = SPEED_100;
 356                 break;
 357         case CARD_INFO_PORTS_1G:
 358                 cmd->base.speed = SPEED_1000;
 359                 break;
 360         case CARD_INFO_PORTS_10G:
 361                 cmd->base.speed = SPEED_10000;
 362                 break;
 363         case CARD_INFO_PORTS_25G:
 364                 cmd->base.speed = SPEED_25000;
 365                 break;
 366         }
 367
 368         return 0;
 369 }
 370
 371 const struct ethtool_ops qeth_ethtool_ops = {
 372         .get_link = ethtool_op_get_link,
 373         .get_ringparam = qeth_get_ringparam,
 374         .get_strings = qeth_get_strings,
 375         .get_ethtool_stats = qeth_get_ethtool_stats,
 376         .get_sset_count = qeth_get_sset_count,
 377         .get_drvinfo = qeth_get_drvinfo,
 378         .get_channels = qeth_get_channels,
 379         .get_link_ksettings = qeth_get_link_ksettings,
 380 };
 381
 382 const struct ethtool_ops qeth_osn_ethtool_ops = {
 383         .get_strings = qeth_get_strings,
 384         .get_ethtool_stats = qeth_get_ethtool_stats,
 385         .get_sset_count = qeth_get_sset_count,
 386         .get_drvinfo = qeth_get_drvinfo,
 387 };