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1// SPDX-License-Identifier: GPL-2.02/*3 * Copyright IBM Corp. 20184 */5 6#define KMSG_COMPONENT "qeth"7#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt8 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 23struct qeth_stats {24 char name[ETH_GSTRING_LEN];25 unsigned int offset;26};27 28static 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 QETH_TXQ_STAT("Doorbell", doorbell),43 QETH_TXQ_STAT("IRQ for frames", coal_frames),44 QETH_TXQ_STAT("Completion IRQ", completion_irq),45 QETH_TXQ_STAT("Completion yield", completion_yield),46 QETH_TXQ_STAT("Completion timer", completion_timer),47};48 49static const struct qeth_stats card_stats[] = {50 QETH_CARD_STAT("rx0 IO buffers", rx_bufs),51 QETH_CARD_STAT("rx0 HW csum skbs", rx_skb_csum),52 QETH_CARD_STAT("rx0 SG skbs", rx_sg_skbs),53 QETH_CARD_STAT("rx0 SG page frags", rx_sg_frags),54 QETH_CARD_STAT("rx0 SG page allocs", rx_sg_alloc_page),55 QETH_CARD_STAT("rx0 dropped, no memory", rx_dropped_nomem),56 QETH_CARD_STAT("rx0 dropped, bad format", rx_dropped_notsupp),57 QETH_CARD_STAT("rx0 dropped, runt", rx_dropped_runt),58};59 60#define TXQ_STATS_LEN ARRAY_SIZE(txq_stats)61#define CARD_STATS_LEN ARRAY_SIZE(card_stats)62 63static void qeth_add_stat_data(u64 **dst, void *src,64 const struct qeth_stats stats[],65 unsigned int size)66{67 unsigned int i;68 char *stat;69 70 for (i = 0; i < size; i++) {71 stat = (char *)src + stats[i].offset;72 **dst = *(u64 *)stat;73 (*dst)++;74 }75}76 77static void qeth_add_stat_strings(u8 **data, const char *prefix,78 const struct qeth_stats stats[],79 unsigned int size)80{81 unsigned int i;82 83 for (i = 0; i < size; i++)84 ethtool_sprintf(data, "%s%s", prefix, stats[i].name);85}86 87static int qeth_get_sset_count(struct net_device *dev, int stringset)88{89 struct qeth_card *card = dev->ml_priv;90 91 switch (stringset) {92 case ETH_SS_STATS:93 return CARD_STATS_LEN +94 card->qdio.no_out_queues * TXQ_STATS_LEN;95 default:96 return -EINVAL;97 }98}99 100static void qeth_get_ethtool_stats(struct net_device *dev,101 struct ethtool_stats *stats, u64 *data)102{103 struct qeth_card *card = dev->ml_priv;104 unsigned int i;105 106 qeth_add_stat_data(&data, &card->stats, card_stats, CARD_STATS_LEN);107 for (i = 0; i < card->qdio.no_out_queues; i++)108 qeth_add_stat_data(&data, &card->qdio.out_qs[i]->stats,109 txq_stats, TXQ_STATS_LEN);110}111 112static void __qeth_set_coalesce(struct net_device *dev,113 struct qeth_qdio_out_q *queue,114 struct ethtool_coalesce *coal)115{116 WRITE_ONCE(queue->coalesce_usecs, coal->tx_coalesce_usecs);117 WRITE_ONCE(queue->max_coalesced_frames, coal->tx_max_coalesced_frames);118 119 if (coal->tx_coalesce_usecs &&120 netif_running(dev) &&121 !qeth_out_queue_is_empty(queue))122 qeth_tx_arm_timer(queue, coal->tx_coalesce_usecs);123}124 125static int qeth_set_coalesce(struct net_device *dev,126 struct ethtool_coalesce *coal,127 struct kernel_ethtool_coalesce *kernel_coal,128 struct netlink_ext_ack *extack)129{130 struct qeth_card *card = dev->ml_priv;131 struct qeth_qdio_out_q *queue;132 unsigned int i;133 134 if (!IS_IQD(card))135 return -EOPNOTSUPP;136 137 if (!coal->tx_coalesce_usecs && !coal->tx_max_coalesced_frames)138 return -EINVAL;139 140 qeth_for_each_output_queue(card, queue, i)141 __qeth_set_coalesce(dev, queue, coal);142 143 return 0;144}145 146static void qeth_get_ringparam(struct net_device *dev,147 struct ethtool_ringparam *param,148 struct kernel_ethtool_ringparam *kernel_param,149 struct netlink_ext_ack *extack)150{151 struct qeth_card *card = dev->ml_priv;152 153 param->rx_max_pending = QDIO_MAX_BUFFERS_PER_Q;154 param->rx_mini_max_pending = 0;155 param->rx_jumbo_max_pending = 0;156 param->tx_max_pending = QDIO_MAX_BUFFERS_PER_Q;157 158 param->rx_pending = card->qdio.in_buf_pool.buf_count;159 param->rx_mini_pending = 0;160 param->rx_jumbo_pending = 0;161 param->tx_pending = QDIO_MAX_BUFFERS_PER_Q;162}163 164static void qeth_get_strings(struct net_device *dev, u32 stringset, u8 *data)165{166 struct qeth_card *card = dev->ml_priv;167 char prefix[ETH_GSTRING_LEN] = "";168 unsigned int i;169 170 switch (stringset) {171 case ETH_SS_STATS:172 qeth_add_stat_strings(&data, prefix, card_stats,173 CARD_STATS_LEN);174 for (i = 0; i < card->qdio.no_out_queues; i++) {175 scnprintf(prefix, ETH_GSTRING_LEN, "tx%u ", i);176 qeth_add_stat_strings(&data, prefix, txq_stats,177 TXQ_STATS_LEN);178 }179 break;180 default:181 WARN_ON(1);182 break;183 }184}185 186static void qeth_get_drvinfo(struct net_device *dev,187 struct ethtool_drvinfo *info)188{189 struct qeth_card *card = dev->ml_priv;190 191 strscpy(info->driver, IS_LAYER2(card) ? "qeth_l2" : "qeth_l3",192 sizeof(info->driver));193 strscpy(info->fw_version, card->info.mcl_level,194 sizeof(info->fw_version));195 scnprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",196 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));197}198 199static void qeth_get_channels(struct net_device *dev,200 struct ethtool_channels *channels)201{202 struct qeth_card *card = dev->ml_priv;203 204 channels->max_rx = dev->num_rx_queues;205 channels->max_tx = card->qdio.no_out_queues;206 channels->max_other = 0;207 channels->max_combined = 0;208 channels->rx_count = dev->real_num_rx_queues;209 channels->tx_count = dev->real_num_tx_queues;210 channels->other_count = 0;211 channels->combined_count = 0;212}213 214static int qeth_set_channels(struct net_device *dev,215 struct ethtool_channels *channels)216{217 struct qeth_priv *priv = netdev_priv(dev);218 struct qeth_card *card = dev->ml_priv;219 int rc;220 221 if (channels->rx_count == 0 || channels->tx_count == 0)222 return -EINVAL;223 if (channels->tx_count > card->qdio.no_out_queues)224 return -EINVAL;225 226 /* Prio-queueing needs all TX queues: */227 if (qeth_uses_tx_prio_queueing(card))228 return -EPERM;229 230 if (IS_IQD(card)) {231 if (channels->tx_count < QETH_IQD_MIN_TXQ)232 return -EINVAL;233 234 /* Reject downgrade while running. It could push displaced235 * ucast flows onto txq0, which is reserved for mcast.236 */237 if (netif_running(dev) &&238 channels->tx_count < dev->real_num_tx_queues)239 return -EPERM;240 }241 242 rc = qeth_set_real_num_tx_queues(card, channels->tx_count);243 if (!rc)244 priv->tx_wanted_queues = channels->tx_count;245 246 return rc;247}248 249static int qeth_get_ts_info(struct net_device *dev,250 struct kernel_ethtool_ts_info *info)251{252 struct qeth_card *card = dev->ml_priv;253 254 if (!IS_IQD(card))255 return -EOPNOTSUPP;256 257 return ethtool_op_get_ts_info(dev, info);258}259 260static int qeth_get_tunable(struct net_device *dev,261 const struct ethtool_tunable *tuna, void *data)262{263 struct qeth_priv *priv = netdev_priv(dev);264 265 switch (tuna->id) {266 case ETHTOOL_RX_COPYBREAK:267 *(u32 *)data = priv->rx_copybreak;268 return 0;269 default:270 return -EOPNOTSUPP;271 }272}273 274static int qeth_set_tunable(struct net_device *dev,275 const struct ethtool_tunable *tuna,276 const void *data)277{278 struct qeth_priv *priv = netdev_priv(dev);279 280 switch (tuna->id) {281 case ETHTOOL_RX_COPYBREAK:282 WRITE_ONCE(priv->rx_copybreak, *(u32 *)data);283 return 0;284 default:285 return -EOPNOTSUPP;286 }287}288 289static int qeth_get_per_queue_coalesce(struct net_device *dev, u32 __queue,290 struct ethtool_coalesce *coal)291{292 struct qeth_card *card = dev->ml_priv;293 struct qeth_qdio_out_q *queue;294 295 if (!IS_IQD(card))296 return -EOPNOTSUPP;297 298 if (__queue >= card->qdio.no_out_queues)299 return -EINVAL;300 301 queue = card->qdio.out_qs[__queue];302 303 coal->tx_coalesce_usecs = queue->coalesce_usecs;304 coal->tx_max_coalesced_frames = queue->max_coalesced_frames;305 return 0;306}307 308static int qeth_set_per_queue_coalesce(struct net_device *dev, u32 queue,309 struct ethtool_coalesce *coal)310{311 struct qeth_card *card = dev->ml_priv;312 313 if (!IS_IQD(card))314 return -EOPNOTSUPP;315 316 if (queue >= card->qdio.no_out_queues)317 return -EINVAL;318 319 if (!coal->tx_coalesce_usecs && !coal->tx_max_coalesced_frames)320 return -EINVAL;321 322 __qeth_set_coalesce(dev, card->qdio.out_qs[queue], coal);323 return 0;324}325 326/* Helper function to fill 'advertising' and 'supported' which are the same. */327/* Autoneg and full-duplex are supported and advertised unconditionally. */328/* Always advertise and support all speeds up to specified, and only one */329/* specified port type. */330static void qeth_set_ethtool_link_modes(struct ethtool_link_ksettings *cmd,331 enum qeth_link_mode link_mode)332{333 ethtool_link_ksettings_zero_link_mode(cmd, supported);334 ethtool_link_ksettings_zero_link_mode(cmd, advertising);335 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);336 337 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);338 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);339 340 switch (cmd->base.port) {341 case PORT_TP:342 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);343 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);344 345 switch (cmd->base.speed) {346 case SPEED_10000:347 ethtool_link_ksettings_add_link_mode(cmd, supported,348 10000baseT_Full);349 ethtool_link_ksettings_add_link_mode(cmd, advertising,350 10000baseT_Full);351 fallthrough;352 case SPEED_1000:353 ethtool_link_ksettings_add_link_mode(cmd, supported,354 1000baseT_Full);355 ethtool_link_ksettings_add_link_mode(cmd, advertising,356 1000baseT_Full);357 ethtool_link_ksettings_add_link_mode(cmd, supported,358 1000baseT_Half);359 ethtool_link_ksettings_add_link_mode(cmd, advertising,360 1000baseT_Half);361 fallthrough;362 case SPEED_100:363 ethtool_link_ksettings_add_link_mode(cmd, supported,364 100baseT_Full);365 ethtool_link_ksettings_add_link_mode(cmd, advertising,366 100baseT_Full);367 ethtool_link_ksettings_add_link_mode(cmd, supported,368 100baseT_Half);369 ethtool_link_ksettings_add_link_mode(cmd, advertising,370 100baseT_Half);371 fallthrough;372 case SPEED_10:373 ethtool_link_ksettings_add_link_mode(cmd, supported,374 10baseT_Full);375 ethtool_link_ksettings_add_link_mode(cmd, advertising,376 10baseT_Full);377 ethtool_link_ksettings_add_link_mode(cmd, supported,378 10baseT_Half);379 ethtool_link_ksettings_add_link_mode(cmd, advertising,380 10baseT_Half);381 break;382 default:383 break;384 }385 386 break;387 case PORT_FIBRE:388 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);389 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);390 391 switch (cmd->base.speed) {392 case SPEED_25000:393 ethtool_link_ksettings_add_link_mode(cmd, supported,394 25000baseSR_Full);395 ethtool_link_ksettings_add_link_mode(cmd, advertising,396 25000baseSR_Full);397 break;398 case SPEED_10000:399 if (link_mode == QETH_LINK_MODE_FIBRE_LONG) {400 ethtool_link_ksettings_add_link_mode(cmd, supported,401 10000baseLR_Full);402 ethtool_link_ksettings_add_link_mode(cmd, advertising,403 10000baseLR_Full);404 } else if (link_mode == QETH_LINK_MODE_FIBRE_SHORT) {405 ethtool_link_ksettings_add_link_mode(cmd, supported,406 10000baseSR_Full);407 ethtool_link_ksettings_add_link_mode(cmd, advertising,408 10000baseSR_Full);409 }410 break;411 case SPEED_1000:412 ethtool_link_ksettings_add_link_mode(cmd, supported,413 1000baseX_Full);414 ethtool_link_ksettings_add_link_mode(cmd, advertising,415 1000baseX_Full);416 break;417 default:418 break;419 }420 421 break;422 default:423 break;424 }425}426 427static int qeth_get_link_ksettings(struct net_device *netdev,428 struct ethtool_link_ksettings *cmd)429{430 struct qeth_card *card = netdev->ml_priv;431 432 QETH_CARD_TEXT(card, 4, "ethtglks");433 cmd->base.speed = card->info.link_info.speed;434 cmd->base.duplex = card->info.link_info.duplex;435 cmd->base.port = card->info.link_info.port;436 cmd->base.autoneg = AUTONEG_ENABLE;437 cmd->base.phy_address = 0;438 cmd->base.mdio_support = 0;439 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;440 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;441 442 qeth_set_ethtool_link_modes(cmd, card->info.link_info.link_mode);443 444 return 0;445}446 447const struct ethtool_ops qeth_ethtool_ops = {448 .supported_coalesce_params = ETHTOOL_COALESCE_TX_USECS |449 ETHTOOL_COALESCE_TX_MAX_FRAMES,450 .get_link = ethtool_op_get_link,451 .set_coalesce = qeth_set_coalesce,452 .get_ringparam = qeth_get_ringparam,453 .get_strings = qeth_get_strings,454 .get_ethtool_stats = qeth_get_ethtool_stats,455 .get_sset_count = qeth_get_sset_count,456 .get_drvinfo = qeth_get_drvinfo,457 .get_channels = qeth_get_channels,458 .set_channels = qeth_set_channels,459 .get_ts_info = qeth_get_ts_info,460 .get_tunable = qeth_get_tunable,461 .set_tunable = qeth_set_tunable,462 .get_per_queue_coalesce = qeth_get_per_queue_coalesce,463 .set_per_queue_coalesce = qeth_set_per_queue_coalesce,464 .get_link_ksettings = qeth_get_link_ksettings,465};466