// SPDX-License-Identifier: GPL-2.0-only
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/****************************************************************************
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* Driver for Solarflare network controllers and boards
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* Copyright 2005-2006 Fen Systems Ltd.
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* Copyright 2006-2013 Solarflare Communications Inc.
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*/
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#include <linux/netdevice.h>
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#include <linux/ethtool.h>
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#include <linux/rtnetlink.h>
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#include <linux/in.h>
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#include "net_driver.h"
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#include "workarounds.h"
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#include "selftest.h"
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#include "efx.h"
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#include "efx_channels.h"
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#include "rx_common.h"
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#include "tx_common.h"
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#include "ethtool_common.h"
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#include "filter.h"
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#include "nic.h"
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#define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
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/**************************************************************************
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*
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* Ethtool operations
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*
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**************************************************************************
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*/
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/* Identify device by flashing LEDs */
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static int efx_ethtool_phys_id(struct net_device *net_dev,
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enum ethtool_phys_id_state state)
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{
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struct efx_nic *efx = netdev_priv(net_dev);
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enum efx_led_mode mode = EFX_LED_DEFAULT;
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switch (state) {
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case ETHTOOL_ID_ON:
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mode = EFX_LED_ON;
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break;
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case ETHTOOL_ID_OFF:
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mode = EFX_LED_OFF;
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break;
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case ETHTOOL_ID_INACTIVE:
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mode = EFX_LED_DEFAULT;
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break;
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case ETHTOOL_ID_ACTIVE:
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return 1; /* cycle on/off once per second */
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}
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return efx_mcdi_set_id_led(efx, mode);
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}
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static int efx_ethtool_get_regs_len(struct net_device *net_dev)
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{
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return efx_nic_get_regs_len(netdev_priv(net_dev));
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}
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static void efx_ethtool_get_regs(struct net_device *net_dev,
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struct ethtool_regs *regs, void *buf)
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{
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struct efx_nic *efx = netdev_priv(net_dev);
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regs->version = efx->type->revision;
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efx_nic_get_regs(efx, buf);
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}
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/*
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* Each channel has a single IRQ and moderation timer, started by any
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* completion (or other event). Unless the module parameter
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* separate_tx_channels is set, IRQs and moderation are therefore
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* shared between RX and TX completions. In this case, when RX IRQ
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* moderation is explicitly changed then TX IRQ moderation is
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* automatically changed too, but otherwise we fail if the two values
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* are requested to be different.
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*
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* The hardware does not support a limit on the number of completions
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* before an IRQ, so we do not use the max_frames fields. We should
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* report and require that max_frames == (usecs != 0), but this would
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* invalidate existing user documentation.
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*
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* The hardware does not have distinct settings for interrupt
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* moderation while the previous IRQ is being handled, so we should
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* not use the 'irq' fields. However, an earlier developer
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* misunderstood the meaning of the 'irq' fields and the driver did
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* not support the standard fields. To avoid invalidating existing
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* user documentation, we report and accept changes through either the
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* standard or 'irq' fields. If both are changed at the same time, we
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* prefer the standard field.
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*
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* We implement adaptive IRQ moderation, but use a different algorithm
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* from that assumed in the definition of struct ethtool_coalesce.
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* Therefore we do not use any of the adaptive moderation parameters
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* in it.
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*/
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static int efx_ethtool_get_coalesce(struct net_device *net_dev,
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struct ethtool_coalesce *coalesce)
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{
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struct efx_nic *efx = netdev_priv(net_dev);
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unsigned int tx_usecs, rx_usecs;
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bool rx_adaptive;
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efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &rx_adaptive);
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coalesce->tx_coalesce_usecs = tx_usecs;
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coalesce->tx_coalesce_usecs_irq = tx_usecs;
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coalesce->rx_coalesce_usecs = rx_usecs;
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coalesce->rx_coalesce_usecs_irq = rx_usecs;
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coalesce->use_adaptive_rx_coalesce = rx_adaptive;
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return 0;
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}
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static int efx_ethtool_set_coalesce(struct net_device *net_dev,
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struct ethtool_coalesce *coalesce)
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{
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struct efx_nic *efx = netdev_priv(net_dev);
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struct efx_channel *channel;
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unsigned int tx_usecs, rx_usecs;
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bool adaptive, rx_may_override_tx;
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int rc;
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efx_get_irq_moderation(efx, &tx_usecs, &rx_usecs, &adaptive);
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if (coalesce->rx_coalesce_usecs != rx_usecs)
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rx_usecs = coalesce->rx_coalesce_usecs;
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else
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rx_usecs = coalesce->rx_coalesce_usecs_irq;
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adaptive = coalesce->use_adaptive_rx_coalesce;
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/* If channels are shared, TX IRQ moderation can be quietly
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* overridden unless it is changed from its old value.
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*/
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rx_may_override_tx = (coalesce->tx_coalesce_usecs == tx_usecs &&
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coalesce->tx_coalesce_usecs_irq == tx_usecs);
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if (coalesce->tx_coalesce_usecs != tx_usecs)
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tx_usecs = coalesce->tx_coalesce_usecs;
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else
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tx_usecs = coalesce->tx_coalesce_usecs_irq;
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rc = efx_init_irq_moderation(efx, tx_usecs, rx_usecs, adaptive,
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rx_may_override_tx);
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if (rc != 0)
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return rc;
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efx_for_each_channel(channel, efx)
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efx->type->push_irq_moderation(channel);
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return 0;
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}
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static void efx_ethtool_get_ringparam(struct net_device *net_dev,
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struct ethtool_ringparam *ring)
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{
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struct efx_nic *efx = netdev_priv(net_dev);
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ring->rx_max_pending = EFX_MAX_DMAQ_SIZE;
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ring->tx_max_pending = EFX_TXQ_MAX_ENT(efx);
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ring->rx_pending = efx->rxq_entries;
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ring->tx_pending = efx->txq_entries;
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}
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static int efx_ethtool_set_ringparam(struct net_device *net_dev,
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struct ethtool_ringparam *ring)
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{
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struct efx_nic *efx = netdev_priv(net_dev);
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u32 txq_entries;
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if (ring->rx_mini_pending || ring->rx_jumbo_pending ||
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ring->rx_pending > EFX_MAX_DMAQ_SIZE ||
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ring->tx_pending > EFX_TXQ_MAX_ENT(efx))
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return -EINVAL;
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if (ring->rx_pending < EFX_RXQ_MIN_ENT) {
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netif_err(efx, drv, efx->net_dev,
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"RX queues cannot be smaller than %u\n",
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EFX_RXQ_MIN_ENT);
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return -EINVAL;
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}
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txq_entries = max(ring->tx_pending, EFX_TXQ_MIN_ENT(efx));
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if (txq_entries != ring->tx_pending)
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netif_warn(efx, drv, efx->net_dev,
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"increasing TX queue size to minimum of %u\n",
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txq_entries);
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return efx_realloc_channels(efx, ring->rx_pending, txq_entries);
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}
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static void efx_ethtool_get_wol(struct net_device *net_dev,
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struct ethtool_wolinfo *wol)
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{
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struct efx_nic *efx = netdev_priv(net_dev);
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return efx->type->get_wol(efx, wol);
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}
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static int efx_ethtool_set_wol(struct net_device *net_dev,
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struct ethtool_wolinfo *wol)
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{
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struct efx_nic *efx = netdev_priv(net_dev);
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return efx->type->set_wol(efx, wol->wolopts);
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}
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static int efx_ethtool_get_ts_info(struct net_device *net_dev,
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struct ethtool_ts_info *ts_info)
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{
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struct efx_nic *efx = netdev_priv(net_dev);
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/* Software capabilities */
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ts_info->so_timestamping = (SOF_TIMESTAMPING_RX_SOFTWARE |
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SOF_TIMESTAMPING_SOFTWARE);
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ts_info->phc_index = -1;
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efx_ptp_get_ts_info(efx, ts_info);
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return 0;
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}
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const struct ethtool_ops efx_ethtool_ops = {
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.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
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ETHTOOL_COALESCE_USECS_IRQ |
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ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
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.get_drvinfo = efx_ethtool_get_drvinfo,
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.get_regs_len = efx_ethtool_get_regs_len,
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.get_regs = efx_ethtool_get_regs,
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.get_msglevel = efx_ethtool_get_msglevel,
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.set_msglevel = efx_ethtool_set_msglevel,
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.get_link = ethtool_op_get_link,
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.get_coalesce = efx_ethtool_get_coalesce,
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.set_coalesce = efx_ethtool_set_coalesce,
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.get_ringparam = efx_ethtool_get_ringparam,
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.set_ringparam = efx_ethtool_set_ringparam,
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.get_pauseparam = efx_ethtool_get_pauseparam,
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.set_pauseparam = efx_ethtool_set_pauseparam,
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.get_sset_count = efx_ethtool_get_sset_count,
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.self_test = efx_ethtool_self_test,
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.get_strings = efx_ethtool_get_strings,
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.set_phys_id = efx_ethtool_phys_id,
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.get_ethtool_stats = efx_ethtool_get_stats,
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.get_wol = efx_ethtool_get_wol,
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.set_wol = efx_ethtool_set_wol,
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.reset = efx_ethtool_reset,
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.get_rxnfc = efx_ethtool_get_rxnfc,
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.set_rxnfc = efx_ethtool_set_rxnfc,
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.get_rxfh_indir_size = efx_ethtool_get_rxfh_indir_size,
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.get_rxfh_key_size = efx_ethtool_get_rxfh_key_size,
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.get_rxfh = efx_ethtool_get_rxfh,
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.set_rxfh = efx_ethtool_set_rxfh,
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.get_rxfh_context = efx_ethtool_get_rxfh_context,
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.set_rxfh_context = efx_ethtool_set_rxfh_context,
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.get_ts_info = efx_ethtool_get_ts_info,
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.get_module_info = efx_ethtool_get_module_info,
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.get_module_eeprom = efx_ethtool_get_module_eeprom,
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.get_link_ksettings = efx_ethtool_get_link_ksettings,
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.set_link_ksettings = efx_ethtool_set_link_ksettings,
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.get_fecparam = efx_ethtool_get_fecparam,
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.set_fecparam = efx_ethtool_set_fecparam,
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};
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