drivers/net/ethernet/aquantia/atlantic/aq_ethtool.c - third_party/linux - Git at Google

 /*
  * aQuantia Corporation Network Driver
  * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
  * version 2, as published by the Free Software Foundation.
  */

 /* File aq_ethtool.c: Definition of ethertool related functions. */

 #include "aq_ethtool.h"
 #include "aq_nic.h"

 static void aq_ethtool_get_regs(struct net_device *ndev,
 				struct ethtool_regs *regs, void *p)
 {
 	struct aq_nic_s *aq_nic = netdev_priv(ndev);
 	u32 regs_count = aq_nic_get_regs_count(aq_nic);

 	memset(p, 0, regs_count * sizeof(u32));
 	aq_nic_get_regs(aq_nic, regs, p);
 }

 static int aq_ethtool_get_regs_len(struct net_device *ndev)
 {
 	struct aq_nic_s *aq_nic = netdev_priv(ndev);
 	u32 regs_count = aq_nic_get_regs_count(aq_nic);

 	return regs_count * sizeof(u32);
 }

 static u32 aq_ethtool_get_link(struct net_device *ndev)
 {
 	return ethtool_op_get_link(ndev);
 }

 static int aq_ethtool_get_link_ksettings(struct net_device *ndev,
 					 struct ethtool_link_ksettings *cmd)
 {
 	struct aq_nic_s *aq_nic = netdev_priv(ndev);

 	aq_nic_get_link_ksettings(aq_nic, cmd);
 	cmd->base.speed = netif_carrier_ok(ndev) ?
 				aq_nic_get_link_speed(aq_nic) : 0U;

 	return 0;
 }

 static int
 aq_ethtool_set_link_ksettings(struct net_device *ndev,
 			      const struct ethtool_link_ksettings *cmd)
 {
 	struct aq_nic_s *aq_nic = netdev_priv(ndev);

 	return aq_nic_set_link_ksettings(aq_nic, cmd);
 }

 static const char aq_ethtool_stat_names[][ETH_GSTRING_LEN] = {
 	"InPackets",
 	"InUCast",
 	"InMCast",
 	"InBCast",
 	"InErrors",
 	"OutPackets",
 	"OutUCast",
 	"OutMCast",
 	"OutBCast",
 	"InUCastOctets",
 	"OutUCastOctets",
 	"InMCastOctets",
 	"OutMCastOctets",
 	"InBCastOctets",
 	"OutBCastOctets",
 	"InOctets",
 	"OutOctets",
 	"InPacketsDma",
 	"OutPacketsDma",
 	"InOctetsDma",
 	"OutOctetsDma",
 	"InDroppedDma",
 };

 static const char aq_ethtool_queue_stat_names[][ETH_GSTRING_LEN] = {
 	"Queue[%d] InPackets",
 	"Queue[%d] OutPackets",
 	"Queue[%d] Restarts",
 	"Queue[%d] InJumboPackets",
 	"Queue[%d] InLroPackets",
 	"Queue[%d] InErrors",
 };

 static void aq_ethtool_stats(struct net_device *ndev,
 			     struct ethtool_stats *stats, u64 *data)
 {
 	struct aq_nic_s *aq_nic = netdev_priv(ndev);
 	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);

 	memset(data, 0, (ARRAY_SIZE(aq_ethtool_stat_names) +
 				ARRAY_SIZE(aq_ethtool_queue_stat_names) *
 				cfg->vecs) * sizeof(u64));
 	aq_nic_get_stats(aq_nic, data);
 }

 static void aq_ethtool_get_drvinfo(struct net_device *ndev,
 				   struct ethtool_drvinfo *drvinfo)
 {
 	struct aq_nic_s *aq_nic = netdev_priv(ndev);
 	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);
 	struct pci_dev *pdev = to_pci_dev(ndev->dev.parent);
 	u32 firmware_version = aq_nic_get_fw_version(aq_nic);
 	u32 regs_count = aq_nic_get_regs_count(aq_nic);

 	strlcat(drvinfo->driver, AQ_CFG_DRV_NAME, sizeof(drvinfo->driver));
 	strlcat(drvinfo->version, AQ_CFG_DRV_VERSION, sizeof(drvinfo->version));

 	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
 		 "%u.%u.%u", firmware_version >> 24,
 		 (firmware_version >> 16) & 0xFFU, firmware_version & 0xFFFFU);

 	strlcpy(drvinfo->bus_info, pdev ? pci_name(pdev) : "",
 		sizeof(drvinfo->bus_info));
 	drvinfo->n_stats = ARRAY_SIZE(aq_ethtool_stat_names) +
 		cfg->vecs * ARRAY_SIZE(aq_ethtool_queue_stat_names);
 	drvinfo->testinfo_len = 0;
 	drvinfo->regdump_len = regs_count;
 	drvinfo->eedump_len = 0;
 }

 static void aq_ethtool_get_strings(struct net_device *ndev,
 				   u32 stringset, u8 *data)
 {
 	int i, si;
 	struct aq_nic_s *aq_nic = netdev_priv(ndev);
 	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);
 	u8 *p = data;

 	if (stringset == ETH_SS_STATS) {
 		memcpy(p, *aq_ethtool_stat_names,
 		       sizeof(aq_ethtool_stat_names));
 		p = p + sizeof(aq_ethtool_stat_names);
 		for (i = 0; i < cfg->vecs; i++) {
 			for (si = 0;
 				si < ARRAY_SIZE(aq_ethtool_queue_stat_names);
 				si++) {
 				snprintf(p, ETH_GSTRING_LEN,
 					 aq_ethtool_queue_stat_names[si], i);
 				p += ETH_GSTRING_LEN;
 			}
 		}
 	}
 }

 static int aq_ethtool_get_sset_count(struct net_device *ndev, int stringset)
 {
 	int ret = 0;
 	struct aq_nic_s *aq_nic = netdev_priv(ndev);
 	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);

 	switch (stringset) {
 	case ETH_SS_STATS:
 		ret = ARRAY_SIZE(aq_ethtool_stat_names) +
 			cfg->vecs * ARRAY_SIZE(aq_ethtool_queue_stat_names);
 		break;
 	default:
 		ret = -EOPNOTSUPP;
 	}
 	return ret;
 }

 static u32 aq_ethtool_get_rss_indir_size(struct net_device *ndev)
 {
 	return AQ_CFG_RSS_INDIRECTION_TABLE_MAX;
 }

 static u32 aq_ethtool_get_rss_key_size(struct net_device *ndev)
 {
 	struct aq_nic_s *aq_nic = netdev_priv(ndev);
 	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);

 	return sizeof(cfg->aq_rss.hash_secret_key);
 }

 static int aq_ethtool_get_rss(struct net_device *ndev, u32 *indir, u8 *key,
 			      u8 *hfunc)
 {
 	struct aq_nic_s *aq_nic = netdev_priv(ndev);
 	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);
 	unsigned int i = 0U;

 	if (hfunc)
 		*hfunc = ETH_RSS_HASH_TOP; /* Toeplitz */
 	if (indir) {
 		for (i = 0; i < AQ_CFG_RSS_INDIRECTION_TABLE_MAX; i++)
 			indir[i] = cfg->aq_rss.indirection_table[i];
 	}
 	if (key)
 		memcpy(key, cfg->aq_rss.hash_secret_key,
 		       sizeof(cfg->aq_rss.hash_secret_key));
 	return 0;
 }

 static int aq_ethtool_get_rxnfc(struct net_device *ndev,
 				struct ethtool_rxnfc *cmd,
 				u32 *rule_locs)
 {
 	struct aq_nic_s *aq_nic = netdev_priv(ndev);
 	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);
 	int err = 0;

 	switch (cmd->cmd) {
 	case ETHTOOL_GRXRINGS:
 		cmd->data = cfg->vecs;
 		break;

 	default:
 		err = -EOPNOTSUPP;
 		break;
 	}

 	return err;
 }

 static int aq_ethtool_get_coalesce(struct net_device *ndev,
 				   struct ethtool_coalesce *coal)
 {
 	struct aq_nic_s *aq_nic = netdev_priv(ndev);
 	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);

 	if (cfg->itr == AQ_CFG_INTERRUPT_MODERATION_ON ||
 	    cfg->itr == AQ_CFG_INTERRUPT_MODERATION_AUTO) {
 		coal->rx_coalesce_usecs = cfg->rx_itr;
 		coal->tx_coalesce_usecs = cfg->tx_itr;
 		coal->rx_max_coalesced_frames = 0;
 		coal->tx_max_coalesced_frames = 0;
 	} else {
 		coal->rx_coalesce_usecs = 0;
 		coal->tx_coalesce_usecs = 0;
 		coal->rx_max_coalesced_frames = 1;
 		coal->tx_max_coalesced_frames = 1;
 	}
 	return 0;
 }

 static int aq_ethtool_set_coalesce(struct net_device *ndev,
 				   struct ethtool_coalesce *coal)
 {
 	struct aq_nic_s *aq_nic = netdev_priv(ndev);
 	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);

 	/* This is not yet supported
 	 */
 	if (coal->use_adaptive_rx_coalesce || coal->use_adaptive_tx_coalesce)
 		return -EOPNOTSUPP;

 	/* Atlantic only supports timing based coalescing
 	 */
 	if (coal->rx_max_coalesced_frames > 1 ||
 	    coal->rx_coalesce_usecs_irq ||
 	    coal->rx_max_coalesced_frames_irq)
 		return -EOPNOTSUPP;

 	if (coal->tx_max_coalesced_frames > 1 ||
 	    coal->tx_coalesce_usecs_irq ||
 	    coal->tx_max_coalesced_frames_irq)
 		return -EOPNOTSUPP;

 	/* We do not support frame counting. Check this
 	 */
 	if (!(coal->rx_max_coalesced_frames == !coal->rx_coalesce_usecs))
 		return -EOPNOTSUPP;
 	if (!(coal->tx_max_coalesced_frames == !coal->tx_coalesce_usecs))
 		return -EOPNOTSUPP;

 	if (coal->rx_coalesce_usecs > AQ_CFG_INTERRUPT_MODERATION_USEC_MAX ||
 	    coal->tx_coalesce_usecs > AQ_CFG_INTERRUPT_MODERATION_USEC_MAX)
 		return -EINVAL;

 	cfg->itr = AQ_CFG_INTERRUPT_MODERATION_ON;

 	cfg->rx_itr = coal->rx_coalesce_usecs;
 	cfg->tx_itr = coal->tx_coalesce_usecs;

 	return aq_nic_update_interrupt_moderation_settings(aq_nic);
 }

 const struct ethtool_ops aq_ethtool_ops = {
 	.get_link            = aq_ethtool_get_link,
 	.get_regs_len        = aq_ethtool_get_regs_len,
 	.get_regs            = aq_ethtool_get_regs,
 	.get_drvinfo         = aq_ethtool_get_drvinfo,
 	.get_strings         = aq_ethtool_get_strings,
 	.get_rxfh_indir_size = aq_ethtool_get_rss_indir_size,
 	.get_rxfh_key_size   = aq_ethtool_get_rss_key_size,
 	.get_rxfh            = aq_ethtool_get_rss,
 	.get_rxnfc           = aq_ethtool_get_rxnfc,
 	.get_sset_count      = aq_ethtool_get_sset_count,
 	.get_ethtool_stats   = aq_ethtool_stats,
 	.get_link_ksettings  = aq_ethtool_get_link_ksettings,
 	.set_link_ksettings  = aq_ethtool_set_link_ksettings,
 	.get_coalesce	     = aq_ethtool_get_coalesce,
 	.set_coalesce	     = aq_ethtool_set_coalesce,
 };
	/*
	* aQuantia Corporation Network Driver
	* Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
	*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms and conditions of the GNU General Public License,
	* version 2, as published by the Free Software Foundation.
	*/

	/* File aq_ethtool.c: Definition of ethertool related functions. */

	#include "aq_ethtool.h"
	#include "aq_nic.h"

	static void aq_ethtool_get_regs(struct net_device *ndev,
	struct ethtool_regs regs, void p)
	{
	struct aq_nic_s *aq_nic = netdev_priv(ndev);
	u32 regs_count = aq_nic_get_regs_count(aq_nic);

	memset(p, 0, regs_count * sizeof(u32));
	aq_nic_get_regs(aq_nic, regs, p);
	}

	static int aq_ethtool_get_regs_len(struct net_device *ndev)
	{
	struct aq_nic_s *aq_nic = netdev_priv(ndev);
	u32 regs_count = aq_nic_get_regs_count(aq_nic);

	return regs_count * sizeof(u32);
	}

	static u32 aq_ethtool_get_link(struct net_device *ndev)
	{
	return ethtool_op_get_link(ndev);
	}

	static int aq_ethtool_get_link_ksettings(struct net_device *ndev,
	struct ethtool_link_ksettings *cmd)
	{
	struct aq_nic_s *aq_nic = netdev_priv(ndev);

	aq_nic_get_link_ksettings(aq_nic, cmd);
	cmd->base.speed = netif_carrier_ok(ndev) ?
	aq_nic_get_link_speed(aq_nic) : 0U;

	return 0;
	}

	static int
	aq_ethtool_set_link_ksettings(struct net_device *ndev,
	const struct ethtool_link_ksettings *cmd)
	{
	struct aq_nic_s *aq_nic = netdev_priv(ndev);

	return aq_nic_set_link_ksettings(aq_nic, cmd);
	}

	static const char aq_ethtool_stat_names[][ETH_GSTRING_LEN] = {
	"InPackets",
	"InUCast",
	"InMCast",
	"InBCast",
	"InErrors",
	"OutPackets",
	"OutUCast",
	"OutMCast",
	"OutBCast",
	"InUCastOctets",
	"OutUCastOctets",
	"InMCastOctets",
	"OutMCastOctets",
	"InBCastOctets",
	"OutBCastOctets",
	"InOctets",
	"OutOctets",
	"InPacketsDma",
	"OutPacketsDma",
	"InOctetsDma",
	"OutOctetsDma",
	"InDroppedDma",
	};

	static const char aq_ethtool_queue_stat_names[][ETH_GSTRING_LEN] = {
	"Queue[%d] InPackets",
	"Queue[%d] OutPackets",
	"Queue[%d] Restarts",
	"Queue[%d] InJumboPackets",
	"Queue[%d] InLroPackets",
	"Queue[%d] InErrors",
	};

	static void aq_ethtool_stats(struct net_device *ndev,
	struct ethtool_stats stats, u64 data)
	{
	struct aq_nic_s *aq_nic = netdev_priv(ndev);
	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);

	memset(data, 0, (ARRAY_SIZE(aq_ethtool_stat_names) +
	ARRAY_SIZE(aq_ethtool_queue_stat_names) *
	cfg->vecs) * sizeof(u64));
	aq_nic_get_stats(aq_nic, data);
	}

	static void aq_ethtool_get_drvinfo(struct net_device *ndev,
	struct ethtool_drvinfo *drvinfo)
	{
	struct aq_nic_s *aq_nic = netdev_priv(ndev);
	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);
	struct pci_dev *pdev = to_pci_dev(ndev->dev.parent);
	u32 firmware_version = aq_nic_get_fw_version(aq_nic);
	u32 regs_count = aq_nic_get_regs_count(aq_nic);

	strlcat(drvinfo->driver, AQ_CFG_DRV_NAME, sizeof(drvinfo->driver));
	strlcat(drvinfo->version, AQ_CFG_DRV_VERSION, sizeof(drvinfo->version));

	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
	"%u.%u.%u", firmware_version >> 24,
	(firmware_version >> 16) & 0xFFU, firmware_version & 0xFFFFU);

	strlcpy(drvinfo->bus_info, pdev ? pci_name(pdev) : "",
	sizeof(drvinfo->bus_info));
	drvinfo->n_stats = ARRAY_SIZE(aq_ethtool_stat_names) +
	cfg->vecs * ARRAY_SIZE(aq_ethtool_queue_stat_names);
	drvinfo->testinfo_len = 0;
	drvinfo->regdump_len = regs_count;
	drvinfo->eedump_len = 0;
	}

	static void aq_ethtool_get_strings(struct net_device *ndev,
	u32 stringset, u8 *data)
	{
	int i, si;
	struct aq_nic_s *aq_nic = netdev_priv(ndev);
	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);
	u8 *p = data;

	if (stringset == ETH_SS_STATS) {
	memcpy(p, *aq_ethtool_stat_names,
	sizeof(aq_ethtool_stat_names));
	p = p + sizeof(aq_ethtool_stat_names);
	for (i = 0; i < cfg->vecs; i++) {
	for (si = 0;
	si < ARRAY_SIZE(aq_ethtool_queue_stat_names);
	si++) {
	snprintf(p, ETH_GSTRING_LEN,
	aq_ethtool_queue_stat_names[si], i);
	p += ETH_GSTRING_LEN;
	}
	}
	}
	}

	static int aq_ethtool_get_sset_count(struct net_device *ndev, int stringset)
	{
	int ret = 0;
	struct aq_nic_s *aq_nic = netdev_priv(ndev);
	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);

	switch (stringset) {
	case ETH_SS_STATS:
	ret = ARRAY_SIZE(aq_ethtool_stat_names) +
	cfg->vecs * ARRAY_SIZE(aq_ethtool_queue_stat_names);
	break;
	default:
	ret = -EOPNOTSUPP;
	}
	return ret;
	}

	static u32 aq_ethtool_get_rss_indir_size(struct net_device *ndev)
	{
	return AQ_CFG_RSS_INDIRECTION_TABLE_MAX;
	}

	static u32 aq_ethtool_get_rss_key_size(struct net_device *ndev)
	{
	struct aq_nic_s *aq_nic = netdev_priv(ndev);
	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);

	return sizeof(cfg->aq_rss.hash_secret_key);
	}

	static int aq_ethtool_get_rss(struct net_device ndev, u32 indir, u8 *key,
	u8 *hfunc)
	{
	struct aq_nic_s *aq_nic = netdev_priv(ndev);
	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);
	unsigned int i = 0U;

	if (hfunc)
	hfunc = ETH_RSS_HASH_TOP; / Toeplitz */
	if (indir) {
	for (i = 0; i < AQ_CFG_RSS_INDIRECTION_TABLE_MAX; i++)
	indir[i] = cfg->aq_rss.indirection_table[i];
	}
	if (key)
	memcpy(key, cfg->aq_rss.hash_secret_key,
	sizeof(cfg->aq_rss.hash_secret_key));
	return 0;
	}

	static int aq_ethtool_get_rxnfc(struct net_device *ndev,
	struct ethtool_rxnfc *cmd,
	u32 *rule_locs)
	{
	struct aq_nic_s *aq_nic = netdev_priv(ndev);
	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);
	int err = 0;

	switch (cmd->cmd) {
	case ETHTOOL_GRXRINGS:
	cmd->data = cfg->vecs;
	break;

	default:
	err = -EOPNOTSUPP;
	break;
	}

	return err;
	}

	static int aq_ethtool_get_coalesce(struct net_device *ndev,
	struct ethtool_coalesce *coal)
	{
	struct aq_nic_s *aq_nic = netdev_priv(ndev);
	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);

	if (cfg->itr == AQ_CFG_INTERRUPT_MODERATION_ON \|\|
	cfg->itr == AQ_CFG_INTERRUPT_MODERATION_AUTO) {
	coal->rx_coalesce_usecs = cfg->rx_itr;
	coal->tx_coalesce_usecs = cfg->tx_itr;
	coal->rx_max_coalesced_frames = 0;
	coal->tx_max_coalesced_frames = 0;
	} else {
	coal->rx_coalesce_usecs = 0;
	coal->tx_coalesce_usecs = 0;
	coal->rx_max_coalesced_frames = 1;
	coal->tx_max_coalesced_frames = 1;
	}
	return 0;
	}

	static int aq_ethtool_set_coalesce(struct net_device *ndev,
	struct ethtool_coalesce *coal)
	{
	struct aq_nic_s *aq_nic = netdev_priv(ndev);
	struct aq_nic_cfg_s *cfg = aq_nic_get_cfg(aq_nic);

	/* This is not yet supported
	*/
	if (coal->use_adaptive_rx_coalesce \|\| coal->use_adaptive_tx_coalesce)
	return -EOPNOTSUPP;

	/* Atlantic only supports timing based coalescing
	*/
	if (coal->rx_max_coalesced_frames > 1 \|\|
	coal->rx_coalesce_usecs_irq \|\|
	coal->rx_max_coalesced_frames_irq)
	return -EOPNOTSUPP;

	if (coal->tx_max_coalesced_frames > 1 \|\|
	coal->tx_coalesce_usecs_irq \|\|
	coal->tx_max_coalesced_frames_irq)
	return -EOPNOTSUPP;

	/* We do not support frame counting. Check this
	*/
	if (!(coal->rx_max_coalesced_frames == !coal->rx_coalesce_usecs))
	return -EOPNOTSUPP;
	if (!(coal->tx_max_coalesced_frames == !coal->tx_coalesce_usecs))
	return -EOPNOTSUPP;

	if (coal->rx_coalesce_usecs > AQ_CFG_INTERRUPT_MODERATION_USEC_MAX \|\|
	coal->tx_coalesce_usecs > AQ_CFG_INTERRUPT_MODERATION_USEC_MAX)
	return -EINVAL;

	cfg->itr = AQ_CFG_INTERRUPT_MODERATION_ON;

	cfg->rx_itr = coal->rx_coalesce_usecs;
	cfg->tx_itr = coal->tx_coalesce_usecs;

	return aq_nic_update_interrupt_moderation_settings(aq_nic);
	}

	const struct ethtool_ops aq_ethtool_ops = {
	.get_link = aq_ethtool_get_link,
	.get_regs_len = aq_ethtool_get_regs_len,
	.get_regs = aq_ethtool_get_regs,
	.get_drvinfo = aq_ethtool_get_drvinfo,
	.get_strings = aq_ethtool_get_strings,
	.get_rxfh_indir_size = aq_ethtool_get_rss_indir_size,
	.get_rxfh_key_size = aq_ethtool_get_rss_key_size,
	.get_rxfh = aq_ethtool_get_rss,
	.get_rxnfc = aq_ethtool_get_rxnfc,
	.get_sset_count = aq_ethtool_get_sset_count,
	.get_ethtool_stats = aq_ethtool_stats,
	.get_link_ksettings = aq_ethtool_get_link_ksettings,
	.set_link_ksettings = aq_ethtool_set_link_ksettings,
	.get_coalesce = aq_ethtool_get_coalesce,
	.set_coalesce = aq_ethtool_set_coalesce,
	};