drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c - linux/torvalds/linux - Git at Google

 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
 /* Copyright 2019 NXP */

 #include "dpaa2-eth.h"
 #include "dpaa2-mac.h"

 #define phylink_to_dpaa2_mac(config) \
 	container_of((config), struct dpaa2_mac, phylink_config)

 static int phy_mode(enum dpmac_eth_if eth_if, phy_interface_t *if_mode)
 {
 	*if_mode = PHY_INTERFACE_MODE_NA;

 	switch (eth_if) {
 	case DPMAC_ETH_IF_RGMII:
 		*if_mode = PHY_INTERFACE_MODE_RGMII;
 		break;
 	default:
 		return -EINVAL;
 	}

 	return 0;
 }

 /* Caller must call of_node_put on the returned value */
 static struct device_node *dpaa2_mac_get_node(u16 dpmac_id)
 {
 	struct device_node *dpmacs, *dpmac = NULL;
 	u32 id;
 	int err;

 	dpmacs = of_find_node_by_name(NULL, "dpmacs");
 	if (!dpmacs)
 		return NULL;

 	while ((dpmac = of_get_next_child(dpmacs, dpmac)) != NULL) {
 		err = of_property_read_u32(dpmac, "reg", &id);
 		if (err)
 			continue;
 		if (id == dpmac_id)
 			break;
 	}

 	of_node_put(dpmacs);

 	return dpmac;
 }

 static int dpaa2_mac_get_if_mode(struct device_node *node,
 				 struct dpmac_attr attr)
 {
 	phy_interface_t if_mode;
 	int err;

 	err = of_get_phy_mode(node, &if_mode);
 	if (!err)
 		return if_mode;

 	err = phy_mode(attr.eth_if, &if_mode);
 	if (!err)
 		return if_mode;

 	return err;
 }

 static bool dpaa2_mac_phy_mode_mismatch(struct dpaa2_mac *mac,
 					phy_interface_t interface)
 {
 	switch (interface) {
 	case PHY_INTERFACE_MODE_RGMII:
 	case PHY_INTERFACE_MODE_RGMII_ID:
 	case PHY_INTERFACE_MODE_RGMII_RXID:
 	case PHY_INTERFACE_MODE_RGMII_TXID:
 		return (interface != mac->if_mode);
 	default:
 		return true;
 	}
 }

 static void dpaa2_mac_validate(struct phylink_config *config,
 			       unsigned long *supported,
 			       struct phylink_link_state *state)
 {
 	struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
 	__ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };

 	if (state->interface != PHY_INTERFACE_MODE_NA &&
 	    dpaa2_mac_phy_mode_mismatch(mac, state->interface)) {
 		goto empty_set;
 	}

 	phylink_set_port_modes(mask);
 	phylink_set(mask, Autoneg);
 	phylink_set(mask, Pause);
 	phylink_set(mask, Asym_Pause);

 	switch (state->interface) {
 	case PHY_INTERFACE_MODE_RGMII:
 	case PHY_INTERFACE_MODE_RGMII_ID:
 	case PHY_INTERFACE_MODE_RGMII_RXID:
 	case PHY_INTERFACE_MODE_RGMII_TXID:
 		phylink_set(mask, 10baseT_Full);
 		phylink_set(mask, 100baseT_Full);
 		phylink_set(mask, 1000baseT_Full);
 		break;
 	default:
 		goto empty_set;
 	}

 	linkmode_and(supported, supported, mask);
 	linkmode_and(state->advertising, state->advertising, mask);

 	return;

 empty_set:
 	linkmode_zero(supported);
 }

 static void dpaa2_mac_config(struct phylink_config *config, unsigned int mode,
 			     const struct phylink_link_state *state)
 {
 	struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
 	struct dpmac_link_state *dpmac_state = &mac->state;
 	int err;

 	if (state->speed != SPEED_UNKNOWN)
 		dpmac_state->rate = state->speed;

 	if (state->duplex != DUPLEX_UNKNOWN) {
 		if (!state->duplex)
 			dpmac_state->options |= DPMAC_LINK_OPT_HALF_DUPLEX;
 		else
 			dpmac_state->options &= ~DPMAC_LINK_OPT_HALF_DUPLEX;
 	}

 	if (state->an_enabled)
 		dpmac_state->options |= DPMAC_LINK_OPT_AUTONEG;
 	else
 		dpmac_state->options &= ~DPMAC_LINK_OPT_AUTONEG;

 	if (state->pause & MLO_PAUSE_RX)
 		dpmac_state->options |= DPMAC_LINK_OPT_PAUSE;
 	else
 		dpmac_state->options &= ~DPMAC_LINK_OPT_PAUSE;

 	if (!!(state->pause & MLO_PAUSE_RX) ^ !!(state->pause & MLO_PAUSE_TX))
 		dpmac_state->options |= DPMAC_LINK_OPT_ASYM_PAUSE;
 	else
 		dpmac_state->options &= ~DPMAC_LINK_OPT_ASYM_PAUSE;

 	err = dpmac_set_link_state(mac->mc_io, 0,
 				   mac->mc_dev->mc_handle, dpmac_state);
 	if (err)
 		netdev_err(mac->net_dev, "dpmac_set_link_state() = %d\n", err);
 }

 static void dpaa2_mac_link_up(struct phylink_config *config, unsigned int mode,
 			      phy_interface_t interface, struct phy_device *phy)
 {
 	struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
 	struct dpmac_link_state *dpmac_state = &mac->state;
 	int err;

 	dpmac_state->up = 1;
 	err = dpmac_set_link_state(mac->mc_io, 0,
 				   mac->mc_dev->mc_handle, dpmac_state);
 	if (err)
 		netdev_err(mac->net_dev, "dpmac_set_link_state() = %d\n", err);
 }

 static void dpaa2_mac_link_down(struct phylink_config *config,
 				unsigned int mode,
 				phy_interface_t interface)
 {
 	struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
 	struct dpmac_link_state *dpmac_state = &mac->state;
 	int err;

 	dpmac_state->up = 0;
 	err = dpmac_set_link_state(mac->mc_io, 0,
 				   mac->mc_dev->mc_handle, dpmac_state);
 	if (err)
 		netdev_err(mac->net_dev, "dpmac_set_link_state() = %d\n", err);
 }

 static const struct phylink_mac_ops dpaa2_mac_phylink_ops = {
 	.validate = dpaa2_mac_validate,
 	.mac_config = dpaa2_mac_config,
 	.mac_link_up = dpaa2_mac_link_up,
 	.mac_link_down = dpaa2_mac_link_down,
 };

 bool dpaa2_mac_is_type_fixed(struct fsl_mc_device *dpmac_dev,
 			     struct fsl_mc_io *mc_io)
 {
 	struct dpmac_attr attr;
 	bool fixed = false;
 	u16 mc_handle = 0;
 	int err;

 	err = dpmac_open(mc_io, 0, dpmac_dev->obj_desc.id,
 			 &mc_handle);
 	if (err || !mc_handle)
 		return false;

 	err = dpmac_get_attributes(mc_io, 0, mc_handle, &attr);
 	if (err)
 		goto out;

 	if (attr.link_type == DPMAC_LINK_TYPE_FIXED)
 		fixed = true;

 out:
 	dpmac_close(mc_io, 0, mc_handle);

 	return fixed;
 }

 int dpaa2_mac_connect(struct dpaa2_mac *mac)
 {
 	struct fsl_mc_device *dpmac_dev = mac->mc_dev;
 	struct net_device *net_dev = mac->net_dev;
 	struct device_node *dpmac_node;
 	struct phylink *phylink;
 	struct dpmac_attr attr;
 	int err;

 	err = dpmac_open(mac->mc_io, 0, dpmac_dev->obj_desc.id,
 			 &dpmac_dev->mc_handle);
 	if (err || !dpmac_dev->mc_handle) {
 		netdev_err(net_dev, "dpmac_open() = %d\n", err);
 		return -ENODEV;
 	}

 	err = dpmac_get_attributes(mac->mc_io, 0, dpmac_dev->mc_handle, &attr);
 	if (err) {
 		netdev_err(net_dev, "dpmac_get_attributes() = %d\n", err);
 		goto err_close_dpmac;
 	}

 	dpmac_node = dpaa2_mac_get_node(attr.id);
 	if (!dpmac_node) {
 		netdev_err(net_dev, "No dpmac@%d node found.\n", attr.id);
 		err = -ENODEV;
 		goto err_close_dpmac;
 	}

 	err = dpaa2_mac_get_if_mode(dpmac_node, attr);
 	if (err < 0) {
 		err = -EINVAL;
 		goto err_put_node;
 	}
 	mac->if_mode = err;

 	/* The MAC does not have the capability to add RGMII delays so
 	 * error out if the interface mode requests them and there is no PHY
 	 * to act upon them
 	 */
 	if (of_phy_is_fixed_link(dpmac_node) &&
 	    (mac->if_mode == PHY_INTERFACE_MODE_RGMII_ID ||
 	     mac->if_mode == PHY_INTERFACE_MODE_RGMII_RXID ||
 	     mac->if_mode == PHY_INTERFACE_MODE_RGMII_TXID)) {
 		netdev_err(net_dev, "RGMII delay not supported\n");
 		err = -EINVAL;
 		goto err_put_node;
 	}

 	mac->phylink_config.dev = &net_dev->dev;
 	mac->phylink_config.type = PHYLINK_NETDEV;

 	phylink = phylink_create(&mac->phylink_config,
 				 of_fwnode_handle(dpmac_node), mac->if_mode,
 				 &dpaa2_mac_phylink_ops);
 	if (IS_ERR(phylink)) {
 		err = PTR_ERR(phylink);
 		goto err_put_node;
 	}
 	mac->phylink = phylink;

 	err = phylink_of_phy_connect(mac->phylink, dpmac_node, 0);
 	if (err) {
 		netdev_err(net_dev, "phylink_of_phy_connect() = %d\n", err);
 		goto err_phylink_destroy;
 	}

 	of_node_put(dpmac_node);

 	return 0;

 err_phylink_destroy:
 	phylink_destroy(mac->phylink);
 err_put_node:
 	of_node_put(dpmac_node);
 err_close_dpmac:
 	dpmac_close(mac->mc_io, 0, dpmac_dev->mc_handle);
 	return err;
 }

 void dpaa2_mac_disconnect(struct dpaa2_mac *mac)
 {
 	if (!mac->phylink)
 		return;

 	phylink_disconnect_phy(mac->phylink);
 	phylink_destroy(mac->phylink);
 	dpmac_close(mac->mc_io, 0, mac->mc_dev->mc_handle);
 }

 static char dpaa2_mac_ethtool_stats[][ETH_GSTRING_LEN] = {
 	[DPMAC_CNT_ING_ALL_FRAME]		= "[mac] rx all frames",
 	[DPMAC_CNT_ING_GOOD_FRAME]		= "[mac] rx frames ok",
 	[DPMAC_CNT_ING_ERR_FRAME]		= "[mac] rx frame errors",
 	[DPMAC_CNT_ING_FRAME_DISCARD]		= "[mac] rx frame discards",
 	[DPMAC_CNT_ING_UCAST_FRAME]		= "[mac] rx u-cast",
 	[DPMAC_CNT_ING_BCAST_FRAME]		= "[mac] rx b-cast",
 	[DPMAC_CNT_ING_MCAST_FRAME]		= "[mac] rx m-cast",
 	[DPMAC_CNT_ING_FRAME_64]		= "[mac] rx 64 bytes",
 	[DPMAC_CNT_ING_FRAME_127]		= "[mac] rx 65-127 bytes",
 	[DPMAC_CNT_ING_FRAME_255]		= "[mac] rx 128-255 bytes",
 	[DPMAC_CNT_ING_FRAME_511]		= "[mac] rx 256-511 bytes",
 	[DPMAC_CNT_ING_FRAME_1023]		= "[mac] rx 512-1023 bytes",
 	[DPMAC_CNT_ING_FRAME_1518]		= "[mac] rx 1024-1518 bytes",
 	[DPMAC_CNT_ING_FRAME_1519_MAX]		= "[mac] rx 1519-max bytes",
 	[DPMAC_CNT_ING_FRAG]			= "[mac] rx frags",
 	[DPMAC_CNT_ING_JABBER]			= "[mac] rx jabber",
 	[DPMAC_CNT_ING_ALIGN_ERR]		= "[mac] rx align errors",
 	[DPMAC_CNT_ING_OVERSIZED]		= "[mac] rx oversized",
 	[DPMAC_CNT_ING_VALID_PAUSE_FRAME]	= "[mac] rx pause",
 	[DPMAC_CNT_ING_BYTE]			= "[mac] rx bytes",
 	[DPMAC_CNT_EGR_GOOD_FRAME]		= "[mac] tx frames ok",
 	[DPMAC_CNT_EGR_UCAST_FRAME]		= "[mac] tx u-cast",
 	[DPMAC_CNT_EGR_MCAST_FRAME]		= "[mac] tx m-cast",
 	[DPMAC_CNT_EGR_BCAST_FRAME]		= "[mac] tx b-cast",
 	[DPMAC_CNT_EGR_ERR_FRAME]		= "[mac] tx frame errors",
 	[DPMAC_CNT_EGR_UNDERSIZED]		= "[mac] tx undersized",
 	[DPMAC_CNT_EGR_VALID_PAUSE_FRAME]	= "[mac] tx b-pause",
 	[DPMAC_CNT_EGR_BYTE]			= "[mac] tx bytes",
 };

 #define DPAA2_MAC_NUM_STATS	ARRAY_SIZE(dpaa2_mac_ethtool_stats)

 int dpaa2_mac_get_sset_count(void)
 {
 	return DPAA2_MAC_NUM_STATS;
 }

 void dpaa2_mac_get_strings(u8 *data)
 {
 	u8 *p = data;
 	int i;

 	for (i = 0; i < DPAA2_MAC_NUM_STATS; i++) {
 		strlcpy(p, dpaa2_mac_ethtool_stats[i], ETH_GSTRING_LEN);
 		p += ETH_GSTRING_LEN;
 	}
 }

 void dpaa2_mac_get_ethtool_stats(struct dpaa2_mac *mac, u64 *data)
 {
 	struct fsl_mc_device *dpmac_dev = mac->mc_dev;
 	int i, err;
 	u64 value;

 	for (i = 0; i < DPAA2_MAC_NUM_STATS; i++) {
 		err = dpmac_get_counter(mac->mc_io, 0, dpmac_dev->mc_handle,
 					i, &value);
 		if (err) {
 			netdev_err_once(mac->net_dev,
 					"dpmac_get_counter error %d\n", err);
 			*(data + i) = U64_MAX;
 			continue;
 		}
 		*(data + i) = value;
 	}
 }
	// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
	/* Copyright 2019 NXP */

	#include "dpaa2-eth.h"
	#include "dpaa2-mac.h"

	#define phylink_to_dpaa2_mac(config) \
	container_of((config), struct dpaa2_mac, phylink_config)

	static int phy_mode(enum dpmac_eth_if eth_if, phy_interface_t *if_mode)
	{
	*if_mode = PHY_INTERFACE_MODE_NA;

	switch (eth_if) {
	case DPMAC_ETH_IF_RGMII:
	*if_mode = PHY_INTERFACE_MODE_RGMII;
	break;
	default:
	return -EINVAL;
	}

	return 0;
	}

	/* Caller must call of_node_put on the returned value */
	static struct device_node *dpaa2_mac_get_node(u16 dpmac_id)
	{
	struct device_node dpmacs, dpmac = NULL;
	u32 id;
	int err;

	dpmacs = of_find_node_by_name(NULL, "dpmacs");
	if (!dpmacs)
	return NULL;

	while ((dpmac = of_get_next_child(dpmacs, dpmac)) != NULL) {
	err = of_property_read_u32(dpmac, "reg", &id);
	if (err)
	continue;
	if (id == dpmac_id)
	break;
	}

	of_node_put(dpmacs);

	return dpmac;
	}

	static int dpaa2_mac_get_if_mode(struct device_node *node,
	struct dpmac_attr attr)
	{
	phy_interface_t if_mode;
	int err;

	err = of_get_phy_mode(node, &if_mode);
	if (!err)
	return if_mode;

	err = phy_mode(attr.eth_if, &if_mode);
	if (!err)
	return if_mode;

	return err;
	}

	static bool dpaa2_mac_phy_mode_mismatch(struct dpaa2_mac *mac,
	phy_interface_t interface)
	{
	switch (interface) {
	case PHY_INTERFACE_MODE_RGMII:
	case PHY_INTERFACE_MODE_RGMII_ID:
	case PHY_INTERFACE_MODE_RGMII_RXID:
	case PHY_INTERFACE_MODE_RGMII_TXID:
	return (interface != mac->if_mode);
	default:
	return true;
	}
	}

	static void dpaa2_mac_validate(struct phylink_config *config,
	unsigned long *supported,
	struct phylink_link_state *state)
	{
	struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
	__ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };

	if (state->interface != PHY_INTERFACE_MODE_NA &&
	dpaa2_mac_phy_mode_mismatch(mac, state->interface)) {
	goto empty_set;
	}

	phylink_set_port_modes(mask);
	phylink_set(mask, Autoneg);
	phylink_set(mask, Pause);
	phylink_set(mask, Asym_Pause);

	switch (state->interface) {
	case PHY_INTERFACE_MODE_RGMII:
	case PHY_INTERFACE_MODE_RGMII_ID:
	case PHY_INTERFACE_MODE_RGMII_RXID:
	case PHY_INTERFACE_MODE_RGMII_TXID:
	phylink_set(mask, 10baseT_Full);
	phylink_set(mask, 100baseT_Full);
	phylink_set(mask, 1000baseT_Full);
	break;
	default:
	goto empty_set;
	}

	linkmode_and(supported, supported, mask);
	linkmode_and(state->advertising, state->advertising, mask);

	return;

	empty_set:
	linkmode_zero(supported);
	}

	static void dpaa2_mac_config(struct phylink_config *config, unsigned int mode,
	const struct phylink_link_state *state)
	{
	struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
	struct dpmac_link_state *dpmac_state = &mac->state;
	int err;

	if (state->speed != SPEED_UNKNOWN)
	dpmac_state->rate = state->speed;

	if (state->duplex != DUPLEX_UNKNOWN) {
	if (!state->duplex)
	dpmac_state->options \|= DPMAC_LINK_OPT_HALF_DUPLEX;
	else
	dpmac_state->options &= ~DPMAC_LINK_OPT_HALF_DUPLEX;
	}

	if (state->an_enabled)
	dpmac_state->options \|= DPMAC_LINK_OPT_AUTONEG;
	else
	dpmac_state->options &= ~DPMAC_LINK_OPT_AUTONEG;

	if (state->pause & MLO_PAUSE_RX)
	dpmac_state->options \|= DPMAC_LINK_OPT_PAUSE;
	else
	dpmac_state->options &= ~DPMAC_LINK_OPT_PAUSE;

	if (!!(state->pause & MLO_PAUSE_RX) ^ !!(state->pause & MLO_PAUSE_TX))
	dpmac_state->options \|= DPMAC_LINK_OPT_ASYM_PAUSE;
	else
	dpmac_state->options &= ~DPMAC_LINK_OPT_ASYM_PAUSE;

	err = dpmac_set_link_state(mac->mc_io, 0,
	mac->mc_dev->mc_handle, dpmac_state);
	if (err)
	netdev_err(mac->net_dev, "dpmac_set_link_state() = %d\n", err);
	}

	static void dpaa2_mac_link_up(struct phylink_config *config, unsigned int mode,
	phy_interface_t interface, struct phy_device *phy)
	{
	struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
	struct dpmac_link_state *dpmac_state = &mac->state;
	int err;

	dpmac_state->up = 1;
	err = dpmac_set_link_state(mac->mc_io, 0,
	mac->mc_dev->mc_handle, dpmac_state);
	if (err)
	netdev_err(mac->net_dev, "dpmac_set_link_state() = %d\n", err);
	}

	static void dpaa2_mac_link_down(struct phylink_config *config,
	unsigned int mode,
	phy_interface_t interface)
	{
	struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
	struct dpmac_link_state *dpmac_state = &mac->state;
	int err;

	dpmac_state->up = 0;
	err = dpmac_set_link_state(mac->mc_io, 0,
	mac->mc_dev->mc_handle, dpmac_state);
	if (err)
	netdev_err(mac->net_dev, "dpmac_set_link_state() = %d\n", err);
	}

	static const struct phylink_mac_ops dpaa2_mac_phylink_ops = {
	.validate = dpaa2_mac_validate,
	.mac_config = dpaa2_mac_config,
	.mac_link_up = dpaa2_mac_link_up,
	.mac_link_down = dpaa2_mac_link_down,
	};

	bool dpaa2_mac_is_type_fixed(struct fsl_mc_device *dpmac_dev,
	struct fsl_mc_io *mc_io)
	{
	struct dpmac_attr attr;
	bool fixed = false;
	u16 mc_handle = 0;
	int err;

	err = dpmac_open(mc_io, 0, dpmac_dev->obj_desc.id,
	&mc_handle);
	if (err \|\| !mc_handle)
	return false;

	err = dpmac_get_attributes(mc_io, 0, mc_handle, &attr);
	if (err)
	goto out;

	if (attr.link_type == DPMAC_LINK_TYPE_FIXED)
	fixed = true;

	out:
	dpmac_close(mc_io, 0, mc_handle);

	return fixed;
	}

	int dpaa2_mac_connect(struct dpaa2_mac *mac)
	{
	struct fsl_mc_device *dpmac_dev = mac->mc_dev;
	struct net_device *net_dev = mac->net_dev;
	struct device_node *dpmac_node;
	struct phylink *phylink;
	struct dpmac_attr attr;
	int err;

	err = dpmac_open(mac->mc_io, 0, dpmac_dev->obj_desc.id,
	&dpmac_dev->mc_handle);
	if (err \|\| !dpmac_dev->mc_handle) {
	netdev_err(net_dev, "dpmac_open() = %d\n", err);
	return -ENODEV;
	}

	err = dpmac_get_attributes(mac->mc_io, 0, dpmac_dev->mc_handle, &attr);
	if (err) {
	netdev_err(net_dev, "dpmac_get_attributes() = %d\n", err);
	goto err_close_dpmac;
	}

	dpmac_node = dpaa2_mac_get_node(attr.id);
	if (!dpmac_node) {
	netdev_err(net_dev, "No dpmac@%d node found.\n", attr.id);
	err = -ENODEV;
	goto err_close_dpmac;
	}

	err = dpaa2_mac_get_if_mode(dpmac_node, attr);
	if (err < 0) {
	err = -EINVAL;
	goto err_put_node;
	}
	mac->if_mode = err;

	/* The MAC does not have the capability to add RGMII delays so
	* error out if the interface mode requests them and there is no PHY
	* to act upon them
	*/
	if (of_phy_is_fixed_link(dpmac_node) &&
	(mac->if_mode == PHY_INTERFACE_MODE_RGMII_ID \|\|
	mac->if_mode == PHY_INTERFACE_MODE_RGMII_RXID \|\|
	mac->if_mode == PHY_INTERFACE_MODE_RGMII_TXID)) {
	netdev_err(net_dev, "RGMII delay not supported\n");
	err = -EINVAL;
	goto err_put_node;
	}

	mac->phylink_config.dev = &net_dev->dev;
	mac->phylink_config.type = PHYLINK_NETDEV;

	phylink = phylink_create(&mac->phylink_config,
	of_fwnode_handle(dpmac_node), mac->if_mode,
	&dpaa2_mac_phylink_ops);
	if (IS_ERR(phylink)) {
	err = PTR_ERR(phylink);
	goto err_put_node;
	}
	mac->phylink = phylink;

	err = phylink_of_phy_connect(mac->phylink, dpmac_node, 0);
	if (err) {
	netdev_err(net_dev, "phylink_of_phy_connect() = %d\n", err);
	goto err_phylink_destroy;
	}

	of_node_put(dpmac_node);

	return 0;

	err_phylink_destroy:
	phylink_destroy(mac->phylink);
	err_put_node:
	of_node_put(dpmac_node);
	err_close_dpmac:
	dpmac_close(mac->mc_io, 0, dpmac_dev->mc_handle);
	return err;
	}

	void dpaa2_mac_disconnect(struct dpaa2_mac *mac)
	{
	if (!mac->phylink)
	return;

	phylink_disconnect_phy(mac->phylink);
	phylink_destroy(mac->phylink);
	dpmac_close(mac->mc_io, 0, mac->mc_dev->mc_handle);
	}

	static char dpaa2_mac_ethtool_stats[][ETH_GSTRING_LEN] = {
	[DPMAC_CNT_ING_ALL_FRAME] = "[mac] rx all frames",
	[DPMAC_CNT_ING_GOOD_FRAME] = "[mac] rx frames ok",
	[DPMAC_CNT_ING_ERR_FRAME] = "[mac] rx frame errors",
	[DPMAC_CNT_ING_FRAME_DISCARD] = "[mac] rx frame discards",
	[DPMAC_CNT_ING_UCAST_FRAME] = "[mac] rx u-cast",
	[DPMAC_CNT_ING_BCAST_FRAME] = "[mac] rx b-cast",
	[DPMAC_CNT_ING_MCAST_FRAME] = "[mac] rx m-cast",
	[DPMAC_CNT_ING_FRAME_64] = "[mac] rx 64 bytes",
	[DPMAC_CNT_ING_FRAME_127] = "[mac] rx 65-127 bytes",
	[DPMAC_CNT_ING_FRAME_255] = "[mac] rx 128-255 bytes",
	[DPMAC_CNT_ING_FRAME_511] = "[mac] rx 256-511 bytes",
	[DPMAC_CNT_ING_FRAME_1023] = "[mac] rx 512-1023 bytes",
	[DPMAC_CNT_ING_FRAME_1518] = "[mac] rx 1024-1518 bytes",
	[DPMAC_CNT_ING_FRAME_1519_MAX] = "[mac] rx 1519-max bytes",
	[DPMAC_CNT_ING_FRAG] = "[mac] rx frags",
	[DPMAC_CNT_ING_JABBER] = "[mac] rx jabber",
	[DPMAC_CNT_ING_ALIGN_ERR] = "[mac] rx align errors",
	[DPMAC_CNT_ING_OVERSIZED] = "[mac] rx oversized",
	[DPMAC_CNT_ING_VALID_PAUSE_FRAME] = "[mac] rx pause",
	[DPMAC_CNT_ING_BYTE] = "[mac] rx bytes",
	[DPMAC_CNT_EGR_GOOD_FRAME] = "[mac] tx frames ok",
	[DPMAC_CNT_EGR_UCAST_FRAME] = "[mac] tx u-cast",
	[DPMAC_CNT_EGR_MCAST_FRAME] = "[mac] tx m-cast",
	[DPMAC_CNT_EGR_BCAST_FRAME] = "[mac] tx b-cast",
	[DPMAC_CNT_EGR_ERR_FRAME] = "[mac] tx frame errors",
	[DPMAC_CNT_EGR_UNDERSIZED] = "[mac] tx undersized",
	[DPMAC_CNT_EGR_VALID_PAUSE_FRAME] = "[mac] tx b-pause",
	[DPMAC_CNT_EGR_BYTE] = "[mac] tx bytes",
	};

	#define DPAA2_MAC_NUM_STATS ARRAY_SIZE(dpaa2_mac_ethtool_stats)

	int dpaa2_mac_get_sset_count(void)
	{
	return DPAA2_MAC_NUM_STATS;
	}

	void dpaa2_mac_get_strings(u8 *data)
	{
	u8 *p = data;
	int i;

	for (i = 0; i < DPAA2_MAC_NUM_STATS; i++) {
	strlcpy(p, dpaa2_mac_ethtool_stats[i], ETH_GSTRING_LEN);
	p += ETH_GSTRING_LEN;
	}
	}

	void dpaa2_mac_get_ethtool_stats(struct dpaa2_mac mac, u64 data)
	{
	struct fsl_mc_device *dpmac_dev = mac->mc_dev;
	int i, err;
	u64 value;

	for (i = 0; i < DPAA2_MAC_NUM_STATS; i++) {
	err = dpmac_get_counter(mac->mc_io, 0, dpmac_dev->mc_handle,
	i, &value);
	if (err) {
	netdev_err_once(mac->net_dev,
	"dpmac_get_counter error %d\n", err);
	*(data + i) = U64_MAX;
	continue;
	}
	*(data + i) = value;
	}
	}