drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c - SHIFTPHONES/mainline/linux - Gitiles

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

 #include <linux/acpi.h>
 #include <linux/pcs-lynx.h>
 #include <linux/property.h>

 #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;
 	case DPMAC_ETH_IF_USXGMII:
 		*if_mode = PHY_INTERFACE_MODE_USXGMII;
 		break;
 	case DPMAC_ETH_IF_QSGMII:
 		*if_mode = PHY_INTERFACE_MODE_QSGMII;
 		break;
 	case DPMAC_ETH_IF_SGMII:
 		*if_mode = PHY_INTERFACE_MODE_SGMII;
 		break;
 	case DPMAC_ETH_IF_XFI:
 		*if_mode = PHY_INTERFACE_MODE_10GBASER;
 		break;
 	default:
 		return -EINVAL;
 	}

 	return 0;
 }

 static struct fwnode_handle *dpaa2_mac_get_node(struct device *dev,
 						u16 dpmac_id)
 {
 	struct fwnode_handle *fwnode, *parent = NULL, *child  = NULL;
 	struct device_node *dpmacs = NULL;
 	int err;
 	u32 id;

 	fwnode = dev_fwnode(dev->parent);
 	if (is_of_node(fwnode)) {
 		dpmacs = of_find_node_by_name(NULL, "dpmacs");
 		if (!dpmacs)
 			return NULL;
 		parent = of_fwnode_handle(dpmacs);
 	} else if (is_acpi_node(fwnode)) {
 		parent = fwnode;
 	} else {
 		/* The root dprc device didn't yet get to finalize it's probe,
 		 * thus the fwnode field is not yet set. Defer probe if we are
 		 * facing this situation.
 		 */
 		return ERR_PTR(-EPROBE_DEFER);
 	}

 	if (!parent)
 		return NULL;

 	fwnode_for_each_child_node(parent, child) {
 		err = -EINVAL;
 		if (is_acpi_device_node(child))
 			err = acpi_get_local_address(ACPI_HANDLE_FWNODE(child), &id);
 		else if (is_of_node(child))
 			err = of_property_read_u32(to_of_node(child), "reg", &id);
 		if (err)
 			continue;

 		if (id == dpmac_id) {
 			of_node_put(dpmacs);
 			return child;
 		}
 	}
 	of_node_put(dpmacs);
 	return NULL;
 }

 static int dpaa2_mac_get_if_mode(struct fwnode_handle *dpmac_node,
 				 struct dpmac_attr attr)
 {
 	phy_interface_t if_mode;
 	int err;

 	err = fwnode_get_phy_mode(dpmac_node);
 	if (err > 0)
 		return err;

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

 	return err;
 }

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

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

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

 	dpmac_state->up = 1;

 	dpmac_state->rate = speed;

 	if (duplex == DUPLEX_HALF)
 		dpmac_state->options |= DPMAC_LINK_OPT_HALF_DUPLEX;
 	else if (duplex == DUPLEX_FULL)
 		dpmac_state->options &= ~DPMAC_LINK_OPT_HALF_DUPLEX;

 	if (rx_pause)
 		dpmac_state->options |= DPMAC_LINK_OPT_PAUSE;
 	else
 		dpmac_state->options &= ~DPMAC_LINK_OPT_PAUSE;

 	if (rx_pause ^ tx_pause)
 		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, "%s: dpmac_set_link_state() = %d\n",
 			   __func__, 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 = phylink_generic_validate,
 	.mac_config = dpaa2_mac_config,
 	.mac_link_up = dpaa2_mac_link_up,
 	.mac_link_down = dpaa2_mac_link_down,
 };

 static int dpaa2_pcs_create(struct dpaa2_mac *mac,
 			    struct fwnode_handle *dpmac_node,
 			    int id)
 {
 	struct mdio_device *mdiodev;
 	struct fwnode_handle *node;

 	node = fwnode_find_reference(dpmac_node, "pcs-handle", 0);
 	if (IS_ERR(node)) {
 		/* do not error out on old DTS files */
 		netdev_warn(mac->net_dev, "pcs-handle node not found\n");
 		return 0;
 	}

 	if (!fwnode_device_is_available(node)) {
 		netdev_err(mac->net_dev, "pcs-handle node not available\n");
 		fwnode_handle_put(node);
 		return -ENODEV;
 	}

 	mdiodev = fwnode_mdio_find_device(node);
 	fwnode_handle_put(node);
 	if (!mdiodev)
 		return -EPROBE_DEFER;

 	mac->pcs = lynx_pcs_create(mdiodev);
 	if (!mac->pcs) {
 		netdev_err(mac->net_dev, "lynx_pcs_create() failed\n");
 		put_device(&mdiodev->dev);
 		return -ENOMEM;
 	}

 	return 0;
 }

 static void dpaa2_pcs_destroy(struct dpaa2_mac *mac)
 {
 	struct phylink_pcs *phylink_pcs = mac->pcs;

 	if (phylink_pcs) {
 		struct mdio_device *mdio = lynx_get_mdio_device(phylink_pcs);
 		struct device *dev = &mdio->dev;

 		lynx_pcs_destroy(phylink_pcs);
 		put_device(dev);
 		mac->pcs = NULL;
 	}
 }

 int dpaa2_mac_connect(struct dpaa2_mac *mac)
 {
 	struct net_device *net_dev = mac->net_dev;
 	struct fwnode_handle *dpmac_node;
 	struct phylink *phylink;
 	int err;

 	mac->if_link_type = mac->attr.link_type;

 	dpmac_node = mac->fw_node;
 	if (!dpmac_node) {
 		netdev_err(net_dev, "No dpmac@%d node found.\n", mac->attr.id);
 		return -ENODEV;
 	}

 	err = dpaa2_mac_get_if_mode(dpmac_node, mac->attr);
 	if (err < 0)
 		return -EINVAL;
 	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(to_of_node(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");
 		return -EINVAL;
 	}

 	if ((mac->attr.link_type == DPMAC_LINK_TYPE_PHY &&
 	     mac->attr.eth_if != DPMAC_ETH_IF_RGMII) ||
 	    mac->attr.link_type == DPMAC_LINK_TYPE_BACKPLANE) {
 		err = dpaa2_pcs_create(mac, dpmac_node, mac->attr.id);
 		if (err)
 			return err;
 	}

 	memset(&mac->phylink_config, 0, sizeof(mac->phylink_config));
 	mac->phylink_config.dev = &net_dev->dev;
 	mac->phylink_config.type = PHYLINK_NETDEV;

 	mac->phylink_config.mac_capabilities = MAC_SYM_PAUSE | MAC_ASYM_PAUSE |
 		MAC_10FD | MAC_100FD | MAC_1000FD | MAC_2500FD | MAC_5000FD |
 		MAC_10000FD;

 	/* We support the current interface mode, and if we have a PCS
 	 * similar interface modes that do not require the PLLs to be
 	 * reconfigured.
 	 */
 	__set_bit(mac->if_mode, mac->phylink_config.supported_interfaces);
 	if (mac->pcs) {
 		switch (mac->if_mode) {
 		case PHY_INTERFACE_MODE_1000BASEX:
 		case PHY_INTERFACE_MODE_SGMII:
 			__set_bit(PHY_INTERFACE_MODE_1000BASEX,
 				  mac->phylink_config.supported_interfaces);
 			__set_bit(PHY_INTERFACE_MODE_SGMII,
 				  mac->phylink_config.supported_interfaces);
 			break;

 		default:
 			break;
 		}
 	}

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

 	if (mac->pcs)
 		phylink_set_pcs(mac->phylink, mac->pcs);

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

 	return 0;

 err_phylink_destroy:
 	phylink_destroy(mac->phylink);
 err_pcs_destroy:
 	dpaa2_pcs_destroy(mac);

 	return err;
 }

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

 	phylink_disconnect_phy(mac->phylink);
 	phylink_destroy(mac->phylink);
 	dpaa2_pcs_destroy(mac);
 }

 int dpaa2_mac_open(struct dpaa2_mac *mac)
 {
 	struct fsl_mc_device *dpmac_dev = mac->mc_dev;
 	struct net_device *net_dev = mac->net_dev;
 	struct fwnode_handle *fw_node;
 	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,
 				   &mac->attr);
 	if (err) {
 		netdev_err(net_dev, "dpmac_get_attributes() = %d\n", err);
 		goto err_close_dpmac;
 	}

 	/* Find the device node representing the MAC device and link the device
 	 * behind the associated netdev to it.
 	 */
 	fw_node = dpaa2_mac_get_node(&mac->mc_dev->dev, mac->attr.id);
 	if (IS_ERR(fw_node)) {
 		err = PTR_ERR(fw_node);
 		goto err_close_dpmac;
 	}

 	mac->fw_node = fw_node;
 	net_dev->dev.of_node = to_of_node(mac->fw_node);

 	return 0;

 err_close_dpmac:
 	dpmac_close(mac->mc_io, 0, dpmac_dev->mc_handle);
 	return err;
 }

 void dpaa2_mac_close(struct dpaa2_mac *mac)
 {
 	struct fsl_mc_device *dpmac_dev = mac->mc_dev;

 	dpmac_close(mac->mc_io, 0, dpmac_dev->mc_handle);
 	if (mac->fw_node)
 		fwnode_handle_put(mac->fw_node);
 }

 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 <linux/acpi.h>
	#include <linux/pcs-lynx.h>
	#include <linux/property.h>

	#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;
	case DPMAC_ETH_IF_USXGMII:
	*if_mode = PHY_INTERFACE_MODE_USXGMII;
	break;
	case DPMAC_ETH_IF_QSGMII:
	*if_mode = PHY_INTERFACE_MODE_QSGMII;
	break;
	case DPMAC_ETH_IF_SGMII:
	*if_mode = PHY_INTERFACE_MODE_SGMII;
	break;
	case DPMAC_ETH_IF_XFI:
	*if_mode = PHY_INTERFACE_MODE_10GBASER;
	break;
	default:
	return -EINVAL;
	}

	return 0;
	}

	static struct fwnode_handle dpaa2_mac_get_node(struct device dev,
	u16 dpmac_id)
	{
	struct fwnode_handle fwnode, parent = NULL, *child = NULL;
	struct device_node *dpmacs = NULL;
	int err;
	u32 id;

	fwnode = dev_fwnode(dev->parent);
	if (is_of_node(fwnode)) {
	dpmacs = of_find_node_by_name(NULL, "dpmacs");
	if (!dpmacs)
	return NULL;
	parent = of_fwnode_handle(dpmacs);
	} else if (is_acpi_node(fwnode)) {
	parent = fwnode;
	} else {
	/* The root dprc device didn't yet get to finalize it's probe,
	* thus the fwnode field is not yet set. Defer probe if we are
	* facing this situation.
	*/
	return ERR_PTR(-EPROBE_DEFER);
	}

	if (!parent)
	return NULL;

	fwnode_for_each_child_node(parent, child) {
	err = -EINVAL;
	if (is_acpi_device_node(child))
	err = acpi_get_local_address(ACPI_HANDLE_FWNODE(child), &id);
	else if (is_of_node(child))
	err = of_property_read_u32(to_of_node(child), "reg", &id);
	if (err)
	continue;

	if (id == dpmac_id) {
	of_node_put(dpmacs);
	return child;
	}
	}
	of_node_put(dpmacs);
	return NULL;
	}

	static int dpaa2_mac_get_if_mode(struct fwnode_handle *dpmac_node,
	struct dpmac_attr attr)
	{
	phy_interface_t if_mode;
	int err;

	err = fwnode_get_phy_mode(dpmac_node);
	if (err > 0)
	return err;

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

	return err;
	}

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

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

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

	dpmac_state->up = 1;

	dpmac_state->rate = speed;

	if (duplex == DUPLEX_HALF)
	dpmac_state->options \|= DPMAC_LINK_OPT_HALF_DUPLEX;
	else if (duplex == DUPLEX_FULL)
	dpmac_state->options &= ~DPMAC_LINK_OPT_HALF_DUPLEX;

	if (rx_pause)
	dpmac_state->options \|= DPMAC_LINK_OPT_PAUSE;
	else
	dpmac_state->options &= ~DPMAC_LINK_OPT_PAUSE;

	if (rx_pause ^ tx_pause)
	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, "%s: dpmac_set_link_state() = %d\n",
	__func__, 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 = phylink_generic_validate,
	.mac_config = dpaa2_mac_config,
	.mac_link_up = dpaa2_mac_link_up,
	.mac_link_down = dpaa2_mac_link_down,
	};

	static int dpaa2_pcs_create(struct dpaa2_mac *mac,
	struct fwnode_handle *dpmac_node,
	int id)
	{
	struct mdio_device *mdiodev;
	struct fwnode_handle *node;

	node = fwnode_find_reference(dpmac_node, "pcs-handle", 0);
	if (IS_ERR(node)) {
	/* do not error out on old DTS files */
	netdev_warn(mac->net_dev, "pcs-handle node not found\n");
	return 0;
	}

	if (!fwnode_device_is_available(node)) {
	netdev_err(mac->net_dev, "pcs-handle node not available\n");
	fwnode_handle_put(node);
	return -ENODEV;
	}

	mdiodev = fwnode_mdio_find_device(node);
	fwnode_handle_put(node);
	if (!mdiodev)
	return -EPROBE_DEFER;

	mac->pcs = lynx_pcs_create(mdiodev);
	if (!mac->pcs) {
	netdev_err(mac->net_dev, "lynx_pcs_create() failed\n");
	put_device(&mdiodev->dev);
	return -ENOMEM;
	}

	return 0;
	}

	static void dpaa2_pcs_destroy(struct dpaa2_mac *mac)
	{
	struct phylink_pcs *phylink_pcs = mac->pcs;

	if (phylink_pcs) {
	struct mdio_device *mdio = lynx_get_mdio_device(phylink_pcs);
	struct device *dev = &mdio->dev;

	lynx_pcs_destroy(phylink_pcs);
	put_device(dev);
	mac->pcs = NULL;
	}
	}

	int dpaa2_mac_connect(struct dpaa2_mac *mac)
	{
	struct net_device *net_dev = mac->net_dev;
	struct fwnode_handle *dpmac_node;
	struct phylink *phylink;
	int err;

	mac->if_link_type = mac->attr.link_type;

	dpmac_node = mac->fw_node;
	if (!dpmac_node) {
	netdev_err(net_dev, "No dpmac@%d node found.\n", mac->attr.id);
	return -ENODEV;
	}

	err = dpaa2_mac_get_if_mode(dpmac_node, mac->attr);
	if (err < 0)
	return -EINVAL;
	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(to_of_node(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");
	return -EINVAL;
	}

	if ((mac->attr.link_type == DPMAC_LINK_TYPE_PHY &&
	mac->attr.eth_if != DPMAC_ETH_IF_RGMII) \|\|
	mac->attr.link_type == DPMAC_LINK_TYPE_BACKPLANE) {
	err = dpaa2_pcs_create(mac, dpmac_node, mac->attr.id);
	if (err)
	return err;
	}

	memset(&mac->phylink_config, 0, sizeof(mac->phylink_config));
	mac->phylink_config.dev = &net_dev->dev;
	mac->phylink_config.type = PHYLINK_NETDEV;

	mac->phylink_config.mac_capabilities = MAC_SYM_PAUSE \| MAC_ASYM_PAUSE \|
	MAC_10FD \| MAC_100FD \| MAC_1000FD \| MAC_2500FD \| MAC_5000FD \|
	MAC_10000FD;

	/* We support the current interface mode, and if we have a PCS
	* similar interface modes that do not require the PLLs to be
	* reconfigured.
	*/
	__set_bit(mac->if_mode, mac->phylink_config.supported_interfaces);
	if (mac->pcs) {
	switch (mac->if_mode) {
	case PHY_INTERFACE_MODE_1000BASEX:
	case PHY_INTERFACE_MODE_SGMII:
	__set_bit(PHY_INTERFACE_MODE_1000BASEX,
	mac->phylink_config.supported_interfaces);
	__set_bit(PHY_INTERFACE_MODE_SGMII,
	mac->phylink_config.supported_interfaces);
	break;

	default:
	break;
	}
	}

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

	if (mac->pcs)
	phylink_set_pcs(mac->phylink, mac->pcs);

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

	return 0;

	err_phylink_destroy:
	phylink_destroy(mac->phylink);
	err_pcs_destroy:
	dpaa2_pcs_destroy(mac);

	return err;
	}

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

	phylink_disconnect_phy(mac->phylink);
	phylink_destroy(mac->phylink);
	dpaa2_pcs_destroy(mac);
	}

	int dpaa2_mac_open(struct dpaa2_mac *mac)
	{
	struct fsl_mc_device *dpmac_dev = mac->mc_dev;
	struct net_device *net_dev = mac->net_dev;
	struct fwnode_handle *fw_node;
	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,
	&mac->attr);
	if (err) {
	netdev_err(net_dev, "dpmac_get_attributes() = %d\n", err);
	goto err_close_dpmac;
	}

	/* Find the device node representing the MAC device and link the device
	* behind the associated netdev to it.
	*/
	fw_node = dpaa2_mac_get_node(&mac->mc_dev->dev, mac->attr.id);
	if (IS_ERR(fw_node)) {
	err = PTR_ERR(fw_node);
	goto err_close_dpmac;
	}

	mac->fw_node = fw_node;
	net_dev->dev.of_node = to_of_node(mac->fw_node);

	return 0;

	err_close_dpmac:
	dpmac_close(mac->mc_io, 0, dpmac_dev->mc_handle);
	return err;
	}

	void dpaa2_mac_close(struct dpaa2_mac *mac)
	{
	struct fsl_mc_device *dpmac_dev = mac->mc_dev;

	dpmac_close(mac->mc_io, 0, dpmac_dev->mc_handle);
	if (mac->fw_node)
	fwnode_handle_put(mac->fw_node);
	}

	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;
	}
	}