drivers/net/vsc9953.c

/*
 *  Copyright 2014 Freescale Semiconductor, Inc.
 *
 *  SPDX-License-Identifier:      GPL-2.0+
 *
 *  Driver for the Vitesse VSC9953 L2 Switch
 */

#include <asm/io.h>
#include <asm/fsl_serdes.h>
#include <fm_eth.h>
#include <fsl_memac.h>
#include <bitfield.h>
#include <errno.h>
#include <malloc.h>
#include <vsc9953.h>
#include <ethsw.h>

static struct vsc9953_info vsc9953_l2sw = {
		.port[0] = VSC9953_PORT_INFO_INITIALIZER(0),
		.port[1] = VSC9953_PORT_INFO_INITIALIZER(1),
		.port[2] = VSC9953_PORT_INFO_INITIALIZER(2),
		.port[3] = VSC9953_PORT_INFO_INITIALIZER(3),
		.port[4] = VSC9953_PORT_INFO_INITIALIZER(4),
		.port[5] = VSC9953_PORT_INFO_INITIALIZER(5),
		.port[6] = VSC9953_PORT_INFO_INITIALIZER(6),
		.port[7] = VSC9953_PORT_INFO_INITIALIZER(7),
		.port[8] = VSC9953_PORT_INFO_INITIALIZER(8),
		.port[9] = VSC9953_PORT_INFO_INITIALIZER(9),
};

void vsc9953_port_info_set_mdio(int port_no, struct mii_dev *bus)
{
	if (!VSC9953_PORT_CHECK(port_no))
		return;

	vsc9953_l2sw.port[port_no].bus = bus;
}

void vsc9953_port_info_set_phy_address(int port_no, int address)
{
	if (!VSC9953_PORT_CHECK(port_no))
		return;

	vsc9953_l2sw.port[port_no].phyaddr = address;
}

void vsc9953_port_info_set_phy_int(int port_no, phy_interface_t phy_int)
{
	if (!VSC9953_PORT_CHECK(port_no))
		return;

	vsc9953_l2sw.port[port_no].enet_if = phy_int;
}

void vsc9953_port_enable(int port_no)
{
	if (!VSC9953_PORT_CHECK(port_no))
		return;

	vsc9953_l2sw.port[port_no].enabled = 1;
}

void vsc9953_port_disable(int port_no)
{
	if (!VSC9953_PORT_CHECK(port_no))
		return;

	vsc9953_l2sw.port[port_no].enabled = 0;
}

static void vsc9953_mdio_write(struct vsc9953_mii_mng *phyregs, int port_addr,
		int regnum, int value)
{
	int timeout = 50000;

	out_le32(&phyregs->miimcmd, (0x1 << 31) | ((port_addr & 0x1f) << 25) |
			((regnum & 0x1f) << 20) | ((value & 0xffff) << 4) |
			(0x1 << 1));
	asm("sync");

	while ((in_le32(&phyregs->miimstatus) & 0x8) && --timeout)
		udelay(1);

	if (timeout == 0)
		debug("Timeout waiting for MDIO write\n");
}

static int vsc9953_mdio_read(struct vsc9953_mii_mng *phyregs, int port_addr,
		int regnum)
{
	int value = 0xFFFF;
	int timeout = 50000;

	while ((in_le32(&phyregs->miimstatus) & MIIMIND_OPR_PEND) && --timeout)
		udelay(1);
	if (timeout == 0) {
		debug("Timeout waiting for MDIO operation to finish\n");
		return value;
	}

	/* Put the address of the phy, and the register
	 * number into MIICMD
	 */
	out_le32(&phyregs->miimcmd, (0x1 << 31) | ((port_addr & 0x1f) << 25) |
			((regnum & 0x1f) << 20) | ((value & 0xffff) << 4) |
			(0x2 << 1));

	timeout = 50000;
	/* Wait for the the indication that the read is done */
	while ((in_le32(&phyregs->miimstatus) & 0x8) && --timeout)
		udelay(1);
	if (timeout == 0)
		debug("Timeout waiting for MDIO read\n");

	/* Grab the value read from the PHY */
	value = in_le32(&phyregs->miimdata);

	if ((value & 0x00030000) == 0)
		return value & 0x0000ffff;

	return value;
}

static int init_phy(struct eth_device *dev)
{
	struct vsc9953_port_info *l2sw_port = dev->priv;
	struct phy_device *phydev = NULL;

#ifdef CONFIG_PHYLIB
	if (!l2sw_port->bus)
		return 0;
	phydev = phy_connect(l2sw_port->bus, l2sw_port->phyaddr, dev,
			l2sw_port->enet_if);
	if (!phydev) {
		printf("Failed to connect\n");
		return -1;
	}

	phydev->supported &= SUPPORTED_10baseT_Half |
			SUPPORTED_10baseT_Full |
			SUPPORTED_100baseT_Half |
			SUPPORTED_100baseT_Full |
			SUPPORTED_1000baseT_Full;
	phydev->advertising = phydev->supported;

	l2sw_port->phydev = phydev;

	phy_config(phydev);
#endif

	return 0;
}

static int vsc9953_port_init(int port_no)
{
	struct eth_device *dev;

	/* Internal ports never have a PHY */
	if (VSC9953_INTERNAL_PORT_CHECK(port_no))
		return 0;

	/* alloc eth device */
	dev = (struct eth_device *)calloc(1, sizeof(struct eth_device));
	if (!dev)
		return -ENOMEM;

	sprintf(dev->name, "SW@PORT%d", port_no);
	dev->priv = &vsc9953_l2sw.port[port_no];
	dev->init = NULL;
	dev->halt = NULL;
	dev->send = NULL;
	dev->recv = NULL;

	if (init_phy(dev)) {
		free(dev);
		return -ENODEV;
	}

	return 0;
}

static int vsc9953_vlan_table_poll_idle(void)
{
	struct vsc9953_analyzer *l2ana_reg;
	int timeout;

	l2ana_reg = (struct vsc9953_analyzer *)(VSC9953_OFFSET +
			VSC9953_ANA_OFFSET);

	timeout = 50000;
	while (((in_le32(&l2ana_reg->ana_tables.vlan_access) &
		 VSC9953_VLAN_CMD_MASK) != VSC9953_VLAN_CMD_IDLE) && --timeout)
		udelay(1);

	return timeout ? 0 : -EBUSY;
}

/* vlan table set/clear all membership of vid */
static void vsc9953_vlan_table_membership_all_set(int vid, int set_member)
{
	uint val;
	struct vsc9953_analyzer *l2ana_reg;

	l2ana_reg = (struct vsc9953_analyzer *)(VSC9953_OFFSET +
			VSC9953_ANA_OFFSET);

	if (vsc9953_vlan_table_poll_idle() < 0) {
		debug("VLAN table timeout\n");
		return;
	}

	/* read current vlan configuration */
	val = in_le32(&l2ana_reg->ana_tables.vlan_tidx);
	out_le32(&l2ana_reg->ana_tables.vlan_tidx,
		 bitfield_replace_by_mask(val, VSC9953_ANA_TBL_VID_MASK, vid));

	clrsetbits_le32(&l2ana_reg->ana_tables.vlan_access,
			VSC9953_VLAN_CMD_MASK, VSC9953_VLAN_CMD_READ);

	if (vsc9953_vlan_table_poll_idle() < 0) {
		debug("VLAN table timeout\n");
		return;
	}

	val = in_le32(&l2ana_reg->ana_tables.vlan_tidx);
	out_le32(&l2ana_reg->ana_tables.vlan_tidx,
		 bitfield_replace_by_mask(val, VSC9953_ANA_TBL_VID_MASK, vid));

	clrsetbits_le32(&l2ana_reg->ana_tables.vlan_access,
			VSC9953_VLAN_PORT_MASK | VSC9953_VLAN_CMD_MASK,
			VSC9953_VLAN_CMD_WRITE |
			(set_member ? VSC9953_VLAN_PORT_MASK : 0));
}

/* Set PVID for a VSC9953 port */
static void vsc9953_port_vlan_pvid_set(int port_no, int pvid)
{
	uint val;
	struct vsc9953_analyzer *l2ana_reg;
	struct vsc9953_rew_reg *l2rew_reg;

	/* Administrative down */
	if (!vsc9953_l2sw.port[port_no].enabled) {
		printf("Port %d is administrative down\n", port_no);
		return;
	}

	l2ana_reg = (struct vsc9953_analyzer *)(VSC9953_OFFSET +
			VSC9953_ANA_OFFSET);
	l2rew_reg = (struct vsc9953_rew_reg *)(VSC9953_OFFSET +
			VSC9953_REW_OFFSET);

	/* Set PVID on ingress */
	val = in_le32(&l2ana_reg->port[port_no].vlan_cfg);
	val = bitfield_replace_by_mask(val, VSC9953_VLAN_CFG_VID_MASK, pvid);
	out_le32(&l2ana_reg->port[port_no].vlan_cfg, val);

	/* Set PVID on egress */
	val = in_le32(&l2rew_reg->port[port_no].port_vlan_cfg);
	val = bitfield_replace_by_mask(val, VSC9953_PORT_VLAN_CFG_VID_MASK,
				       pvid);
	out_le32(&l2rew_reg->port[port_no].port_vlan_cfg, val);
}

static void vsc9953_port_all_vlan_pvid_set(int pvid)
{
	int i;

	for (i = 0; i < VSC9953_MAX_PORTS; i++)
		vsc9953_port_vlan_pvid_set(i, pvid);
}

/* Enable/disable vlan aware of a VSC9953 port */
static void vsc9953_port_vlan_aware_set(int port_no, int enabled)
{
	struct vsc9953_analyzer *l2ana_reg;

	/* Administrative down */
	if (!vsc9953_l2sw.port[port_no].enabled) {
		printf("Port %d is administrative down\n", port_no);
		return;
	}

	l2ana_reg = (struct vsc9953_analyzer *)(VSC9953_OFFSET +
			VSC9953_ANA_OFFSET);

	if (enabled)
		setbits_le32(&l2ana_reg->port[port_no].vlan_cfg,
			     VSC9953_VLAN_CFG_AWARE_ENA);
	else
		clrbits_le32(&l2ana_reg->port[port_no].vlan_cfg,
			     VSC9953_VLAN_CFG_AWARE_ENA);
}

/* Set all VSC9953 ports' vlan aware  */
static void vsc9953_port_all_vlan_aware_set(int enabled)
{
	int i;

	for (i = 0; i < VSC9953_MAX_PORTS; i++)
		vsc9953_port_vlan_aware_set(i, enabled);
}

/* Enable/disable vlan pop count of a VSC9953 port */
static void vsc9953_port_vlan_popcnt_set(int port_no, int popcnt)
{
	uint val;
	struct vsc9953_analyzer *l2ana_reg;

	/* Administrative down */
	if (!vsc9953_l2sw.port[port_no].enabled) {
		printf("Port %d is administrative down\n", port_no);
		return;
	}

	if (popcnt > 3 || popcnt < 0) {
		printf("Invalid pop count value: %d\n", port_no);
		return;
	}

	l2ana_reg = (struct vsc9953_analyzer *)(VSC9953_OFFSET +
			VSC9953_ANA_OFFSET);

	val = in_le32(&l2ana_reg->port[port_no].vlan_cfg);
	val = bitfield_replace_by_mask(val, VSC9953_VLAN_CFG_POP_CNT_MASK,
				       popcnt);
	out_le32(&l2ana_reg->port[port_no].vlan_cfg, val);
}

/* Set all VSC9953 ports' pop count  */
static void vsc9953_port_all_vlan_poncnt_set(int popcnt)
{
	int i;

	for (i = 0; i < VSC9953_MAX_PORTS; i++)
		vsc9953_port_vlan_popcnt_set(i, popcnt);
}

/* Enable/disable learning for frames dropped due to ingress filtering */
static void vsc9953_vlan_ingr_fltr_learn_drop(int enable)
{
	struct vsc9953_analyzer *l2ana_reg;

	l2ana_reg = (struct vsc9953_analyzer *)(VSC9953_OFFSET +
			VSC9953_ANA_OFFSET);

	if (enable)
		setbits_le32(&l2ana_reg->ana.adv_learn, VSC9953_VLAN_CHK);
	else
		clrbits_le32(&l2ana_reg->ana.adv_learn, VSC9953_VLAN_CHK);
}

/* Egress untag modes of a VSC9953 port */
enum egress_untag_mode {
	EGRESS_UNTAG_ALL = 0,
	EGRESS_UNTAG_PVID_AND_ZERO,
	EGRESS_UNTAG_ZERO,
	EGRESS_UNTAG_NONE,
};

static void vsc9953_port_vlan_egr_untag_set(int port_no,
					    enum egress_untag_mode mode)
{
	struct vsc9953_rew_reg *l2rew_reg;

	/* Administrative down */
	if (!vsc9953_l2sw.port[port_no].enabled) {
		printf("Port %d is administrative down\n", port_no);
		return;
	}

	l2rew_reg = (struct vsc9953_rew_reg *)(VSC9953_OFFSET +
			VSC9953_REW_OFFSET);

	switch (mode) {
	case EGRESS_UNTAG_ALL:
		clrsetbits_le32(&l2rew_reg->port[port_no].port_tag_cfg,
				VSC9953_TAG_CFG_MASK, VSC9953_TAG_CFG_NONE);
		break;
	case EGRESS_UNTAG_PVID_AND_ZERO:
		clrsetbits_le32(&l2rew_reg->port[port_no].port_tag_cfg,
				VSC9953_TAG_CFG_MASK,
				VSC9953_TAG_CFG_ALL_BUT_PVID_ZERO);
		break;
	case EGRESS_UNTAG_ZERO:
		clrsetbits_le32(&l2rew_reg->port[port_no].port_tag_cfg,
				VSC9953_TAG_CFG_MASK,
				VSC9953_TAG_CFG_ALL_BUT_ZERO);
		break;
	case EGRESS_UNTAG_NONE:
		clrsetbits_le32(&l2rew_reg->port[port_no].port_tag_cfg,
				VSC9953_TAG_CFG_MASK, VSC9953_TAG_CFG_ALL);
		break;
	default:
		printf("Unknown untag mode for port %d\n", port_no);
	}
}

static void vsc9953_port_all_vlan_egress_untagged_set(
		enum egress_untag_mode mode)
{
	int i;

	for (i = 0; i < VSC9953_MAX_PORTS; i++)
		vsc9953_port_vlan_egr_untag_set(i, mode);
}

#ifdef CONFIG_CMD_ETHSW

/* Enable/disable status of a VSC9953 port */
static void vsc9953_port_status_set(int port_no, u8 enabled)
{
	struct vsc9953_qsys_reg *l2qsys_reg;

	/* Administrative down */
	if (!vsc9953_l2sw.port[port_no].enabled)
		return;

	l2qsys_reg = (struct vsc9953_qsys_reg *)(VSC9953_OFFSET +
			VSC9953_QSYS_OFFSET);

	if (enabled)
		setbits_le32(&l2qsys_reg->sys.switch_port_mode[port_no],
			     VSC9953_PORT_ENA);
	else
		clrbits_le32(&l2qsys_reg->sys.switch_port_mode[port_no],
			     VSC9953_PORT_ENA);
}

/* Start autonegotiation for a VSC9953 PHY */
static void vsc9953_phy_autoneg(int port_no)
{
	if (!vsc9953_l2sw.port[port_no].phydev)
		return;

	if (vsc9953_l2sw.port[port_no].phydev->drv->startup(
			vsc9953_l2sw.port[port_no].phydev))
		printf("Failed to start PHY for port %d\n", port_no);
}

/* Print a VSC9953 port's configuration */
static void vsc9953_port_config_show(int port_no)
{
	int speed;
	int duplex;
	int link;
	u8 enabled;
	u32 val;
	struct vsc9953_qsys_reg *l2qsys_reg;

	l2qsys_reg = (struct vsc9953_qsys_reg *)(VSC9953_OFFSET +
			VSC9953_QSYS_OFFSET);

	val = in_le32(&l2qsys_reg->sys.switch_port_mode[port_no]);
	enabled = vsc9953_l2sw.port[port_no].enabled &&
		  (val & VSC9953_PORT_ENA);

	/* internal ports (8 and 9) are fixed */
	if (VSC9953_INTERNAL_PORT_CHECK(port_no)) {
		link = 1;
		speed = SPEED_2500;
		duplex = DUPLEX_FULL;
	} else {
		if (vsc9953_l2sw.port[port_no].phydev) {
			link = vsc9953_l2sw.port[port_no].phydev->link;
			speed = vsc9953_l2sw.port[port_no].phydev->speed;
			duplex = vsc9953_l2sw.port[port_no].phydev->duplex;
		} else {
			link = -1;
			speed = -1;
			duplex = -1;
		}
	}

	printf("%8d ", port_no);
	printf("%8s ", enabled == 1 ? "enabled" : "disabled");
	printf("%8s ", link == 1 ? "up" : "down");

	switch (speed) {
	case SPEED_10:
		printf("%8d ", 10);
		break;
	case SPEED_100:
		printf("%8d ", 100);
		break;
	case SPEED_1000:
		printf("%8d ", 1000);
		break;
	case SPEED_2500:
		printf("%8d ", 2500);
		break;
	case SPEED_10000:
		printf("%8d ", 10000);
		break;
	default:
		printf("%8s ", "-");
	}

	printf("%8s\n", duplex == DUPLEX_FULL ? "full" : "half");
}

/* Show VSC9953 ports' statistics */
static void vsc9953_port_statistics_show(int port_no)
{
	u32 rx_val;
	u32 tx_val;
	struct vsc9953_system_reg *l2sys_reg;

	/* Administrative down */
	if (!vsc9953_l2sw.port[port_no].enabled) {
		printf("Port %d is administrative down\n", port_no);
		return;
	}

	l2sys_reg = (struct vsc9953_system_reg *)(VSC9953_OFFSET +
			VSC9953_SYS_OFFSET);

	printf("Statistics for L2 Switch port %d:\n", port_no);

	/* Set counter view for our port */
	out_le32(&l2sys_reg->sys.stat_cfg, port_no);

#define VSC9953_STATS_PRINTF "%-15s %10u"

	/* Get number of Rx and Tx frames */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_short) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_frag) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_jabber) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_long) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_sz_64) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_sz_65_127) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_sz_128_255) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_sz_256_511) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_sz_512_1023) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_sz_1024_1526) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_sz_jumbo);
	tx_val = in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_64) +
		 in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_65_127) +
		 in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_128_255) +
		 in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_256_511) +
		 in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_512_1023) +
		 in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_1024_1526) +
		 in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_jumbo);
	printf(VSC9953_STATS_PRINTF"\t\t"VSC9953_STATS_PRINTF"\n",
	       "Rx frames:", rx_val, "Tx frames:", tx_val);

	/* Get number of Rx and Tx bytes */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_oct);
	tx_val = in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_oct);
	printf(VSC9953_STATS_PRINTF"\t\t"VSC9953_STATS_PRINTF"\n",
	       "Rx bytes:", rx_val, "Tx bytes:", tx_val);

	/* Get number of Rx frames received ok and Tx frames sent ok */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_yellow_prio_0) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_yellow_prio_1) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_yellow_prio_2) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_yellow_prio_3) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_yellow_prio_4) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_yellow_prio_5) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_yellow_prio_6) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_yellow_prio_7) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_green_prio_0) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_green_prio_1) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_green_prio_2) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_green_prio_3) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_green_prio_4) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_green_prio_5) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_green_prio_6) +
		 in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_green_prio_7);
	tx_val = in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_64) +
		 in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_65_127) +
		 in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_128_255) +
		 in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_256_511) +
		 in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_512_1023) +
		 in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_1024_1526) +
		 in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_jumbo);
	printf(VSC9953_STATS_PRINTF"\t\t"VSC9953_STATS_PRINTF"\n",
	       "Rx frames ok:", rx_val, "Tx frames ok:", tx_val);

	/* Get number of Rx and Tx unicast frames */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_uc);
	tx_val = in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_uc);
	printf(VSC9953_STATS_PRINTF"\t\t"VSC9953_STATS_PRINTF"\n",
	       "Rx unicast:", rx_val, "Tx unicast:", tx_val);

	/* Get number of Rx and Tx broadcast frames */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_bc);
	tx_val = in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_bc);
	printf(VSC9953_STATS_PRINTF"\t\t"VSC9953_STATS_PRINTF"\n",
	       "Rx broadcast:", rx_val, "Tx broadcast:", tx_val);

	/* Get number of Rx and Tx frames of 64B */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_sz_64);
	tx_val = in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_64);
	printf(VSC9953_STATS_PRINTF"\t\t"VSC9953_STATS_PRINTF"\n",
	       "Rx 64B:", rx_val, "Tx 64B:", tx_val);

	/* Get number of Rx and Tx frames with sizes between 65B and 127B */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_sz_65_127);
	tx_val = in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_65_127);
	printf(VSC9953_STATS_PRINTF"\t\t"VSC9953_STATS_PRINTF"\n",
	       "Rx 65B-127B:", rx_val, "Tx 65B-127B:", tx_val);

	/* Get number of Rx and Tx frames with sizes between 128B and 255B */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_sz_128_255);
	tx_val = in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_128_255);
	printf(VSC9953_STATS_PRINTF"\t\t"VSC9953_STATS_PRINTF"\n",
	       "Rx 128B-255B:", rx_val, "Tx 128B-255B:", tx_val);

	/* Get number of Rx and Tx frames with sizes between 256B and 511B */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_sz_256_511);
	tx_val = in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_256_511);
	printf(VSC9953_STATS_PRINTF"\t\t"VSC9953_STATS_PRINTF"\n",
	       "Rx 256B-511B:", rx_val, "Tx 256B-511B:", tx_val);

	/* Get number of Rx and Tx frames with sizes between 512B and 1023B */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_sz_512_1023);
	tx_val = in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_512_1023);
	printf(VSC9953_STATS_PRINTF"\t\t"VSC9953_STATS_PRINTF"\n",
	       "Rx 512B-1023B:", rx_val, "Tx 512B-1023B:", tx_val);

	/* Get number of Rx and Tx frames with sizes between 1024B and 1526B */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_sz_1024_1526);
	tx_val = in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_1024_1526);
	printf(VSC9953_STATS_PRINTF"\t\t"VSC9953_STATS_PRINTF"\n",
	       "Rx 1024B-1526B:", rx_val, "Tx 1024B-1526B:", tx_val);

	/* Get number of Rx and Tx jumbo frames */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_sz_jumbo);
	tx_val = in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_sz_jumbo);
	printf(VSC9953_STATS_PRINTF"\t\t"VSC9953_STATS_PRINTF"\n",
	       "Rx jumbo:", rx_val, "Tx jumbo:", tx_val);

	/* Get number of Rx and Tx dropped frames */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_cat_drop) +
		 in_le32(&l2sys_reg->stat.drop_cntrs.c_dr_tail) +
		 in_le32(&l2sys_reg->stat.drop_cntrs.c_dr_yellow_prio_0) +
		 in_le32(&l2sys_reg->stat.drop_cntrs.c_dr_yellow_prio_1) +
		 in_le32(&l2sys_reg->stat.drop_cntrs.c_dr_yellow_prio_2) +
		 in_le32(&l2sys_reg->stat.drop_cntrs.c_dr_yellow_prio_3) +
		 in_le32(&l2sys_reg->stat.drop_cntrs.c_dr_yellow_prio_4) +
		 in_le32(&l2sys_reg->stat.drop_cntrs.c_dr_yellow_prio_5) +
		 in_le32(&l2sys_reg->stat.drop_cntrs.c_dr_yellow_prio_6) +
		 in_le32(&l2sys_reg->stat.drop_cntrs.c_dr_yellow_prio_7) +
		 in_le32(&l2sys_reg->stat.drop_cntrs.c_dr_green_prio_0) +
		 in_le32(&l2sys_reg->stat.drop_cntrs.c_dr_green_prio_1) +
		 in_le32(&l2sys_reg->stat.drop_cntrs.c_dr_green_prio_2) +
		 in_le32(&l2sys_reg->stat.drop_cntrs.c_dr_green_prio_3) +
		 in_le32(&l2sys_reg->stat.drop_cntrs.c_dr_green_prio_4) +
		 in_le32(&l2sys_reg->stat.drop_cntrs.c_dr_green_prio_5) +
		 in_le32(&l2sys_reg->stat.drop_cntrs.c_dr_green_prio_6) +
		 in_le32(&l2sys_reg->stat.drop_cntrs.c_dr_green_prio_7);
	tx_val = in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_drop) +
		 in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_aged);
	printf(VSC9953_STATS_PRINTF"\t\t"VSC9953_STATS_PRINTF"\n",
	       "Rx drops:", rx_val, "Tx drops:", tx_val);

	/*
	 * Get number of Rx frames with CRC or alignment errors
	 * and number of detected Tx collisions
	 */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_crc);
	tx_val = in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_col);
	printf(VSC9953_STATS_PRINTF"\t\t"VSC9953_STATS_PRINTF"\n",
	       "Rx CRC&align:", rx_val, "Tx coll:", tx_val);

	/*
	 * Get number of Rx undersized frames and
	 * number of Tx aged frames
	 */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_short);
	tx_val = in_le32(&l2sys_reg->stat.tx_cntrs.c_tx_aged);
	printf(VSC9953_STATS_PRINTF"\t\t"VSC9953_STATS_PRINTF"\n",
	       "Rx undersize:", rx_val, "Tx aged:", tx_val);

	/* Get number of Rx oversized frames */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_long);
	printf(VSC9953_STATS_PRINTF"\n", "Rx oversized:", rx_val);

	/* Get number of Rx fragmented frames */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_frag);
	printf(VSC9953_STATS_PRINTF"\n", "Rx fragments:", rx_val);

	/* Get number of Rx jabber errors */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_jabber);
	printf(VSC9953_STATS_PRINTF"\n", "Rx jabbers:", rx_val);

	/*
	 * Get number of Rx frames filtered due to classification rules or
	 * no destination ports
	 */
	rx_val = in_le32(&l2sys_reg->stat.rx_cntrs.c_rx_cat_drop) +
		 in_le32(&l2sys_reg->stat.drop_cntrs.c_dr_local);
	printf(VSC9953_STATS_PRINTF"\n", "Rx filtered:", rx_val);

	printf("\n");
}

/* Clear statistics for a VSC9953 port */
static void vsc9953_port_statistics_clear(int port_no)
{
	struct vsc9953_system_reg *l2sys_reg;

	/* Administrative down */
	if (!vsc9953_l2sw.port[port_no].enabled) {
		printf("Port %d is administrative down\n", port_no);
		return;
	}

	l2sys_reg = (struct vsc9953_system_reg *)(VSC9953_OFFSET +
			VSC9953_SYS_OFFSET);

	/* Clear all counter groups for our ports */
	out_le32(&l2sys_reg->sys.stat_cfg, port_no |
		 VSC9953_STAT_CLEAR_RX | VSC9953_STAT_CLEAR_TX |
		 VSC9953_STAT_CLEAR_DR);
}

enum port_learn_mode {
	PORT_LEARN_NONE,
	PORT_LEARN_AUTO
};

/* Set learning configuration for a VSC9953 port */
static void vsc9953_port_learn_mode_set(int port_no, enum port_learn_mode mode)
{
	struct vsc9953_analyzer *l2ana_reg;

	/* Administrative down */
	if (!vsc9953_l2sw.port[port_no].enabled) {
		printf("Port %d is administrative down\n", port_no);
		return;
	}

	l2ana_reg = (struct vsc9953_analyzer *)(VSC9953_OFFSET +
			VSC9953_ANA_OFFSET);

	switch (mode) {
	case PORT_LEARN_NONE:
		clrbits_le32(&l2ana_reg->port[port_no].port_cfg,
			     VSC9953_PORT_CFG_LEARN_DROP |
			     VSC9953_PORT_CFG_LEARN_CPU |
			     VSC9953_PORT_CFG_LEARN_AUTO |
			     VSC9953_PORT_CFG_LEARN_ENA);
		break;
	case PORT_LEARN_AUTO:
		clrsetbits_le32(&l2ana_reg->port[port_no].port_cfg,
				VSC9953_PORT_CFG_LEARN_DROP |
				VSC9953_PORT_CFG_LEARN_CPU,
				VSC9953_PORT_CFG_LEARN_ENA |
				VSC9953_PORT_CFG_LEARN_AUTO);
		break;
	default:
		printf("Unknown learn mode for port %d\n", port_no);
	}
}

/* Get learning configuration for a VSC9953 port */
static int vsc9953_port_learn_mode_get(int port_no, enum port_learn_mode *mode)
{
	u32 val;
	struct vsc9953_analyzer *l2ana_reg;

	/* Administrative down */
	if (!vsc9953_l2sw.port[port_no].enabled) {
		printf("Port %d is administrative down\n", port_no);
		return -1;
	}

	l2ana_reg = (struct vsc9953_analyzer *)(VSC9953_OFFSET +
			VSC9953_ANA_OFFSET);

	/* For now we only support HW learning (auto) and no learning */
	val = in_le32(&l2ana_reg->port[port_no].port_cfg);
	if ((val & (VSC9953_PORT_CFG_LEARN_ENA |
		    VSC9953_PORT_CFG_LEARN_AUTO)) ==
	    (VSC9953_PORT_CFG_LEARN_ENA | VSC9953_PORT_CFG_LEARN_AUTO))
		*mode = PORT_LEARN_AUTO;
	else
		*mode = PORT_LEARN_NONE;

	return 0;
}

static int vsc9953_port_status_key_func(struct ethsw_command_def *parsed_cmd)
{
	int i;
	u8 enabled;

	/* Last keyword should tell us if we should enable/disable the port */
	if (parsed_cmd->cmd_to_keywords[parsed_cmd->cmd_keywords_nr - 1] ==
	    ethsw_id_enable)
		enabled = 1;
	else if (parsed_cmd->cmd_to_keywords[parsed_cmd->cmd_keywords_nr - 1] ==
		 ethsw_id_disable)
		enabled = 0;
	else
		return CMD_RET_USAGE;

	if (parsed_cmd->port != ETHSW_CMD_PORT_ALL) {
		if (!VSC9953_PORT_CHECK(parsed_cmd->port)) {
			printf("Invalid port number: %d\n", parsed_cmd->port);
			return CMD_RET_FAILURE;
		}
		vsc9953_port_status_set(parsed_cmd->port, enabled);
	} else {
		for (i = 0; i < VSC9953_MAX_PORTS; i++)
			vsc9953_port_status_set(i, enabled);
	}

	return CMD_RET_SUCCESS;
}

static int vsc9953_port_config_key_func(struct ethsw_command_def *parsed_cmd)
{
	int i;

	if (parsed_cmd->port != ETHSW_CMD_PORT_ALL) {
		if (!VSC9953_PORT_CHECK(parsed_cmd->port)) {
			printf("Invalid port number: %d\n", parsed_cmd->port);
			return CMD_RET_FAILURE;
		}
		vsc9953_phy_autoneg(parsed_cmd->port);
		printf("%8s %8s %8s %8s %8s\n",
		       "Port", "Status", "Link", "Speed",
		       "Duplex");
		vsc9953_port_config_show(parsed_cmd->port);

	} else {
		for (i = 0; i < VSC9953_MAX_PORTS; i++)
			vsc9953_phy_autoneg(i);
		printf("%8s %8s %8s %8s %8s\n",
		       "Port", "Status", "Link", "Speed", "Duplex");
		for (i = 0; i < VSC9953_MAX_PORTS; i++)
			vsc9953_port_config_show(i);
	}

	return CMD_RET_SUCCESS;
}

static int vsc9953_port_stats_key_func(struct ethsw_command_def *parsed_cmd)
{
	int i;

	if (parsed_cmd->port != ETHSW_CMD_PORT_ALL) {
		if (!VSC9953_PORT_CHECK(parsed_cmd->port)) {
			printf("Invalid port number: %d\n", parsed_cmd->port);
			return CMD_RET_FAILURE;
		}
		vsc9953_port_statistics_show(parsed_cmd->port);
	} else {
		for (i = 0; i < VSC9953_MAX_PORTS; i++)
			vsc9953_port_statistics_show(i);
	}

	return CMD_RET_SUCCESS;
}

static int vsc9953_port_stats_clear_key_func(struct ethsw_command_def
					     *parsed_cmd)
{
	int i;

	if (parsed_cmd->port != ETHSW_CMD_PORT_ALL) {
		if (!VSC9953_PORT_CHECK(parsed_cmd->port)) {
			printf("Invalid port number: %d\n", parsed_cmd->port);
			return CMD_RET_FAILURE;
		}
		vsc9953_port_statistics_clear(parsed_cmd->port);
	} else {
		for (i = 0; i < VSC9953_MAX_PORTS; i++)
			vsc9953_port_statistics_clear(i);
	}

	return CMD_RET_SUCCESS;
}

static int vsc9953_learn_show_key_func(struct ethsw_command_def *parsed_cmd)
{
	int i;
	enum port_learn_mode mode;

	if (parsed_cmd->port != ETHSW_CMD_PORT_ALL) {
		if (!VSC9953_PORT_CHECK(parsed_cmd->port)) {
			printf("Invalid port number: %d\n", parsed_cmd->port);
			return CMD_RET_FAILURE;
		}
		if (vsc9953_port_learn_mode_get(parsed_cmd->port, &mode))
			return CMD_RET_FAILURE;
		printf("%7s %11s\n", "Port", "Learn mode");
		switch (mode) {
		case PORT_LEARN_NONE:
			printf("%7d %11s\n", parsed_cmd->port, "disable");
			break;
		case PORT_LEARN_AUTO:
			printf("%7d %11s\n", parsed_cmd->port, "auto");
			break;
		default:
			printf("%7d %11s\n", parsed_cmd->port, "-");
		}
	} else {
		printf("%7s %11s\n", "Port", "Learn mode");
		for (i = 0; i < VSC9953_MAX_PORTS; i++) {
			if (vsc9953_port_learn_mode_get(i, &mode))
				continue;
			switch (mode) {
			case PORT_LEARN_NONE:
				printf("%7d %11s\n", i, "disable");
				break;
			case PORT_LEARN_AUTO:
				printf("%7d %11s\n", i, "auto");
				break;
			default:
				printf("%7d %11s\n", i, "-");
			}
		}
	}

	return CMD_RET_SUCCESS;
}

static int vsc9953_learn_set_key_func(struct ethsw_command_def *parsed_cmd)
{
	int i;
	enum port_learn_mode mode;

	/* Last keyword should tell us the learn mode */
	if (parsed_cmd->cmd_to_keywords[parsed_cmd->cmd_keywords_nr - 1] ==
	    ethsw_id_auto)
		mode = PORT_LEARN_AUTO;
	else if (parsed_cmd->cmd_to_keywords[parsed_cmd->cmd_keywords_nr - 1] ==
		 ethsw_id_disable)
		mode = PORT_LEARN_NONE;
	else
		return CMD_RET_USAGE;

	if (parsed_cmd->port != ETHSW_CMD_PORT_ALL) {
		if (!VSC9953_PORT_CHECK(parsed_cmd->port)) {
			printf("Invalid port number: %d\n", parsed_cmd->port);
			return CMD_RET_FAILURE;
		}
		vsc9953_port_learn_mode_set(parsed_cmd->port, mode);
	} else {
		for (i = 0; i < VSC9953_MAX_PORTS; i++)
			vsc9953_port_learn_mode_set(i, mode);
	}

	return CMD_RET_SUCCESS;
}

static struct ethsw_command_func vsc9953_cmd_func = {
		.ethsw_name = "L2 Switch VSC9953",
		.port_enable = &vsc9953_port_status_key_func,
		.port_disable = &vsc9953_port_status_key_func,
		.port_show = &vsc9953_port_config_key_func,
		.port_stats = &vsc9953_port_stats_key_func,
		.port_stats_clear = &vsc9953_port_stats_clear_key_func,
		.port_learn = &vsc9953_learn_set_key_func,
		.port_learn_show = &vsc9953_learn_show_key_func,
};

#endif /* CONFIG_CMD_ETHSW */

/*****************************************************************************
At startup, the default configuration would be:
	- HW learning enabled on all ports; (HW default)
	- All ports are in VLAN 1;
	- All ports are VLAN aware;
	- All ports have POP_COUNT 1;
	- All ports have PVID 1;
	- All ports have TPID 0x8100; (HW default)
	- All ports tag frames classified to all VLANs that are not PVID;
*****************************************************************************/
void vsc9953_default_configuration(void)
{
	int i;

	for (i = 0; i < VSC9953_MAX_VLAN; i++)
		vsc9953_vlan_table_membership_all_set(i, 0);
	vsc9953_port_all_vlan_aware_set(1);
	vsc9953_port_all_vlan_pvid_set(1);
	vsc9953_port_all_vlan_poncnt_set(1);
	vsc9953_vlan_table_membership_all_set(1, 1);
	vsc9953_vlan_ingr_fltr_learn_drop(1);
	vsc9953_port_all_vlan_egress_untagged_set(EGRESS_UNTAG_PVID_AND_ZERO);
}

void vsc9953_init(bd_t *bis)
{
	u32 i;
	u32 hdx_cfg = 0;
	u32 phy_addr = 0;
	int timeout;
	struct vsc9953_system_reg *l2sys_reg;
	struct vsc9953_qsys_reg *l2qsys_reg;
	struct vsc9953_dev_gmii *l2dev_gmii_reg;
	struct vsc9953_analyzer *l2ana_reg;
	struct vsc9953_devcpu_gcb *l2dev_gcb;

	l2dev_gmii_reg = (struct vsc9953_dev_gmii *)(VSC9953_OFFSET +
			VSC9953_DEV_GMII_OFFSET);

	l2ana_reg = (struct vsc9953_analyzer *)(VSC9953_OFFSET +
			VSC9953_ANA_OFFSET);

	l2sys_reg = (struct vsc9953_system_reg *)(VSC9953_OFFSET +
			VSC9953_SYS_OFFSET);

	l2qsys_reg = (struct vsc9953_qsys_reg *)(VSC9953_OFFSET +
			VSC9953_QSYS_OFFSET);

	l2dev_gcb = (struct vsc9953_devcpu_gcb *)(VSC9953_OFFSET +
			VSC9953_DEVCPU_GCB);

	out_le32(&l2dev_gcb->chip_regs.soft_rst,
		 VSC9953_SOFT_SWC_RST_ENA);
	timeout = 50000;
	while ((in_le32(&l2dev_gcb->chip_regs.soft_rst) &
			VSC9953_SOFT_SWC_RST_ENA) && --timeout)
		udelay(1); /* busy wait for vsc9953 soft reset */
	if (timeout == 0)
		debug("Timeout waiting for VSC9953 to reset\n");

	out_le32(&l2sys_reg->sys.reset_cfg, VSC9953_MEM_ENABLE |
		 VSC9953_MEM_INIT);

	timeout = 50000;
	while ((in_le32(&l2sys_reg->sys.reset_cfg) &
		VSC9953_MEM_INIT) && --timeout)
		udelay(1); /* busy wait for vsc9953 memory init */
	if (timeout == 0)
		debug("Timeout waiting for VSC9953 memory to initialize\n");

	out_le32(&l2sys_reg->sys.reset_cfg, (in_le32(&l2sys_reg->sys.reset_cfg)
			| VSC9953_CORE_ENABLE));

	/* VSC9953 Setting to be done once only */
	out_le32(&l2qsys_reg->sys.ext_cpu_cfg, 0x00000b00);

	for (i = 0; i < VSC9953_MAX_PORTS; i++) {
		if (vsc9953_port_init(i))
			printf("Failed to initialize l2switch port %d\n", i);

		/* Enable VSC9953 GMII Ports Port ID 0 - 7 */
		if (VSC9953_INTERNAL_PORT_CHECK(i)) {
			out_le32(&l2ana_reg->pfc[i].pfc_cfg,
				 VSC9953_PFC_FC_QSGMII);
			out_le32(&l2sys_reg->pause_cfg.mac_fc_cfg[i],
				 VSC9953_MAC_FC_CFG_QSGMII);
		} else {
			out_le32(&l2ana_reg->pfc[i].pfc_cfg,
				 VSC9953_PFC_FC);
			out_le32(&l2sys_reg->pause_cfg.mac_fc_cfg[i],
				 VSC9953_MAC_FC_CFG);
		}
		out_le32(&l2dev_gmii_reg->port_mode.clock_cfg,
			 VSC9953_CLOCK_CFG);
		out_le32(&l2dev_gmii_reg->mac_cfg_status.mac_ena_cfg,
			 VSC9953_MAC_ENA_CFG);
		out_le32(&l2dev_gmii_reg->mac_cfg_status.mac_mode_cfg,
			 VSC9953_MAC_MODE_CFG);
		out_le32(&l2dev_gmii_reg->mac_cfg_status.mac_ifg_cfg,
			 VSC9953_MAC_IFG_CFG);
		/* mac_hdx_cfg varies with port id*/
		hdx_cfg = VSC9953_MAC_HDX_CFG | (i << 16);
		out_le32(&l2dev_gmii_reg->mac_cfg_status.mac_hdx_cfg, hdx_cfg);
		out_le32(&l2sys_reg->sys.front_port_mode[i],
			 VSC9953_FRONT_PORT_MODE);
		setbits_le32(&l2qsys_reg->sys.switch_port_mode[i],
			     VSC9953_PORT_ENA);
		out_le32(&l2dev_gmii_reg->mac_cfg_status.mac_maxlen_cfg,
			 VSC9953_MAC_MAX_LEN);
		out_le32(&l2sys_reg->pause_cfg.pause_cfg[i],
			 VSC9953_PAUSE_CFG);
		/* WAIT FOR 2 us*/
		udelay(2);

		l2dev_gmii_reg = (struct vsc9953_dev_gmii *)(
				(char *)l2dev_gmii_reg
				+ T1040_SWITCH_GMII_DEV_OFFSET);

		/* Initialize Lynx PHY Wrappers */
		phy_addr = 0;
		if (vsc9953_l2sw.port[i].enet_if ==
				PHY_INTERFACE_MODE_QSGMII)
			phy_addr = (i + 0x4) & 0x1F;
		else if (vsc9953_l2sw.port[i].enet_if ==
				PHY_INTERFACE_MODE_SGMII)
			phy_addr = (i + 1) & 0x1F;

		if (phy_addr) {
			/* SGMII IF mode + AN enable */
			vsc9953_mdio_write(&l2dev_gcb->mii_mng[0], phy_addr,
					   0x14, PHY_SGMII_IF_MODE_AN |
					   PHY_SGMII_IF_MODE_SGMII);
			/* Dev ability according to SGMII specification */
			vsc9953_mdio_write(&l2dev_gcb->mii_mng[0], phy_addr,
					   0x4, PHY_SGMII_DEV_ABILITY_SGMII);
			/* Adjust link timer for SGMII
			 * 1.6 ms in units of 8 ns = 2 * 10^5 = 0x30d40
			 */
			vsc9953_mdio_write(&l2dev_gcb->mii_mng[0], phy_addr,
					   0x13, 0x0003);
			vsc9953_mdio_write(&l2dev_gcb->mii_mng[0], phy_addr,
					   0x12, 0x0d40);
			/* Restart AN */
			vsc9953_mdio_write(&l2dev_gcb->mii_mng[0], phy_addr,
					   0x0, PHY_SGMII_CR_DEF_VAL |
					   PHY_SGMII_CR_RESET_AN);

			timeout = 50000;
			while ((vsc9953_mdio_read(&l2dev_gcb->mii_mng[0],
					phy_addr, 0x01) & 0x0020) && --timeout)
				udelay(1); /* wait for AN to complete */
			if (timeout == 0)
				debug("Timeout waiting for AN to complete\n");
		}
	}

	vsc9953_default_configuration();

#ifdef CONFIG_CMD_ETHSW
	if (ethsw_define_functions(&vsc9953_cmd_func) < 0)
		debug("Unable to use \"ethsw\" commands\n");
#endif

	printf("VSC9953 L2 switch initialized\n");
	return;
}