path: root/arch/mips/mach-octeon/cvmx-helper.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (C) 2020-2022 Marvell International Ltd.
 *
 * Helper functions for common, but complicated tasks.
 */

#include <log.h>
#include <linux/delay.h>

#include <mach/cvmx-regs.h>
#include <mach/cvmx-csr.h>
#include <mach/cvmx-bootmem.h>
#include <mach/octeon-model.h>
#include <mach/cvmx-fuse.h>
#include <mach/octeon-feature.h>
#include <mach/cvmx-qlm.h>
#include <mach/octeon_qlm.h>
#include <mach/cvmx-pcie.h>
#include <mach/cvmx-coremask.h>

#include <mach/cvmx-agl-defs.h>
#include <mach/cvmx-asxx-defs.h>
#include <mach/cvmx-bgxx-defs.h>
#include <mach/cvmx-dbg-defs.h>
#include <mach/cvmx-gmxx-defs.h>
#include <mach/cvmx-gserx-defs.h>
#include <mach/cvmx-ipd-defs.h>
#include <mach/cvmx-l2c-defs.h>
#include <mach/cvmx-npi-defs.h>
#include <mach/cvmx-pcsx-defs.h>
#include <mach/cvmx-pexp-defs.h>
#include <mach/cvmx-pki-defs.h>
#include <mach/cvmx-pko-defs.h>
#include <mach/cvmx-smix-defs.h>
#include <mach/cvmx-sriox-defs.h>
#include <mach/cvmx-helper.h>
#include <mach/cvmx-helper-board.h>
#include <mach/cvmx-helper-fdt.h>
#include <mach/cvmx-helper-bgx.h>
#include <mach/cvmx-helper-cfg.h>
#include <mach/cvmx-helper-ipd.h>
#include <mach/cvmx-helper-util.h>
#include <mach/cvmx-helper-pki.h>
#include <mach/cvmx-helper-pko.h>
#include <mach/cvmx-helper-pko3.h>
#include <mach/cvmx-global-resources.h>
#include <mach/cvmx-pko-internal-ports-range.h>
#include <mach/cvmx-pko3-queue.h>
#include <mach/cvmx-gmx.h>
#include <mach/cvmx-hwpko.h>
#include <mach/cvmx-ilk.h>
#include <mach/cvmx-ipd.h>
#include <mach/cvmx-pip.h>

/**
 * @INTERNAL
 * This structure specifies the interface methods used by an interface.
 *
 * @param mode		Interface mode.
 *
 * @param enumerate	Method the get number of interface ports.
 *
 * @param probe		Method to probe an interface to get the number of
 *			connected ports.
 *
 * @param enable	Method to enable an interface
 *
 * @param link_get	Method to get the state of an interface link.
 *
 * @param link_set	Method to configure an interface link to the specified
 *			state.
 *
 * @param loopback	Method to configure a port in loopback.
 */
struct iface_ops {
	cvmx_helper_interface_mode_t mode;
	int (*enumerate)(int xiface);
	int (*probe)(int xiface);
	int (*enable)(int xiface);
	cvmx_helper_link_info_t (*link_get)(int ipd_port);
	int (*link_set)(int ipd_port, cvmx_helper_link_info_t link_info);
	int (*loopback)(int ipd_port, int en_in, int en_ex);
};

/**
 * @INTERNAL
 * This structure is used by disabled interfaces.
 */
static const struct iface_ops iface_ops_dis = {
	.mode = CVMX_HELPER_INTERFACE_MODE_DISABLED,
};

/**
 * @INTERNAL
 * This structure specifies the interface methods used by interfaces
 * configured as gmii.
 */
static const struct iface_ops iface_ops_gmii = {
	.mode = CVMX_HELPER_INTERFACE_MODE_GMII,
	.enumerate = __cvmx_helper_rgmii_probe,
	.probe = __cvmx_helper_rgmii_probe,
	.enable = __cvmx_helper_rgmii_enable,
	.link_get = __cvmx_helper_gmii_link_get,
	.link_set = __cvmx_helper_rgmii_link_set,
	.loopback = __cvmx_helper_rgmii_configure_loopback,
};

/**
 * @INTERNAL
 * This structure specifies the interface methods used by interfaces
 * configured as rgmii.
 */
static const struct iface_ops iface_ops_rgmii = {
	.mode = CVMX_HELPER_INTERFACE_MODE_RGMII,
	.enumerate = __cvmx_helper_rgmii_probe,
	.probe = __cvmx_helper_rgmii_probe,
	.enable = __cvmx_helper_rgmii_enable,
	.link_get = __cvmx_helper_rgmii_link_get,
	.link_set = __cvmx_helper_rgmii_link_set,
	.loopback = __cvmx_helper_rgmii_configure_loopback,
};

/**
 * @INTERNAL
 * This structure specifies the interface methods used by interfaces
 * configured as sgmii that use the gmx mac.
 */
static const struct iface_ops iface_ops_sgmii = {
	.mode = CVMX_HELPER_INTERFACE_MODE_SGMII,
	.enumerate = __cvmx_helper_sgmii_enumerate,
	.probe = __cvmx_helper_sgmii_probe,
	.enable = __cvmx_helper_sgmii_enable,
	.link_get = __cvmx_helper_sgmii_link_get,
	.link_set = __cvmx_helper_sgmii_link_set,
	.loopback = __cvmx_helper_sgmii_configure_loopback,
};

/**
 * @INTERNAL
 * This structure specifies the interface methods used by interfaces
 * configured as sgmii that use the bgx mac.
 */
static const struct iface_ops iface_ops_bgx_sgmii = {
	.mode = CVMX_HELPER_INTERFACE_MODE_SGMII,
	.enumerate = __cvmx_helper_bgx_enumerate,
	.probe = __cvmx_helper_bgx_probe,
	.enable = __cvmx_helper_bgx_sgmii_enable,
	.link_get = __cvmx_helper_bgx_sgmii_link_get,
	.link_set = __cvmx_helper_bgx_sgmii_link_set,
	.loopback = __cvmx_helper_bgx_sgmii_configure_loopback,
};

/**
 * @INTERNAL
 * This structure specifies the interface methods used by interfaces
 * configured as qsgmii.
 */
static const struct iface_ops iface_ops_qsgmii = {
	.mode = CVMX_HELPER_INTERFACE_MODE_QSGMII,
	.enumerate = __cvmx_helper_sgmii_enumerate,
	.probe = __cvmx_helper_sgmii_probe,
	.enable = __cvmx_helper_sgmii_enable,
	.link_get = __cvmx_helper_sgmii_link_get,
	.link_set = __cvmx_helper_sgmii_link_set,
	.loopback = __cvmx_helper_sgmii_configure_loopback,
};

/**
 * @INTERNAL
 * This structure specifies the interface methods used by interfaces
 * configured as xaui using the gmx mac.
 */
static const struct iface_ops iface_ops_xaui = {
	.mode = CVMX_HELPER_INTERFACE_MODE_XAUI,
	.enumerate = __cvmx_helper_xaui_enumerate,
	.probe = __cvmx_helper_xaui_probe,
	.enable = __cvmx_helper_xaui_enable,
	.link_get = __cvmx_helper_xaui_link_get,
	.link_set = __cvmx_helper_xaui_link_set,
	.loopback = __cvmx_helper_xaui_configure_loopback,
};

/**
 * @INTERNAL
 * This structure specifies the interface methods used by interfaces
 * configured as xaui using the gmx mac.
 */
static const struct iface_ops iface_ops_bgx_xaui = {
	.mode = CVMX_HELPER_INTERFACE_MODE_XAUI,
	.enumerate = __cvmx_helper_bgx_enumerate,
	.probe = __cvmx_helper_bgx_probe,
	.enable = __cvmx_helper_bgx_xaui_enable,
	.link_get = __cvmx_helper_bgx_xaui_link_get,
	.link_set = __cvmx_helper_bgx_xaui_link_set,
	.loopback = __cvmx_helper_bgx_xaui_configure_loopback,
};

/**
 * @INTERNAL
 * This structure specifies the interface methods used by interfaces
 * configured as rxaui.
 */
static const struct iface_ops iface_ops_rxaui = {
	.mode = CVMX_HELPER_INTERFACE_MODE_RXAUI,
	.enumerate = __cvmx_helper_xaui_enumerate,
	.probe = __cvmx_helper_xaui_probe,
	.enable = __cvmx_helper_xaui_enable,
	.link_get = __cvmx_helper_xaui_link_get,
	.link_set = __cvmx_helper_xaui_link_set,
	.loopback = __cvmx_helper_xaui_configure_loopback,
};

/**
 * @INTERNAL
 * This structure specifies the interface methods used by interfaces
 * configured as xaui using the gmx mac.
 */
static const struct iface_ops iface_ops_bgx_rxaui = {
	.mode = CVMX_HELPER_INTERFACE_MODE_RXAUI,
	.enumerate = __cvmx_helper_bgx_enumerate,
	.probe = __cvmx_helper_bgx_probe,
	.enable = __cvmx_helper_bgx_xaui_enable,
	.link_get = __cvmx_helper_bgx_xaui_link_get,
	.link_set = __cvmx_helper_bgx_xaui_link_set,
	.loopback = __cvmx_helper_bgx_xaui_configure_loopback,
};

/**
 * @INTERNAL
 * This structure specifies the interface methods used by interfaces
 * configured as xlaui.
 */
static const struct iface_ops iface_ops_bgx_xlaui = {
	.mode = CVMX_HELPER_INTERFACE_MODE_XLAUI,
	.enumerate = __cvmx_helper_bgx_enumerate,
	.probe = __cvmx_helper_bgx_probe,
	.enable = __cvmx_helper_bgx_xaui_enable,
	.link_get = __cvmx_helper_bgx_xaui_link_get,
	.link_set = __cvmx_helper_bgx_xaui_link_set,
	.loopback = __cvmx_helper_bgx_xaui_configure_loopback,
};

/**
 * @INTERNAL
 * This structure specifies the interface methods used by interfaces
 * configured as xfi.
 */
static const struct iface_ops iface_ops_bgx_xfi = {
	.mode = CVMX_HELPER_INTERFACE_MODE_XFI,
	.enumerate = __cvmx_helper_bgx_enumerate,
	.probe = __cvmx_helper_bgx_probe,
	.enable = __cvmx_helper_bgx_xaui_enable,
	.link_get = __cvmx_helper_bgx_xaui_link_get,
	.link_set = __cvmx_helper_bgx_xaui_link_set,
	.loopback = __cvmx_helper_bgx_xaui_configure_loopback,
};

static const struct iface_ops iface_ops_bgx_10G_KR = {
	.mode = CVMX_HELPER_INTERFACE_MODE_10G_KR,
	.enumerate = __cvmx_helper_bgx_enumerate,
	.probe = __cvmx_helper_bgx_probe,
	.enable = __cvmx_helper_bgx_xaui_enable,
	.link_get = __cvmx_helper_bgx_xaui_link_get,
	.link_set = __cvmx_helper_bgx_xaui_link_set,
	.loopback = __cvmx_helper_bgx_xaui_configure_loopback,
};

static const struct iface_ops iface_ops_bgx_40G_KR4 = {
	.mode = CVMX_HELPER_INTERFACE_MODE_40G_KR4,
	.enumerate = __cvmx_helper_bgx_enumerate,
	.probe = __cvmx_helper_bgx_probe,
	.enable = __cvmx_helper_bgx_xaui_enable,
	.link_get = __cvmx_helper_bgx_xaui_link_get,
	.link_set = __cvmx_helper_bgx_xaui_link_set,
	.loopback = __cvmx_helper_bgx_xaui_configure_loopback,
};

/**
 * @INTERNAL
 * This structure specifies the interface methods used by interfaces
 * configured as ilk.
 */
static const struct iface_ops iface_ops_ilk = {
	.mode = CVMX_HELPER_INTERFACE_MODE_ILK,
	.enumerate = __cvmx_helper_ilk_enumerate,
	.probe = __cvmx_helper_ilk_probe,
	.enable = __cvmx_helper_ilk_enable,
	.link_get = __cvmx_helper_ilk_link_get,
	.link_set = __cvmx_helper_ilk_link_set,
};

/**
 * @INTERNAL
 * This structure specifies the interface methods used by interfaces
 * configured as npi.
 */
static const struct iface_ops iface_ops_npi = {
	.mode = CVMX_HELPER_INTERFACE_MODE_NPI,
	.enumerate = __cvmx_helper_npi_probe,
	.probe = __cvmx_helper_npi_probe,
	.enable = __cvmx_helper_npi_enable,
};

/**
 * @INTERNAL
 * This structure specifies the interface methods used by interfaces
 * configured as agl.
 */
static const struct iface_ops iface_ops_agl = {
	.mode = CVMX_HELPER_INTERFACE_MODE_AGL,
	.enumerate = __cvmx_helper_agl_enumerate,
	.probe = __cvmx_helper_agl_probe,
	.enable = __cvmx_helper_agl_enable,
	.link_get = __cvmx_helper_agl_link_get,
	.link_set = __cvmx_helper_agl_link_set,
};

/**
 * @INTERNAL
 * This structure specifies the interface methods used by interfaces
 * configured as mixed mode, some ports are sgmii and some are xfi.
 */
static const struct iface_ops iface_ops_bgx_mixed = {
	.mode = CVMX_HELPER_INTERFACE_MODE_MIXED,
	.enumerate = __cvmx_helper_bgx_enumerate,
	.probe = __cvmx_helper_bgx_probe,
	.enable = __cvmx_helper_bgx_mixed_enable,
	.link_get = __cvmx_helper_bgx_mixed_link_get,
	.link_set = __cvmx_helper_bgx_mixed_link_set,
	.loopback = __cvmx_helper_bgx_mixed_configure_loopback,
};

/**
 * @INTERNAL
 * This structure specifies the interface methods used by interfaces
 * configured as loop.
 */
static const struct iface_ops iface_ops_loop = {
	.mode = CVMX_HELPER_INTERFACE_MODE_LOOP,
	.enumerate = __cvmx_helper_loop_enumerate,
	.probe = __cvmx_helper_loop_probe,
};

const struct iface_ops *iface_node_ops[CVMX_MAX_NODES][CVMX_HELPER_MAX_IFACE];
#define iface_ops iface_node_ops[0]

struct cvmx_iface {
	int cvif_ipd_nports;
	int cvif_has_fcs; /* PKO fcs for this interface. */
	enum cvmx_pko_padding cvif_padding;
	cvmx_helper_link_info_t *cvif_ipd_port_link_info;
};

/*
 * This has to be static as u-boot expects to probe an interface and
 * gets the number of its ports.
 */
static struct cvmx_iface cvmx_interfaces[CVMX_MAX_NODES][CVMX_HELPER_MAX_IFACE];

int __cvmx_helper_get_num_ipd_ports(int xiface)
{
	struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
	struct cvmx_iface *piface;

	if (xi.interface >= cvmx_helper_get_number_of_interfaces())
		return -1;

	piface = &cvmx_interfaces[xi.node][xi.interface];
	return piface->cvif_ipd_nports;
}

enum cvmx_pko_padding __cvmx_helper_get_pko_padding(int xiface)
{
	struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
	struct cvmx_iface *piface;

	if (xi.interface >= cvmx_helper_get_number_of_interfaces())
		return CVMX_PKO_PADDING_NONE;

	piface = &cvmx_interfaces[xi.node][xi.interface];
	return piface->cvif_padding;
}

int __cvmx_helper_init_interface(int xiface, int num_ipd_ports, int has_fcs,
				 enum cvmx_pko_padding pad)
{
	struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
	struct cvmx_iface *piface;
	cvmx_helper_link_info_t *p;
	int i;
	int sz;
	u64 addr;
	char name[32];

	if (xi.interface >= cvmx_helper_get_number_of_interfaces())
		return -1;

	piface = &cvmx_interfaces[xi.node][xi.interface];
	piface->cvif_ipd_nports = num_ipd_ports;
	piface->cvif_padding = pad;

	piface->cvif_has_fcs = has_fcs;

	/*
	 * allocate the per-ipd_port link_info structure
	 */
	sz = piface->cvif_ipd_nports * sizeof(cvmx_helper_link_info_t);
	snprintf(name, sizeof(name), "__int_%d_link_info", xi.interface);
	addr = CAST64(cvmx_bootmem_alloc_named_range_once(sz, 0, 0,
							  __alignof(cvmx_helper_link_info_t),
							  name, NULL));
	piface->cvif_ipd_port_link_info =
		(cvmx_helper_link_info_t *)__cvmx_phys_addr_to_ptr(addr, sz);
	if (!piface->cvif_ipd_port_link_info) {
		if (sz != 0)
			debug("iface %d failed to alloc link info\n", xi.interface);
		return -1;
	}

	/* Initialize them */
	p = piface->cvif_ipd_port_link_info;

	for (i = 0; i < piface->cvif_ipd_nports; i++) {
		(*p).u64 = 0;
		p++;
	}
	return 0;
}

int __cvmx_helper_set_link_info(int xiface, int index, cvmx_helper_link_info_t link_info)
{
	struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
	struct cvmx_iface *piface;

	if (xi.interface >= cvmx_helper_get_number_of_interfaces())
		return -1;

	piface = &cvmx_interfaces[xi.node][xi.interface];

	if (piface->cvif_ipd_port_link_info) {
		piface->cvif_ipd_port_link_info[index] = link_info;
		return 0;
	}

	return -1;
}

cvmx_helper_link_info_t __cvmx_helper_get_link_info(int xiface, int port)
{
	struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
	struct cvmx_iface *piface;
	cvmx_helper_link_info_t err;

	err.u64 = 0;

	if (xi.interface >= cvmx_helper_get_number_of_interfaces())
		return err;
	piface = &cvmx_interfaces[xi.node][xi.interface];

	if (piface->cvif_ipd_port_link_info)
		return piface->cvif_ipd_port_link_info[port];

	return err;
}

/**
 * Returns if FCS is enabled for the specified interface and port
 *
 * @param xiface - interface to check
 *
 * Return: zero if FCS is not used, otherwise FCS is used.
 */
int __cvmx_helper_get_has_fcs(int xiface)
{
	struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
	return cvmx_interfaces[xi.node][xi.interface].cvif_has_fcs;
}

u64 cvmx_rgmii_backpressure_dis = 1;

typedef int (*cvmx_export_config_t)(void);
cvmx_export_config_t cvmx_export_app_config;

/*
 * internal functions that are not exported in the .h file but must be
 * declared to make gcc happy.
 */
extern cvmx_helper_link_info_t __cvmx_helper_get_link_info(int interface, int port);

/**
 * cvmx_override_ipd_port_setup(int ipd_port) is a function
 * pointer. It is meant to allow customization of the IPD
 * port/port kind setup before packet input/output comes online.
 * It is called after cvmx-helper does the default IPD configuration,
 * but before IPD is enabled. Users should set this pointer to a
 * function before calling any cvmx-helper operations.
 */
void (*cvmx_override_ipd_port_setup)(int ipd_port) = NULL;

/**
 * Return the number of interfaces the chip has. Each interface
 * may have multiple ports. Most chips support two interfaces,
 * but the CNX0XX and CNX1XX are exceptions. These only support
 * one interface.
 *
 * Return: Number of interfaces on chip
 */
int cvmx_helper_get_number_of_interfaces(void)
{
	if (OCTEON_IS_MODEL(OCTEON_CN68XX))
		return 9;
	else if (OCTEON_IS_MODEL(OCTEON_CN66XX))
		if (OCTEON_IS_MODEL(OCTEON_CN66XX_PASS1_0))
			return 7;
		else
			return 8;
	else if (OCTEON_IS_MODEL(OCTEON_CN63XX))
		return 6;
	else if (OCTEON_IS_MODEL(OCTEON_CN61XX) || OCTEON_IS_MODEL(OCTEON_CNF71XX))
		return 4;
	else if (OCTEON_IS_MODEL(OCTEON_CN70XX))
		return 5;
	else if (OCTEON_IS_MODEL(OCTEON_CN78XX))
		return 10;
	else if (OCTEON_IS_MODEL(OCTEON_CNF75XX))
		return 5;
	else if (OCTEON_IS_MODEL(OCTEON_CN73XX))
		return 5;
	else
		return 3;
}

int __cvmx_helper_early_ports_on_interface(int interface)
{
	int ports;

	if (octeon_has_feature(OCTEON_FEATURE_PKND))
		return cvmx_helper_interface_enumerate(interface);

	ports = cvmx_helper_interface_enumerate(interface);
	ports = __cvmx_helper_board_interface_probe(interface, ports);

	return ports;
}

/**
 * Return the number of ports on an interface. Depending on the
 * chip and configuration, this can be 1-16. A value of 0
 * specifies that the interface doesn't exist or isn't usable.
 *
 * @param xiface to get the port count for
 *
 * Return: Number of ports on interface. Can be Zero.
 */
int cvmx_helper_ports_on_interface(int xiface)
{
	if (octeon_has_feature(OCTEON_FEATURE_PKND))
		return cvmx_helper_interface_enumerate(xiface);
	else
		return __cvmx_helper_get_num_ipd_ports(xiface);
}

/**
 * @INTERNAL
 * Return interface mode for CN70XX.
 */
static cvmx_helper_interface_mode_t __cvmx_get_mode_cn70xx(int interface)
{
	/* SGMII/RXAUI/QSGMII */
	if (interface < 2) {
		enum cvmx_qlm_mode qlm_mode =
			cvmx_qlm_get_dlm_mode(0, interface);

		if (qlm_mode == CVMX_QLM_MODE_SGMII)
			iface_ops[interface] = &iface_ops_sgmii;
		else if (qlm_mode == CVMX_QLM_MODE_QSGMII)
			iface_ops[interface] = &iface_ops_qsgmii;
		else if (qlm_mode == CVMX_QLM_MODE_RXAUI)
			iface_ops[interface] = &iface_ops_rxaui;
		else
			iface_ops[interface] = &iface_ops_dis;
	} else if (interface == 2) { /* DPI */
		iface_ops[interface] = &iface_ops_npi;
	} else if (interface == 3) { /* LOOP */
		iface_ops[interface] = &iface_ops_loop;
	} else if (interface == 4) { /* RGMII (AGL) */
		cvmx_agl_prtx_ctl_t prtx_ctl;

		prtx_ctl.u64 = csr_rd(CVMX_AGL_PRTX_CTL(0));
		if (prtx_ctl.s.mode == 0)
			iface_ops[interface] = &iface_ops_agl;
		else
			iface_ops[interface] = &iface_ops_dis;
	} else {
		iface_ops[interface] = &iface_ops_dis;
	}

	return iface_ops[interface]->mode;
}

/**
 * @INTERNAL
 * Return interface mode for CN78XX.
 */
static cvmx_helper_interface_mode_t __cvmx_get_mode_cn78xx(int xiface)
{
	struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
	/* SGMII/RXAUI/XAUI */
	if (xi.interface < 6) {
		int qlm = cvmx_qlm_lmac(xiface, 0);
		enum cvmx_qlm_mode qlm_mode;

		if (qlm == -1) {
			iface_node_ops[xi.node][xi.interface] = &iface_ops_dis;
			return iface_node_ops[xi.node][xi.interface]->mode;
		}
		qlm_mode = cvmx_qlm_get_mode_cn78xx(xi.node, qlm);

		if (qlm_mode == CVMX_QLM_MODE_SGMII)
			iface_node_ops[xi.node][xi.interface] = &iface_ops_bgx_sgmii;
		else if (qlm_mode == CVMX_QLM_MODE_XAUI)
			iface_node_ops[xi.node][xi.interface] = &iface_ops_bgx_xaui;
		else if (qlm_mode == CVMX_QLM_MODE_XLAUI)
			iface_node_ops[xi.node][xi.interface] = &iface_ops_bgx_xlaui;
		else if (qlm_mode == CVMX_QLM_MODE_XFI)
			iface_node_ops[xi.node][xi.interface] = &iface_ops_bgx_xfi;
		else if (qlm_mode == CVMX_QLM_MODE_RXAUI)
			iface_node_ops[xi.node][xi.interface] = &iface_ops_bgx_rxaui;
		else
			iface_node_ops[xi.node][xi.interface] = &iface_ops_dis;
	} else if (xi.interface < 8) {
		enum cvmx_qlm_mode qlm_mode;
		int found = 0;
		int i;
		int intf, lane_mask;

		if (xi.interface == 6) {
			intf = 6;
			lane_mask = cvmx_ilk_lane_mask[xi.node][0];
		} else {
			intf = 7;
			lane_mask = cvmx_ilk_lane_mask[xi.node][1];
		}
		switch (lane_mask) {
		default:
		case 0x0:
			iface_node_ops[xi.node][intf] = &iface_ops_dis;
			break;
		case 0xf:
			qlm_mode = cvmx_qlm_get_mode_cn78xx(xi.node, 4);
			if (qlm_mode == CVMX_QLM_MODE_ILK)
				iface_node_ops[xi.node][intf] = &iface_ops_ilk;
			else
				iface_node_ops[xi.node][intf] = &iface_ops_dis;
			break;
		case 0xff:
			found = 0;
			for (i = 4; i < 6; i++) {
				qlm_mode = cvmx_qlm_get_mode_cn78xx(xi.node, i);
				if (qlm_mode == CVMX_QLM_MODE_ILK)
					found++;
			}
			if (found == 2)
				iface_node_ops[xi.node][intf] = &iface_ops_ilk;
			else
				iface_node_ops[xi.node][intf] = &iface_ops_dis;
			break;
		case 0xfff:
			found = 0;
			for (i = 4; i < 7; i++) {
				qlm_mode = cvmx_qlm_get_mode_cn78xx(xi.node, i);
				if (qlm_mode == CVMX_QLM_MODE_ILK)
					found++;
			}
			if (found == 3)
				iface_node_ops[xi.node][intf] = &iface_ops_ilk;
			else
				iface_node_ops[xi.node][intf] = &iface_ops_dis;
			break;
		case 0xff00:
			found = 0;
			for (i = 6; i < 8; i++) {
				qlm_mode = cvmx_qlm_get_mode_cn78xx(xi.node, i);
				if (qlm_mode == CVMX_QLM_MODE_ILK)
					found++;
			}
			if (found == 2)
				iface_node_ops[xi.node][intf] = &iface_ops_ilk;
			else
				iface_node_ops[xi.node][intf] = &iface_ops_dis;
			break;
		case 0xf0:
			qlm_mode = cvmx_qlm_get_mode_cn78xx(xi.node, 5);
			if (qlm_mode == CVMX_QLM_MODE_ILK)
				iface_node_ops[xi.node][intf] = &iface_ops_ilk;
			else
				iface_node_ops[xi.node][intf] = &iface_ops_dis;
			break;
		case 0xf00:
			qlm_mode = cvmx_qlm_get_mode_cn78xx(xi.node, 6);
			if (qlm_mode == CVMX_QLM_MODE_ILK)
				iface_node_ops[xi.node][intf] = &iface_ops_ilk;
			else
				iface_node_ops[xi.node][intf] = &iface_ops_dis;
			break;
		case 0xf000:
			qlm_mode = cvmx_qlm_get_mode_cn78xx(xi.node, 7);
			if (qlm_mode == CVMX_QLM_MODE_ILK)
				iface_node_ops[xi.node][intf] = &iface_ops_ilk;
			else
				iface_node_ops[xi.node][intf] = &iface_ops_dis;
			break;
		case 0xfff0:
			found = 0;
			for (i = 5; i < 8; i++) {
				qlm_mode = cvmx_qlm_get_mode_cn78xx(xi.node, i);
				if (qlm_mode == CVMX_QLM_MODE_ILK)
					found++;
			}
			if (found == 3)
				iface_node_ops[xi.node][intf] = &iface_ops_ilk;
			else
				iface_node_ops[xi.node][intf] = &iface_ops_dis;
			break;
		}
	} else if (xi.interface == 8) { /* DPI */
		int qlm = 0;

		for (qlm = 0; qlm < 5; qlm++) {
			/* if GSERX_CFG[pcie] == 1, then enable npi */
			if (csr_rd_node(xi.node, CVMX_GSERX_CFG(qlm)) & 0x1) {
				iface_node_ops[xi.node][xi.interface] =
					&iface_ops_npi;
				return iface_node_ops[xi.node][xi.interface]->mode;
			}
		}
		iface_node_ops[xi.node][xi.interface] = &iface_ops_dis;
	} else if (xi.interface == 9) { /* LOOP */
		iface_node_ops[xi.node][xi.interface] = &iface_ops_loop;
	} else {
		iface_node_ops[xi.node][xi.interface] = &iface_ops_dis;
	}

	return iface_node_ops[xi.node][xi.interface]->mode;
}

/**
 * @INTERNAL
 * Return interface mode for CN73XX.
 */
static cvmx_helper_interface_mode_t __cvmx_get_mode_cn73xx(int xiface)
{
	struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
	int interface = xi.interface;

	/* SGMII/XAUI/XLAUI/XFI */
	if (interface < 3) {
		int qlm = cvmx_qlm_lmac(xiface, 0);
		enum cvmx_qlm_mode qlm_mode;

		if (qlm == -1) {
			iface_ops[interface] = &iface_ops_dis;
			return iface_ops[interface]->mode;
		}
		qlm_mode = cvmx_qlm_get_mode(qlm);

		switch (qlm_mode) {
		case CVMX_QLM_MODE_SGMII:
		case CVMX_QLM_MODE_SGMII_2X1:
		case CVMX_QLM_MODE_RGMII_SGMII:
		case CVMX_QLM_MODE_RGMII_SGMII_1X1:
			iface_ops[interface] = &iface_ops_bgx_sgmii;
			break;
		case CVMX_QLM_MODE_XAUI:
		case CVMX_QLM_MODE_RGMII_XAUI:
			iface_ops[interface] = &iface_ops_bgx_xaui;
			break;
		case CVMX_QLM_MODE_RXAUI:
		case CVMX_QLM_MODE_RXAUI_1X2:
		case CVMX_QLM_MODE_RGMII_RXAUI:
			iface_ops[interface] = &iface_ops_bgx_rxaui;
			break;
		case CVMX_QLM_MODE_XLAUI:
		case CVMX_QLM_MODE_RGMII_XLAUI:
			iface_ops[interface] = &iface_ops_bgx_xlaui;
			break;
		case CVMX_QLM_MODE_XFI:
		case CVMX_QLM_MODE_XFI_1X2:
		case CVMX_QLM_MODE_RGMII_XFI:
			iface_ops[interface] = &iface_ops_bgx_xfi;
			break;
		case CVMX_QLM_MODE_10G_KR:
		case CVMX_QLM_MODE_10G_KR_1X2:
		case CVMX_QLM_MODE_RGMII_10G_KR:
			iface_ops[interface] = &iface_ops_bgx_10G_KR;
			break;
		case CVMX_QLM_MODE_40G_KR4:
		case CVMX_QLM_MODE_RGMII_40G_KR4:
			iface_ops[interface] = &iface_ops_bgx_40G_KR4;
			break;
		case CVMX_QLM_MODE_MIXED:
			iface_ops[interface] = &iface_ops_bgx_mixed;
			break;
		default:
			iface_ops[interface] = &iface_ops_dis;
			break;
		}
	} else if (interface == 3) { /* DPI */
		iface_ops[interface] = &iface_ops_npi;
	} else if (interface == 4) { /* LOOP */
		iface_ops[interface] = &iface_ops_loop;
	} else {
		iface_ops[interface] = &iface_ops_dis;
	}

	return iface_ops[interface]->mode;
}

/**
 * @INTERNAL
 * Return interface mode for CNF75XX.
 *
 * CNF75XX has a single BGX block, which is attached to two DLMs,
 * the first, GSER4 only supports SGMII mode, while the second,
 * GSER5 supports 1G/10G single late modes, i.e. SGMII, XFI, 10G-KR.
 * Each half-BGX is thus designated as a separate interface with two ports each.
 */
static cvmx_helper_interface_mode_t __cvmx_get_mode_cnf75xx(int xiface)
{
	struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
	int interface = xi.interface;

	/* BGX0: SGMII (DLM4/DLM5)/XFI(DLM5)  */
	if (interface < 1) {
		enum cvmx_qlm_mode qlm_mode;
		int qlm = cvmx_qlm_lmac(xiface, 0);

		if (qlm == -1) {
			iface_ops[interface] = &iface_ops_dis;
			return iface_ops[interface]->mode;
		}
		qlm_mode = cvmx_qlm_get_mode(qlm);

		switch (qlm_mode) {
		case CVMX_QLM_MODE_SGMII:
		case CVMX_QLM_MODE_SGMII_2X1:
			iface_ops[interface] = &iface_ops_bgx_sgmii;
			break;
		case CVMX_QLM_MODE_XFI_1X2:
			iface_ops[interface] = &iface_ops_bgx_xfi;
			break;
		case CVMX_QLM_MODE_10G_KR_1X2:
			iface_ops[interface] = &iface_ops_bgx_10G_KR;
			break;
		case CVMX_QLM_MODE_MIXED:
			iface_ops[interface] = &iface_ops_bgx_mixed;
			break;
		default:
			iface_ops[interface] = &iface_ops_dis;
			break;
		}
	} else if ((interface < 3) && OCTEON_IS_MODEL(OCTEON_CNF75XX)) {
		/* SRIO is disabled for now */
		printf("SRIO disabled for now!\n");
		iface_ops[interface] = &iface_ops_dis;
	} else if (interface == 3) { /* DPI */
		iface_ops[interface] = &iface_ops_npi;
	} else if (interface == 4) { /* LOOP */
		iface_ops[interface] = &iface_ops_loop;
	} else {
		iface_ops[interface] = &iface_ops_dis;
	}

	return iface_ops[interface]->mode;
}

/**
 * @INTERNAL
 * Return interface mode for CN68xx.
 */
static cvmx_helper_interface_mode_t __cvmx_get_mode_cn68xx(int interface)
{
	union cvmx_mio_qlmx_cfg qlm_cfg;

	switch (interface) {
	case 0:
		qlm_cfg.u64 = csr_rd(CVMX_MIO_QLMX_CFG(0));
		/* QLM is disabled when QLM SPD is 15. */
		if (qlm_cfg.s.qlm_spd == 15)
			iface_ops[interface] = &iface_ops_dis;
		else if (qlm_cfg.s.qlm_cfg == 7)
			iface_ops[interface] = &iface_ops_rxaui;
		else if (qlm_cfg.s.qlm_cfg == 2)
			iface_ops[interface] = &iface_ops_sgmii;
		else if (qlm_cfg.s.qlm_cfg == 3)
			iface_ops[interface] = &iface_ops_xaui;
		else
			iface_ops[interface] = &iface_ops_dis;
		break;

	case 1:
		qlm_cfg.u64 = csr_rd(CVMX_MIO_QLMX_CFG(0));
		/* QLM is disabled when QLM SPD is 15. */
		if (qlm_cfg.s.qlm_spd == 15)
			iface_ops[interface] = &iface_ops_dis;
		else if (qlm_cfg.s.qlm_cfg == 7)
			iface_ops[interface] = &iface_ops_rxaui;
		else
			iface_ops[interface] = &iface_ops_dis;
		break;

	case 2:
	case 3:
	case 4:
		qlm_cfg.u64 = csr_rd(CVMX_MIO_QLMX_CFG(interface));
		/* QLM is disabled when QLM SPD is 15. */
		if (qlm_cfg.s.qlm_spd == 15)
			iface_ops[interface] = &iface_ops_dis;
		else if (qlm_cfg.s.qlm_cfg == 2)
			iface_ops[interface] = &iface_ops_sgmii;
		else if (qlm_cfg.s.qlm_cfg == 3)
			iface_ops[interface] = &iface_ops_xaui;
		else
			iface_ops[interface] = &iface_ops_dis;
		break;

	case 5:
	case 6:
		qlm_cfg.u64 = csr_rd(CVMX_MIO_QLMX_CFG(interface - 4));
		/* QLM is disabled when QLM SPD is 15. */
		if (qlm_cfg.s.qlm_spd == 15)
			iface_ops[interface] = &iface_ops_dis;
		else if (qlm_cfg.s.qlm_cfg == 1)
			iface_ops[interface] = &iface_ops_ilk;
		else
			iface_ops[interface] = &iface_ops_dis;
		break;

	case 7: {
		union cvmx_mio_qlmx_cfg qlm_cfg1;
		/* Check if PCIe0/PCIe1 is configured for PCIe */
		qlm_cfg.u64 = csr_rd(CVMX_MIO_QLMX_CFG(3));
		qlm_cfg1.u64 = csr_rd(CVMX_MIO_QLMX_CFG(1));
		/* QLM is disabled when QLM SPD is 15. */
		if ((qlm_cfg.s.qlm_spd != 15 && qlm_cfg.s.qlm_cfg == 0) ||
		    (qlm_cfg1.s.qlm_spd != 15 && qlm_cfg1.s.qlm_cfg == 0))
			iface_ops[interface] = &iface_ops_npi;
		else
			iface_ops[interface] = &iface_ops_dis;
	} break;

	case 8:
		iface_ops[interface] = &iface_ops_loop;
		break;

	default:
		iface_ops[interface] = &iface_ops_dis;
		break;
	}

	return iface_ops[interface]->mode;
}

/**
 * @INTERNAL
 * Return interface mode for an Octeon II
 */
static cvmx_helper_interface_mode_t __cvmx_get_mode_octeon2(int interface)
{
	union cvmx_gmxx_inf_mode mode;

	if (OCTEON_IS_MODEL(OCTEON_CN68XX))
		return __cvmx_get_mode_cn68xx(interface);

	if (interface == 2) {
		iface_ops[interface] = &iface_ops_npi;
	} else if (interface == 3) {
		iface_ops[interface] = &iface_ops_loop;
	} else if ((OCTEON_IS_MODEL(OCTEON_CN63XX) &&
		    (interface == 4 || interface == 5)) ||
		   (OCTEON_IS_MODEL(OCTEON_CN66XX) && interface >= 4 &&
		    interface <= 7)) {
		/* Only present in CN63XX & CN66XX Octeon model */

		/* cn66xx pass1.0 has only 2 SRIO interfaces. */
		if ((interface == 5 || interface == 7) &&
		    OCTEON_IS_MODEL(OCTEON_CN66XX_PASS1_0)) {
			iface_ops[interface] = &iface_ops_dis;
		} else if (interface == 5 && OCTEON_IS_MODEL(OCTEON_CN66XX)) {
			/*
			 * Later passes of cn66xx support SRIO0 - x4/x2/x1,
			 * SRIO2 - x2/x1, SRIO3 - x1
			 */
			iface_ops[interface] = &iface_ops_dis;
		} else {
			/* SRIO is disabled for now */
			printf("SRIO disabled for now!\n");
			iface_ops[interface] = &iface_ops_dis;
		}
	} else if (OCTEON_IS_MODEL(OCTEON_CN66XX)) {
		union cvmx_mio_qlmx_cfg mio_qlm_cfg;

		/* QLM2 is SGMII0 and QLM1 is SGMII1 */
		if (interface == 0) {
			mio_qlm_cfg.u64 = csr_rd(CVMX_MIO_QLMX_CFG(2));
		} else if (interface == 1) {
			mio_qlm_cfg.u64 = csr_rd(CVMX_MIO_QLMX_CFG(1));
		} else {
			iface_ops[interface] = &iface_ops_dis;
			return iface_ops[interface]->mode;
		}

		if (mio_qlm_cfg.s.qlm_spd == 15)
			iface_ops[interface] = &iface_ops_dis;
		else if (mio_qlm_cfg.s.qlm_cfg == 9)
			iface_ops[interface] = &iface_ops_sgmii;
		else if (mio_qlm_cfg.s.qlm_cfg == 11)
			iface_ops[interface] = &iface_ops_xaui;
		else
			iface_ops[interface] = &iface_ops_dis;
	} else if (OCTEON_IS_MODEL(OCTEON_CN61XX)) {
		union cvmx_mio_qlmx_cfg qlm_cfg;

		if (interface == 0) {
			qlm_cfg.u64 = csr_rd(CVMX_MIO_QLMX_CFG(2));
		} else if (interface == 1) {
			qlm_cfg.u64 = csr_rd(CVMX_MIO_QLMX_CFG(0));
		} else {
			iface_ops[interface] = &iface_ops_dis;
			return iface_ops[interface]->mode;
		}

		if (qlm_cfg.s.qlm_spd == 15)
			iface_ops[interface] = &iface_ops_dis;
		else if (qlm_cfg.s.qlm_cfg == 2)
			iface_ops[interface] = &iface_ops_sgmii;
		else if (qlm_cfg.s.qlm_cfg == 3)
			iface_ops[interface] = &iface_ops_xaui;
		else
			iface_ops[interface] = &iface_ops_dis;
	} else if (OCTEON_IS_MODEL(OCTEON_CNF71XX)) {
		if (interface == 0) {
			union cvmx_mio_qlmx_cfg qlm_cfg;

			qlm_cfg.u64 = csr_rd(CVMX_MIO_QLMX_CFG(0));
			if (qlm_cfg.s.qlm_cfg == 2)
				iface_ops[interface] = &iface_ops_sgmii;
			else
				iface_ops[interface] = &iface_ops_dis;
		} else {
			iface_ops[interface] = &iface_ops_dis;
		}
	} else if (interface == 1 && OCTEON_IS_MODEL(OCTEON_CN63XX)) {
		iface_ops[interface] = &iface_ops_dis;
	} else {
		mode.u64 = csr_rd(CVMX_GMXX_INF_MODE(interface));

		if (OCTEON_IS_MODEL(OCTEON_CN63XX)) {
			switch (mode.cn63xx.mode) {
			case 0:
				iface_ops[interface] = &iface_ops_sgmii;
				break;

			case 1:
				iface_ops[interface] = &iface_ops_xaui;
				break;

			default:
				iface_ops[interface] = &iface_ops_dis;
				break;
			}
		} else {
			if (!mode.s.en)
				iface_ops[interface] = &iface_ops_dis;
			else if (mode.s.type)
				iface_ops[interface] = &iface_ops_gmii;
			else
				iface_ops[interface] = &iface_ops_rgmii;
		}
	}

	return iface_ops[interface]->mode;
}

/**
 * Get the operating mode of an interface. Depending on the Octeon
 * chip and configuration, this function returns an enumeration
 * of the type of packet I/O supported by an interface.
 *
 * @param xiface Interface to probe
 *
 * Return: Mode of the interface. Unknown or unsupported interfaces return
 *         DISABLED.
 */
cvmx_helper_interface_mode_t cvmx_helper_interface_get_mode(int xiface)
{
	struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);

	if (xi.interface < 0 ||
	    xi.interface >= cvmx_helper_get_number_of_interfaces())
		return CVMX_HELPER_INTERFACE_MODE_DISABLED;

	/*
	 * Check if the interface mode has been already cached. If it has,
	 * simply return it. Otherwise, fall through the rest of the code to
	 * determine the interface mode and cache it in iface_ops.
	 */
	if (iface_node_ops[xi.node][xi.interface]) {
		cvmx_helper_interface_mode_t mode;

		mode = iface_node_ops[xi.node][xi.interface]->mode;
		return mode;
	}

	/*
	 * OCTEON III models
	 */
	if (OCTEON_IS_MODEL(OCTEON_CN70XX))
		return __cvmx_get_mode_cn70xx(xi.interface);

	if (OCTEON_IS_MODEL(OCTEON_CN78XX))
		return __cvmx_get_mode_cn78xx(xiface);

	if (OCTEON_IS_MODEL(OCTEON_CNF75XX)) {
		cvmx_helper_interface_mode_t mode;

		mode = __cvmx_get_mode_cnf75xx(xiface);
		return mode;
	}

	if (OCTEON_IS_MODEL(OCTEON_CN73XX)) {
		cvmx_helper_interface_mode_t mode;

		mode = __cvmx_get_mode_cn73xx(xiface);
		return mode;
	}

	/*
	 * Octeon II models
	 */
	if (OCTEON_IS_OCTEON2())
		return __cvmx_get_mode_octeon2(xi.interface);

	/*
	 * Octeon and Octeon Plus models
	 */
	if (xi.interface == 2) {
		iface_ops[xi.interface] = &iface_ops_npi;
	} else if (xi.interface == 3) {
		iface_ops[xi.interface] = &iface_ops_dis;
	} else {
		union cvmx_gmxx_inf_mode mode;

		mode.u64 = csr_rd(CVMX_GMXX_INF_MODE(xi.interface));

		if (!mode.s.en)
			iface_ops[xi.interface] = &iface_ops_dis;
		else if (mode.s.type)
			iface_ops[xi.interface] = &iface_ops_gmii;
		else
			iface_ops[xi.interface] = &iface_ops_rgmii;
	}

	return iface_ops[xi.interface]->mode;
}

/**
 * Determine the actual number of hardware ports connected to an
 * interface. It doesn't setup the ports or enable them.
 *
 * @param xiface Interface to enumerate
 *
 * Return: The number of ports on the interface, negative on failure
 */
int cvmx_helper_interface_enumerate(int xiface)
{
	struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
	int result = 0;

	cvmx_helper_interface_get_mode(xiface);
	if (iface_node_ops[xi.node][xi.interface]->enumerate)
		result = iface_node_ops[xi.node][xi.interface]->enumerate(xiface);

	return result;
}

/**
 * This function probes an interface to determine the actual number of
 * hardware ports connected to it. It does some setup the ports but
 * doesn't enable them. The main goal here is to set the global
 * interface_port_count[interface] correctly. Final hardware setup of
 * the ports will be performed later.
 *
 * @param xiface Interface to probe
 *
 * Return: Zero on success, negative on failure
 */
int cvmx_helper_interface_probe(int xiface)
{
	/*
	 * At this stage in the game we don't want packets to be
	 * moving yet.  The following probe calls should perform
	 * hardware setup needed to determine port counts. Receive
	 * must still be disabled.
	 */
	int nports;
	int has_fcs;
	enum cvmx_pko_padding padding = CVMX_PKO_PADDING_NONE;
	struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);

	nports = -1;
	has_fcs = 0;

	cvmx_helper_interface_get_mode(xiface);
	if (iface_node_ops[xi.node][xi.interface]->probe)
		nports = iface_node_ops[xi.node][xi.interface]->probe(xiface);

	switch (iface_node_ops[xi.node][xi.interface]->mode) {
		/* These types don't support ports to IPD/PKO */
	case CVMX_HELPER_INTERFACE_MODE_DISABLED:
	case CVMX_HELPER_INTERFACE_MODE_PCIE:
		nports = 0;
		break;
		/* XAUI is a single high speed port */
	case CVMX_HELPER_INTERFACE_MODE_XAUI:
	case CVMX_HELPER_INTERFACE_MODE_RXAUI:
	case CVMX_HELPER_INTERFACE_MODE_XLAUI:
	case CVMX_HELPER_INTERFACE_MODE_XFI:
	case CVMX_HELPER_INTERFACE_MODE_10G_KR:
	case CVMX_HELPER_INTERFACE_MODE_40G_KR4:
	case CVMX_HELPER_INTERFACE_MODE_MIXED:
		has_fcs = 1;
		padding = CVMX_PKO_PADDING_60;
		break;
		/*
		 * RGMII/GMII/MII are all treated about the same. Most
		 * functions refer to these ports as RGMII.
		 */
	case CVMX_HELPER_INTERFACE_MODE_RGMII:
	case CVMX_HELPER_INTERFACE_MODE_GMII:
		padding = CVMX_PKO_PADDING_60;
		break;
		/*
		 * SPI4 can have 1-16 ports depending on the device at
		 * the other end.
		 */
	case CVMX_HELPER_INTERFACE_MODE_SPI:
		padding = CVMX_PKO_PADDING_60;
		break;
		/*
		 * SGMII can have 1-4 ports depending on how many are
		 * hooked up.
		 */
	case CVMX_HELPER_INTERFACE_MODE_SGMII:
	case CVMX_HELPER_INTERFACE_MODE_QSGMII:
		padding = CVMX_PKO_PADDING_60;
	case CVMX_HELPER_INTERFACE_MODE_PICMG:
		has_fcs = 1;
		break;
		/* PCI target Network Packet Interface */
	case CVMX_HELPER_INTERFACE_MODE_NPI:
		break;
		/*
		 * Special loopback only ports. These are not the same
		 * as other ports in loopback mode.
		 */
	case CVMX_HELPER_INTERFACE_MODE_LOOP:
		break;
		/* SRIO has 2^N ports, where N is number of interfaces */
	case CVMX_HELPER_INTERFACE_MODE_SRIO:
		break;
	case CVMX_HELPER_INTERFACE_MODE_ILK:
		padding = CVMX_PKO_PADDING_60;
		has_fcs = 1;
		break;
	case CVMX_HELPER_INTERFACE_MODE_AGL:
		has_fcs = 1;
		break;
	}

	if (nports == -1)
		return -1;

	if (!octeon_has_feature(OCTEON_FEATURE_PKND))
		has_fcs = 0;

	nports = __cvmx_helper_board_interface_probe(xiface, nports);
	__cvmx_helper_init_interface(xiface, nports, has_fcs, padding);
	/* Make sure all global variables propagate to other cores */
	CVMX_SYNCWS;

	return 0;
}

/**
 * @INTERNAL
 * Setup backpressure.
 *
 * Return: Zero on success, negative on failure
 */
static int __cvmx_helper_global_setup_backpressure(int node)
{
	cvmx_qos_proto_t qos_proto;
	cvmx_qos_pkt_mode_t qos_mode;
	int port, xipdport;
	unsigned int bpmask;
	int interface, xiface, ports;
	int num_interfaces = cvmx_helper_get_number_of_interfaces();

	if (cvmx_rgmii_backpressure_dis) {
		qos_proto = CVMX_QOS_PROTO_NONE;
		qos_mode = CVMX_QOS_PKT_MODE_DROP;
	} else {
		qos_proto = CVMX_QOS_PROTO_PAUSE;
		qos_mode = CVMX_QOS_PKT_MODE_HWONLY;
	}

	for (interface = 0; interface < num_interfaces; interface++) {
		xiface = cvmx_helper_node_interface_to_xiface(node, interface);
		ports = cvmx_helper_ports_on_interface(xiface);

		switch (cvmx_helper_interface_get_mode(xiface)) {
		case CVMX_HELPER_INTERFACE_MODE_DISABLED:
		case CVMX_HELPER_INTERFACE_MODE_PCIE:
		case CVMX_HELPER_INTERFACE_MODE_SRIO:
		case CVMX_HELPER_INTERFACE_MODE_ILK:
		case CVMX_HELPER_INTERFACE_MODE_NPI:
		case CVMX_HELPER_INTERFACE_MODE_PICMG:
			break;
		case CVMX_HELPER_INTERFACE_MODE_LOOP:
		case CVMX_HELPER_INTERFACE_MODE_XAUI:
		case CVMX_HELPER_INTERFACE_MODE_RXAUI:
		case CVMX_HELPER_INTERFACE_MODE_XLAUI:
		case CVMX_HELPER_INTERFACE_MODE_XFI:
		case CVMX_HELPER_INTERFACE_MODE_10G_KR:
		case CVMX_HELPER_INTERFACE_MODE_40G_KR4:
			bpmask = (cvmx_rgmii_backpressure_dis) ? 0xF : 0;
			if (octeon_has_feature(OCTEON_FEATURE_BGX)) {
				for (port = 0; port < ports; port++) {
					xipdport = cvmx_helper_get_ipd_port(xiface, port);
					cvmx_bgx_set_flowctl_mode(xipdport, qos_proto, qos_mode);
				}
				cvmx_bgx_set_backpressure_override(xiface, bpmask);
			}
			break;
		case CVMX_HELPER_INTERFACE_MODE_RGMII:
		case CVMX_HELPER_INTERFACE_MODE_GMII:
		case CVMX_HELPER_INTERFACE_MODE_SPI:
		case CVMX_HELPER_INTERFACE_MODE_SGMII:
		case CVMX_HELPER_INTERFACE_MODE_QSGMII:
		case CVMX_HELPER_INTERFACE_MODE_MIXED:
			bpmask = (cvmx_rgmii_backpressure_dis) ? 0xF : 0;
			if (octeon_has_feature(OCTEON_FEATURE_BGX)) {
				for (port = 0; port < ports; port++) {
					xipdport = cvmx_helper_get_ipd_port(xiface, port);
					cvmx_bgx_set_flowctl_mode(xipdport, qos_proto, qos_mode);
				}
				cvmx_bgx_set_backpressure_override(xiface, bpmask);
			} else {
				cvmx_gmx_set_backpressure_override(interface, bpmask);
			}
			break;
		case CVMX_HELPER_INTERFACE_MODE_AGL:
			bpmask = (cvmx_rgmii_backpressure_dis) ? 0x1 : 0;
			cvmx_agl_set_backpressure_override(interface, bpmask);
			break;
		}
	}
	return 0;
}

/**
 * @INTERNAL
 * Enable packet input/output from the hardware. This function is
 * called after all internal setup is complete and IPD is enabled.
 * After this function completes, packets will be accepted from the
 * hardware ports. PKO should still be disabled to make sure packets
 * aren't sent out partially setup hardware.
 *
 * @param xiface Interface to enable
 *
 * Return: Zero on success, negative on failure
 */
int __cvmx_helper_packet_hardware_enable(int xiface)
{
	int result = 0;
	struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);

	if (iface_node_ops[xi.node][xi.interface]->enable)
		result = iface_node_ops[xi.node][xi.interface]->enable(xiface);

	return result;
}

int cvmx_helper_ipd_and_packet_input_enable(void)
{
	return cvmx_helper_ipd_and_packet_input_enable_node(cvmx_get_node_num());
}

/**
 * Called after all internal packet IO paths are setup. This
 * function enables IPD/PIP and begins packet input and output.
 *
 * Return: Zero on success, negative on failure
 */
int cvmx_helper_ipd_and_packet_input_enable_node(int node)
{
	int num_interfaces;
	int interface;
	int num_ports;

	if (octeon_has_feature(OCTEON_FEATURE_PKI)) {
		cvmx_helper_pki_enable(node);
	} else {
		/* Enable IPD */
		cvmx_ipd_enable();
	}

	/*
	 * Time to enable hardware ports packet input and output. Note
	 * that at this point IPD/PIP must be fully functional and PKO
	 * must be disabled .
	 */
	num_interfaces = cvmx_helper_get_number_of_interfaces();
	for (interface = 0; interface < num_interfaces; interface++) {
		int xiface = cvmx_helper_node_interface_to_xiface(node, interface);

		num_ports = cvmx_helper_ports_on_interface(xiface);
		if (num_ports > 0)
			__cvmx_helper_packet_hardware_enable(xiface);
	}

	/* Finally enable PKO now that the entire path is up and running */
	/* enable pko */
	if (octeon_has_feature(OCTEON_FEATURE_CN78XX_WQE))
		; // cvmx_pko_enable_78xx(0); already enabled
	else
		cvmx_pko_enable();

	return 0;
}

/**
 * Initialize the PIP, IPD, and PKO hardware to support
 * simple priority based queues for the ethernet ports. Each
 * port is configured with a number of priority queues based
 * on CVMX_PKO_QUEUES_PER_PORT_* where each queue is lower
 * priority than the previous.
 *
 * Return: Zero on success, non-zero on failure
 */
int cvmx_helper_initialize_packet_io_node(unsigned int node)
{
	int result = 0;
	int interface;
	int xiface;
	union cvmx_l2c_cfg l2c_cfg;
	union cvmx_smix_en smix_en;
	const int num_interfaces = cvmx_helper_get_number_of_interfaces();

	/*
	 * Tell L2 to give the IOB statically higher priority compared
	 * to the cores. This avoids conditions where IO blocks might
	 * be starved under very high L2 loads.
	 */
	if (OCTEON_IS_OCTEON2() || OCTEON_IS_OCTEON3()) {
		union cvmx_l2c_ctl l2c_ctl;

		l2c_ctl.u64 = csr_rd_node(node, CVMX_L2C_CTL);
		l2c_ctl.s.rsp_arb_mode = 1;
		l2c_ctl.s.xmc_arb_mode = 0;
		csr_wr_node(node, CVMX_L2C_CTL, l2c_ctl.u64);
	} else {
		l2c_cfg.u64 = csr_rd(CVMX_L2C_CFG);
		l2c_cfg.s.lrf_arb_mode = 0;
		l2c_cfg.s.rfb_arb_mode = 0;
		csr_wr(CVMX_L2C_CFG, l2c_cfg.u64);
	}

	int smi_inf;
	int i;

	/* Newer chips have more than one SMI/MDIO interface */
	if (OCTEON_IS_MODEL(OCTEON_CN68XX) || OCTEON_IS_MODEL(OCTEON_CN78XX))
		smi_inf = 4;
	else if (OCTEON_IS_MODEL(OCTEON_CN73XX) || OCTEON_IS_MODEL(OCTEON_CNF75XX))
		smi_inf = 2;
	else
		smi_inf = 2;

	for (i = 0; i < smi_inf; i++) {
		/* Make sure SMI/MDIO is enabled so we can query PHYs */
		smix_en.u64 = csr_rd_node(node, CVMX_SMIX_EN(i));
		if (!smix_en.s.en) {
			smix_en.s.en = 1;
			csr_wr_node(node, CVMX_SMIX_EN(i), smix_en.u64);
		}
	}

	//vinita_to_do ask it need to be modify for multinode
	__cvmx_helper_init_port_valid();

	for (interface = 0; interface < num_interfaces; interface++) {
		xiface = cvmx_helper_node_interface_to_xiface(node, interface);
		result |= cvmx_helper_interface_probe(xiface);
	}

	/* PKO3 init precedes that of interfaces */
	if (octeon_has_feature(OCTEON_FEATURE_CN78XX_WQE)) {
		__cvmx_helper_init_port_config_data(node);
		result = cvmx_helper_pko3_init_global(node);
	} else {
		result = cvmx_helper_pko_init();
	}

	/* Errata SSO-29000, Disabling power saving SSO conditional clocking */
	if (octeon_has_feature(OCTEON_FEATURE_CN78XX_WQE)) {
		cvmx_sso_ws_cfg_t cfg;

		cfg.u64 = csr_rd_node(node, CVMX_SSO_WS_CFG);
		cfg.s.sso_cclk_dis = 1;
		csr_wr_node(node, CVMX_SSO_WS_CFG, cfg.u64);
	}

	if (result < 0)
		return result;

	for (interface = 0; interface < num_interfaces; interface++) {
		xiface = cvmx_helper_node_interface_to_xiface(node, interface);
		/* Skip invalid/disabled interfaces */
		if (cvmx_helper_ports_on_interface(xiface) <= 0)
			continue;
		debug("Node %d Interface %d has %d ports (%s)\n",
		      node, interface,
		       cvmx_helper_ports_on_interface(xiface),
		       cvmx_helper_interface_mode_to_string(
			       cvmx_helper_interface_get_mode(xiface)));

		result |= __cvmx_helper_ipd_setup_interface(xiface);
		if (octeon_has_feature(OCTEON_FEATURE_CN78XX_WQE))
			result |= cvmx_helper_pko3_init_interface(xiface);
		else
			result |= __cvmx_helper_interface_setup_pko(interface);
	}

	if (octeon_has_feature(OCTEON_FEATURE_PKI))
		result |= __cvmx_helper_pki_global_setup(node);
	else
		result |= __cvmx_helper_ipd_global_setup();

	/* Enable any flow control and backpressure */
	result |= __cvmx_helper_global_setup_backpressure(node);

	/* export app config if set */
	if (cvmx_export_app_config)
		result |= (*cvmx_export_app_config)();

	if (cvmx_ipd_cfg.ipd_enable && cvmx_pki_dflt_init[node])
		result |= cvmx_helper_ipd_and_packet_input_enable_node(node);
	return result;
}

/**
 * Initialize the PIP, IPD, and PKO hardware to support
 * simple priority based queues for the ethernet ports. Each
 * port is configured with a number of priority queues based
 * on CVMX_PKO_QUEUES_PER_PORT_* where each queue is lower
 * priority than the previous.
 *
 * Return: Zero on success, non-zero on failure
 */
int cvmx_helper_initialize_packet_io_global(void)
{
	unsigned int node = cvmx_get_node_num();

	return cvmx_helper_initialize_packet_io_node(node);
}

/**
 * Does core local initialization for packet io
 *
 * Return: Zero on success, non-zero on failure
 */
int cvmx_helper_initialize_packet_io_local(void)
{
	if (octeon_has_feature(OCTEON_FEATURE_CN78XX_WQE))
		__cvmx_pko3_dq_table_setup();

	return 0;
}

struct cvmx_buffer_list {
	struct cvmx_buffer_list *next;
};

/**
 * Disables the sending of flow control (pause) frames on the specified
 * GMX port(s).
 *
 * @param interface Which interface (0 or 1)
 * @param port_mask Mask (4bits) of which ports on the interface to disable
 *                  backpressure on.
 *                  1 => disable backpressure
 *                  0 => enable backpressure
 *
 * Return: 0 on success
 *         -1 on error
 */
int cvmx_gmx_set_backpressure_override(u32 interface, uint32_t port_mask)
{
	union cvmx_gmxx_tx_ovr_bp gmxx_tx_ovr_bp;
	/* Check for valid arguments */
	if (port_mask & ~0xf || interface & ~0x1)
		return -1;
	if (interface >= CVMX_HELPER_MAX_GMX)
		return -1;

	gmxx_tx_ovr_bp.u64 = 0;
	gmxx_tx_ovr_bp.s.en = port_mask;       /* Per port Enable back pressure override */
	gmxx_tx_ovr_bp.s.ign_full = port_mask; /* Ignore the RX FIFO full when computing BP */
	csr_wr(CVMX_GMXX_TX_OVR_BP(interface), gmxx_tx_ovr_bp.u64);
	return 0;
}

/**
 * Disables the sending of flow control (pause) frames on the specified
 * AGL (RGMII) port(s).
 *
 * @param interface Which interface (0 or 1)
 * @param port_mask Mask (4bits) of which ports on the interface to disable
 *                  backpressure on.
 *                  1 => disable backpressure
 *                  0 => enable backpressure
 *
 * Return: 0 on success
 *         -1 on error
 */
int cvmx_agl_set_backpressure_override(u32 interface, uint32_t port_mask)
{
	union cvmx_agl_gmx_tx_ovr_bp agl_gmx_tx_ovr_bp;
	int port = cvmx_helper_agl_get_port(interface);

	if (port == -1)
		return -1;
	/* Check for valid arguments */
	agl_gmx_tx_ovr_bp.u64 = 0;
	/* Per port Enable back pressure override */
	agl_gmx_tx_ovr_bp.s.en = port_mask;
	/* Ignore the RX FIFO full when computing BP */
	agl_gmx_tx_ovr_bp.s.ign_full = port_mask;
	csr_wr(CVMX_GMXX_TX_OVR_BP(port), agl_gmx_tx_ovr_bp.u64);
	return 0;
}

/**
 * Auto configure an IPD/PKO port link state and speed. This
 * function basically does the equivalent of:
 * cvmx_helper_link_set(ipd_port, cvmx_helper_link_get(ipd_port));
 *
 * @param xipd_port IPD/PKO port to auto configure
 *
 * Return: Link state after configure
 */
cvmx_helper_link_info_t cvmx_helper_link_autoconf(int xipd_port)
{
	cvmx_helper_link_info_t link_info;
	int xiface = cvmx_helper_get_interface_num(xipd_port);
	int index = cvmx_helper_get_interface_index_num(xipd_port);
	struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
	int interface = xi.interface;

	if (interface == -1 || index == -1 || index >= cvmx_helper_ports_on_interface(xiface)) {
		link_info.u64 = 0;
		return link_info;
	}

	link_info = cvmx_helper_link_get(xipd_port);
	if (link_info.u64 == (__cvmx_helper_get_link_info(xiface, index)).u64)
		return link_info;

	if (!link_info.s.link_up)
		cvmx_error_disable_group(CVMX_ERROR_GROUP_ETHERNET, xipd_port);

	/* If we fail to set the link speed, port_link_info will not change */
	cvmx_helper_link_set(xipd_port, link_info);

	if (link_info.s.link_up)
		cvmx_error_enable_group(CVMX_ERROR_GROUP_ETHERNET, xipd_port);

	return link_info;
}

/**
 * Return the link state of an IPD/PKO port as returned by
 * auto negotiation. The result of this function may not match
 * Octeon's link config if auto negotiation has changed since
 * the last call to cvmx_helper_link_set().
 *
 * @param xipd_port IPD/PKO port to query
 *
 * Return: Link state
 */
cvmx_helper_link_info_t cvmx_helper_link_get(int xipd_port)
{
	cvmx_helper_link_info_t result;
	int xiface = cvmx_helper_get_interface_num(xipd_port);
	int index = cvmx_helper_get_interface_index_num(xipd_port);
	struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
	struct cvmx_fdt_sfp_info *sfp_info;

	/*
	 * The default result will be a down link unless the code
	 * below changes it.
	 */
	result.u64 = 0;

	if (__cvmx_helper_xiface_is_null(xiface) || index == -1 ||
	    index >= cvmx_helper_ports_on_interface(xiface)) {
		return result;
	}

	if (iface_node_ops[xi.node][xi.interface]->link_get)
		result = iface_node_ops[xi.node][xi.interface]->link_get(xipd_port);

	if (xipd_port >= 0) {
		cvmx_helper_update_link_led(xiface, index, result);

		sfp_info = cvmx_helper_cfg_get_sfp_info(xiface, index);

		while (sfp_info) {
			if ((!result.s.link_up || (result.s.link_up && sfp_info->last_mod_abs)))
				cvmx_sfp_check_mod_abs(sfp_info, sfp_info->mod_abs_data);
			sfp_info = sfp_info->next_iface_sfp;
		}
	}

	return result;
}

/**
 * Configure an IPD/PKO port for the specified link state. This
 * function does not influence auto negotiation at the PHY level.
 * The passed link state must always match the link state returned
 * by cvmx_helper_link_get(). It is normally best to use
 * cvmx_helper_link_autoconf() instead.
 *
 * @param xipd_port  IPD/PKO port to configure
 * @param link_info The new link state
 *
 * Return: Zero on success, negative on failure
 */
int cvmx_helper_link_set(int xipd_port, cvmx_helper_link_info_t link_info)
{
	int result = -1;
	int xiface = cvmx_helper_get_interface_num(xipd_port);
	struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
	int index = cvmx_helper_get_interface_index_num(xipd_port);

	if (__cvmx_helper_xiface_is_null(xiface) || index == -1 ||
	    index >= cvmx_helper_ports_on_interface(xiface))
		return -1;

	if (iface_node_ops[xi.node][xi.interface]->link_set)
		result = iface_node_ops[xi.node][xi.interface]->link_set(xipd_port, link_info);

	/*
	 * Set the port_link_info here so that the link status is
	 * updated no matter how cvmx_helper_link_set is called. We
	 * don't change the value if link_set failed.
	 */
	if (result == 0)
		__cvmx_helper_set_link_info(xiface, index, link_info);
	return result;
}

void *cvmx_helper_mem_alloc(int node, uint64_t alloc_size, uint64_t align)
{
	s64 paddr;

	paddr = cvmx_bootmem_phy_alloc_range(alloc_size, align, cvmx_addr_on_node(node, 0ull),
					     cvmx_addr_on_node(node, 0xffffffffff));
	if (paddr <= 0ll) {
		printf("ERROR: %s failed size %u\n", __func__, (unsigned int)alloc_size);
		return NULL;
	}
	return cvmx_phys_to_ptr(paddr);
}