/*
 * Copyright 2012 Freescale Semiconductor, Inc.
 *	Roy Zang <tie-fei.zang@freescale.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */
#include <common.h>
#include <phy.h>
#include <fm_eth.h>
#include <asm/io.h>
#include <asm/immap_85xx.h>
#include <asm/fsl_serdes.h>

u32 port_to_devdisr[] = {
	[FM1_DTSEC1] = FSL_CORENET_DEVDISR2_DTSEC1_1,
	[FM1_DTSEC2] = FSL_CORENET_DEVDISR2_DTSEC1_2,
	[FM1_DTSEC3] = FSL_CORENET_DEVDISR2_DTSEC1_3,
	[FM1_DTSEC4] = FSL_CORENET_DEVDISR2_DTSEC1_4,
	[FM1_DTSEC5] = FSL_CORENET_DEVDISR2_DTSEC1_5,
	[FM1_DTSEC6] = FSL_CORENET_DEVDISR2_DTSEC1_6,
	[FM1_DTSEC9] = FSL_CORENET_DEVDISR2_DTSEC1_9,
	[FM1_DTSEC10] = FSL_CORENET_DEVDISR2_DTSEC1_10,
	[FM1_10GEC1] = FSL_CORENET_DEVDISR2_10GEC1_1,
	[FM1_10GEC2] = FSL_CORENET_DEVDISR2_10GEC1_2,
	[FM2_DTSEC1] = FSL_CORENET_DEVDISR2_DTSEC2_1,
	[FM2_DTSEC2] = FSL_CORENET_DEVDISR2_DTSEC2_2,
	[FM2_DTSEC3] = FSL_CORENET_DEVDISR2_DTSEC2_3,
	[FM2_DTSEC4] = FSL_CORENET_DEVDISR2_DTSEC2_4,
	[FM2_DTSEC5] = FSL_CORENET_DEVDISR2_DTSEC2_5,
	[FM2_DTSEC6] = FSL_CORENET_DEVDISR2_DTSEC2_6,
	[FM2_DTSEC9] = FSL_CORENET_DEVDISR2_DTSEC2_9,
	[FM2_DTSEC10] = FSL_CORENET_DEVDISR2_DTSEC2_10,
	[FM2_10GEC1] = FSL_CORENET_DEVDISR2_10GEC2_1,
	[FM2_10GEC2] = FSL_CORENET_DEVDISR2_10GEC2_2,
};

static int is_device_disabled(enum fm_port port)
{
	ccsr_gur_t *gur = (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
	u32 devdisr2 = in_be32(&gur->devdisr2);

	return port_to_devdisr[port] & devdisr2;
}

void fman_disable_port(enum fm_port port)
{
	ccsr_gur_t *gur = (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);

	setbits_be32(&gur->devdisr2, port_to_devdisr[port]);
}

void fman_enable_port(enum fm_port port)
{
	ccsr_gur_t *gur = (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);

	clrbits_be32(&gur->devdisr2, port_to_devdisr[port]);
}

phy_interface_t fman_port_enet_if(enum fm_port port)
{
	ccsr_gur_t *gur = (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
	u32 rcwsr13 = in_be32(&gur->rcwsr[13]);

	if (is_device_disabled(port))
		return PHY_INTERFACE_MODE_NONE;

	if ((port == FM1_10GEC1 || port == FM1_10GEC2) &&
	    ((is_serdes_configured(XAUI_FM1_MAC9))	||
	     (is_serdes_configured(XAUI_FM1_MAC10))	||
	     (is_serdes_configured(XFI_FM1_MAC9))	||
	     (is_serdes_configured(XFI_FM1_MAC10))))
		return PHY_INTERFACE_MODE_XGMII;

	if ((port == FM1_DTSEC9 || port == FM1_DTSEC10) &&
	    ((is_serdes_configured(XFI_FM1_MAC9)) ||
	     (is_serdes_configured(XFI_FM1_MAC10))))
		return PHY_INTERFACE_MODE_NONE;

	if ((port == FM2_10GEC1 || port == FM2_10GEC2) &&
	    ((is_serdes_configured(XAUI_FM2_MAC9))	||
	     (is_serdes_configured(XAUI_FM2_MAC10))	||
	     (is_serdes_configured(XFI_FM2_MAC9))	||
	     (is_serdes_configured(XFI_FM2_MAC10))))
		return PHY_INTERFACE_MODE_XGMII;

#define FSL_CORENET_RCWSR13_EC1			0x60000000 /* bits 417..418 */
#define FSL_CORENET_RCWSR13_EC1_FM2_DTSEC5_RGMII	0x00000000
#define FSL_CORENET_RCWSR13_EC1_FM2_GPIO		0x40000000
#define FSL_CORENET_RCWSR13_EC2			0x18000000 /* bits 419..420 */
#define FSL_CORENET_RCWSR13_EC2_FM1_DTSEC5_RGMII	0x00000000
#define FSL_CORENET_RCWSR13_EC2_FM2_DTSEC6_RGMII	0x08000000
#define FSL_CORENET_RCWSR13_EC2_FM1_GPIO		0x10000000
	/* handle RGMII first */
	if ((port == FM2_DTSEC5) && ((rcwsr13 & FSL_CORENET_RCWSR13_EC1) ==
		FSL_CORENET_RCWSR13_EC1_FM2_DTSEC5_RGMII))
		return PHY_INTERFACE_MODE_RGMII;

	if ((port == FM1_DTSEC5) && ((rcwsr13 & FSL_CORENET_RCWSR13_EC2) ==
		FSL_CORENET_RCWSR13_EC2_FM1_DTSEC5_RGMII))
		return PHY_INTERFACE_MODE_RGMII;

	if ((port == FM2_DTSEC6) && ((rcwsr13 & FSL_CORENET_RCWSR13_EC2) ==
		FSL_CORENET_RCWSR13_EC2_FM2_DTSEC6_RGMII))
		return PHY_INTERFACE_MODE_RGMII;
	switch (port) {
	case FM1_DTSEC1:
	case FM1_DTSEC2:
	case FM1_DTSEC3:
	case FM1_DTSEC4:
	case FM1_DTSEC5:
	case FM1_DTSEC6:
	case FM1_DTSEC9:
	case FM1_DTSEC10:
		if (is_serdes_configured(SGMII_FM1_DTSEC1 + port - FM1_DTSEC1))
			return PHY_INTERFACE_MODE_SGMII;
		break;
	case FM2_DTSEC1:
	case FM2_DTSEC2:
	case FM2_DTSEC3:
	case FM2_DTSEC4:
	case FM2_DTSEC5:
	case FM2_DTSEC6:
	case FM2_DTSEC9:
	case FM2_DTSEC10:
		if (is_serdes_configured(SGMII_FM2_DTSEC1 + port - FM2_DTSEC1))
			return PHY_INTERFACE_MODE_SGMII;
		break;
	default:
		break;
	}

	/* handle QSGMII */
	switch (port) {
	case FM1_DTSEC1:
	case FM1_DTSEC2:
	case FM1_DTSEC3:
	case FM1_DTSEC4:
		/* check lane G on SerDes1 */
		if (is_serdes_configured(QSGMII_FM1_A))
			return PHY_INTERFACE_MODE_QSGMII;
		break;
	case FM1_DTSEC5:
	case FM1_DTSEC6:
	case FM1_DTSEC9:
	case FM1_DTSEC10:
		/* check lane C on SerDes1 */
		if (is_serdes_configured(QSGMII_FM1_B))
			return PHY_INTERFACE_MODE_QSGMII;
		break;
	case FM2_DTSEC1:
	case FM2_DTSEC2:
	case FM2_DTSEC3:
	case FM2_DTSEC4:
		/* check lane G on SerDes2 */
		if (is_serdes_configured(QSGMII_FM2_A))
			return PHY_INTERFACE_MODE_QSGMII;
		break;
	case FM2_DTSEC5:
	case FM2_DTSEC6:
	case FM2_DTSEC9:
	case FM2_DTSEC10:
		/* check lane C on SerDes2 */
		if (is_serdes_configured(QSGMII_FM2_B))
			return PHY_INTERFACE_MODE_QSGMII;
		break;
	default:
		break;
	}

	return PHY_INTERFACE_MODE_NONE;
}