/*
 * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights reserved.
 *
 * Author: Shlomi Gridish <gridish@freescale.com>
 *
 * Description:
 * UCC GETH Driver -- PHY handling
 *
 * Changelog:
 * Jun 28, 2006 Li Yang <LeoLi@freescale.com>
 * - Rearrange code and style fixes
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 *
 */
#ifndef __UCC_GETH_PHY_H__
#define __UCC_GETH_PHY_H__

#define MII_end ((u32)-2)
#define MII_read ((u32)-1)

#define MIIMIND_BUSY            0x00000001
#define MIIMIND_NOTVALID        0x00000004

#define UGETH_AN_TIMEOUT        2000

/* 1000BT control (Marvell & BCM54xx at least) */
#define MII_1000BASETCONTROL                  0x09
#define MII_1000BASETCONTROL_FULLDUPLEXCAP    0x0200
#define MII_1000BASETCONTROL_HALFDUPLEXCAP    0x0100

/* Cicada Extended Control Register 1 */
#define MII_CIS8201_EXT_CON1        0x17
#define MII_CIS8201_EXTCON1_INIT    0x0000

/* Cicada Interrupt Mask Register */
#define MII_CIS8201_IMASK           0x19
#define MII_CIS8201_IMASK_IEN       0x8000
#define MII_CIS8201_IMASK_SPEED     0x4000
#define MII_CIS8201_IMASK_LINK      0x2000
#define MII_CIS8201_IMASK_DUPLEX    0x1000
#define MII_CIS8201_IMASK_MASK      0xf000

/* Cicada Interrupt Status Register */
#define MII_CIS8201_ISTAT           0x1a
#define MII_CIS8201_ISTAT_STATUS    0x8000
#define MII_CIS8201_ISTAT_SPEED     0x4000
#define MII_CIS8201_ISTAT_LINK      0x2000
#define MII_CIS8201_ISTAT_DUPLEX    0x1000

/* Cicada Auxiliary Control/Status Register */
#define MII_CIS8201_AUX_CONSTAT        0x1c
#define MII_CIS8201_AUXCONSTAT_INIT    0x0004
#define MII_CIS8201_AUXCONSTAT_DUPLEX  0x0020
#define MII_CIS8201_AUXCONSTAT_SPEED   0x0018
#define MII_CIS8201_AUXCONSTAT_GBIT    0x0010
#define MII_CIS8201_AUXCONSTAT_100     0x0008

/* 88E1011 PHY Status Register */
#define MII_M1011_PHY_SPEC_STATUS               0x11
#define MII_M1011_PHY_SPEC_STATUS_1000          0x8000
#define MII_M1011_PHY_SPEC_STATUS_100           0x4000
#define MII_M1011_PHY_SPEC_STATUS_SPD_MASK      0xc000
#define MII_M1011_PHY_SPEC_STATUS_FULLDUPLEX    0x2000
#define MII_M1011_PHY_SPEC_STATUS_RESOLVED      0x0800
#define MII_M1011_PHY_SPEC_STATUS_LINK          0x0400

#define MII_M1011_IEVENT                0x13
#define MII_M1011_IEVENT_CLEAR          0x0000

#define MII_M1011_IMASK                 0x12
#define MII_M1011_IMASK_INIT            0x6400
#define MII_M1011_IMASK_CLEAR           0x0000

#define MII_DM9161_SCR                  0x10
#define MII_DM9161_SCR_INIT             0x0610

/* DM9161 Specified Configuration and Status Register */
#define MII_DM9161_SCSR                 0x11
#define MII_DM9161_SCSR_100F            0x8000
#define MII_DM9161_SCSR_100H            0x4000
#define MII_DM9161_SCSR_10F             0x2000
#define MII_DM9161_SCSR_10H             0x1000

/* DM9161 Interrupt Register */
#define MII_DM9161_INTR                 0x15
#define MII_DM9161_INTR_PEND            0x8000
#define MII_DM9161_INTR_DPLX_MASK       0x0800
#define MII_DM9161_INTR_SPD_MASK        0x0400
#define MII_DM9161_INTR_LINK_MASK       0x0200
#define MII_DM9161_INTR_MASK            0x0100
#define MII_DM9161_INTR_DPLX_CHANGE     0x0010
#define MII_DM9161_INTR_SPD_CHANGE      0x0008
#define MII_DM9161_INTR_LINK_CHANGE     0x0004
#define MII_DM9161_INTR_INIT            0x0000
#define MII_DM9161_INTR_STOP    \
(MII_DM9161_INTR_DPLX_MASK | MII_DM9161_INTR_SPD_MASK \
 | MII_DM9161_INTR_LINK_MASK | MII_DM9161_INTR_MASK)

/* DM9161 10BT Configuration/Status */
#define MII_DM9161_10BTCSR              0x12
#define MII_DM9161_10BTCSR_INIT         0x7800

#define MII_BASIC_FEATURES    (SUPPORTED_10baseT_Half | \
                 SUPPORTED_10baseT_Full | \
                 SUPPORTED_100baseT_Half | \
                 SUPPORTED_100baseT_Full | \
                 SUPPORTED_Autoneg | \
                 SUPPORTED_TP | \
                 SUPPORTED_MII)

#define MII_GBIT_FEATURES    (MII_BASIC_FEATURES | \
                 SUPPORTED_1000baseT_Half | \
                 SUPPORTED_1000baseT_Full)

#define MII_READ_COMMAND                0x00000001

#define MII_INTERRUPT_DISABLED          0x0
#define MII_INTERRUPT_ENABLED           0x1
/* Taken from mii_if_info and sungem_phy.h */
struct ugeth_mii_info {
	/* Information about the PHY type */
	/* And management functions */
	struct phy_info *phyinfo;

	ucc_mii_mng_t *mii_regs;

	/* forced speed & duplex (no autoneg)
	 * partner speed & duplex & pause (autoneg)
	 */
	int speed;
	int duplex;
	int pause;

	/* The most recently read link state */
	int link;

	/* Enabled Interrupts */
	u32 interrupts;

	u32 advertising;
	int autoneg;
	int mii_id;

	/* private data pointer */
	/* For use by PHYs to maintain extra state */
	void *priv;

	/* Provided by host chip */
	struct net_device *dev;

	/* A lock to ensure that only one thing can read/write
	 * the MDIO bus at a time */
	spinlock_t mdio_lock;

	/* Provided by ethernet driver */
	int (*mdio_read) (struct net_device * dev, int mii_id, int reg);
	void (*mdio_write) (struct net_device * dev, int mii_id, int reg,
			    int val);
};

/* struct phy_info: a structure which defines attributes for a PHY
 *
 * id will contain a number which represents the PHY.  During
 * startup, the driver will poll the PHY to find out what its
 * UID--as defined by registers 2 and 3--is.  The 32-bit result
 * gotten from the PHY will be ANDed with phy_id_mask to
 * discard any bits which may change based on revision numbers
 * unimportant to functionality
 *
 * There are 6 commands which take a ugeth_mii_info structure.
 * Each PHY must declare config_aneg, and read_status.
 */
struct phy_info {
	u32 phy_id;
	char *name;
	unsigned int phy_id_mask;
	u32 features;

	/* Called to initialize the PHY */
	int (*init) (struct ugeth_mii_info * mii_info);

	/* Called to suspend the PHY for power */
	int (*suspend) (struct ugeth_mii_info * mii_info);

	/* Reconfigures autonegotiation (or disables it) */
	int (*config_aneg) (struct ugeth_mii_info * mii_info);

	/* Determines the negotiated speed and duplex */
	int (*read_status) (struct ugeth_mii_info * mii_info);

	/* Clears any pending interrupts */
	int (*ack_interrupt) (struct ugeth_mii_info * mii_info);

	/* Enables or disables interrupts */
	int (*config_intr) (struct ugeth_mii_info * mii_info);

	/* Clears up any memory if needed */
	void (*close) (struct ugeth_mii_info * mii_info);
};

struct phy_info *get_phy_info(struct ugeth_mii_info *mii_info);
void write_phy_reg(struct net_device *dev, int mii_id, int regnum, int value);
int read_phy_reg(struct net_device *dev, int mii_id, int regnum);
void mii_clear_phy_interrupt(struct ugeth_mii_info *mii_info);
void mii_configure_phy_interrupt(struct ugeth_mii_info *mii_info,
				 u32 interrupts);

struct dm9161_private {
	struct timer_list timer;
	int resetdone;
};

#endif				/* __UCC_GETH_PHY_H__ */