/*
   * net/dsa/mv88e6xxx.h - Marvell 88e6xxx switch chip support
   * Copyright (c) 2008 Marvell Semiconductor
   *
   * 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 __MV88E6XXX_H
  #define __MV88E6XXX_H
  
  #define REG_PORT(p)		(0x10 + (p))
  #define REG_GLOBAL		0x1b
  #define REG_GLOBAL2		0x1c
  
  struct mv88e6xxx_priv_state {
  	/*
  	 * When using multi-chip addressing, this mutex protects
  	 * access to the indirect access registers.  (In single-chip
  	 * mode, this mutex is effectively useless.)
  	 */
  	struct mutex	smi_mutex;

  #ifdef CONFIG_NET_DSA_MV88E6XXX_NEED_PPU
  	/*
  	 * Handles automatic disabling and re-enabling of the PHY
  	 * polling unit.
  	 */
  	struct mutex		ppu_mutex;
  	int			ppu_disabled;
  	struct work_struct	ppu_work;
  	struct timer_list	ppu_timer;
  #endif

  	/*
  	 * This mutex serialises access to the statistics unit.
  	 * Hold this mutex over snapshot + dump sequences.
  	 */
  	struct mutex	stats_mutex;

  
  	int		id; /* switch product id */

  };
  
  struct mv88e6xxx_hw_stat {
  	char string[ETH_GSTRING_LEN];
  	int sizeof_stat;
  	int reg;
  };
  
  int __mv88e6xxx_reg_read(struct mii_bus *bus, int sw_addr, int addr, int reg);
  int mv88e6xxx_reg_read(struct dsa_switch *ds, int addr, int reg);
  int __mv88e6xxx_reg_write(struct mii_bus *bus, int sw_addr, int addr,
                            int reg, u16 val);
  int mv88e6xxx_reg_write(struct dsa_switch *ds, int addr, int reg, u16 val);
  int mv88e6xxx_config_prio(struct dsa_switch *ds);

  int mv88e6xxx_set_addr_direct(struct dsa_switch *ds, u8 *addr);

  int mv88e6xxx_set_addr_indirect(struct dsa_switch *ds, u8 *addr);
  int mv88e6xxx_phy_read(struct dsa_switch *ds, int addr, int regnum);
  int mv88e6xxx_phy_write(struct dsa_switch *ds, int addr, int regnum, u16 val);

  void mv88e6xxx_ppu_state_init(struct dsa_switch *ds);
  int mv88e6xxx_phy_read_ppu(struct dsa_switch *ds, int addr, int regnum);
  int mv88e6xxx_phy_write_ppu(struct dsa_switch *ds, int addr,
  			    int regnum, u16 val);

  void mv88e6xxx_poll_link(struct dsa_switch *ds);
  void mv88e6xxx_get_strings(struct dsa_switch *ds,
  			   int nr_stats, struct mv88e6xxx_hw_stat *stats,
  			   int port, uint8_t *data);
  void mv88e6xxx_get_ethtool_stats(struct dsa_switch *ds,
  				 int nr_stats, struct mv88e6xxx_hw_stat *stats,
  				 int port, uint64_t *data);
  
  #define REG_READ(addr, reg)						\
  	({								\
  		int __ret;						\
  									\
  		__ret = mv88e6xxx_reg_read(ds, addr, reg);		\
  		if (__ret < 0)						\
  			return __ret;					\
  		__ret;							\
  	})
  
  #define REG_WRITE(addr, reg, val)					\
  	({								\
  		int __ret;						\
  									\
  		__ret = mv88e6xxx_reg_write(ds, addr, reg, val);	\
  		if (__ret < 0)						\
  			return __ret;					\
  	})
  
  
  
  #endif