/*

   * Copyright 2008-2011 Freescale Semiconductor, Inc.

   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License
   * Version 2 as published by the Free Software Foundation.
   */
  
  #ifndef FSL_DDR_MAIN_H
  #define FSL_DDR_MAIN_H

  #include <fsl_ddr_sdram.h>
  #include <fsl_ddr_dimm_params.h>

  #include <common_timing_params.h>

  #if defined(CONFIG_DDR_SPD) || defined(CONFIG_SPD_EEPROM)

  /*
   * Bind the main DDR setup driver's generic names
   * to this specific DDR technology.
   */
  static __inline__ int
  compute_dimm_parameters(const generic_spd_eeprom_t *spd,
  			dimm_params_t *pdimm,
  			unsigned int dimm_number)
  {
  	return ddr_compute_dimm_parameters(spd, pdimm, dimm_number);
  }

  #endif

  
  /*
   * Data Structures
   *
   * All data structures have to be on the stack
   */

  #define CONFIG_SYS_NUM_DDR_CTLRS CONFIG_NUM_DDR_CONTROLLERS
  #define CONFIG_SYS_DIMM_SLOTS_PER_CTLR CONFIG_DIMM_SLOTS_PER_CTLR

  
  typedef struct {
  	generic_spd_eeprom_t

  	   spd_installed_dimms[CONFIG_SYS_NUM_DDR_CTLRS][CONFIG_SYS_DIMM_SLOTS_PER_CTLR];

  	struct dimm_params_s

  	   dimm_params[CONFIG_SYS_NUM_DDR_CTLRS][CONFIG_SYS_DIMM_SLOTS_PER_CTLR];
  	memctl_options_t memctl_opts[CONFIG_SYS_NUM_DDR_CTLRS];
  	common_timing_params_t common_timing_params[CONFIG_SYS_NUM_DDR_CTLRS];
  	fsl_ddr_cfg_regs_t fsl_ddr_config_reg[CONFIG_SYS_NUM_DDR_CTLRS];

  } fsl_ddr_info_t;
  
  /* Compute steps */
  #define STEP_GET_SPD                 (1 << 0)
  #define STEP_COMPUTE_DIMM_PARMS      (1 << 1)
  #define STEP_COMPUTE_COMMON_PARMS    (1 << 2)
  #define STEP_GATHER_OPTS             (1 << 3)
  #define STEP_ASSIGN_ADDRESSES        (1 << 4)
  #define STEP_COMPUTE_REGS            (1 << 5)
  #define STEP_PROGRAM_REGS            (1 << 6)
  #define STEP_ALL                     0xFFF

  unsigned long long

  fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step,
  				       unsigned int size_only);

  const char *step_to_string(unsigned int step);

  unsigned int compute_fsl_memctl_config_regs(const memctl_options_t *popts,

  			       fsl_ddr_cfg_regs_t *ddr,
  			       const common_timing_params_t *common_dimm,
  			       const dimm_params_t *dimm_parameters,

  			       unsigned int dbw_capacity_adjust,
  			       unsigned int size_only);

  unsigned int compute_lowest_common_dimm_parameters(
  				const dimm_params_t *dimm_params,
  				common_timing_params_t *outpdimm,
  				unsigned int number_of_dimms);

  unsigned int populate_memctl_options(int all_dimms_registered,

  				memctl_options_t *popts,

  				dimm_params_t *pdimm,

  				unsigned int ctrl_num);

  void check_interleaving_options(fsl_ddr_info_t *pinfo);

  unsigned int mclk_to_picos(unsigned int mclk);
  unsigned int get_memory_clk_period_ps(void);
  unsigned int picos_to_mclk(unsigned int picos);
  void fsl_ddr_set_lawbar(
  		const common_timing_params_t *memctl_common_params,
  		unsigned int memctl_interleaved,
  		unsigned int ctrl_num);

  int fsl_ddr_interactive_env_var_exists(void);
  unsigned long long fsl_ddr_interactive(fsl_ddr_info_t *pinfo, int var_is_set);

  void fsl_ddr_get_spd(generic_spd_eeprom_t *ctrl_dimms_spd,
  			   unsigned int ctrl_num);
  
  int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
  unsigned int check_fsl_memctl_config_regs(const fsl_ddr_cfg_regs_t *ddr);
  
  /* processor specific function */
  void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,

  				   unsigned int ctrl_num, int step);

  
  /* board specific function */
  int fsl_ddr_get_dimm_params(dimm_params_t *pdimm,
  			unsigned int controller_number,
  			unsigned int dimm_number);

  #endif