| Kumar Gala | 124b082 | 2008-08-26 15:01:29 -0500 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2008 Freescale Semiconductor, Inc. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * Version 2 as published by the Free Software Foundation. |
| 7 | */ |
| 8 | |
| 9 | #ifndef FSL_DDR_MAIN_H |
| 10 | #define FSL_DDR_MAIN_H |
| 11 | |
| 12 | #include <asm/fsl_ddr_sdram.h> |
| 13 | |
| 14 | #include "ddr1_2_dimm_params.h" |
| 15 | #include "common_timing_params.h" |
| 16 | |
| 17 | /* |
| 18 | * Bind the main DDR setup driver's generic names |
| 19 | * to this specific DDR technology. |
| 20 | */ |
| 21 | static __inline__ int |
| 22 | compute_dimm_parameters(const generic_spd_eeprom_t *spd, |
| 23 | dimm_params_t *pdimm, |
| 24 | unsigned int dimm_number) |
| 25 | { |
| 26 | return ddr_compute_dimm_parameters(spd, pdimm, dimm_number); |
| 27 | } |
| 28 | |
| 29 | /* |
| 30 | * Data Structures |
| 31 | * |
| 32 | * All data structures have to be on the stack |
| 33 | */ |
| 34 | #define CFG_NUM_DDR_CTLRS CONFIG_NUM_DDR_CONTROLLERS |
| 35 | #define CFG_DIMM_SLOTS_PER_CTLR CONFIG_DIMM_SLOTS_PER_CTLR |
| 36 | |
| 37 | typedef struct { |
| 38 | generic_spd_eeprom_t |
| 39 | spd_installed_dimms[CFG_NUM_DDR_CTLRS][CFG_DIMM_SLOTS_PER_CTLR]; |
| 40 | struct dimm_params_s |
| 41 | dimm_params[CFG_NUM_DDR_CTLRS][CFG_DIMM_SLOTS_PER_CTLR]; |
| 42 | memctl_options_t memctl_opts[CFG_NUM_DDR_CTLRS]; |
| 43 | common_timing_params_t common_timing_params[CFG_NUM_DDR_CTLRS]; |
| 44 | fsl_ddr_cfg_regs_t fsl_ddr_config_reg[CFG_NUM_DDR_CTLRS]; |
| 45 | } fsl_ddr_info_t; |
| 46 | |
| 47 | /* Compute steps */ |
| 48 | #define STEP_GET_SPD (1 << 0) |
| 49 | #define STEP_COMPUTE_DIMM_PARMS (1 << 1) |
| 50 | #define STEP_COMPUTE_COMMON_PARMS (1 << 2) |
| 51 | #define STEP_GATHER_OPTS (1 << 3) |
| 52 | #define STEP_ASSIGN_ADDRESSES (1 << 4) |
| 53 | #define STEP_COMPUTE_REGS (1 << 5) |
| 54 | #define STEP_PROGRAM_REGS (1 << 6) |
| 55 | #define STEP_ALL 0xFFF |
| 56 | |
| 57 | extern phys_size_t |
| 58 | fsl_ddr_compute(fsl_ddr_info_t *pinfo, unsigned int start_step); |
| 59 | |
| 60 | extern const char * step_to_string(unsigned int step); |
| 61 | |
| 62 | extern unsigned int |
| 63 | compute_fsl_memctl_config_regs(const memctl_options_t *popts, |
| 64 | fsl_ddr_cfg_regs_t *ddr, |
| 65 | const common_timing_params_t *common_dimm, |
| 66 | const dimm_params_t *dimm_parameters, |
| 67 | unsigned int dbw_capacity_adjust); |
| 68 | extern unsigned int |
| 69 | compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, |
| 70 | common_timing_params_t *outpdimm, |
| 71 | unsigned int number_of_dimms); |
| 72 | extern unsigned int populate_memctl_options(int all_DIMMs_registered, |
| 73 | memctl_options_t *popts, |
| 74 | unsigned int ctrl_num); |
| 75 | |
| 76 | extern unsigned int mclk_to_picos(unsigned int mclk); |
| 77 | extern unsigned int get_memory_clk_period_ps(void); |
| 78 | extern unsigned int picos_to_mclk(unsigned int picos); |
| 79 | |
| 80 | #endif |