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 COMMON_TIMING_PARAMS_H 10 #define COMMON_TIMING_PARAMS_H 11 12 typedef struct { 13 /* parameters to constrict */ 14 15 unsigned int tckmin_x_ps; 16 unsigned int tckmax_ps; 17 unsigned int tckmax_max_ps; 18 unsigned int trcd_ps; 19 unsigned int trp_ps; 20 unsigned int tras_ps; 21 22 unsigned int twr_ps; /* maximum = 63750 ps */ 23 unsigned int twtr_ps; /* maximum = 63750 ps */ 24 unsigned int trfc_ps; /* maximum = 255 ns + 256 ns + .75 ns 25 = 511750 ps */ 26 27 unsigned int trrd_ps; /* maximum = 63750 ps */ 28 unsigned int trc_ps; /* maximum = 254 ns + .75 ns = 254750 ps */ 29 30 unsigned int refresh_rate_ps; 31 unsigned int extended_op_srt; 32 33 unsigned int tis_ps; /* byte 32, spd->ca_setup */ 34 unsigned int tih_ps; /* byte 33, spd->ca_hold */ 35 unsigned int tds_ps; /* byte 34, spd->data_setup */ 36 unsigned int tdh_ps; /* byte 35, spd->data_hold */ 37 unsigned int trtp_ps; /* byte 38, spd->trtp */ 38 unsigned int tdqsq_max_ps; /* byte 44, spd->tdqsq */ 39 unsigned int tqhs_ps; /* byte 45, spd->tqhs */ 40 41 unsigned int ndimms_present; 42 unsigned int lowest_common_SPD_caslat; 43 unsigned int highest_common_derated_caslat; 44 unsigned int additive_latency; 45 unsigned int all_dimms_burst_lengths_bitmask; 46 unsigned int all_dimms_registered; 47 unsigned int all_dimms_unbuffered; 48 unsigned int all_dimms_ecc_capable; 49 50 unsigned long long total_mem; 51 unsigned long long base_address; 52 53 /* DDR3 RDIMM */ 54 unsigned char rcw[16]; /* Register Control Word 0-15 */ 55 } common_timing_params_t; 56 57 #endif 58