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 32 unsigned int tIS_ps; /* byte 32, spd->ca_setup */ 33 unsigned int tIH_ps; /* byte 33, spd->ca_hold */ 34 unsigned int tDS_ps; /* byte 34, spd->data_setup */ 35 unsigned int tDH_ps; /* byte 35, spd->data_hold */ 36 unsigned int tRTP_ps; /* byte 38, spd->trtp */ 37 unsigned int tDQSQ_max_ps; /* byte 44, spd->tdqsq */ 38 unsigned int tQHS_ps; /* byte 45, spd->tqhs */ 39 40 unsigned int ndimms_present; 41 unsigned int lowest_common_SPD_caslat; 42 unsigned int highest_common_derated_caslat; 43 unsigned int additive_latency; 44 unsigned int all_DIMMs_burst_lengths_bitmask; 45 unsigned int all_DIMMs_registered; 46 unsigned int all_DIMMs_unbuffered; 47 unsigned int all_DIMMs_ECC_capable; 48 49 unsigned long long total_mem; 50 unsigned long long base_address; 51 } common_timing_params_t; 52 53 #endif 54