273 lines
10 KiB
C
273 lines
10 KiB
C
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/***********************************/
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/* SPICE Modeling for VPR */
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/* Xifan TANG, EPFL/LSI */
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/***********************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <time.h>
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#include <assert.h>
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#include <sys/stat.h>
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#include <unistd.h>
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/* Include vpr structs*/
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#include "util.h"
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#include "physical_types.h"
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#include "vpr_types.h"
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#include "globals.h"
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#include "rr_graph.h"
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#include "vpr_utils.h"
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#include "route_common.h"
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/* Include spice support headers*/
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#include "linkedlist.h"
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#include "fpga_x2p_globals.h"
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#include "fpga_x2p_types.h"
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#include "spice_globals.h"
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#include "fpga_x2p_utils.h"
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#include "spice_utils.h"
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#include "spice_mux.h"
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#include "spice_pbtypes.h"
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#include "spice_subckt.h"
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/* For mrFPGA */
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#ifdef MRFPGA_H
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#include "mrfpga_globals.h"
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#endif
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/***** Subroutines Declarations *****/
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static
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void fprint_spice_meas_header(char* meas_file_name,
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t_spice_meas_params spice_meas_params);
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static
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void fprint_spice_stimulate_header(char* stimulate_file_name,
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t_spice_stimulate_params spice_stimulate_params,
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float vpr_clock_period,
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int num_clock);
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/***** Subroutines *****/
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/* Print SPICE Netlists header*/
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/* Print parameters for measurements */
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static
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void fprint_spice_meas_header(char* meas_file_name,
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t_spice_meas_params spice_meas_params) {
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FILE* fp = NULL;
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/* Check */
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assert(NULL != meas_file_name);
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/* Create File */
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fp = fopen(meas_file_name, "w");
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if (NULL == fp) {
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vpr_printf(TIO_MESSAGE_ERROR, "(File:%s,[LINE%d])Failure in create measure header file %s!\n",
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__FILE__, __LINE__, meas_file_name);
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exit(1);
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}
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/* Print parameters */
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fprint_spice_head(fp, "Parameters for measurement");
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fprintf(fp, "***** Parameters For Slew Measurement *****\n");
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fprintf(fp, "***** Rising Edge *****\n");
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fprintf(fp, ".param slew_upper_thres_pct_rise=%g\n", spice_meas_params.slew_upper_thres_pct_rise);
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fprintf(fp, ".param slew_lower_thres_pct_rise=%g\n", spice_meas_params.slew_lower_thres_pct_rise);
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fprintf(fp, "***** Falling Edge *****\n");
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fprintf(fp, ".param slew_upper_thres_pct_fall=%g\n", spice_meas_params.slew_upper_thres_pct_fall);
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fprintf(fp, ".param slew_lower_thres_pct_fall=%g\n", spice_meas_params.slew_lower_thres_pct_fall);
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fprintf(fp, "***** Parameters For Delay Measurement *****\n");
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fprintf(fp, "***** Rising Edge *****\n");
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fprintf(fp, ".param input_thres_pct_rise=%g\n", spice_meas_params.input_thres_pct_rise);
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fprintf(fp, ".param output_thres_pct_rise=%g\n", spice_meas_params.output_thres_pct_rise);
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fprintf(fp, "***** Falling Edge *****\n");
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fprintf(fp, ".param input_thres_pct_fall=%g\n", spice_meas_params.input_thres_pct_fall);
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fprintf(fp, ".param output_thres_pct_fall=%g\n", spice_meas_params.output_thres_pct_fall);
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/* Close File */
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fclose(fp);
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return;
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}
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/* Print parameters for measurements */
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static
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void fprint_spice_stimulate_header(char* stimulate_file_name,
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t_spice_stimulate_params spice_stimulate_params,
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float vpr_clock_period,
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int num_clock) {
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FILE* fp = NULL;
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float sim_clock_freq = 0.;
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float sim_clock_period = 0.;
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/* Check */
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assert(NULL != stimulate_file_name);
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/* Create File */
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fp = fopen(stimulate_file_name, "w");
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if (NULL == fp) {
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vpr_printf(TIO_MESSAGE_ERROR, "(File:%s,[LINE%d])Failure in create stimulate header file %s!\n",
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__FILE__, __LINE__, stimulate_file_name);
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exit(1);
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}
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fprint_spice_head(fp, "Parameters for Stimulations");
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/* if estimated clock frequency from VPR is 0.
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* this is a combinational circuit, clock frequency will never be used
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*/
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/* if the clock frequency is not specified in architecture file,
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* We define the clock frequency with estimated value and slack
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*/
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fprintf(fp, "***** Frequency *****\n");
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sim_clock_freq = spice_stimulate_params.op_clock_freq;
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/* Simulate clock frequency should be larger than 0 !*/
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assert(0. < sim_clock_freq); /*TODO: check this earlier!!! */
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/* vpr_printf(TIO_MESSAGE_INFO, "Use Clock freqency %.2f [MHz] in SPICE simulation.\n", sim_clock_freq/1e6); */
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fprintf(fp, ".param clock_period=%g\n", 1. / sim_clock_freq);
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sim_clock_period = 1./sim_clock_freq;
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/* Print parameters */
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fprintf(fp, "***** Parameters For Input Stimulations *****\n");
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switch (spice_stimulate_params.input_slew_rise_type) {
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case SPICE_ABS:
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if (sim_clock_period < (spice_stimulate_params.input_slew_rise_time
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+ spice_stimulate_params.input_slew_fall_time)) {
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vpr_printf(TIO_MESSAGE_ERROR, "(File:%s,[LINE%d])Invalid input_slew_rise_time(%.2g), should be smaller than clock period(%.2g)!\n",
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__FILE__, __LINE__, spice_stimulate_params.input_slew_rise_time, sim_clock_period);
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exit(1);
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}
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fprintf(fp, ".param input_slew_pct_rise='%g/clock_period'\n", spice_stimulate_params.input_slew_rise_time);
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break;
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case SPICE_FRAC:
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fprintf(fp, ".param input_slew_pct_rise='%g'\n", spice_stimulate_params.input_slew_rise_time);
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break;
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default:
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vpr_printf(TIO_MESSAGE_ERROR, "(File:%s,[LINE%d])Invalid input_slew_rise_type!\n",
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__FILE__, __LINE__);
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exit(1);
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}
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switch (spice_stimulate_params.input_slew_fall_type) {
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case SPICE_ABS:
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if (sim_clock_period < (spice_stimulate_params.input_slew_rise_time
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+ spice_stimulate_params.input_slew_fall_time)) {
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vpr_printf(TIO_MESSAGE_ERROR, "(File:%s,[LINE%d])Invalid input_slew_fall_time(%.2g), should be smaller than clock period(%.2g)!\n",
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__FILE__, __LINE__, spice_stimulate_params.input_slew_fall_time, sim_clock_period);
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exit(1);
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}
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fprintf(fp, ".param input_slew_pct_fall='%g/clock_period'\n", spice_stimulate_params.input_slew_fall_time);
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break;
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case SPICE_FRAC:
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fprintf(fp, ".param input_slew_pct_fall='%g'\n", spice_stimulate_params.input_slew_fall_time);
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break;
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default:
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vpr_printf(TIO_MESSAGE_ERROR, "(File:%s,[LINE%d])Invalid input_slew_fall_type!\n",
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__FILE__, __LINE__);
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exit(1);
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}
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fprintf(fp, "***** Parameters For Clock Stimulations *****\n");
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fprintf(fp, "***** Slew *****\n");
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switch (spice_stimulate_params.clock_slew_rise_type) {
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case SPICE_ABS:
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if (sim_clock_period < (spice_stimulate_params.clock_slew_rise_time
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+ spice_stimulate_params.clock_slew_fall_time)) {
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vpr_printf(TIO_MESSAGE_ERROR, "(File:%s,[LINE%d])Invalid clock_slew_rise_time(%.2g)+clock_slew_fall_time(%.2g), should be smaller than clock period(%.2g)!\n",
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__FILE__, __LINE__, spice_stimulate_params.clock_slew_rise_time,spice_stimulate_params.clock_slew_fall_time, sim_clock_period);
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exit(1);
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}
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fprintf(fp, ".param clock_slew_pct_rise='%g/clock_period'\n", spice_stimulate_params.clock_slew_rise_time);
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break;
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case SPICE_FRAC:
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fprintf(fp, ".param clock_slew_pct_rise='%g'\n", spice_stimulate_params.clock_slew_rise_time);
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break;
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default:
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vpr_printf(TIO_MESSAGE_ERROR, "(File:%s,[LINE%d])Invalid clock_slew_rise_type!\n",
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__FILE__, __LINE__);
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exit(1);
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}
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switch (spice_stimulate_params.clock_slew_fall_type) {
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case SPICE_ABS:
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if (sim_clock_period < (spice_stimulate_params.clock_slew_rise_time
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+ spice_stimulate_params.clock_slew_fall_time)) {
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vpr_printf(TIO_MESSAGE_ERROR, "(File:%s,[LINE%d])Invalid clock_slew_rise_time(%.2g)+clock_slew_fall_time(%.2g), should be smaller than clock period(%.2g)!\n",
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__FILE__, __LINE__, spice_stimulate_params.clock_slew_rise_time,spice_stimulate_params.clock_slew_fall_time, sim_clock_period);
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exit(1);
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}
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fprintf(fp, ".param clock_slew_pct_fall='%g/clock_period'\n", spice_stimulate_params.clock_slew_fall_time);
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break;
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case SPICE_FRAC:
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fprintf(fp, ".param clock_slew_pct_fall='%g'\n", spice_stimulate_params.clock_slew_fall_time);
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break;
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default:
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vpr_printf(TIO_MESSAGE_ERROR, "(File:%s,[LINE%d])Invalid input_slew_fall_type!\n",
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__FILE__, __LINE__);
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exit(1);
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}
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fclose(fp);
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return;
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}
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/* Print parameters for circuit designs */
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static
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void fprint_spice_design_param_header(char* design_param_file_name,
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t_spice spice) {
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FILE* fp = NULL;
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/* Check */
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assert(NULL != design_param_file_name);
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/* Create File */
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fp = fopen(design_param_file_name, "w");
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if (NULL == fp) {
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vpr_printf(TIO_MESSAGE_ERROR, "(File:%s,[LINE%d])Failure in create design parameter header file %s!\n",
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__FILE__, __LINE__, design_param_file_name);
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exit(1);
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}
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fprint_spice_head(fp, "Parameters for Circuit Designs");
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fprint_tech_lib(fp,
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spice.spice_params.mc_params.cmos_variation,
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spice.tech_lib);
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/* For transistors */
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fprint_spice_circuit_param(fp,
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spice.spice_params.mc_params,
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spice.num_spice_model,
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spice.spice_models);
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fclose(fp);
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return;
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}
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void spice_print_headers(char* include_dir_path,
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float vpr_clock_period,
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int num_clock,
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t_spice spice) {
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char* formatted_include_dir_path = format_dir_path(include_dir_path);
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char* meas_header_file_path = NULL;
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char* stimu_header_file_path = NULL;
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char* design_param_header_file_path = NULL;
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/* measurement header file */
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meas_header_file_path = my_strcat(formatted_include_dir_path, meas_header_file_name);
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fprint_spice_meas_header(meas_header_file_path, spice.spice_params.meas_params);
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/* stimulate header file */
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stimu_header_file_path = my_strcat(formatted_include_dir_path, stimu_header_file_name);
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fprint_spice_stimulate_header(stimu_header_file_path, spice.spice_params.stimulate_params, vpr_clock_period, num_clock);
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/* design parameter header file */
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design_param_header_file_path = my_strcat(formatted_include_dir_path, design_param_header_file_name);
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fprint_spice_design_param_header(design_param_header_file_path, spice);
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return;
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}
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