OpenFPGA/vpr7_x2p/vpr/SRC/fpga_spice/spice/spice_routing.c

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2018-07-26 12:28:21 -05:00
/***********************************/
/* SPICE Modeling for VPR */
/* Xifan TANG, EPFL/LSI */
/***********************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <time.h>
#include <assert.h>
#include <sys/stat.h>
#include <unistd.h>
/* Include vpr structs*/
#include "util.h"
#include "physical_types.h"
#include "vpr_types.h"
#include "globals.h"
#include "rr_graph_util.h"
#include "rr_graph.h"
#include "rr_graph2.h"
#include "vpr_utils.h"
/* Include SPICE support headers*/
#include "linkedlist.h"
#include "fpga_spice_globals.h"
#include "spice_globals.h"
#include "fpga_spice_utils.h"
#include "spice_utils.h"
#include "spice_mux.h"
#include "spice_lut.h"
#include "spice_primitives.h"
#include "fpga_spice_backannotate_utils.h"
#include "spice_routing.h"
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void fprint_routing_chan_subckt(char* subckt_dir,
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int x, int y, t_rr_type chan_type,
int LL_num_rr_nodes, t_rr_node* LL_rr_node,
t_ivec*** LL_rr_node_indices,
int num_segment, t_segment_inf* segments) {
int itrack, iseg, cost_index;
char* chan_prefix = NULL;
int chan_width = 0;
t_rr_node** chan_rr_nodes = NULL;
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FILE* fp = NULL;
char* fname = NULL;
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/* Check */
assert((!(0 > x))&&(!(x > (nx + 1))));
assert((!(0 > y))&&(!(y > (ny + 1))));
assert((CHANX == chan_type)||(CHANY == chan_type));
/* Initial chan_prefix*/
switch (chan_type) {
case CHANX:
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/* Create file handler */
fp = spice_create_one_subckt_file(subckt_dir, "Channel X-direction ", chanx_spice_file_name_prefix, x, y, &fname);
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chan_prefix = "chanx";
fprintf(fp, "***** Subckt for Channel X [%d][%d] *****\n", x, y);
break;
case CHANY:
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/* Create file handler */
fp = spice_create_one_subckt_file(subckt_dir, "Channel Y-direction ", chany_spice_file_name_prefix, x, y, &fname);
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chan_prefix = "chany";
fprintf(fp, "***** Subckt for Channel Y [%d][%d] *****\n", x, y);
break;
default:
vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid Channel type! Should be CHANX or CHANY.\n",
__FILE__, __LINE__);
exit(1);
}
/* Collect rr_nodes for Tracks for chanx[ix][iy] */
chan_rr_nodes = get_chan_rr_nodes(&chan_width, chan_type, x, y,
LL_num_rr_nodes, LL_rr_node, LL_rr_node_indices);
/* Chan subckt definition */
fprintf(fp, ".subckt %s[%d][%d] \n", chan_prefix, x, y);
/* Inputs and outputs,
* Rules for CHANX:
* print left-hand ports(in) first, then right-hand ports(out)
* Rules for CHANX:
* print bottom ports(in) first, then top ports(out)
*/
fprintf(fp, "+ ");
/* LEFT/BOTTOM side port of CHANX/CHANY */
for (itrack = 0; itrack < chan_width; itrack++) {
switch (chan_rr_nodes[itrack]->direction) {
case INC_DIRECTION:
fprintf(fp, "in%d ", itrack); /* INC_DIRECTION: input on the left/bottom side */
break;
case DEC_DIRECTION:
fprintf(fp, "out%d ", itrack); /* DEC_DIRECTION: output on the left/bottom side*/
break;
case BI_DIRECTION:
default:
vpr_printf(TIO_MESSAGE_ERROR, "(File: %s [LINE%d]) Invalid direction of %s[%d][%d]_track[%d]!\n",
__FILE__, __LINE__, chan_prefix, x, y, itrack);
exit(1);
}
}
fprintf(fp, "\n");
fprintf(fp, "+ ");
/* RIGHT/TOP side port of CHANX/CHANY */
for (itrack = 0; itrack < chan_width; itrack++) {
switch (chan_rr_nodes[itrack]->direction) {
case INC_DIRECTION:
fprintf(fp, "out%d ", itrack); /* INC_DIRECTION: output on the right/top side*/
break;
case DEC_DIRECTION:
fprintf(fp, "in%d ", itrack); /* DEC_DIRECTION: input on the right/top side */
break;
case BI_DIRECTION:
default:
vpr_printf(TIO_MESSAGE_ERROR, "(File: %s [LINE%d]) Invalid direction of rr_node %s[%d][%d]_track[%d]!\n",
__FILE__, __LINE__, chan_prefix, x, y, itrack);
exit(1);
}
}
fprintf(fp, "\n");
fprintf(fp, "+ ");
/* Middle point output for connection box inputs */
for (itrack = 0; itrack < chan_width; itrack++) {
fprintf(fp, "mid_out%d ", itrack);
}
fprintf(fp, "\n");
/* End with svdd and sgnd */
fprintf(fp, "+ svdd sgnd\n");
/* Print segments models*/
for (itrack = 0; itrack < chan_width; itrack++) {
cost_index = chan_rr_nodes[itrack]->cost_index;
iseg = rr_indexed_data[cost_index].seg_index;
/* Check */
assert((!(iseg < 0))&&(iseg < num_segment));
assert(NULL != segments[iseg].spice_model);
assert(SPICE_MODEL_CHAN_WIRE == segments[iseg].spice_model->type);
fprintf(fp, "X%s[%d] ", segments[iseg].spice_model->prefix, segments[iseg].spice_model->cnt); /*Call subckt*/
/* Update counter of SPICE model*/
segments[iseg].spice_model->cnt++;
/* Inputs and ouputs*/
fprintf(fp, "in%d out%d mid_out%d ", itrack, itrack, itrack);
/* End with svdd, sgnd and Subckt name*/
fprintf(fp, "svdd sgnd %s_seg%d\n", segments[iseg].spice_model->name, iseg);
}
fprintf(fp, ".eom\n");
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/* Close the file*/
fclose(fp);
/* Add fname to the linked list */
routing_spice_subckt_file_path_head = add_one_subckt_file_name_to_llist(routing_spice_subckt_file_path_head, fname);
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/* Free */
my_free(chan_rr_nodes);
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my_free(fname);
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return;
}
void fprint_grid_side_pin_with_given_index(FILE* fp,
int pin_index, int side,
int x, int y) {
int height/*, class_id*/;
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t_type_ptr type = NULL;
/* Check the file handler*/
if (NULL == fp) {
vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid file handler.\n",
__FILE__, __LINE__);
exit(1);
}
/* Check */
assert((!(0 > x))&&(!(x > (nx + 1))));
assert((!(0 > y))&&(!(y > (ny + 1))));
type = grid[x][y].type;
assert(NULL != type);
assert((!(0 > pin_index))&&(pin_index < type->num_pins));
assert((!(0 > side))&&(!(side > 3)));
/* Output the pins on the side*/
height = get_grid_pin_height(x, y, pin_index);
/* class_id = type->pin_class[pin_index]; */
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if ((1 == type->pinloc[height][side][pin_index])) {
/* Not sure if we need to plus a height */
/* fprintf(fp, "grid[%d][%d]_pin[%d][%d][%d] ", x, y, height, side, pin_index); */
fprintf(fp, "grid[%d][%d]_pin[%d][%d][%d] ", x, y, height, side, pin_index);
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} else {
vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Fail to print a grid pin (x=%d, y=%d, height=%d, side=%d, index=%d)\n",
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__FILE__, __LINE__, x, y, height, side, pin_index);
exit(1);
}
return;
}
void fprint_grid_side_pins(FILE* fp,
t_rr_type pin_type,
int x,
int y,
int side) {
int height, ipin, class_id;
t_type_ptr type = NULL;
enum e_pin_type pin_class_type;
/* Check the file handler*/
if (NULL == fp) {
vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid file handler.\n",
__FILE__, __LINE__);
exit(1);
}
/* Check */
assert((!(0 > x))&&(!(x > (nx + 1))));
assert((!(0 > y))&&(!(y > (ny + 1))));
type = grid[x][y].type;
assert(NULL != type);
/* Assign the type of PIN*/
switch (pin_type) {
case IPIN:
/* case SINK: */
pin_class_type = RECEIVER; /* This is the end of a route path*/
break;
/* case SOURCE: */
case OPIN:
pin_class_type = DRIVER; /* This is the start of a route path */
break;
/* SINK and SOURCE are hypothesis nodes */
default:
vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid pin_type!\n", __FILE__, __LINE__);
exit(1);
}
/* Output the pins on the side*/
for (ipin = 0; ipin < type->num_pins; ipin++) {
height = get_grid_pin_height(x, y, ipin);
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class_id = type->pin_class[ipin];
if ((1 == type->pinloc[height][side][ipin])&&(pin_class_type == type->class_inf[class_id].type)) {
/* Not sure if we need to plus a height */
fprintf(fp, "grid[%d][%d]_pin[%d][%d][%d] ", x, y + height, height, side, ipin);
}
}
return;
}
void fprint_switch_box_chan_port(FILE* fp,
t_sb cur_sb_info,
int chan_side,
t_rr_node* cur_rr_node,
enum PORTS cur_rr_node_direction) {
int index = -1;
t_rr_type chan_rr_node_type;
int chan_rr_node_x, chan_rr_node_y;
/* Check the file handler*/
if (NULL == fp) {
vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid file handler.\n",
__FILE__, __LINE__);
exit(1);
}
/* Get the index in sb_info of cur_rr_node */
index = get_rr_node_index_in_sb_info(cur_rr_node, cur_sb_info, chan_side, cur_rr_node_direction);
/* Make sure this node is included in this sb_info */
assert((-1 != index)&&(-1 != chan_side));
get_chan_rr_node_coorindate_in_sb_info(cur_sb_info, chan_side,
&chan_rr_node_type, &chan_rr_node_x, &chan_rr_node_y);
assert(cur_rr_node->type == chan_rr_node_type);
fprintf(fp, "%s[%d][%d]_%s[%d] ",
convert_chan_type_to_string(chan_rr_node_type),
chan_rr_node_x, chan_rr_node_y,
convert_chan_rr_node_direction_to_string(cur_sb_info.chan_rr_node_direction[chan_side][index]),
cur_rr_node->ptc_num);
return;
}
/* Print a short interconneciton in switch box
* There are two cases should be noticed.
* 1. The actual fan-in of cur_rr_node is 0. In this case,
the cur_rr_node need to be short connected to itself which is on the opposite side of this switch
* 2. The actual fan-in of cur_rr_node is 0. In this case,
* The cur_rr_node need to connected to the drive_rr_node
*/
void fprint_switch_box_short_interc(FILE* fp,
t_sb cur_sb_info,
int chan_side,
t_rr_node* cur_rr_node,
int actual_fan_in,
t_rr_node* drive_rr_node) {
int side, index;
int grid_x, grid_y/*, height*/;
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char* chan_name = NULL;
char* des_chan_port_name = NULL;
/* Check the file handler*/
if (NULL == fp) {
vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid file handler.\n",
__FILE__, __LINE__);
exit(1);
}
/* Check */
assert((!(0 > cur_sb_info.x))&&(!(cur_sb_info.x > (nx + 1))));
assert((!(0 > cur_sb_info.y))&&(!(cur_sb_info.y > (ny + 1))));
assert((0 == actual_fan_in)||(1 == actual_fan_in));
chan_name = convert_chan_type_to_string(cur_rr_node->type);
/* Get the index in sb_info of cur_rr_node */
index = get_rr_node_index_in_sb_info(cur_rr_node, cur_sb_info, chan_side, OUT_PORT);
des_chan_port_name = "out";
fprintf(fp, "R%s[%d][%d]_%s[%d] ",
chan_name, cur_sb_info.x, cur_sb_info.y, des_chan_port_name, cur_rr_node->ptc_num);
/* Check the driver*/
if (0 == actual_fan_in) {
assert(drive_rr_node == cur_rr_node);
} else {
/* drive_rr_node = &(rr_node[cur_rr_node->prev_node]); */
assert(1 == rr_node_drive_switch_box(drive_rr_node, cur_rr_node, cur_sb_info.x, cur_sb_info.y, chan_side));
}
switch (drive_rr_node->type) {
/* case SOURCE: */
case OPIN:
/* Indicate a CLB Outpin*/
/* Search all the sides of a SB, see this drive_rr_node is an INPUT of this SB */
get_rr_node_side_and_index_in_sb_info(drive_rr_node, cur_sb_info, IN_PORT, &side, &index);
/* We need to be sure that drive_rr_node is part of the SB */
assert((-1 != index)&&(-1 != side));
/* Find grid_x and grid_y */
grid_x = drive_rr_node->xlow;
grid_y = drive_rr_node->ylow; /*Plus the offset in function fprint_grid_side_pin_with_given_index */
/*height = grid[grid_x][grid_y].offset;*/
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/* Print a grid pin */
fprint_grid_side_pin_with_given_index(fp, drive_rr_node->ptc_num,
cur_sb_info.opin_rr_node_grid_side[side][index],
grid_x, grid_y);
break;
case CHANX:
case CHANY:
/* Should be an input */
if (cur_rr_node == drive_rr_node) {
/* To be strict, the input should locate on the opposite side.
* Use the else part if this may change in some architecture.
*/
side = get_opposite_side(chan_side);
index = get_rr_node_index_in_sb_info(drive_rr_node, cur_sb_info, side, IN_PORT);
} else {
get_rr_node_side_and_index_in_sb_info(drive_rr_node, cur_sb_info, IN_PORT, &side, &index);
}
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/* We need to be sure that drive_rr_node is part of the SB */
assert((-1 != index)&&(-1 != side));
fprint_switch_box_chan_port(fp, cur_sb_info, side, drive_rr_node, IN_PORT);
break;
default: /* IPIN, SINK are invalid*/
vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid rr_node type! Should be [OPIN|CHANX|CHANY].\n",
__FILE__, __LINE__);
exit(1);
}
/* Output port */
/* fprint_switch_box_chan_port(fp, switch_box_x, switch_box_y, chan_side, cur_rr_node); */
fprint_switch_box_chan_port(fp, cur_sb_info, chan_side, cur_rr_node, OUT_PORT);
/* END */
fprintf(fp, "0\n");
return;
}
/* Print the SPICE netlist of multiplexer that drive this rr_node */
void fprint_switch_box_mux(FILE* fp,
t_sb cur_sb_info,
int chan_side,
t_rr_node* cur_rr_node,
int mux_size,
t_rr_node** drive_rr_nodes,
int switch_index) {
int inode, side, index;
int grid_x, grid_y/*, height*/;
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t_spice_model* spice_model = NULL;
int mux_level, path_id, cur_num_sram, ilevel;
int num_mux_sram_bits = 0;
int* mux_sram_bits = NULL;
char* sram_vdd_port_name = NULL;
/* Check the file handler*/
if (NULL == fp) {
vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid file handler.\n",
__FILE__, __LINE__);
exit(1);
}
/* Check */
assert((!(0 > cur_sb_info.x))&&(!(cur_sb_info.x > (nx + 1))));
assert((!(0 > cur_sb_info.y))&&(!(cur_sb_info.y > (ny + 1))));
/* Check current rr_node is CHANX or CHANY*/
assert((CHANX == cur_rr_node->type)||(CHANY == cur_rr_node->type));
/* Allocate drive_rr_nodes according to the fan-in*/
assert((2 == mux_size)||(2 < mux_size));
/* Get spice model*/
spice_model = switch_inf[switch_index].spice_model;
/* Now it is the time print the SPICE netlist of MUX*/
fprintf(fp, "X%s_size%d[%d] ", spice_model->prefix, mux_size, spice_model->cnt);
/* Global ports */
if (0 < rec_fprint_spice_model_global_ports(fp, spice_model, FALSE)) {
fprintf(fp, "+ ");
}
/* Input ports*/
for (inode = 0; inode < mux_size; inode++) {
switch (drive_rr_nodes[inode]->type) {
/* case SOURCE: */
case OPIN:
/* Indicate a CLB Outpin*/
/* Search all the sides of a SB, see this drive_rr_node is an INPUT of this SB */
get_rr_node_side_and_index_in_sb_info(drive_rr_nodes[inode], cur_sb_info, IN_PORT, &side, &index);
/* We need to be sure that drive_rr_node is part of the SB */
assert((-1 != index)&&(-1 != side));
/* Find grid_x and grid_y */
grid_x = drive_rr_nodes[inode]->xlow;
grid_y = drive_rr_nodes[inode]->ylow; /*Plus the offset in function fprint_grid_side_pin_with_given_index */
/* height = grid[grid_x][grid_y].offset; */
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/* Print a grid pin */
fprint_grid_side_pin_with_given_index(fp, drive_rr_nodes[inode]->ptc_num,
cur_sb_info.opin_rr_node_grid_side[side][index],
grid_x, grid_y);
break;
case CHANX:
case CHANY:
/* Should be an input! */
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get_rr_node_side_and_index_in_sb_info(drive_rr_nodes[inode], cur_sb_info, IN_PORT, &side, &index);
/* We need to be sure that drive_rr_node is part of the SB */
if (!((-1 != index)&&(-1 != side))) {
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assert((-1 != index)&&(-1 != side));
}
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fprint_switch_box_chan_port(fp, cur_sb_info, side, drive_rr_nodes[inode], IN_PORT);
break;
default: /* IPIN, SINK are invalid*/
vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid rr_node type! Should be [OPIN|CHANX|CHANY].\n",
__FILE__, __LINE__);
exit(1);
}
}
/* Output port */
fprint_switch_box_chan_port(fp, cur_sb_info, chan_side, cur_rr_node, OUT_PORT);
/* Configuration bits for this MUX*/
path_id = -1;
for (inode = 0; inode < mux_size; inode++) {
if (drive_rr_nodes[inode] == &(rr_node[cur_rr_node->prev_node])) {
path_id = inode;
break;
}
}
if (!((-1 != path_id)&&(path_id < mux_size))) {
assert((-1 != path_id)&&(path_id < mux_size));
}
switch (spice_model->design_tech_info.structure) {
case SPICE_MODEL_STRUCTURE_TREE:
mux_level = determine_tree_mux_level(mux_size);
num_mux_sram_bits = mux_level;
mux_sram_bits = decode_tree_mux_sram_bits(mux_size, mux_level, path_id);
break;
case SPICE_MODEL_STRUCTURE_ONELEVEL:
mux_level = 1;
/* Special for 2-input MUX */
if (2 == mux_size) {
num_mux_sram_bits = 1;
mux_sram_bits = decode_tree_mux_sram_bits(mux_size, mux_level, path_id);
} else {
num_mux_sram_bits = mux_size;
mux_sram_bits = decode_onelevel_mux_sram_bits(mux_size, mux_level, path_id);
}
break;
case SPICE_MODEL_STRUCTURE_MULTILEVEL:
/* Take care of corner case: MUX size = 2 */
if (2 == mux_size) {
mux_level = 1;
num_mux_sram_bits = 1;
mux_sram_bits = decode_tree_mux_sram_bits(mux_size, 1, path_id);
} else {
mux_level = spice_model->design_tech_info.mux_num_level;
num_mux_sram_bits = determine_num_input_basis_multilevel_mux(mux_size, mux_level) * mux_level;
mux_sram_bits = decode_multilevel_mux_sram_bits(mux_size, mux_level, path_id);
}
break;
default:
vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid structure for spice model (%s)!\n",
__FILE__, __LINE__, spice_model->name);
exit(1);
}
/* Print SRAMs that configure this MUX */
/* Get current counter of mem_bits, bl and wl */
cur_num_sram = get_sram_orgz_info_num_mem_bit(sram_spice_orgz_info);
for (ilevel = 0; ilevel < num_mux_sram_bits; ilevel++) {
assert( (0 == mux_sram_bits[ilevel]) || (1 == mux_sram_bits[ilevel]) );
fprint_spice_sram_one_outport(fp, sram_spice_orgz_info,
cur_num_sram + ilevel, mux_sram_bits[ilevel]);
fprint_spice_sram_one_outport(fp, sram_spice_orgz_info,
cur_num_sram + ilevel, 1 - mux_sram_bits[ilevel]);
}
/* End with svdd and sgnd, subckt name*/
fprintf(fp, "svdd sgnd %s_size%d\n", spice_model->name, mux_size);
/* Print the encoding in SPICE netlist for debugging */
fprintf(fp, "***** SRAM bits for MUX[%d], level=%d, select_path_id=%d. *****\n",
spice_model->cnt, mux_level, path_id);
fprintf(fp, "*****");
for (ilevel = 0; ilevel < num_mux_sram_bits; ilevel++) {
fprintf(fp, "%d", mux_sram_bits[ilevel]);
}
fprintf(fp, "*****\n");
/* Call SRAM subckts*/
/* Give the VDD port name for SRAMs */
sram_vdd_port_name = (char*)my_malloc(sizeof(char)*
(strlen(spice_tb_global_vdd_sb_sram_port_name)
+ 1 ));
sprintf(sram_vdd_port_name, "%s",
spice_tb_global_vdd_sb_sram_port_name);
/* Now Print SRAMs one by one */
for (ilevel = 0; ilevel < num_mux_sram_bits; ilevel++) {
fprint_spice_one_sram_subckt(fp, sram_spice_orgz_info,
spice_model, sram_vdd_port_name);
}
/* Store the configuraion bit to linked-list */
add_sram_conf_bits_to_llist(sram_spice_orgz_info, cur_num_sram,
num_mux_sram_bits, mux_sram_bits);
/* Update spice_model counter */
spice_model->cnt++;
/* Free */
my_free(mux_sram_bits);
my_free(sram_vdd_port_name);
return;
}
void fprint_switch_box_interc(FILE* fp,
t_sb cur_sb_info,
int chan_side,
t_rr_node* cur_rr_node) {
int sb_x, sb_y;
int num_drive_rr_nodes = 0;
t_rr_node** drive_rr_nodes = NULL;
/* Check the file handler*/
if (NULL == fp) {
vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid file handler.\n",
__FILE__, __LINE__);
exit(1);
}
sb_x = cur_sb_info.x;
sb_y = cur_sb_info.y;
/* Check */
assert((!(0 > sb_x))&&(!(sb_x > (nx + 1))));
assert((!(0 > sb_y))&&(!(sb_y > (ny + 1))));
/* Check each num_drive_rr_nodes, see if they appear in the cur_sb_info */
if (TRUE == check_drive_rr_node_imply_short(cur_sb_info, cur_rr_node, chan_side)) {
/* Double check if the interc lies inside a channel wire, that is interc between segments */
assert(1 == is_rr_node_exist_opposite_side_in_sb_info(cur_sb_info, cur_rr_node, chan_side));
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num_drive_rr_nodes = 0;
drive_rr_nodes = NULL;
} else {
num_drive_rr_nodes = cur_rr_node->num_drive_rr_nodes;
drive_rr_nodes = cur_rr_node->drive_rr_nodes;
}
if (0 == num_drive_rr_nodes) {
/* Print a special direct connection*/
fprint_switch_box_short_interc(fp, cur_sb_info, chan_side, cur_rr_node,
num_drive_rr_nodes, cur_rr_node);
} else if (1 == num_drive_rr_nodes) {
/* Print a direct connection*/
fprint_switch_box_short_interc(fp, cur_sb_info, chan_side, cur_rr_node,
num_drive_rr_nodes, drive_rr_nodes[0]);
} else if (1 < num_drive_rr_nodes) {
/* Print the multiplexer, fan_in >= 2 */
fprint_switch_box_mux(fp, cur_sb_info, chan_side, cur_rr_node,
num_drive_rr_nodes, drive_rr_nodes,
cur_rr_node->drive_switches[0]);
} /*Nothing should be done else*/
/* Free */
return;
}
/* Task: Print the subckt of a Switch Box.
* A Switch Box subckt consists of following ports:
* 1. Channel Y [x][y] inputs
* 2. Channel X [x+1][y] inputs
* 3. Channel Y [x][y-1] outputs
* 4. Channel X [x][y] outputs
* 5. Grid[x][y+1] Right side outputs pins
* 6. Grid[x+1][y+1] Left side output pins
* 7. Grid[x+1][y+1] Bottom side output pins
* 8. Grid[x+1][y] Top side output pins
* 9. Grid[x+1][y] Left side output pins
* 10. Grid[x][y] Right side output pins
* 11. Grid[x][y] Top side output pins
* 12. Grid[x][y+1] Bottom side output pins
*
* -------------- --------------
* | | | |
* | Grid | ChanY | Grid |
* | [x][y+1] | [x][y+1] | [x+1][y+1] |
* | | | |
* -------------- --------------
* ----------
* ChanX | Switch | ChanX
* [x][y] | Box | [x+1][y]
* | [x][y] |
* ----------
* -------------- --------------
* | | | |
* | Grid | ChanY | Grid |
* | [x][y] | [x][y] | [x+1][y] |
* | | | |
* -------------- --------------
* For channels chanY with INC_DIRECTION on the top side, they should be marked as outputs
* For channels chanY with DEC_DIRECTION on the top side, they should be marked as inputs
* For channels chanY with INC_DIRECTION on the bottom side, they should be marked as inputs
* For channels chanY with DEC_DIRECTION on the bottom side, they should be marked as outputs
* For channels chanX with INC_DIRECTION on the left side, they should be marked as inputs
* For channels chanX with DEC_DIRECTION on the left side, they should be marked as outputs
* For channels chanX with INC_DIRECTION on the right side, they should be marked as outputs
* For channels chanX with DEC_DIRECTION on the right side, they should be marked as inputs
*/
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void fprint_routing_switch_box_subckt(char* subckt_dir,
t_sb cur_sb_info,
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int LL_num_rr_nodes, t_rr_node* LL_rr_node,
t_ivec*** LL_rr_node_indices) {
int itrack, inode, side, ix, iy, x, y;
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FILE* fp = NULL;
char* fname = NULL;
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/* Check */
assert((!(0 > cur_sb_info.x))&&(!(cur_sb_info.x > (nx + 1))));
assert((!(0 > cur_sb_info.y))&&(!(cur_sb_info.y > (ny + 1))));
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/* Create file handler */
fp = spice_create_one_subckt_file(subckt_dir, "Switch Block ", sb_spice_file_name_prefix, cur_sb_info.x, cur_sb_info.y, &fname);
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x = cur_sb_info.x;
y = cur_sb_info.y;
/* Print the definition of subckt*/
fprintf(fp, "***** Switch Box[%d][%d] Sub-Circuit *****\n", cur_sb_info.x, cur_sb_info.y);
fprintf(fp, ".subckt sb[%d][%d] ", cur_sb_info.x, cur_sb_info.y);
fprintf(fp, "\n");
for (side = 0; side < cur_sb_info.num_sides; side++) {
fprintf(fp, "***** Inputs/outputs of %s side *****\n",convert_side_index_to_string(side));
determine_sb_port_coordinator(cur_sb_info, side, &ix, &iy);
fprintf(fp, "+ ");
for (itrack = 0; itrack < cur_sb_info.chan_width[side]; itrack++) {
switch (cur_sb_info.chan_rr_node_direction[side][itrack]) {
case OUT_PORT:
fprintf(fp, "%s[%d][%d]_out[%d] ",
convert_chan_type_to_string(cur_sb_info.chan_rr_node[side][itrack]->type),
ix, iy, itrack);
break;
case IN_PORT:
fprintf(fp, "%s[%d][%d]_in[%d] ",
convert_chan_type_to_string(cur_sb_info.chan_rr_node[side][itrack]->type),
ix, iy, itrack);
break;
default:
vpr_printf(TIO_MESSAGE_ERROR, "(File: %s [LINE%d]) Invalid direction of port sb[%d][%d] Channel node[%d] track[%d]!\n",
__FILE__, __LINE__, cur_sb_info.x, cur_sb_info.y, side, itrack);
exit(1);
}
}
fprintf(fp, "\n");
fprintf(fp, "+ ");
/* Dump OPINs of adjacent CLBs */
for (inode = 0; inode < cur_sb_info.num_opin_rr_nodes[side]; inode++) {
fprint_grid_side_pin_with_given_index(fp, cur_sb_info.opin_rr_node[side][inode]->ptc_num,
cur_sb_info.opin_rr_node_grid_side[side][inode],
cur_sb_info.opin_rr_node[side][inode]->xlow,
cur_sb_info.opin_rr_node[side][inode]->ylow);
}
fprintf(fp, "\n");
fprintf(fp, "+ ");
}
/* Local Vdd and Gnd */
fprintf(fp, "svdd sgnd\n");
/* Specify the head of scan-chain */
if (SPICE_SRAM_SCAN_CHAIN == sram_spice_orgz_type) {
fprintf(fp, "***** Head of scan-chain *****\n");
fprintf(fp, "Rsb[%d][%d]_sc_head sb[%d][%d]_sc_head %s[%d]->in 0\n",
x, y, x, y, sram_spice_model->prefix, sram_spice_model->cnt);
}
/* Put down all the multiplexers */
for (side = 0; side < cur_sb_info.num_sides; side++) {
fprintf(fp, "***** %s side Multiplexers *****\n",
convert_side_index_to_string(side));
for (itrack = 0; itrack < cur_sb_info.chan_width[side]; itrack++) {
assert((CHANX == cur_sb_info.chan_rr_node[side][itrack]->type)
||(CHANY == cur_sb_info.chan_rr_node[side][itrack]->type));
/* We care INC_DIRECTION tracks at this side*/
if (OUT_PORT != cur_sb_info.chan_rr_node_direction[side][itrack]) {
continue;
}
fprint_switch_box_interc(fp, cur_sb_info, side, cur_sb_info.chan_rr_node[side][itrack]);
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}
}
/* Specify the tail of scan-chain */
if (SPICE_SRAM_SCAN_CHAIN == sram_spice_orgz_type) {
fprintf(fp, "***** Tail of scan-chain *****\n");
fprintf(fp, "Rsb[%d][%d]_sc_tail sb[%d][%d]_sc_tail %s[%d]->in 0\n",
x, y, x, y, sram_spice_model->prefix, sram_spice_model->cnt);
}
fprintf(fp, ".eom\n");
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/* Close the file*/
fclose(fp);
/* Add fname to the linked list */
routing_spice_subckt_file_path_head = add_one_subckt_file_name_to_llist(routing_spice_subckt_file_path_head, fname);
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/* Free */
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my_free(fname);
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return;
}
/* SRC rr_node is the IPIN of a grid.*/
void fprint_connection_box_short_interc(FILE* fp,
t_cb cur_cb_info,
t_rr_node* src_rr_node) {
t_rr_node* drive_rr_node = NULL;
int iedge, check_flag;
int xlow, ylow, height, side, index;
/* Check the file handler*/
if (NULL == fp) {
vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid file handler.\n",
__FILE__, __LINE__);
exit(1);
}
/* Check */
assert((!(0 > cur_cb_info.x))&&(!(cur_cb_info.x > (nx + 1))));
assert((!(0 > cur_cb_info.y))&&(!(cur_cb_info.y > (ny + 1))));
assert(1 == src_rr_node->fan_in);
/* Check the driver*/
drive_rr_node = &(rr_node[src_rr_node->prev_node]);
assert((CHANX == drive_rr_node->type)||(CHANY == drive_rr_node->type));
check_flag = 0;
for (iedge = 0; iedge < drive_rr_node->num_edges; iedge++) {
if (src_rr_node == &(rr_node[drive_rr_node->edges[iedge]])) {
check_flag++;
}
}
assert(1 == check_flag);
xlow = src_rr_node->xlow;
ylow = src_rr_node->ylow;
height = grid[xlow][ylow].offset;
/* Call the zero-resistance model */
switch(cur_cb_info.type) {
case CHANX:
fprintf(fp, "Rcbx[%d][%d]_grid[%d][%d]_pin[%d] ",
cur_cb_info.x, cur_cb_info.y,
xlow, ylow + height, src_rr_node->ptc_num);
break;
case CHANY:
fprintf(fp, "Rcby[%d][%d]_grid[%d][%d]_pin[%d] ",
cur_cb_info.x, cur_cb_info.y,
xlow, ylow + height, src_rr_node->ptc_num);
break;
default:
vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid type of channel!\n", __FILE__, __LINE__);
exit(1);
}
/* Input port*/
assert(IPIN == src_rr_node->type);
/* Search all the sides of a SB, see this drive_rr_node is an INPUT of this SB */
get_rr_node_side_and_index_in_cb_info(src_rr_node, cur_cb_info, OUT_PORT, &side, &index);
/* We need to be sure that drive_rr_node is part of the SB */
assert((-1 != index)&&(-1 != side));
fprint_grid_side_pin_with_given_index(fp, cur_cb_info.ipin_rr_node[side][index]->ptc_num,
cur_cb_info.ipin_rr_node_grid_side[side][index],
xlow, ylow);
/* output port -- > connect to the output at middle point of a channel */
fprintf(fp, "%s[%d][%d]_midout[%d] ",
convert_chan_type_to_string(drive_rr_node->type),
cur_cb_info.x, cur_cb_info.y, drive_rr_node->ptc_num);
/* End */
fprintf(fp, "0\n");
return;
}
void fprint_connection_box_mux(FILE* fp,
t_cb cur_cb_info,
t_rr_node* src_rr_node) {
int mux_size, cur_num_sram, ilevel;
t_rr_node** drive_rr_nodes = NULL;
int inode, mux_level, path_id, switch_index;
t_spice_model* mux_spice_model = NULL;
int num_mux_sram_bits = 0;
int* mux_sram_bits = NULL;
t_rr_type drive_rr_node_type = NUM_RR_TYPES;
int xlow, ylow, /* offset,*/ side, index;
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char* sram_vdd_port_name = NULL;
/* Check the file handler*/
if (NULL == fp) {
vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid file handler.\n",
__FILE__, __LINE__);
exit(1);
}
/* Check */
assert((!(0 > cur_cb_info.x))&&(!(cur_cb_info.x > (nx + 1))));
assert((!(0 > cur_cb_info.y))&&(!(cur_cb_info.y > (ny + 1))));
/* Find drive_rr_nodes*/
mux_size = src_rr_node->num_drive_rr_nodes;
drive_rr_nodes = src_rr_node->drive_rr_nodes;
/* Configuration bits for MUX*/
path_id = -1;
for (inode = 0; inode < mux_size; inode++) {
if (drive_rr_nodes[inode] == &(rr_node[src_rr_node->prev_node])) {
path_id = inode;
break;
}
}
assert((-1 != path_id)&&(path_id < mux_size));
switch_index = src_rr_node->drive_switches[path_id];
mux_spice_model = switch_inf[switch_index].spice_model;
/* Call the MUX SPICE model */
fprintf(fp, "X%s_size%d[%d] ", mux_spice_model->prefix, mux_size, mux_spice_model->cnt);
/* Global ports */
if (0 < rec_fprint_spice_model_global_ports(fp, mux_spice_model, FALSE)) {
fprintf(fp, "+ ");
}
/* Check drive_rr_nodes type, should be the same*/
for (inode = 0; inode < mux_size; inode++) {
if (NUM_RR_TYPES == drive_rr_node_type) {
drive_rr_node_type = drive_rr_nodes[inode]->type;
} else {
assert(drive_rr_node_type == drive_rr_nodes[inode]->type);
assert((CHANX == drive_rr_nodes[inode]->type)||(CHANY == drive_rr_nodes[inode]->type));
}
}
/* input port*/
for (inode = 0; inode < mux_size; inode++) {
fprintf(fp, "%s[%d][%d]_midout[%d] ",
convert_chan_type_to_string(drive_rr_nodes[inode]->type),
cur_cb_info.x, cur_cb_info.y, drive_rr_nodes[inode]->ptc_num);
}
/* output port*/
xlow = src_rr_node->xlow;
ylow = src_rr_node->ylow;
/* offset = grid[xlow][ylow].offset; */
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assert(IPIN == src_rr_node->type);
/* Search all the sides of a CB, see this drive_rr_node is an INPUT of this SB */
get_rr_node_side_and_index_in_cb_info(src_rr_node, cur_cb_info, OUT_PORT, &side, &index);
/* We need to be sure that drive_rr_node is part of the CB */
assert((-1 != index)&&(-1 != side));
fprint_grid_side_pin_with_given_index(fp, cur_cb_info.ipin_rr_node[side][index]->ptc_num,
cur_cb_info.ipin_rr_node_grid_side[side][index],
xlow, ylow);
switch (mux_spice_model->design_tech_info.structure) {
case SPICE_MODEL_STRUCTURE_TREE:
mux_level = determine_tree_mux_level(mux_size);
num_mux_sram_bits = mux_level;
mux_sram_bits = decode_tree_mux_sram_bits(mux_size, mux_level, path_id);
break;
case SPICE_MODEL_STRUCTURE_ONELEVEL:
mux_level = 1;
/* Special for 2-input MUX */
if (2 == mux_size) {
num_mux_sram_bits = 1;
mux_sram_bits = decode_tree_mux_sram_bits(mux_size, mux_level, path_id);
} else {
num_mux_sram_bits = mux_size;
mux_sram_bits = decode_onelevel_mux_sram_bits(mux_size, mux_level, path_id);
}
break;
case SPICE_MODEL_STRUCTURE_MULTILEVEL:
/* Take care of corner case: MUX size = 2 */
if (2 == mux_size) {
num_mux_sram_bits = 1;
mux_sram_bits = decode_tree_mux_sram_bits(mux_size, 1, path_id);
} else {
mux_level = mux_spice_model->design_tech_info.mux_num_level;
num_mux_sram_bits = determine_num_input_basis_multilevel_mux(mux_size, mux_level) * mux_level;
mux_sram_bits = decode_multilevel_mux_sram_bits(mux_size, mux_level, path_id);
}
break;
default:
vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid structure for spice model (%s)!\n",
__FILE__, __LINE__, mux_spice_model->name);
exit(1);
}
/* Print SRAMs that configure this MUX */
/* Get current counter of mem_bits, bl and wl */
cur_num_sram = get_sram_orgz_info_num_mem_bit(sram_spice_orgz_info);
for (ilevel = 0; ilevel < num_mux_sram_bits; ilevel++) {
assert( (0 == mux_sram_bits[ilevel]) || (1 == mux_sram_bits[ilevel]) );
fprint_spice_sram_one_outport(fp, sram_spice_orgz_info,
cur_num_sram + ilevel, mux_sram_bits[ilevel]);
fprint_spice_sram_one_outport(fp, sram_spice_orgz_info,
cur_num_sram + ilevel, 1 - mux_sram_bits[ilevel]);
}
/* End with svdd and sgnd, subckt name*/
fprintf(fp, "svdd sgnd %s_size%d\n", mux_spice_model->name, mux_size);
/* Print the encoding in SPICE netlist for debugging */
fprintf(fp, "***** SRAM bits for MUX[%d], level=%d, select_path_id=%d. *****\n",
mux_spice_model->cnt, mux_level, path_id);
fprintf(fp, "*****");
for (ilevel = 0; ilevel < num_mux_sram_bits; ilevel++) {
fprintf(fp, "%d", mux_sram_bits[ilevel]);
}
fprintf(fp, "*****\n");
/* Call SRAM subckts*/
/* Give the VDD port name for SRAMs */
sram_vdd_port_name = (char*)my_malloc(sizeof(char)*
(strlen(spice_tb_global_vdd_cb_sram_port_name)
+ 1 ));
sprintf(sram_vdd_port_name, "%s",
spice_tb_global_vdd_cb_sram_port_name);
/* Now Print SRAMs one by one */
for (ilevel = 0; ilevel < num_mux_sram_bits; ilevel++) {
fprint_spice_one_sram_subckt(fp, sram_spice_orgz_info,
mux_spice_model, sram_vdd_port_name);
}
/* Store the configuraion bit to linked-list */
add_sram_conf_bits_to_llist(sram_spice_orgz_info, cur_num_sram,
num_mux_sram_bits, mux_sram_bits);
/* Update spice_model counter */
mux_spice_model->cnt++;
/* Free */
my_free(mux_sram_bits);
my_free(sram_vdd_port_name);
return;
}
void fprint_connection_box_interc(FILE* fp,
t_cb cur_cb_info,
t_rr_node* src_rr_node) {
/* Check the file handler*/
if (NULL == fp) {
vpr_printf(TIO_MESSAGE_ERROR,"(File:%s,[LINE%d])Invalid file handler.\n",
__FILE__, __LINE__);
exit(1);
}
/* Check */
assert((!(0 > cur_cb_info.x))&&(!(cur_cb_info.x > (nx + 1))));
assert((!(0 > cur_cb_info.y))&&(!(cur_cb_info.y > (ny + 1))));
if (1 == src_rr_node->fan_in) {
/* Print a direct connection*/
fprint_connection_box_short_interc(fp, cur_cb_info, src_rr_node);
} else if (1 < src_rr_node->fan_in) {
/* Print the multiplexer, fan_in >= 2 */
fprint_connection_box_mux(fp, cur_cb_info, src_rr_node);
} /*Nothing should be done else*/
return;
}
/* Print connection boxes
* Print the sub-circuit of a connection Box (Type: [CHANX|CHANY])
* Actually it is very similiar to switch box but
* the difference is connection boxes connect Grid INPUT Pins to channels
* TODO: merge direct connections into CB
* -------------- --------------
* | | | |
* | Grid | ChanY | Grid |
* | [x][y+1] | [x][y] | [x+1][y+1] |
* | | Connection | |
* -------------- Box_Y[x][y] --------------
* ----------
* ChanX | Switch | ChanX
* [x][y] | Box | [x+1][y]
* Connection | [x][y] | Connection
* Box_X[x][y] ---------- Box_X[x+1][y]
* -------------- --------------
* | | | |
* | Grid | ChanY | Grid |
* | [x][y] | [x][y-1] | [x+1][y] |
* | | Connection | |
* --------------Box_Y[x][y-1]--------------
*/
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void fprint_routing_connection_box_subckt(char* subckt_dir,
t_cb cur_cb_info,
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int LL_num_rr_nodes, t_rr_node* LL_rr_node,
t_ivec*** LL_rr_node_indices) {
int itrack, inode, side, x, y;
int side_cnt = 0;
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FILE* fp = NULL;
char* fname = NULL;
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/* Identify the type of connection box
* Create file handler
*/
switch(cur_cb_info.type) {
case CHANX:
fp = spice_create_one_subckt_file(subckt_dir, "Connection Block X-channel ", cbx_spice_file_name_prefix, cur_cb_info.x, cur_cb_info.y, &fname);
break;
case CHANY:
fp = spice_create_one_subckt_file(subckt_dir, "Connection Block Y-channel ", cby_spice_file_name_prefix, cur_cb_info.x, cur_cb_info.y, &fname);
break;
default:
vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid type of connection box!\n",
__FILE__, __LINE__);
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exit(1);
}
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/* Check */
assert((!(0 > cur_cb_info.x))&&(!(cur_cb_info.x > (nx + 1))));
assert((!(0 > cur_cb_info.y))&&(!(cur_cb_info.y > (ny + 1))));
x = cur_cb_info.x;
y = cur_cb_info.y;
/* Print the definition of subckt*/
fprintf(fp, ".subckt ");
/* Identify the type of connection box */
switch(cur_cb_info.type) {
case CHANX:
fprintf(fp, "cbx[%d][%d] ", cur_cb_info.x, cur_cb_info.y);
break;
case CHANY:
fprintf(fp, "cby[%d][%d] ", cur_cb_info.x, cur_cb_info.y);
break;
default:
vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid type of connection box!\n",
__FILE__, __LINE__);
exit(1);
}
fprintf(fp, "\n");
/* Print the ports of channels*/
/*connect to the mid point of a track*/
/* Get the chan_rr_nodes: Only one side of a cb_info has chan_rr_nodes*/
side_cnt = 0;
for (side = 0; side < cur_cb_info.num_sides; side++) {
/* Bypass side with zero channel width */
if (0 == cur_cb_info.chan_width[side]) {
continue;
}
assert (0 < cur_cb_info.chan_width[side]);
side_cnt++;
for (itrack = 0; itrack < cur_cb_info.chan_width[side]; itrack++) {
fprintf(fp, "+ ");
fprintf(fp, "%s[%d][%d]_midout[%d] ",
convert_chan_type_to_string(cur_cb_info.type),
cur_cb_info.x, cur_cb_info.y, itrack);
fprintf(fp, "\n");
}
}
/*check side_cnt */
assert(1 == side_cnt);
side_cnt = 0;
/* Print the ports of grids*/
/* only check ipin_rr_nodes of cur_cb_info */
for (side = 0; side < cur_cb_info.num_sides; side++) {
/* Bypass side with zero IPINs*/
if (0 == cur_cb_info.num_ipin_rr_nodes[side]) {
continue;
}
side_cnt++;
assert(0 < cur_cb_info.num_ipin_rr_nodes[side]);
assert(NULL != cur_cb_info.ipin_rr_node[side]);
for (inode = 0; inode < cur_cb_info.num_ipin_rr_nodes[side]; inode++) {
fprintf(fp, "+ ");
/* Print each INPUT Pins of a grid */
fprint_grid_side_pin_with_given_index(fp, cur_cb_info.ipin_rr_node[side][inode]->ptc_num,
cur_cb_info.ipin_rr_node_grid_side[side][inode],
cur_cb_info.ipin_rr_node[side][inode]->xlow,
cur_cb_info.ipin_rr_node[side][inode]->ylow);
fprintf(fp, "\n");
}
}
/* Make sure only 2 sides of IPINs are printed */
assert((1 == side_cnt)||(2 == side_cnt));
/* subckt definition ends with svdd and sgnd*/
fprintf(fp, "+ ");
fprintf(fp, "svdd sgnd\n");
/* Specify the head of scan-chain */
if (SPICE_SRAM_SCAN_CHAIN == sram_spice_orgz_type) {
switch(cur_cb_info.type) {
case CHANX:
fprintf(fp, "***** Head of scan-chain *****\n");
fprintf(fp, "Rcbx[%d][%d]_sc_head cbx[%d][%d]_sc_head %s[%d]->in 0\n",
x, y, x, y, sram_spice_model->prefix, sram_spice_model->cnt);
case CHANY:
fprintf(fp, "***** Head of scan-chain *****\n");
fprintf(fp, "Rcby[%d][%d]_sc_head cby[%d][%d]_sc_head %s[%d]->in 0\n",
x, y, x, y, sram_spice_model->prefix, sram_spice_model->cnt);
break;
default:
vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid type of channel!\n", __FILE__, __LINE__);
exit(1);
}
}
/* Print multiplexers or direct interconnect,
* According to the rr_node lists in cbx_info or cby_info
*/
side_cnt = 0;
for (side = 0; side < cur_cb_info.num_sides; side++) {
/* Bypass side with zero IPINs*/
if (0 == cur_cb_info.num_ipin_rr_nodes[side]) {
continue;
}
side_cnt++;
assert(0 < cur_cb_info.num_ipin_rr_nodes[side]);
assert(NULL != cur_cb_info.ipin_rr_node[side]);
for (inode = 0; inode < cur_cb_info.num_ipin_rr_nodes[side]; inode++) {
fprint_connection_box_interc(fp, cur_cb_info, cur_cb_info.ipin_rr_node[side][inode]);
}
}
/* Make sure only 2 sides of IPINs are printed */
assert((1 == side_cnt)||(2 == side_cnt));
/* Specify the tail of scan-chain */
if (SPICE_SRAM_SCAN_CHAIN == sram_spice_orgz_type) {
switch(cur_cb_info.type) {
case CHANX:
fprintf(fp, "***** Tail of scan-chain *****\n");
fprintf(fp, "Rcbx[%d][%d]_sc_tail cbx[%d][%d]_sc_tail %s[%d]->in 0\n",
x, y, x, y, sram_spice_model->prefix, sram_spice_model->cnt);
case CHANY:
fprintf(fp, "***** Tail of scan-chain *****\n");
fprintf(fp, "Rcby[%d][%d]_sc_tail cby[%d][%d]_sc_tail %s[%d]->in 0\n",
x, y, x, y, sram_spice_model->prefix, sram_spice_model->cnt);
break;
default:
vpr_printf(TIO_MESSAGE_ERROR, "(File:%s, [LINE%d])Invalid type of channel!\n", __FILE__, __LINE__);
exit(1);
}
}
fprintf(fp, ".eom\n");
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/* Close the file*/
fclose(fp);
/* Add fname to the linked list */
routing_spice_subckt_file_path_head = add_one_subckt_file_name_to_llist(routing_spice_subckt_file_path_head, fname);
/* Free */
my_free(fname);
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return;
}
/* Top Function*/
/* Build the routing resource SPICE sub-circuits*/
void generate_spice_routing_resources(char* subckt_dir,
t_arch arch,
t_det_routing_arch* routing_arch,
int LL_num_rr_nodes, t_rr_node* LL_rr_node,
t_ivec*** LL_rr_node_indices) {
int ix, iy;
assert(UNI_DIRECTIONAL == routing_arch->directionality);
/* Two major tasks:
* 1. Generate sub-circuits for Routing Channels
* 2. Generate sub-circuits for Switch Boxes
*/
/* Now: First task: Routing channels
* Sub-circuits are named as chanx[ix][iy] or chany[ix][iy] for horizontal or vertical channels
* each channels consist of a number of routing tracks. (Actually they are metal wires)
* We only support single-driver routing architecture.
* The direction is defined as INC_DIRECTION ------> and DEC_DIRECTION <-------- for chanx
* The direction is defined as INC_DIRECTION /|\ and DEC_DIRECTION | for chany
* | |
* | |
* | \|/
* For INC_DIRECTION chanx, the inputs are at the left of channels, the outputs are at the right of channels
* For DEC_DIRECTION chanx, the inputs are at the right of channels, the outputs are at the left of channels
* For INC_DIRECTION chany, the inputs are at the bottom of channels, the outputs are at the top of channels
* For DEC_DIRECTION chany, the inputs are at the top of channels, the outputs are at the bottom of channels
*/
/* X - channels [1...nx][0..ny]*/
vpr_printf(TIO_MESSAGE_INFO, "Writing X-direction Channels...\n");
for (iy = 0; iy < (ny + 1); iy++) {
for (ix = 1; ix < (nx + 1); ix++) {
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fprint_routing_chan_subckt(subckt_dir, ix, iy, CHANX,
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LL_num_rr_nodes, LL_rr_node, LL_rr_node_indices,
arch.num_segments, arch.Segments);
}
}
/* Y - channels [1...ny][0..nx]*/
vpr_printf(TIO_MESSAGE_INFO, "Writing Y-direction Channels...\n");
for (ix = 0; ix < (nx + 1); ix++) {
for (iy = 1; iy < (ny + 1); iy++) {
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fprint_routing_chan_subckt(subckt_dir, ix, iy, CHANY,
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LL_num_rr_nodes, LL_rr_node, LL_rr_node_indices,
arch.num_segments, arch.Segments);
}
}
/* Switch Boxes*/
vpr_printf(TIO_MESSAGE_INFO, "Writing Switch Boxes...\n");
for (ix = 0; ix < (nx + 1); ix++) {
for (iy = 0; iy < (ny + 1); iy++) {
update_spice_models_routing_index_low(ix, iy, SOURCE, arch.spice->num_spice_model, arch.spice->spice_models);
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fprint_routing_switch_box_subckt(subckt_dir, sb_info[ix][iy],
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LL_num_rr_nodes, LL_rr_node, LL_rr_node_indices);
update_spice_models_routing_index_high(ix, iy, SOURCE, arch.spice->num_spice_model, arch.spice->spice_models);
}
}
/* Connection Boxes */
vpr_printf(TIO_MESSAGE_INFO, "Writing Connection Boxes...\n");
/* X - channels [1...nx][0..ny]*/
for (iy = 0; iy < (ny + 1); iy++) {
for (ix = 1; ix < (nx + 1); ix++) {
update_spice_models_routing_index_low(ix, iy, CHANX, arch.spice->num_spice_model, arch.spice->spice_models);
/* Check if this cby_info exists, it may be covered by a heterogenous block */
if ((TRUE == is_cb_exist(CHANX, ix, iy))
&&(0 < count_cb_info_num_ipin_rr_nodes(cbx_info[ix][iy]))) {
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fprint_routing_connection_box_subckt(subckt_dir, cbx_info[ix][iy],
LL_num_rr_nodes, LL_rr_node, LL_rr_node_indices);
}
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update_spice_models_routing_index_high(ix, iy, CHANX, arch.spice->num_spice_model, arch.spice->spice_models);
}
}
/* Y - channels [1...ny][0..nx]*/
for (ix = 0; ix < (nx + 1); ix++) {
for (iy = 1; iy < (ny + 1); iy++) {
update_spice_models_routing_index_low(ix, iy, CHANY, arch.spice->num_spice_model, arch.spice->spice_models);
/* Check if this cby_info exists, it may be covered by a heterogenous block */
if ((TRUE == is_cb_exist(CHANY, ix, iy))
&&(0 < count_cb_info_num_ipin_rr_nodes(cby_info[ix][iy]))) {
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fprint_routing_connection_box_subckt(subckt_dir, cby_info[ix][iy],
LL_num_rr_nodes, LL_rr_node, LL_rr_node_indices);
}
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update_spice_models_routing_index_high(ix, iy, CHANY, arch.spice->num_spice_model, arch.spice->spice_models);
}
}
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/* Output a header file for all the routing blocks */
vpr_printf(TIO_MESSAGE_INFO,"Generating header file for routing submodules...\n");
spice_print_subckt_header_file(routing_spice_subckt_file_path_head,
subckt_dir,
routing_spice_file_name);
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return;
}