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geom.cc
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/*************************************************************************
*
* Copyright (c) 2019 Rajit Manohar
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
**************************************************************************
*/
#include <stdio.h>
#include <string.h>
#include <common/list.h>
#include <act/act.h>
#include <act/passes.h>
#include <act/passes/netlist.h>
#include <act/tech.h>
#include <common/qops.h>
#include "geom.h"
bool Layout::_initdone = false;
double Layout::_leak_adjust = 0.0;
void Layout::Init()
{
if (_initdone) return;
_initdone = true;
if (!Technology::T) {
Technology::Init ();
}
if (config_exists ("net.leakage_adjust")) {
_leak_adjust = config_get_real ("net.leakage_adjust");
}
else {
_leak_adjust = 0;
}
}
#define LMAP_VIA 0
#define LMAP_DIFF 1
#define LMAP_WDIFF 2
#define LMAP_FET 3
struct layermap {
Layer *l;
int etype; /* n/p, if needed */
int flavor; /* flavor */
unsigned int lcase:2; // LMAP_<what> is it?
};
Layout::Layout(netlist_t *_n)
{
struct layermap *lp;
hash_bucket_t *b;
Layout::Init();
/*-- create all the layers --*/
Assert (Technology::T, "Initialization error");
N = _n;
_readrect = false;
lmap = hash_new (8);
/* 1. base layer for diff, well, fets */
base = new Layer (Technology::T->poly, _n);
/* 2. Also has #flavors*6 materials! */
int sz = config_get_table_size ("act.dev_flavors");
Assert (sz > 0, "Hmm");
nflavors = sz;
nmetals = Technology::T->nmetals;
base->allocOther (sz*6);
for (int i=0; i < sz; i++) {
base->setOther (TOTAL_OFFSET(i, EDGE_NFET, FET_OFFSET),
Technology::T->fet[EDGE_NFET][i]);
NEW (lp, struct layermap);
lp->l = base;
lp->etype = EDGE_NFET;
lp->flavor = i;
lp->lcase = LMAP_FET;
b = hash_add (lmap, Technology::T->fet[EDGE_NFET][i]->getName());
b->v = lp;
base->setOther (TOTAL_OFFSET(i, EDGE_PFET, FET_OFFSET),
Technology::T->fet[EDGE_PFET][i]);
NEW (lp, struct layermap);
lp->l = base;
lp->etype = EDGE_PFET;
lp->flavor = i;
lp->lcase = LMAP_FET;
b = hash_add (lmap, Technology::T->fet[EDGE_PFET][i]->getName());
b->v = lp;
base->setOther (TOTAL_OFFSET(i, EDGE_NFET, DIFF_OFFSET),
Technology::T->diff[EDGE_NFET][i]);
NEW (lp, struct layermap);
lp->l = base;
lp->etype = EDGE_NFET;
lp->flavor = i;
lp->lcase = LMAP_DIFF;
b = hash_add (lmap, Technology::T->diff[EDGE_NFET][i]->getName());
b->v = lp;
/* add via */
if (Technology::T->diff[EDGE_NFET][i]->getUpC()) {
if (!hash_lookup (lmap, Technology::T->diff[EDGE_NFET][i]->getUpC()->getName())) {
NEW (lp, struct layermap);
lp->l = base;
lp->etype = EDGE_NFET;
lp->flavor = i;
lp->lcase = LMAP_VIA;
b = hash_add (lmap, Technology::T->diff[EDGE_NFET][i]->getUpC()->getName());
b->v = lp;
}
}
base->setOther (TOTAL_OFFSET(i, EDGE_PFET, DIFF_OFFSET),
Technology::T->diff[EDGE_PFET][i]);
NEW (lp, struct layermap);
lp->l = base;
lp->etype = EDGE_PFET;
lp->flavor = i;
lp->lcase = LMAP_DIFF;
b = hash_add (lmap, Technology::T->diff[EDGE_PFET][i]->getName());
b->v = lp;
if (Technology::T->diff[EDGE_PFET][i]->getUpC()) {
if (!hash_lookup (lmap,
Technology::T->diff[EDGE_PFET][i]->getUpC()->getName())) {
NEW (lp, struct layermap);
lp->l = base;
lp->etype = EDGE_PFET;
lp->flavor = i;
lp->lcase = LMAP_VIA;
b = hash_add (lmap, Technology::T->diff[EDGE_PFET][i]->getUpC()->getName());
b->v = lp;
}
}
base->setOther (TOTAL_OFFSET(i, EDGE_NFET, WDIFF_OFFSET),
Technology::T->welldiff[EDGE_NFET][i]);
if (Technology::T->welldiff[EDGE_NFET][i]) {
NEW (lp, struct layermap);
lp->l = base;
lp->etype = EDGE_NFET;
lp->flavor = i;
lp->lcase = LMAP_WDIFF;
b = hash_add (lmap, Technology::T->welldiff[EDGE_NFET][i]->getName());
b->v = lp;
if (Technology::T->welldiff[EDGE_NFET][i]->getUpC()) {
if (!hash_lookup (lmap, Technology::T->welldiff[EDGE_NFET][i]->getUpC()->getName())) {
NEW (lp, struct layermap);
lp->l = base;
lp->etype = EDGE_NFET;
lp->flavor = i;
lp->lcase = LMAP_VIA;
b = hash_add (lmap, Technology::T->welldiff[EDGE_NFET][i]->getUpC()->getName());
b->v = lp;
}
}
}
base->setOther (TOTAL_OFFSET(i, EDGE_PFET, WDIFF_OFFSET),
Technology::T->welldiff[EDGE_PFET][i]);
if (Technology::T->welldiff[EDGE_PFET][i]) {
NEW (lp, struct layermap);
lp->l = base;
lp->etype = EDGE_PFET;
lp->flavor = i;
lp->lcase = LMAP_WDIFF;
b = hash_add (lmap, Technology::T->welldiff[EDGE_PFET][i]->getName());
b->v = lp;
if (Technology::T->welldiff[EDGE_PFET][i]->getUpC()) {
if (!hash_lookup (lmap, Technology::T->welldiff[EDGE_PFET][i]->getUpC()->getName())) {
NEW (lp, struct layermap);
lp->l = base;
lp->etype = EDGE_PFET;
lp->flavor = i;
lp->lcase = LMAP_VIA;
b = hash_add (lmap, Technology::T->welldiff[EDGE_PFET][i]->getUpC()->getName());
b->v = lp;
}
}
}
}
Layer *prev = base;
if (!hash_lookup (lmap, Technology::T->poly->getUpC()->getName())) {
NEW (lp, struct layermap);
lp->l = base;
lp->etype = -1;
lp->flavor = 0;
lp->lcase = LMAP_VIA;
b = hash_add (lmap, Technology::T->poly->getUpC()->getName());
b->v = lp;
}
MALLOC (metals, Layer *, Technology::T->nmetals);
/* create metal layers */
for (int i=0; i < Technology::T->nmetals; i++) {
metals[i] = new Layer (Technology::T->metal[i], _n);
metals[i]->setDownLink (prev);
prev = metals[i];
if (Technology::T->metal[i]->getUpC()) {
NEW (lp, struct layermap);
lp->l = metals[i];
lp->etype = -1;
lp->flavor = 0;
lp->lcase = LMAP_VIA;
b = hash_add (lmap, Technology::T->metal[i]->getUpC()->getName());
b->v = lp;
}
}
_rect_inpath = NULL;
if (config_exists ("lefdef.rect_inpath")) {
_rect_inpath = path_init ();
path_add (_rect_inpath, config_get_string ("lefdef.rect_inpath"));
}
_le = new LayoutEdgeAttrib();
}
Layout::~Layout()
{
Layer *t, *l;
t = base;
while (t) {
l = t;
t = t->up;
delete l;
}
hash_free (lmap);
if (_rect_inpath) {
path_free (_rect_inpath);
_rect_inpath = NULL;
}
if (_le) {
delete _le;
}
}
FetMat *Layout::getFet (int type, int flavor)
{
FetMat *f;
Material *m;
m = base->other[TOTAL_OFFSET(flavor,type,FET_OFFSET)];
f = Technology::T->fet[type][flavor];
Assert (f == m, "Eh?");
return f;
}
DiffMat *Layout::getDiff (int type, int flavor)
{
DiffMat *d;
Material *m;
m = base->other[TOTAL_OFFSET(flavor,type,DIFF_OFFSET)];
d = Technology::T->diff[type][flavor];
Assert (d == m, "Eh?");
return d;
}
WellMat *Layout::getWell (int type, int flavor)
{
return Technology::T->well[type][flavor];
}
PolyMat *Layout::getPoly ()
{
return Technology::T->poly;
}
int Layout::DrawPoly (long llx, long lly, unsigned long wx, unsigned long wy,
void *net)
{
return base->Draw (llx, lly, wx, wy, net, 0);
}
int Layout::DrawDiff (int flavor /* fet flavor */, int type /* n or p */,
long llx, long lly, unsigned long wx, unsigned long wy,
void *net)
{
int attr = 1 + TOTAL_OFFSET (flavor, type, DIFF_OFFSET);
if (flavor < 0 || flavor >= nflavors) return 0;
#if 0
Assert (TILE_ATTR_TO_TYPE (attr) == type, "what?");
Assert (TILE_ATTR_TO_OFF (attr) == DIFF_OFFSET, "What?");
Assert (TILE_ATTR_TO_FLAV (attr) == flavor, "What?");
#endif
return base->Draw (llx, lly, wx, wy, net, attr);
}
int Layout::DrawWellDiff (int flavor /* fet flavor */, int type /* n or p */,
long llx, long lly, unsigned long wx, unsigned long wy,
void *net)
{
int attr = 1 + TOTAL_OFFSET (flavor, type, WDIFF_OFFSET);
if (flavor < 0 || flavor >= nflavors) return 0;
#if 0
Assert (TILE_ATTR_TO_TYPE (attr) == type, "what?");
Assert (TILE_ATTR_TO_OFF (attr) == WDIFF_OFFSET, "What?");
Assert (TILE_ATTR_TO_FLAV (attr) == flavor, "What?");
#endif
return base->Draw (llx, lly, wx, wy, net, attr);
}
int Layout::DrawFet (int flavor, int type,
long llx, long lly, unsigned long wx, unsigned long wy,
void *net)
{
int attr = 1 + TOTAL_OFFSET (flavor, type, FET_OFFSET);
if (flavor < 0 || flavor >= nflavors) return 0;
#if 0
Assert (TILE_ATTR_TO_TYPE (attr) == type, "what?");
Assert (TILE_ATTR_TO_OFF (attr) == FET_OFFSET, "What?");
Assert (TILE_ATTR_TO_FLAV (attr) == flavor, "What?");
#endif
return base->Draw (llx, lly, wx, wy, net, attr);
}
int Layout::DrawDiffBBox (int flavor, int type,
long llx, long lly, unsigned long wx, unsigned long wy)
{
if (flavor < 0 || flavor >= nflavors) return 0;
return base->DrawVirt (flavor, type, llx, lly, wx, wy);
}
/* 0 = metal1, etc. */
int Layout::DrawMetal (int num, long llx, long lly, unsigned long wx, unsigned long wy, void *net)
{
if (num < 0 || num >= nmetals) return 0;
/* XXX: colors? */
return metals[num]->Draw (llx, lly, wx, wy, net, 0);
}
int Layout::DrawMetalPin (int num, long llx, long lly, unsigned long wx, unsigned long wy, void *net, int dir)
{
/* XXX: colors? */
int attr = 0;
if (num < 0 || num >= nmetals) return 0;
TILE_ATTR_MKPIN (attr);
if (dir) {
TILE_ATTR_MKOUTPUT (attr);
}
return metals[num]->Draw (llx, lly, wx, wy, net, attr);
}
/* 0 = base to metal1, 1 = metal1 to metal2, etc. */
int Layout::DrawVia (int num, long llx, long lly, unsigned long wx, unsigned long wy)
{
if (num < 0 || num > nmetals) return 0;
/* XXX: colors? */
if (num == 0) {
return base->drawVia (llx, lly, wx, wy, 0);
}
else {
return metals[num-1]->drawVia (llx, lly, wx, wy, 0);
}
}
void Layout::PrintRect (FILE *fp, TransformMat *t)
{
base->PrintRect (fp, t);
for (int i=0; i < nmetals; i++) {
metals[i]->PrintRect (fp, t);
}
if (!_rbox.empty()) {
fprintf (fp, "sbox %ld %ld %ld %ld\n", _rbox.llx(),
_rbox.lly(), _rbox.urx()+1, _rbox.ury()+1);
}
if (!_abutbox.empty()) {
fprintf (fp, "rect # $align %ld %ld %ld %ld\n", _abutbox.llx(),
_abutbox.lly(), _abutbox.urx()+1, _abutbox.ury()+1);
}
LayoutEdgeAttrib::attrib_list *l;
long x, y;
if (_abutbox.empty()) {
x = 0;
y = 0;
}
else {
x = _abutbox.llx();
y = _abutbox.lly();
}
if (_le) {
for (l = _le->left(); l; l = l->next) {
fprintf (fp, "rect $l:%s $align %ld %ld %ld %ld\n",
l->name, x, l->offset, x, l->offset);
}
for (l = _le->right(); l; l = l->next) {
fprintf (fp, "rect $r:%s $align %ld %ld %ld %ld\n",
l->name, x, l->offset, x, l->offset);
}
for (l = _le->top(); l; l = l->next) {
fprintf (fp, "rect $t:%s $align %ld %ld %ld %ld\n",
l->name, l->offset, y, l->offset, y);
}
for (l = _le->bot(); l; l = l->next) {
fprintf (fp, "rect $b:%s $align %ld %ld %ld %ld\n",
l->name, l->offset, y, l->offset, y);
}
}
}
void Layout::markPins ()
{
if (!N || !N->bN) return;
for (int i=0; i < A_LEN (N->bN->ports); i++) {
node_t *n;
if (N->bN->ports[i].omit) continue;
n = ActNetlistPass::connection_to_node (N, N->bN->ports[i].c);
#if 0
printf ("%cpin: ", N->bN->ports[i].input ? 'i' : 'o');
ActNetlistPass::emit_node (N, stdout, n, NULL, NULL, 0);
printf ("\n");
#endif
for (int j=0; j < nmetals; j++) {
metals[j]->markPins (n, N->bN->ports[i].input);
}
}
}
void Layout::ReadRect (Process *p, int raw_mode)
{
char cname[10240];
int len;
if (!p) {
snprintf (cname, 10240, "toplevel");
}
else {
ActNamespace::Act()->msnprintfproc (cname, 10240, p);
}
len = strlen (cname);
snprintf (cname + len, 10240 - len, ".rect");
FILE *fp;
char *tmpname;
if (_rect_inpath) {
tmpname = path_open (_rect_inpath, cname, NULL);
fp = fopen (tmpname, "r");
}
else {
tmpname = NULL;
fp = fopen (cname, "r");
}
if (!fp) {
fatal_error ("Looking for .rect files for %s; not found!", cname);
}
fclose (fp);
if (tmpname) {
ReadRect (tmpname, raw_mode);
FREE (tmpname);
}
else {
ReadRect (cname, raw_mode);
}
}
void Layout::ReadRect (const char *fname, int raw_mode)
{
FILE *fp;
char buf[10240];
int rtype = 0;
int offset;
char *net;
Process *p;
if (raw_mode == 0 && (!N || !N->bN || !N->bN->p)) {
warning ("Layout::ReadRect() skipped; no netlist specified for layout");
return;
}
/* the process */
if (raw_mode == 0) {
p = N->bN->p;
Assert (p->isExpanded(), "What?");
}
else {
p = NULL;
}
_readrect = true;
_rbox.clear();
fp = fopen (fname, "r");
if (!fp) {
fatal_error ("Could not open `%s' rect file", fname);
}
while (fgets (buf, 10240, fp)) {
#if 0
printf ("BUF: %s", buf);
#endif
offset = 0;
for (int bx=0; bx < 10240 && buf[bx]; bx++) {
if (!isspace (buf[bx])) { break; }
offset++;
}
if (buf[offset] == '\0') continue;
if (strncmp (buf+offset, "inrect ", 7) == 0) {
offset += 7;
rtype = 1;
}
else if (strncmp (buf+offset, "outrect ", 8) == 0) {
offset += 8;
rtype = 2;
}
else if (strncmp (buf+offset, "rect ", 5) == 0) {
offset += 5;
rtype = 0;
}
else if (strncmp (buf+offset, "bbox ", 5) == 0) {
// this is auto-generated, so ignore it.
continue;
}
else if (strncmp (buf+offset, "sbox ", 5) == 0) {
// this overrides the bbox definition, so keep it
long rlx, rly, rux, ruy;
sscanf (buf+5, "%ld %ld %ld %ld", &rlx, &rly, &rux, &ruy);
_rbox.setRect (rlx, rly, rux - rlx, ruy - rly);
continue;
}
else if (strncmp (buf+offset, "cell ", 5) == 0) {
Assert (0, "FIXME: add support for subcells!");
/* celltype id swap? flipx? flipy? dx dy llx lly urx ury */
}
else {
fatal_error ("Line: %s\nNeeds inrect, outrect, rect, bbox, sbox, or cell", buf);
}
if (strncmp (buf+offset, "# ", 2) == 0) {
net = NULL;
offset += 2;
}
else {
net = buf+offset;
while (buf[offset] && buf[offset] != ' ') {
offset++;
}
Assert (buf[offset], "Long line");
buf[offset] = '\0';
offset++;
}
node_t *n = NULL;
char *material;
material = buf+offset;
while (buf[offset] && buf[offset] != ' ') {
offset++;
}
Assert (buf[offset], "Long line");
buf[offset] = '\0';
offset++;
if (net && (raw_mode == 0) && (strcmp (material, "$align") != 0)) {
n = ActNetlistPass::string_to_node (N, net);
if (!n) {
warning ("Could not find signal `%s' in netlist!", net);
}
//printf ("signal %s [node 0x%lx]\n", net, (unsigned long)n);
}
long rllx, rlly, rurx, rury;
sscanf (buf+offset, "%ld %ld %ld %ld", &rllx, &rlly, &rurx, &rury);
#if 0
printf ("[%s] rtype=%d, net=%s, (%ld, %ld) -> (%ld, %ld)\n", material,
rtype, net ? net : "-none-", rllx, rlly, rurx, rury);
#endif
if (rllx >= rurx || rlly >= rury) {
warning ("[%s] Empty rectangle (%ld,%ld) -> (%ld,%ld); skipped",
material, rllx, rlly, rurx, rury);
continue;
}
/* now find the material/layer, and draw it */
if (material[0] == 'm' && isdigit(material[1])) {
/* m# is a metal layer */
int l;
sscanf (material+1, "%d", &l);
#if 0
printf ("metal %d\n", l);
#endif
if (l < 1 || l > Technology::T->nmetals) {
warning ("Technology has %d metal layers; found `%s'; skipped",
Technology::T->nmetals, material);
}
else {
/*--- draw metal ---*/
l--;
DrawMetal (l, rllx, rlly, rurx - rllx, rury - rlly, n);
}
}
else if (strcmp (material, base->mat->getName()) == 0) {
/* poly */
#if 0
printf ("poly\n");
#endif
/*--- draw poly ---*/
DrawPoly (rllx, rlly, rurx - rllx, rury - rlly, n);
}
else if (strcmp (material, "$align") == 0) {
LayoutEdgeAttrib::attrib_list *l;
NEW (l, LayoutEdgeAttrib::attrib_list);
l->next = NULL;
/* alignment information! */
if (!net) {
/* abutbox */
_abutbox.setRect (rllx, rlly, rurx - rllx, rury - rlly);
}
else if (strncmp (net, "$l:", 3) == 0) {
l->name = Strdup (net+3);
l->offset = rlly; // left alignment: lower left corner y coord
if (!_le) {
_le = new LayoutEdgeAttrib();
}
_le->mergeleft (l);
}
else if (strncmp (net, "$r:", 3) == 0) {
l->name = Strdup (net+3);
l->offset = rlly; // right alignment: lower left corner y coord
if (!_le) {
_le = new LayoutEdgeAttrib();
}
_le->mergeright (l);
}
else if (strncmp (net, "$t:", 3) == 0) {
l->name = Strdup (net+3);
l->offset = rllx; // top alignment: lower left corner x coord
if (!_le) {
_le = new LayoutEdgeAttrib();
}
_le->mergetop (l);
#if 0
printf (" >> got top: ");
LayoutEdgeAttrib::print (stdout, _le->top());
printf ("\n");
#endif
}
else if (strncmp (net, "$b:", 3) == 0) {
l->name = Strdup (net+3);
l->offset = rllx; // bot alignment: lower left corner x coord
if (!_le) {
_le = new LayoutEdgeAttrib();
}
_le->mergebot (l);
#if 0
printf (" >> got bot: ");
LayoutEdgeAttrib::print (stdout, _le->bot());
printf ("\n");
#endif
}
else {
warning ("Invalid alignment layer directive: `%s'; skipped", net);
}
FREE (l); // don't free name: that gets used by the merge
}
else {
struct layermap *lm;
hash_bucket_t *b;
b = hash_lookup (lmap, material);
if (b) {
/*--- draw base layer or via ---*/
lm = (struct layermap *) b->v;
switch (lm->lcase) {
case LMAP_DIFF:
DrawDiff (lm->flavor, lm->etype, rllx, rlly,
rurx - rllx, rury - rlly, n);
break;
case LMAP_FET:
DrawFet (lm->flavor, lm->etype, rllx, rlly,
rurx - rllx, rury - rlly, n);
break;
case LMAP_WDIFF:
DrawWellDiff (lm->flavor, lm->etype, rllx, rlly,
rurx - rllx, rury - rlly, n);
break;
case LMAP_VIA:
lm->l->drawVia (rllx, rlly, rurx - rllx, rury - rlly, n, 0);
break;
default:
fatal_error ("Unknown lmap lcase %d?", lm->lcase);
break;
}
}
else {
int iswell = 0;
for (int i=0; i < Technology::T->num_devs; i++) {
for (int j=0; j < 2; j++) {
if (Technology::T->well[j][i]) {
if (strcmp (material, Technology::T->well[j][i]->getName()) == 0) {
iswell = 1;
break;
}
}
if (iswell) {
break;
}
}
}
if (!iswell) {
warning ("Unknown material `%s'; skipped", material);
}
/* skip wells! */
}
}
}
fclose (fp);
}
void Layout::getBBox (long *llx, long *lly, long *urx, long *ury)
{
long a, b, c, d;
int set;
if (_readrect && !_rbox.empty()) {
/* override, use bbox from .rect file */
*llx = _rbox.llx();
*lly = _rbox.lly();
*urx = _rbox.urx();
*ury = _rbox.ury();
return;
}
set = 0;
base->getBBox (&a, &b, &c, &d);
if (a <= c && b <= d) {
*llx = a;
*lly = b;
*urx = c;
*ury = d;
set = 1;
}
for (int i=0; i < nmetals; i++) {
metals[i]->getBBox (&a, &b, &c, &d);
if (a <= c && b <= d) {
if (set) {
*llx = MIN (*llx, a);
*lly = MIN (*lly, b);
*urx = MAX (*urx, c);
*ury = MAX (*ury, d);
}
else {
*llx = a;
*lly = b;
*urx = c;
*ury = d;
set = 1;
}
}
}
if (!set) {
*llx = 0;
*lly = 0;
*urx = -1;
*ury = -1;
}
}
void Layout::getBloatBBox (long *llx, long *lly, long *urx, long *ury)
{
long a, b, c, d;
int set;
if (_readrect && !_rbox.empty()) {
/* override, use bbox from .rect file */
*llx = _rbox.llx();
*lly = _rbox.lly();
*urx = _rbox.urx();
*ury = _rbox.ury();
return;
}
set = 0;
base->getBloatBBox (&a, &b, &c, &d);
if (a <= c && b <= d) {
*llx = a;
*lly = b;
*urx = c;
*ury = d;
set = 1;
}
for (int i=0; i < nmetals; i++) {
metals[i]->getBloatBBox (&a, &b, &c, &d);
if (a <= c && b <= d) {
if (set) {
*llx = MIN (*llx, a);
*lly = MIN (*lly, b);
*urx = MAX (*urx, c);
*ury = MAX (*ury, d);
}
else {
*llx = a;
*lly = b;
*urx = c;
*ury = d;
set = 1;
}
}
}
if (!set) {
*llx = 0;
*lly = 0;
*urx = -1;
*ury = -1;
}
}
/*
Returns a list with alternating (Layer, listoftiles)
*/
list_t *Layout::search (void *net)
{
list_t *ret = list_new ();
list_t *tmp;
tmp = base->searchMat (net);
if (list_isempty (tmp)) {
list_free (tmp);
}
else {
list_append (ret, base);
list_append (ret, tmp);
}
for (int i=0; i < nmetals; i++) {
list_t *l = metals[i]->searchMat (net);
if (list_isempty (l)) {
list_free (l);
}
else {
list_append (ret, metals[i]);
list_append (ret, l);
}
l = metals[i]->searchVia (net);
if (list_isempty (l)) {
list_free (l);
}
else {
list_append (ret, metals[i]);
list_append (ret, l);
}
}
return ret;
}
/*
Returns a list with alternating (Layer, listoftiles)
*/
list_t *Layout::search (int type)
{
list_t *ret = list_new ();
list_t *tmp;
tmp = base->searchMat (type);
if (list_isempty (tmp)) {
list_free (tmp);
}
else {
list_append (ret, base);
list_append (ret, tmp);
}
return ret;
}
static void printtile (FILE *fp, Tile *t)
{
fprintf (fp, "(%ld, %ld) -> (%ld, %ld)\n", t->getllx(), t->getlly(),
t->geturx(), t->getury());
}
/*
Propagate net labels across the layout
*/
void Layout::propagateAllNets ()
{
Layer *L;
listitem_t *li;
int flag;
int rep;
list_t **tl;
/* 0 = base, 1 = viabase, 2 = metal1, etc.. */
/* collect *all* tiles on *all* layers */
MALLOC (tl, list_t *, 1 + 2*nmetals);
L = base;
tl[0] = base->allNonSpaceMat ();
tl[1] = base->allNonSpaceVia ();
for (int i=0; i < nmetals; i++) {
Assert (L->up, "What?");
L = L->up;
tl[2*i+2] = metals[i]->allNonSpaceMat ();
if (i != nmetals - 1) {
tl[2*i+3] = metals[i]->allNonSpaceVia ();
}
else {
Assert (L->up == NULL, "what?");
}
}
do {
rep = 0;
L = base;
for (int i=0; i < 2*nmetals + 1; i++) {
Assert (L, "What?");
if ((i & 1) == 0) {
/* a horizontal layer; propagate within the layer */
do {
flag = 0;
for (li = list_first (tl[i]); li; li = list_next (li)) {
Tile *t = (Tile *) list_value (li);
Tile *neighbors[4];