luke
/
magic
mirror of https://github.com/RTimothyEdwards/magic.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Modifed the DRC section of the techfile to add two additional 

behaviors:  (1) An additional syntax for "widespacing" that allows
both the triggering metal's width AND run-length, which is typical
of rules in 65nm-and-below processes;  and (2) a new "option"
statement for the DRC section, with (for now) one possible flag
"wide-width-noninclusive", indicating that the metal width given
for "widespacing" rules means that a violation is only triggered
for material with a width greater than the given rule width (as
opposed to the default interpretation of a width greater than
or equal to the given rule width).
This commit is contained in:
Tim Edwards 2018-09-19 17:04:13 -04:00
parent f8b79133fb
commit 005a4880a3
3 changed files with 125 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
drc/DRCbasic.c
View File

@ -546,7 +546,9 @@ drcTile (tile, arg)
Rect *lr;
int i;
if (!trigpending) cptr->drcc_dist++;
if (!trigpending || (DRCCurStyle->DRCFlags
& DRC_FLAGS_WIDEWIDTH_NONINCLUSIVE))
cptr->drcc_dist++;
if (cptr->drcc_flags & DRC_REVERSE)
mrd = drcCanonicalMaxwidth(tpleft, GEO_WEST, arg, cptr);
@ -554,11 +556,20 @@ drcTile (tile, arg)
mrd = drcCanonicalMaxwidth(tile, GEO_EAST, arg, cptr);
else
mrd = NULL;
if (!trigpending) cptr->drcc_dist--;
if (!trigpending || (DRCCurStyle->DRCFlags
& DRC_FLAGS_WIDEWIDTH_NONINCLUSIVE))
cptr->drcc_dist--;
if (trigpending)
{
if (mrd)
triggered = mrd->entries;
{
/* Run-length rule */
if ((cptr->drcc_cdist <= cptr->drcc_dist) ||
((edgeTop - edgeBot) > cptr->drcc_cdist))
triggered = mrd->entries;
else
cptr = cptr->drcc_next;
}
else
cptr = cptr->drcc_next;
}
@ -903,7 +914,9 @@ checkbottom:
Rect *lr;
int i;
if (!trigpending) cptr->drcc_dist++;
if (!trigpending || (DRCCurStyle->DRCFlags
& DRC_FLAGS_WIDEWIDTH_NONINCLUSIVE))
cptr->drcc_dist++;
if (cptr->drcc_flags & DRC_REVERSE)
mrd = drcCanonicalMaxwidth(tpbot, GEO_SOUTH, arg, cptr);
@ -911,11 +924,18 @@ checkbottom:
mrd = drcCanonicalMaxwidth(tile, GEO_NORTH, arg, cptr);
else
mrd = NULL;
if (!trigpending) cptr->drcc_dist--;
if (!trigpending || (DRCCurStyle->DRCFlags
& DRC_FLAGS_WIDEWIDTH_NONINCLUSIVE))
cptr->drcc_dist--;
if (trigpending)
{
if (mrd)
triggered = mrd->entries;
/* Run-length rule */
if ((cptr->drcc_cdist <= cptr->drcc_dist) ||
((edgeRight - edgeLeft) > cptr->drcc_cdist))
triggered = mrd->entries;
else
cptr = cptr->drcc_next;
else
cptr = cptr->drcc_next;
}

100
drc/DRCtech.c
View File

@ -67,7 +67,7 @@ static int drcRulesOptimized = 0;
int drcWidth(), drcSpacing(), drcEdge(), drcNoOverlap();
int drcExactOverlap(), drcExtend();
int drcSurround(), drcRectOnly(), drcOverhang();
int drcStepSize();
int drcStepSize(), drcOption();
int drcMaxwidth(), drcArea(), drcRectangle(), drcAngles();
int drcCifSetStyle(), drcCifWidth(), drcCifSpacing();
int drcCifMaxwidth(), drcCifArea();
@ -540,6 +540,7 @@ DRCTechStyleInit()
DRCCurStyle->DRCScaleFactorN = 1;
DRCCurStyle->DRCScaleFactorD = 1;
DRCCurStyle->DRCStepSize = 0;
DRCCurStyle->DRCFlags = (char)0;
DRCTechHalo = 0;
@ -959,6 +960,8 @@ DRCTechAddRule(sectionName, argc, argv)
"layers1 layers2 distance why",
"no_overlap", 3, 3, drcNoOverlap,
"layers1 layers2",
"option", 2, 2, drcOption,
"option_name option_value",
"overhang", 5, 5, drcOverhang,
"layers1 layers2 distance why",
"rect_only", 3, 3, drcRectOnly,
@ -971,7 +974,7 @@ DRCTechAddRule(sectionName, argc, argv)
"layers1 layers2 distance presence why",
"width", 4, 4, drcWidth,
"layers width why",
"widespacing", 7, 7, drcSpacing,
"widespacing", 7, 8, drcSpacing,
"layers1 width layers2 separation adjacency why",
"area", 5, 5, drcArea,
"layers area horizon why",
@ -1661,12 +1664,14 @@ drcSpacing3(argc, argv)
int
drcMaskSpacing(set1, set2, pmask1, pmask2, wwidth, distance, adjacency,
why, widerule, multiplane)
why, widerule, runlength, multiplane)
TileTypeBitMask *set1, *set2;
PlaneMask pmask1, pmask2;
int wwidth, distance;
char *adjacency, *why;
bool widerule, multiplane;
bool widerule;
int runlength;
bool multiplane;
{
TileTypeBitMask tmp1, tmp2, setR, setRreverse;
int plane, plane2;
@ -1825,7 +1830,7 @@ drcMaskSpacing(set1, set2, pmask1, pmask2, wwidth, distance, adjacency,
dptrig = (DRCCookie *) mallocMagic((unsigned)
(sizeof (DRCCookie)));
drcAssign(dptrig, wwidth, dpnew, set1, set1, why,
wwidth, DRC_REVERSE | DRC_MAXWIDTH |
runlength, DRC_REVERSE | DRC_MAXWIDTH |
DRC_TRIGGER | DRC_BENDS, plane2, plane);
dp->drcc_next = dptrig;
@ -1880,7 +1885,7 @@ drcMaskSpacing(set1, set2, pmask1, pmask2, wwidth, distance, adjacency,
dptrig = (DRCCookie *) mallocMagic((unsigned)
(sizeof (DRCCookie)));
drcAssign(dptrig, wwidth, dpnew, set1, set1, why,
wwidth, DRC_FORWARD | DRC_MAXWIDTH |
runlength, DRC_FORWARD | DRC_MAXWIDTH |
DRC_TRIGGER | DRC_BENDS, plane2, plane);
dp->drcc_next = dptrig;
}
@ -2089,7 +2094,7 @@ drcMaskSpacing(set1, set2, pmask1, pmask2, wwidth, distance, adjacency,
* Notes:
* Extended to include the rule syntax:
*
* widespacing layers1 width layers2 distance adjacency why
* widespacing layers1 width [runlength] layers2 distance adjacency why
*
* This extension covers rules such as "If m1 width > 10um, then spacing to
* unconnected m1 must be at least 0.6um". This assumes that the instantiated
@ -2113,6 +2118,10 @@ drcMaskSpacing(set1, set2, pmask1, pmask2, wwidth, distance, adjacency,
* (Added 11/6/06) Adjacency may be "corner_ok", in which case it calls
* routing drcSpacing3() (see above).
*
* (Added 9/19/18) Additional run-length distance can be used to limit the
* maxwidth rule to geometry exceeding the given run-length (often used with
* 65nm and smaller feature size processes).
*
* ----------------------------------------------------------------------------
*/
@ -2126,7 +2135,7 @@ drcSpacing(argc, argv)
char *why;
TileTypeBitMask set1, set2, tmp1, tmp2;
PlaneMask pmask1, pmask2, pmaskA, pmaskB, ptest;
int wwidth, distance, plane, plane2;
int wwidth, distance, plane, plane2, runlength;
bool widerule, multiplane = FALSE;
if ((argc == 7) && (!strcmp(argv[4], "corner_ok")))
@ -2137,10 +2146,23 @@ drcSpacing(argc, argv)
if (widerule)
{
wwidth = atoi(argv[2]);
layers2 = argv[3];
distance = atoi(argv[4]);
adjacency = argv[5];
why = drcWhyDup(argv[6]);
if (argc == 8)
{
runlength = atoi(argv[3]);
layers2 = argv[4];
distance = atoi(argv[5]);
adjacency = argv[6];
why = drcWhyDup(argv[7]);
}
else
{
runlength = distance;
layers2 = argv[3];
distance = atoi(argv[4]);
adjacency = argv[5];
why = drcWhyDup(argv[6]);
}
/* TxPrintf("Info: DRCtech: widespacing rule for %s width %d:"
" spacing must be %d\n", layers1, wwidth, distance); */
}
@ -2151,7 +2173,8 @@ drcSpacing(argc, argv)
adjacency = argv[4];
wwidth = distance;
why = drcWhyDup(argv[5]);
if (argc == 7)
runlength = distance;
if (argc >= 7)
{
TechError("Unknown argument in spacing line.\n");
return(0);
@ -2236,13 +2259,13 @@ drcSpacing(argc, argv)
return drcMaskSpacing(&tmp1, &tmp2, pmaskA, pmaskB,
wwidth, distance, adjacency, why,
widerule, multiplane);
widerule, runlength, multiplane);
}
}
}
else
return drcMaskSpacing(&set1, &set2, pmask1, pmask2, wwidth,
distance, adjacency, why, widerule, multiplane);
distance, adjacency, why, widerule, runlength, multiplane);
return 0;
}
@ -3152,6 +3175,53 @@ drcRectangle(argc, argv)
return maxwidth;
}
/*
* ----------------------------------------------------------------------------
*
* drcOption --
*
* Process an option declaration
* This is of the form:
*
* option option_name [...]
*
* e.g,
*
* option wide-width-inclusive
*
* Results:
* Returns 0.
*
* Side effects:
* Updates DRCFlags.
*
* ----------------------------------------------------------------------------
*/
int
drcOption(argc, argv)
int argc;
char *argv[];
{
int i;
if (DRCCurStyle == NULL) return 0;
/* Assume space-separated list of options. Flag an error on any */
/* option name not recognized. */
for (i = 1; i < argc; i++)
{
if (!strcmp(argv[i], "wide-width-noninclusive"))
DRCCurStyle->DRCFlags |= DRC_FLAGS_WIDEWIDTH_NONINCLUSIVE;
else
{
TechError("Unrecognized DRC option \"%s\" (ignored).\n", argv[i]);
}
}
return (0);
}
/*
* ----------------------------------------------------------------------------
*

14
drc/drc.h
View File

@ -172,10 +172,24 @@ typedef struct drcstyle
int DRCScaleFactorD; /* Multiply dist by this to get magic units */
int DRCTechHalo; /* largest action distance of design rules */
int DRCStepSize; /* chunk size for decomposing large areas */
char DRCFlags; /* Option flags */
drcWhyList *DRCWhyList;
PaintResultType DRCPaintTable[NP][NT][NT];
} DRCStyle;
/* flag values used by DRCFlags */
/* DRC_FLAGS_WIDEWIDTH_NONINCLUSIVE: If set, indicates that the ruleset */
/* defines "wide" as material of MORE THAN the given DRC rule width value, as */
/* opposed to the default behavior, which is to define "wide" as material of */
/* AT LEAST the given DRC rule width value. */
/* (Note that at least for now, there is no similar flag for "maxwidth" rules, */
/* which are always interpreted as inclusive, meaning that material of the */
/* exact width of the DRC rule width value is legal.) */
#define DRC_FLAGS_WIDEWIDTH_NONINCLUSIVE 0x01
/* Things shared between DRC functions, but not used by the
* outside world:
*/