Modified the "def write" function so that obstruction layers are
output as blockages. That allows obstruction layers to be placed in a layout specifically for the purpose of being output as a blockage. Otherwise, an obstruction layer is generally considered non-electrical and will not show up as a node in the extraction file, so obstruction layers were being missed entirely by "def write". Also: Where "def write" complains about floating labels, made an exception for labels on non-electrical layers (like "comment").
This commit is contained in:
Tim Edwards
parent
a54a20ee58
commit
4557dd1639
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@ -29,9 +29,10 @@ static char rcsid[] __attribute__ ((unused)) = "$Header: /usr/cvsroot/magic-8.0/
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#include "utils/malloc.h"
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#include "utils/undo.h"
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#include "cif/cif.h"
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#include "extract/extractInt.h" /* for ExtCurStyle definition */
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#include "extflat/extflat.h"
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#include "lef/lefInt.h"
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#include "drc/drc.h" /* for querying width,spacing rules */
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#include "drc/drc.h" /* for querying width, spacing rules */
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/* C99 compat */
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#include "utils/signals.h"
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@ -800,13 +801,18 @@ defnodeVisit(node, res, cap, defdata)
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}
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/* Check if anything was found in the location (e.g., .ext file
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* could be invalid or outdated).
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* could be invalid or outdated). However, if magictype is not
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* an electrically active type, then don't issue any warning.
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*/
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if (GEO_RECTNULL(&rport))
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TxError("Nothing found at node %s location (floating label?)!\n", ndn);
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{
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if (TTMaskHasType(&ExtCurStyle->exts_activeTypes, magictype))
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TxError("Nothing of type %s found at node %s location"
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" (floating label?)!\n",
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DBTypeLongNameTbl[magictype], ndn);
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}
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else
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{
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/* Expand the rectangle around the port to overlap any */
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/* connecting material. */
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rport.r_xbot--;
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@ -2430,16 +2436,20 @@ defWriteBlockages(f, rootDef, oscale, MagicToLefTable)
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{
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DefObsData defobsdata;
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lefLayer *lefl;
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int i, numblocks, nonempty;
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int i, numblocks, nonempty, pNum;
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LinkedRect *lr;
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HashSearch hs;
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HashEntry *he;
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TileTypeBitMask ExtraObsLayersMask;
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int defSimpleBlockageFunc(); /* Forward declaration */
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int defblockageVisit();
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defobsdata.def = rootDef;
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defobsdata.nlayers = 0;
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TTMaskZero(&ExtraObsLayersMask);
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/* Blockages are done by layer. Create one blockage per route */
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/* layer, and ignore vias. */
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@ -2482,7 +2492,16 @@ defWriteBlockages(f, rootDef, oscale, MagicToLefTable)
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defobsdata.baseNames[numblocks] = llayer;
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TTMaskSetOnlyType(&defobsdata.blockMasks[numblocks], lefl->type);
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if (lefl->obsType != -1)
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{
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TTMaskSetType(&defobsdata.blockMasks[numblocks], lefl->obsType);
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/* If the obstruction type is not an active electrical
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* type, then add it to the mask of layers to search
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* separately from extracted nodes.
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*/
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if (!TTMaskHasType(&ExtCurStyle->exts_activeTypes,
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lefl->obsType))
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TTMaskSetType(&ExtraObsLayersMask, lefl->obsType);
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}
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defobsdata.blockData[numblocks] = NULL;
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numblocks++;
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}
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@ -2492,6 +2511,22 @@ defWriteBlockages(f, rootDef, oscale, MagicToLefTable)
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if (numblocks > 0)
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EFVisitNodes(defblockageVisit, (ClientData)&defobsdata);
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/* If obstruction types are marked as non-electrical layers (which
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* normally they are), then they will not be extracted as nodes.
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* Do a separate search on obstruction areas and add them to the
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* list of blockages. To be considered, the layer must have a
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* corresponding LEF route or via layer type, that LEF record must
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* define an obstruction type, and that obstruction type must not
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* be in the active layer list.
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*/
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for (pNum = PL_SELECTBASE; pNum < DBNumPlanes; pNum++)
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{
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DBSrPaintArea((Tile *)NULL, rootDef->cd_planes[pNum], &TiPlaneRect,
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&ExtraObsLayersMask, defSimpleBlockageFunc,
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(ClientData)&defobsdata);
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}
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/* Quick check for presence of data to write */
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nonempty = 0;
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@ -2619,6 +2654,45 @@ defBlockageGeometryFunc(tile, plane, defobsdata)
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return 0;
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}
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/* Callback function for generating a linked list of blockage geometry */
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/* pulled from all non-electrical obstruction types. */
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int
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defSimpleBlockageFunc(tile, defobsdata)
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Tile *tile; /* Tile being visited */
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DefObsData *defobsdata; /* Data passed to this function */
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{
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TileType ttype = TiGetTypeExact(tile);
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TileType loctype;
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Rect r;
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LinkedRect *lr;
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int i;
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if (IsSplit(tile))
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loctype = (ttype & TT_SIDE) ? SplitRightType(tile) : SplitLeftType(tile);
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else
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loctype = ttype;
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if (loctype == TT_SPACE) return 0;
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for (i = 0; i < defobsdata->nlayers; i++)
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if (TTMaskHasType(&(defobsdata->blockMasks[i]), loctype))
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break;
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if (i < defobsdata->nlayers)
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{
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TiToRect(tile, &r);
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lr = (LinkedRect *)mallocMagic(sizeof(LinkedRect));
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lr->r_next = defobsdata->blockData[i];
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lr->r_type = loctype;
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lr->r_r = r;
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defobsdata->blockData[i] = lr;
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}
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return 0;
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}
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/*
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*------------------------------------------------------------
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*
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@ -3063,8 +3137,7 @@ DefWriteCell(def, outName, allSpecial, units, analRetentive)
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fclose(f2);
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/* Blockages */
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if (nets.blockages > 0)
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defWriteBlockages(f, def, scale, lefMagicToLefLayer);
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defWriteBlockages(f, def, scale, lefMagicToLefLayer);
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fprintf(f, "END DESIGN\n\n");
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fclose(f);
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