luke/abc
1
0
Fork 0
mirror of https://github.com/YosysHQ/abc.git synced 2026-09-02 18:59:26 +02:00
Code Issues Packages Projects Releases Wiki Activity

Extending and improving timing manager.

Browse Source
This commit is contained in:
Alan Mishchenko
2015-11-08 11:44:37 -08:00
parent e50fc467fd
commit 96d8f899d9
11 changed files with 742 additions and 58 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/map/mio/mioApi.c
+2
View File
@@ -178,7 +178,9 @@ Vec_Int_t * Mio_GateReadExpr ( Mio_Gate_t * pGate ) { return
word Mio_GateReadTruth ( Mio_Gate_t * pGate ) { return pGate->nInputs <= 6 ? pGate->uTruth : 0; }
word * Mio_GateReadTruthP ( Mio_Gate_t * pGate ) { return pGate->nInputs <= 6 ? NULL: pGate->pTruth; }
int Mio_GateReadValue ( Mio_Gate_t * pGate ) { return pGate->Value; }
int Mio_GateReadCell ( Mio_Gate_t * pGate ) { return pGate->Cell; }
void Mio_GateSetValue ( Mio_Gate_t * pGate, int Value ) { pGate->Value = Value; }
void Mio_GateSetCell ( Mio_Gate_t * pGate, int Cell ) { pGate->Value = Cell; }
int Mio_GateIsInv ( Mio_Gate_t * pGate ) { return pGate->uTruth == ABC_CONST(0x5555555555555555); }
/**Function*************************************************************
src/map/mio/mioInt.h
+1
View File
@@ -93,6 +93,7 @@ struct Mio_GateStruct_t_
Mio_Gate_t * pTwin;
// the derived information
int Cell; // cell id
int nInputs; // the number of inputs
double dDelayMax; // the maximum delay
char * pSop; // sum-of-products
src/map/scl/sclLib.h
+134
View File
@@ -65,6 +65,12 @@ struct SC_Pair_
float rise;
float fall;
};
typedef struct SC_PairI_ SC_PairI;
struct SC_PairI_
{
int rise;
int fall;
};
typedef struct SC_SizePars_ SC_SizePars;
struct SC_SizePars_
@@ -144,6 +150,9 @@ struct SC_Surface_
Vec_Flt_t vIndex0; // Vec<float> -- correspondes to "index_1" in the liberty file (for timing: slew)
Vec_Flt_t vIndex1; // Vec<float> -- correspondes to "index_2" in the liberty file (for timing: load)
Vec_Ptr_t vData; // Vec<Vec<float> > -- 'data[i0][i1]' gives value at '(index0[i0], index1[i1])'
Vec_Int_t vIndex0I; // Vec<float> -- correspondes to "index_1" in the liberty file (for timing: slew)
Vec_Int_t vIndex1I; // Vec<float> -- correspondes to "index_2" in the liberty file (for timing: load)
Vec_Ptr_t vDataI; // Vec<Vec<float> > -- 'data[i0][i1]' gives value at '(index0[i0], index1[i1])'
float approx[3][6];
};
@@ -171,6 +180,8 @@ struct SC_Pin_
float cap; // -- this value is used if 'rise_cap' and 'fall_cap' is missing (copied by 'postProcess()'). (not used)
float rise_cap; // }- used for input pins ('cap' too).
float fall_cap; // }
float rise_capI; // }- used for input pins ('cap' too).
float fall_capI; // }
float max_out_cap; // } (not used)
float max_out_slew; // }- used only for output pins (max values must not be exceeded or else mapping is illegal) (not used)
char * func_text; // }
@@ -188,6 +199,8 @@ struct SC_Cell_
int unsupp; // -- set to TRUE by parser if cell contains information we cannot handle
float area;
float leakage;
float areaI;
float leakageI;
int drive_strength; // -- some library files provide this field (currently unused, but may be a good hint for sizing) (not used)
Vec_Ptr_t vPins; // NamedSet<SC_Pin>
int n_inputs; // -- 'pins[0 .. n_inputs-1]' are input pins
@@ -372,7 +385,10 @@ static inline void Abc_SclSurfaceFree( SC_Surface * p )
{
Vec_FltErase( &p->vIndex0 );
Vec_FltErase( &p->vIndex1 );
Vec_IntErase( &p->vIndex0I );
Vec_IntErase( &p->vIndex1I );
Vec_VecErase( (Vec_Vec_t *)&p->vData );
Vec_VecErase( (Vec_Vec_t *)&p->vDataI );
ABC_FREE( p->pName );
// ABC_FREE( p );
}
@@ -529,6 +545,84 @@ static inline void Scl_LibPinDeparture( SC_Timing * pTime, SC_Pair * pDepIn, SC_
}
}
/**Function*************************************************************
Synopsis [Lookup table delay computation.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
static inline int Scl_LibLookupI( SC_Surface * p, int slew, int load )
{
int * pIndex0, * pIndex1, * pDataS, * pDataS1;
int p0, p1, s, l;
iword lFrac0, lFrac1, sFrac;
// handle constant table
if ( Vec_IntSize(&p->vIndex0I) == 1 && Vec_IntSize(&p->vIndex1I) == 1 )
{
Vec_Int_t * vTemp = (Vec_Int_t *)Vec_PtrEntry(&p->vDataI, 0);
assert( Vec_PtrSize(&p->vDataI) == 1 );
assert( Vec_IntSize(vTemp) == 1 );
return Vec_IntEntry(vTemp, 0);
}
// Find closest sample points in surface:
pIndex0 = Vec_IntArray(&p->vIndex0I);
for ( s = 1; s < Vec_IntSize(&p->vIndex0I)-1; s++ )
if ( pIndex0[s] > slew )
break;
s--;
pIndex1 = Vec_IntArray(&p->vIndex1I);
for ( l = 1; l < Vec_IntSize(&p->vIndex1I)-1; l++ )
if ( pIndex1[l] > load )
break;
l--;
pDataS = Vec_IntArray( (Vec_Int_t *)Vec_PtrEntry(&p->vDataI, s) );
pDataS1 = Vec_IntArray( (Vec_Int_t *)Vec_PtrEntry(&p->vDataI, s+1) );
// Interpolate (or extrapolate) function value from sample points:
// lfrac = (load - pIndex1[l]) / (pIndex1[l+1] - pIndex1[l]);
// sfrac = (slew - pIndex0[s]) / (pIndex0[s+1] - pIndex0[s]);
lFrac0 = (iword)(pDataS [l+1] - pDataS [l]) * (iword)(load - pIndex1[l]) / (iword)(pIndex1[l+1] - pIndex1[l]);
lFrac1 = (iword)(pDataS1[l+1] - pDataS1[l]) * (iword)(load - pIndex1[l]) / (iword)(pIndex1[l+1] - pIndex1[l]);
// p0 = pDataS [l] + lfrac * (pDataS [l+1] - pDataS [l]);
// p1 = pDataS1[l] + lfrac * (pDataS1[l+1] - pDataS1[l]);
p0 = pDataS [l] + (int)lFrac0;
p1 = pDataS1[l] + (int)lFrac1;
sFrac = (iword)(p1 - p0) * (iword)(slew - pIndex0[s]) / (iword)(pIndex0[s+1] - pIndex0[s]);
// return p0 + sfrac * (p1 - p0);
return p0 + (int)sFrac;
}
static inline void Scl_LibPinArrivalI( SC_Timing * pTime, SC_PairI * pArrIn, SC_PairI * pSlewIn, SC_PairI * pLoad, SC_PairI * pArrOut, SC_PairI * pSlewOut )
{
if (pTime->tsense == sc_ts_Pos || pTime->tsense == sc_ts_Non)
{
pArrOut->rise = Abc_MaxInt( pArrOut->rise, pArrIn->rise + Scl_LibLookupI(&pTime->pCellRise, pSlewIn->rise, pLoad->rise) );
pArrOut->fall = Abc_MaxInt( pArrOut->fall, pArrIn->fall + Scl_LibLookupI(&pTime->pCellFall, pSlewIn->fall, pLoad->fall) );
pSlewOut->rise = Abc_MaxInt( pSlewOut->rise, Scl_LibLookupI(&pTime->pRiseTrans, pSlewIn->rise, pLoad->rise) );
pSlewOut->fall = Abc_MaxInt( pSlewOut->fall, Scl_LibLookupI(&pTime->pFallTrans, pSlewIn->fall, pLoad->fall) );
}
if (pTime->tsense == sc_ts_Neg || pTime->tsense == sc_ts_Non)
{
pArrOut->rise = Abc_MaxInt( pArrOut->rise, pArrIn->fall + Scl_LibLookupI(&pTime->pCellRise, pSlewIn->fall, pLoad->rise) );
pArrOut->fall = Abc_MaxInt( pArrOut->fall, pArrIn->rise + Scl_LibLookupI(&pTime->pCellFall, pSlewIn->rise, pLoad->fall) );
pSlewOut->rise = Abc_MaxInt( pSlewOut->rise, Scl_LibLookupI(&pTime->pRiseTrans, pSlewIn->fall, pLoad->rise) );
pSlewOut->fall = Abc_MaxInt( pSlewOut->fall, Scl_LibLookupI(&pTime->pFallTrans, pSlewIn->rise, pLoad->fall) );
}
}
/**Function*************************************************************
Synopsis [Compute one timing edge.]
@@ -582,6 +676,46 @@ static inline void Scl_LibHandleInputDriver( SC_Cell * pCell, SC_Pair * pLoadIn,
pArrOut->rise = ArrOut1.rise - ArrOut0.rise;
}
/**Function*************************************************************
Synopsis [Compute one timing edge.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
static inline int Scl_LibPinArrivalEstimateI( SC_Cell * pCell, int iPin, int Slew, int Load )
{
SC_PairI LoadIn = { Load, Load };
SC_PairI ArrIn = { 0, 0 };
SC_PairI ArrOut = { 0, 0 };
SC_PairI SlewIn = { 0, 0 };
SC_PairI SlewOut = { 0, 0 };
// Vec_Flt_t * vIndex0 = pTime->pCellRise->vIndex0; // slew
// SlewIn.fall = SlewIn.rise = Vec_FltEntry( vIndex0, Vec_FltSize(vIndex0)/2 );
SlewIn.fall = SlewIn.rise = Slew;
Scl_LibPinArrivalI( Scl_CellPinTime(pCell, iPin), &ArrIn, &SlewIn, &LoadIn, &ArrOut, &SlewOut );
return (ArrOut.fall + ArrOut.rise) >> 1;
}
static inline void Scl_LibHandleInputDriver2( SC_Cell * pCell, SC_PairI * pLoadIn, SC_PairI * pArrOut, SC_PairI * pSlewOut )
{
SC_PairI LoadIn = { 0, 0 }; // zero input load
SC_PairI ArrIn = { 0, 0 }; // zero input time
SC_PairI SlewIn = { 0, 0 }; // zero input slew
SC_PairI ArrOut0 = { 0, 0 }; // output time under zero load
SC_PairI ArrOut1 = { 0, 0 }; // output time under given load
SC_PairI SlewOut = { 0, 0 }; // output slew under zero load
pSlewOut->fall = pSlewOut->rise = 0;
assert( pCell->n_inputs == 1 );
Scl_LibPinArrivalI( Scl_CellPinTime(pCell, 0), &ArrIn, &SlewIn, &LoadIn, &ArrOut0, &SlewOut );
Scl_LibPinArrivalI( Scl_CellPinTime(pCell, 0), &ArrIn, &SlewIn, pLoadIn, &ArrOut1, pSlewOut );
pArrOut->fall = ArrOut1.fall - ArrOut0.fall;
pArrOut->rise = ArrOut1.rise - ArrOut0.rise;
}
/*=== sclLiberty.c ===============================================================*/
extern SC_Lib * Abc_SclReadLiberty( char * pFileName, int fVerbose, int fVeryVerbose );
/*=== sclLibScl.c ===============================================================*/
src/map/scl/sclLibScl.c
+24 -3
View File
@@ -49,20 +49,35 @@ ABC_NAMESPACE_IMPL_START
static void Abc_SclReadSurface( Vec_Str_t * vOut, int * pPos, SC_Surface * p )
{
Vec_Flt_t * vVec;
Vec_Int_t * vVecI;
int i, j;
for ( i = Vec_StrGetI(vOut, pPos); i != 0; i-- )
Vec_FltPush( &p->vIndex0, Vec_StrGetF(vOut, pPos) );
{
float Num = Vec_StrGetF(vOut, pPos);
Vec_FltPush( &p->vIndex0, Num );
Vec_IntPush( &p->vIndex0I, (int)(MIO_NUM*Num) );
}
for ( i = Vec_StrGetI(vOut, pPos); i != 0; i-- )
Vec_FltPush( &p->vIndex1, Vec_StrGetF(vOut, pPos) );
{
float Num = Vec_StrGetF(vOut, pPos);
Vec_FltPush( &p->vIndex1, Num );
Vec_IntPush( &p->vIndex1I, (int)(MIO_NUM*Num) );
}
for ( i = 0; i < Vec_FltSize(&p->vIndex0); i++ )
{
vVec = Vec_FltAlloc( Vec_FltSize(&p->vIndex1) );
Vec_PtrPush( &p->vData, vVec );
vVecI = Vec_IntAlloc( Vec_FltSize(&p->vIndex1) );
Vec_PtrPush( &p->vDataI, vVecI );
for ( j = 0; j < Vec_FltSize(&p->vIndex1); j++ )
Vec_FltPush( vVec, Vec_StrGetF(vOut, pPos) );
{
float Num = Vec_StrGetF(vOut, pPos);
Vec_FltPush( vVec, Num );
Vec_IntPush( vVecI, (int)(MIO_NUM*Num) );
}
}
for ( i = 0; i < 3; i++ )
@@ -138,6 +153,9 @@ static int Abc_SclReadLibrary( Vec_Str_t * vOut, int * pPos, SC_Lib * p )
pCell->n_inputs = Vec_StrGetI(vOut, pPos);
pCell->n_outputs = Vec_StrGetI(vOut, pPos);
pCell->areaI = (int)(MIO_NUM*pCell->area);
pCell->leakageI = (int)(MIO_NUM*pCell->leakage);
/*
printf( "%s\n", pCell->pName );
if ( !strcmp( "XOR3_X4M_A9TL", pCell->pName ) )
@@ -154,6 +172,9 @@ static int Abc_SclReadLibrary( Vec_Str_t * vOut, int * pPos, SC_Lib * p )
pPin->pName = Vec_StrGetS(vOut, pPos);
pPin->rise_cap = Vec_StrGetF(vOut, pPos);
pPin->fall_cap = Vec_StrGetF(vOut, pPos);
pPin->rise_capI = (int)(MIO_NUM*pPin->rise_capI);
pPin->fall_capI = (int)(MIO_NUM*pPin->fall_capI);
}
for ( j = 0; j < pCell->n_outputs; j++ )