diff options
Diffstat (limited to 'src/map/fpga/fpgaLib.c')
-rw-r--r-- | src/map/fpga/fpgaLib.c | 69 |
1 files changed, 59 insertions, 10 deletions
diff --git a/src/map/fpga/fpgaLib.c b/src/map/fpga/fpgaLib.c index 00832bce..8ac66cdc 100644 --- a/src/map/fpga/fpgaLib.c +++ b/src/map/fpga/fpgaLib.c @@ -39,9 +39,7 @@ ***********************************************************************/ int Fpga_LutLibReadVarMax( Fpga_LutLib_t * p ) { return p->LutMax; } float * Fpga_LutLibReadLutAreas( Fpga_LutLib_t * p ) { return p->pLutAreas; } -float * Fpga_LutLibReadLutDelays( Fpga_LutLib_t * p ) { return p->pLutDelays; } float Fpga_LutLibReadLutArea( Fpga_LutLib_t * p, int Size ) { assert( Size <= p->LutMax ); return p->pLutAreas[Size]; } -float Fpga_LutLibReadLutDelay( Fpga_LutLib_t * p, int Size ) { assert( Size <= p->LutMax ); return p->pLutDelays[Size]; } /**Function************************************************************* @@ -59,7 +57,7 @@ Fpga_LutLib_t * Fpga_LutLibCreate( char * FileName, int fVerbose ) char pBuffer[1000], * pToken; Fpga_LutLib_t * p; FILE * pFile; - int i; + int i, k; pFile = fopen( FileName, "r" ); if ( pFile == NULL ) @@ -87,16 +85,30 @@ Fpga_LutLib_t * Fpga_LutLibCreate( char * FileName, int fVerbose ) return NULL; } + // read area pToken = strtok( NULL, " \t\n" ); p->pLutAreas[i] = (float)atof(pToken); - pToken = strtok( NULL, " \t\n" ); - p->pLutDelays[i] = (float)atof(pToken); + // read delays + k = 0; + while ( pToken = strtok( NULL, " \t\n" ) ) + p->pLutDelays[i][k++] = (float)atof(pToken); + + // check for out-of-bound + if ( k > i ) + { + printf( "LUT %d has too many pins (%d). Max allowed is %d.\n", i, k, i ); + return NULL; + } + + // check if var delays are specifies + if ( k > 1 ) + p->fVarPinDelays = 1; if ( i == FPGA_MAX_LUTSIZE ) { printf( "Skipping LUTs of size more than %d.\n", i ); - break; + return NULL; } i++; } @@ -106,6 +118,32 @@ Fpga_LutLib_t * Fpga_LutLibCreate( char * FileName, int fVerbose ) p->LutMax = FPGA_MAX_LEAVES; printf( "Warning: LUTs with more than %d input will not be used.\n", FPGA_MAX_LEAVES ); } + + // check the library + if ( p->fVarPinDelays ) + { + for ( i = 1; i <= p->LutMax; i++ ) + for ( k = 0; k < i; k++ ) + { + if ( p->pLutDelays[i][k] <= 0.0 ) + printf( "Warning: Pin %d of LUT %d has delay %f. Pin delays should be non-negative numbers. Technology mapping may not work correctly.\n", + k, i, p->pLutDelays[i][k] ); + if ( k && p->pLutDelays[i][k-1] > p->pLutDelays[i][k] ) + printf( "Warning: Pin %d of LUT %d has delay %f. Pin %d of LUT %d has delay %f. Pin delays should be in non-degreasing order. Technology mapping may not work correctly.\n", + k-1, i, p->pLutDelays[i][k-1], + k, i, p->pLutDelays[i][k] ); + } + } + else + { + for ( i = 1; i <= p->LutMax; i++ ) + { + if ( p->pLutDelays[i][0] <= 0.0 ) + printf( "Warning: LUT %d has delay %f. Pin delays should be non-negative numbers. Technology mapping may not work correctly.\n", + k, i, p->pLutDelays[i][0] ); + } + } + return p; } @@ -162,11 +200,22 @@ void Fpga_LutLibFree( Fpga_LutLib_t * pLutLib ) ***********************************************************************/ void Fpga_LutLibPrint( Fpga_LutLib_t * pLutLib ) { - int i; + int i, k; printf( "# The area/delay of k-variable LUTs:\n" ); printf( "# k area delay\n" ); - for ( i = 1; i <= pLutLib->LutMax; i++ ) - printf( "%d %7.2f %7.2f\n", i, pLutLib->pLutAreas[i], pLutLib->pLutDelays[i] ); + if ( pLutLib->fVarPinDelays ) + { + for ( i = 1; i <= pLutLib->LutMax; i++ ) + { + printf( "%d %7.2f ", i, pLutLib->pLutAreas[i] ); + for ( k = 0; k < i; k++ ) + printf( " %7.2f", pLutLib->pLutDelays[i][k] ); + printf( "\n" ); + } + } + else + for ( i = 1; i <= pLutLib->LutMax; i++ ) + printf( "%d %7.2f %7.2f\n", i, pLutLib->pLutAreas[i], pLutLib->pLutDelays[i][0] ); } /**Function************************************************************* @@ -186,7 +235,7 @@ int Fpga_LutLibDelaysAreDiscrete( Fpga_LutLib_t * pLutLib ) int i; for ( i = 1; i <= pLutLib->LutMax; i++ ) { - Delay = pLutLib->pLutDelays[i]; + Delay = pLutLib->pLutDelays[i][0]; if ( ((float)((int)Delay)) != Delay ) return 0; } |