// SetConfigBit writes a bit to a specified config register using read-modify-write. Only use
// function to access memory locations that are not (!) performance critical (e.g. Tile-ID).
// Use MallocConfigReg() function for performance critical memory locations!
//
// Parameter: ConfigAddr - Address of configuration register...
// BitPos - Bit position within config register to set/reset
// BitValue - Value to write to specified bit...
//
void SetConfigBit(unsigned int ConfigAddr, int BitPos, int BitValue) {
int Register = ReadConfigReg(ConfigAddr);
if (DEBUG) printf("RMW Read: %0x...\n", Register);
if (BitValue) {
Register = Register | (1<<BitPos);
} else {
Register = Register & ~(1<<BitPos);
}
if (DEBUG) printf("RMW Write: %0x...\n", Register);
SetConfigReg(ConfigAddr, Register);
}
//--------------------------------------------------------------------------------------
// FUNCTION: MYCOREID
//--------------------------------------------------------------------------------------
// return physical core ID of calling core
//--------------------------------------------------------------------------------------
int MYCOREID() {
#ifdef SCC
int tmp, x, y, z;
tmp=ReadConfigReg(CRB_OWN+MYTILEID);
x=(tmp>>3) & 0x0f; // bits 06:03
y=(tmp>>7) & 0x0f; // bits 10:07
z=(tmp ) & 0x07; // bits 02:00
return ( ( x + ( 6 * y ) ) * 2 ) + z; // True Processor ID!
#else
// the COREIDs are read into the main program in potentially random order.
// Each core can access its own Core ID. We simulate that by selecting
// the value in the list of coreids that corresponds to the sequence
// number of the OpenMP thread number
return RC_COREID[omp_get_thread_num()];
#endif
}
// readFpgaGrb allows to read a register value from the SIF FPGA register bank
// by passing the register bank address as specified in the SIF FPGA documentation.
// Some addresses have already been specified in config.h!
//
// Parameter: addr - Register address
// value ref - pointer to the unsigned int variable that will be
// updated with the result...
//
void readFpgaGrb(int addr, unsigned int* value) {
*value=ReadConfigReg(FPGA_BASE+addr);
}
