network_utils.cpp

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//  *
//  *                       cloudFPGA
//  *    =============================================
//  *     Created: Apr 2019
//  *     Authors: FAB, WEI, NGL
//  *
//  *     Description:
//  *        This file contains network types and functions that are shared
//  *        across HLS cores.
//  *
 
#include <stdint.h>
#include "ap_int.h"
#include "ap_utils.h"
#include <hls_stream.h>
#include <queue>
#include <string>
#include "network_utils.hpp"
#include "NTS/AxisRaw.hpp"
 
 
#define UINT8  ap_uint<8>
#define UINT32 ap_uint<32>
 
UINT32 bigEndianToInteger(UINT8 *buffer, int lsb)
{
  UINT32 tmp = 0;
  tmp  = ((UINT32) buffer[lsb + 0]); 
  tmp |= ((UINT32) buffer[lsb + 1]) << 8; 
  tmp |= ((UINT32) buffer[lsb + 2]) << 16; 
  tmp |= ((UINT32) buffer[lsb + 3]) << 24; 
 
  //printf("LSB: %#1x, return: %#04x\n",(UINT8) buffer[lsb + 3], (UINT32) tmp);
 
  return tmp;
}
 
void integerToBigEndian(UINT32 n, UINT8 *bytes)
{
  bytes[3] = (n >> 24) & 0xFF;
  bytes[2] = (n >> 16) & 0xFF;
  bytes[1] = (n >> 8) & 0xFF;
  bytes[0] = n & 0xFF;
}
 
 
 
/* MOVED to nts_utils.hpp
   ap_uint<16> byteSwap16(ap_uint<16> inputVector) {
   return (inputVector.range(7,0), inputVector(15, 8));
   }
   */
 
 
/* MOVED to nts_utils.hpp
   ap_uint<32> byteSwap32(ap_uint<32> inputVector) {
   return (inputVector.range( 7, 0), inputVector(15,  8),
   inputVector.range(23,16), inputVector(31, 24));
   }
   */
 
 
ap_uint<4> keepToLen(ap_uint<8> keepValue) {
  ap_uint<4> count = 0;
  switch(keepValue){
    case 0x01: count = 1; break;
    case 0x03: count = 2; break;
    case 0x07: count = 3; break;
    case 0x0F: count = 4; break;
    case 0x1F: count = 5; break;
    case 0x3F: count = 6; break;
    case 0x7F: count = 7; break;
    case 0xFF: count = 8; break;
  }
  return count;
}
 
 
ap_uint<8> lenToKeep(ap_uint<4> noValidBytes) {
  ap_uint<8> keep = 0;
 
  switch(noValidBytes) {
    case 1: keep = 0x01; break;
    case 2: keep = 0x03; break;
    case 3: keep = 0x07; break;
    case 4: keep = 0x0F; break;
    case 5: keep = 0x1F; break;
    case 6: keep = 0x3F; break;
    case 7: keep = 0x7F; break;
    case 8: keep = 0xFF; break;
  }
  return keep;
}