Virtex5Assembler.cpp

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// Torc - Copyright 2011-2013 University of Southern California.  All Rights Reserved.
// $HeadURL: https://svn.east.isi.edu/torc/trunk/src/torc/bitstream/assembler/lut/parser.yy $
// $Id: parser.yy 1303 2013-02-25 23:18:16Z nsteiner $

// This program is free software: you can redistribute it and/or modify it under the terms of the 
// GNU General Public License as published by the Free Software Foundation, either version 3 of the 
// License, or (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See 
// the GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License along with this program.  If 
// not, see <http://www.gnu.org/licenses/>.

#include "torc/bitstream/assembler/Virtex5Assembler.hpp"

namespace torc {
namespace bitstream {

/// \details Store frame data and bit offset for given tile index
void Virtex5Assembler::initializeFrameDataForTile(TileIndex tileIndex) {
    const TileInfo& tileInfo = mTiles.getTileInfo(tileIndex);

    const TileRow &tileRow = tileInfo.getRow();
    const TileCol &tileCol = tileInfo.getCol();

    torc::bitstream::Bitstream * bitstreamPtr = mBitstreamPtr.get();
    torc::bitstream::Virtex5 *virtex5BitStream =
        dynamic_cast<torc::bitstream::Virtex5 *> (bitstreamPtr);

    uint32_t bitIndexBegin = 0, bitIndexEnd = 0;

    uint32_t primaryXdlCol = virtex5BitStream->getPrimaryXdlColumn(tileCol);

    mCurrFrameBlocks = virtex5BitStream->getXdlFrames(tileRow, primaryXdlCol, bitIndexBegin,
        bitIndexEnd);
    
    // Call getXdlFrames with original column to get bit index offset
    virtex5BitStream->getXdlFrames(tileRow, tileCol, bitIndexBegin,
        bitIndexEnd);
    // Each frame covers the full height of clock region which contains many rows of tiles.
    // The library contains configuration bits only for the first row. So the word index has to
    // be offset to reach the correct row. The bit index remains same across rows.
    /// \todo Check for ordering mismatch between this and the library generation code.
    mCurrWordOffset = 0;
    if(bitIndexBegin != bitIndexEnd) {
        mCurrWordOffset = virtex5BitStream->getFrameLength() - (bitIndexEnd >> 5); // eFrameLength is number of words in a frame
//      mCurrWordOffset = bitIndexBegin >> 5;
    }
}

}
}