sector_blk.cc

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#include "mem/cache/tags/sector_blk.hh"

#include <cassert>

#include "base/cprintf.hh"
#include "base/logging.hh"

void
SectorSubBlk::setSectorBlock(SectorBlk* sector_blk)
{
    assert(sector_blk != nullptr);
    _sectorBlk = sector_blk;
}

const SectorBlk*
SectorSubBlk::getSectorBlock() const
{
    return _sectorBlk;
}

void
SectorSubBlk::setSectorOffset(const int sector_offset)
{
    _sectorOffset = sector_offset;
}

int
SectorSubBlk::getSectorOffset() const
{
    return _sectorOffset;
}

Addr
SectorSubBlk::getTag() const
{
    return _sectorBlk->getTag();
}

void
SectorSubBlk::setValid()
{
    CacheBlk::setValid();
    _sectorBlk->validateSubBlk();
}

void
SectorSubBlk::setSecure()
{
    CacheBlk::setSecure();
    _sectorBlk->setSecure();
}

void
SectorSubBlk::invalidate()
{
    CacheBlk::invalidate();
    _sectorBlk->invalidateSubBlk();
}

void
SectorSubBlk::insert(const Addr tag, const bool is_secure,
                     const int src_master_ID, const uint32_t task_ID)
{
    // Make sure it is not overwriting another sector
    panic_if((_sectorBlk && _sectorBlk->isValid()) &&
             ((_sectorBlk->getTag() != tag) ||
              (_sectorBlk->isSecure() != is_secure)),
              "Overwriting valid sector!");

    CacheBlk::insert(tag, is_secure, src_master_ID, task_ID);

    // Set sector tag
    _sectorBlk->setTag(tag);
}

std::string
SectorSubBlk::print() const
{
    return csprintf("%s sector offset: %#x", CacheBlk::print(),
                    getSectorOffset());
}

SectorBlk::SectorBlk()
    : ReplaceableEntry(), _validCounter(0), _tag(MaxAddr), _secureBit(false)
{
}

bool
SectorBlk::isValid() const
{
    // If any of the blocks in the sector is valid, so is the sector
    return _validCounter > 0;
}

uint8_t
SectorBlk::getNumValid() const
{
    return _validCounter;
}

bool
SectorBlk::isSecure() const
{
    // If any of the valid blocks in the sector is secure, so is the sector
    return _secureBit;
}

void
SectorBlk::setTag(const Addr tag)
{
    _tag = tag;
}

Addr
SectorBlk::getTag() const
{
    return _tag;
}

void
SectorBlk::validateSubBlk()
{
    _validCounter++;
}

void
SectorBlk::invalidateSubBlk()
{
    // If all sub-blocks have been invalidated, the sector becomes invalid,
    // so clear secure bit
    if (--_validCounter == 0) {
        _secureBit = false;
    }
}

void
SectorBlk::setSecure()
{
    _secureBit = true;
}

void
SectorBlk::setPosition(const uint32_t set, const uint32_t way)
{
    ReplaceableEntry::setPosition(set, way);
    for (auto& blk : blks) {
        blk->setPosition(set, way);
    }
}