pma_checker.cc

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/*
 * Copyright (c) 2021 Huawei International
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 *
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 * to a hardware implementation of the functionality of the software
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#include "arch/riscv/pma_checker.hh"
 
#include "base/addr_range.hh"
#include "base/types.hh"
#include "mem/packet.hh"
#include "mem/request.hh"
#include "params/PMAChecker.hh"
#include "sim/sim_object.hh"
 
PMAChecker::PMAChecker(const Params &params) :
SimObject(params),
uncacheable(params.uncacheable.begin(), params.uncacheable.end())
{
}
 
void
PMAChecker::check(const RequestPtr &req)
{
    if (isUncacheable(req->getPaddr(), req->getSize())) {
        req->setFlags(Request::UNCACHEABLE | Request::STRICT_ORDER);
    }
}
 
bool
PMAChecker::isUncacheable(const AddrRange &range)
{
    for (auto const &uncacheable_range: uncacheable) {
        if (range.isSubset(uncacheable_range)) {
            return true;
        }
    }
    return false;
}
 
bool
PMAChecker::isUncacheable(const Addr &addr, const unsigned size)
{
    AddrRange range(addr, addr + size);
    return isUncacheable(range);
}
 
bool
PMAChecker::isUncacheable(PacketPtr pkt)
{
    return isUncacheable(pkt->getAddrRange());
}
 
void
PMAChecker::takeOverFrom(PMAChecker *old)
{
    uncacheable = old->uncacheable;
}