7155b8ba1e
Use the more flexible MMU translation generator which does not need to be told what page size to use, and which will be able to do flexible things like translate across varying page sizes. Change-Id: Ibfefc39d833f37bc35d703c505b193ea68988ab0 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/50760 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Matthew Poremba <matthew.poremba@amd.com> Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br> Maintainer: Gabe Black <gabe.black@gmail.com>
125 lines
4.6 KiB
C++
125 lines
4.6 KiB
C++
/*
|
|
* Copyright (c) 2011,2013 ARM Limited
|
|
* All rights reserved
|
|
*
|
|
* The license below extends only to copyright in the software and shall
|
|
* not be construed as granting a license to any other intellectual
|
|
* property including but not limited to intellectual property relating
|
|
* to a hardware implementation of the functionality of the software
|
|
* licensed hereunder. You may use the software subject to the license
|
|
* terms below provided that you ensure that this notice is replicated
|
|
* unmodified and in its entirety in all distributions of the software,
|
|
* modified or unmodified, in source code or in binary form.
|
|
*
|
|
* Copyright (c) 2006 The Regents of The University of Michigan
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met: redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer;
|
|
* redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution;
|
|
* neither the name of the copyright holders nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* Port object definitions.
|
|
*/
|
|
|
|
#include "mem/translating_port_proxy.hh"
|
|
|
|
#include "arch/generic/mmu.hh"
|
|
#include "base/chunk_generator.hh"
|
|
#include "cpu/base.hh"
|
|
#include "cpu/thread_context.hh"
|
|
#include "sim/system.hh"
|
|
|
|
namespace gem5
|
|
{
|
|
|
|
TranslatingPortProxy::TranslatingPortProxy(
|
|
ThreadContext *tc, Request::Flags _flags) :
|
|
PortProxy(tc, tc->getSystemPtr()->cacheLineSize()), _tc(tc), flags(_flags)
|
|
{}
|
|
|
|
bool
|
|
TranslatingPortProxy::tryOnBlob(BaseMMU::Mode mode, TranslationGenPtr gen,
|
|
std::function<void(const TranslationGen::Range &)> func) const
|
|
{
|
|
// Wether we're trying to get past a fault.
|
|
bool faulting = false;
|
|
for (const auto &range: *gen) {
|
|
// Was there a fault this time?
|
|
if (range.fault) {
|
|
// If there was a fault last time too, or the fixup this time
|
|
// fails, then the operation has failed.
|
|
if (faulting || !fixupRange(range, mode))
|
|
return false;
|
|
// This must be the first time we've tried this translation, so
|
|
// record that we're making a second attempt and continue.
|
|
faulting = true;
|
|
continue;
|
|
}
|
|
|
|
// Run func() on this successful translation.
|
|
faulting = false;
|
|
func(range);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
TranslatingPortProxy::tryReadBlob(Addr addr, void *p, int size) const
|
|
{
|
|
constexpr auto mode = BaseMMU::Read;
|
|
return tryOnBlob(mode, _tc->getMMUPtr()->translateFunctional(
|
|
addr, size, _tc, mode, flags),
|
|
[this, &p](const auto &range) {
|
|
PortProxy::readBlobPhys(range.paddr, flags, p, range.size);
|
|
p = static_cast<uint8_t *>(p) + range.size;
|
|
});
|
|
}
|
|
|
|
bool
|
|
TranslatingPortProxy::tryWriteBlob(
|
|
Addr addr, const void *p, int size) const
|
|
{
|
|
constexpr auto mode = BaseMMU::Write;
|
|
return tryOnBlob(mode, _tc->getMMUPtr()->translateFunctional(
|
|
addr, size, _tc, mode, flags),
|
|
[this, &p](const auto &range) {
|
|
PortProxy::writeBlobPhys(range.paddr, flags, p, range.size);
|
|
p = static_cast<const uint8_t *>(p) + range.size;
|
|
});
|
|
}
|
|
|
|
bool
|
|
TranslatingPortProxy::tryMemsetBlob(Addr addr, uint8_t v, int size) const
|
|
{
|
|
constexpr auto mode = BaseMMU::Write;
|
|
return tryOnBlob(mode, _tc->getMMUPtr()->translateFunctional(
|
|
addr, size, _tc, mode, flags),
|
|
[this, v](const auto &range) {
|
|
PortProxy::memsetBlobPhys(range.paddr, flags, v, range.size);
|
|
});
|
|
}
|
|
|
|
} // namespace gem5
|