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/*
* 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.
*
* Authors: Ali Saidi
*/
#ifndef __ARCH_SPARC_TLB_HH__
#define __ARCH_SPARC_TLB_HH__
#include "arch/generic/tlb.hh"
#include "arch/sparc/asi.hh"
#include "arch/sparc/tlb_map.hh"
#include "base/logging.hh"
#include "mem/request.hh"
#include "params/SparcTLB.hh"
class ThreadContext;
class Packet;
namespace SparcISA
{
class TLB : public BaseTLB
{
// These faults need to be able to populate the tlb in SE mode.
friend class FastInstructionAccessMMUMiss;
friend class FastDataAccessMMUMiss;
// TLB state
protected:
// Only used when this is the data TLB.
uint64_t sfar;
uint64_t c0_tsb_ps0;
uint64_t c0_tsb_ps1;
uint64_t c0_config;
uint64_t cx_tsb_ps0;
uint64_t cx_tsb_ps1;
uint64_t cx_config;
uint64_t sfsr;
uint64_t tag_access;
protected:
TlbMap lookupTable;;
typedef TlbMap::iterator MapIter;
TlbEntry *tlb;
int size;
int usedEntries;
int lastReplaced;
uint64_t cacheState;
bool cacheValid;
std::list<TlbEntry*> freeList;
enum FaultTypes {
OtherFault = 0,
PrivViolation = 0x1,
SideEffect = 0x2,
AtomicToIo = 0x4,
IllegalAsi = 0x8,
LoadFromNfo = 0x10,
VaOutOfRange = 0x20,
VaOutOfRangeJmp = 0x40
};
enum ContextType {
Primary = 0,
Secondary = 1,
Nucleus = 2
};
enum TsbPageSize {
Ps0,
Ps1
};
public:
/** lookup an entry in the TLB based on the partition id, and real bit if
* real is true or the partition id, and context id if real is false.
* @param va the virtual address not shifted (e.g. bottom 13 bits are 0)
* @param paritition_id partition this entry is for
* @param real is this a real->phys or virt->phys translation
* @param context_id if this is virt->phys what context
* @param update_used should ew update the used bits in the
* entries on not useful if we are trying to do a va->pa without
* mucking with any state for a debug read for example.
* @return A pointer to a tlb entry
*/
TlbEntry *lookup(Addr va, int partition_id, bool real, int context_id = 0,
bool update_used = true);
/** Remove all entries from the TLB */
void flushAll() override;
protected:
/** Insert a PTE into the TLB. */
void insert(Addr vpn, int partition_id, int context_id, bool real,
const PageTableEntry& PTE, int entry = -1);
/** Given an entry id, read that tlb entries' tag. */
uint64_t TagRead(int entry);
/** Remove all non-locked entries from the tlb that match partition id. */
void demapAll(int partition_id);
/** Remove all entries that match a given context/partition id. */
void demapContext(int partition_id, int context_id);
/** Remve all entries that match a certain partition id, (contextid), and
* va). */
void demapPage(Addr va, int partition_id, bool real, int context_id);
/** Checks if the virtual address provided is a valid one. */
bool validVirtualAddress(Addr va, bool am);
void writeSfsr(bool write, ContextType ct,
bool se, FaultTypes ft, int asi);
void clearUsedBits();
void writeTagAccess(Addr va, int context);
Fault translateInst(const RequestPtr &req, ThreadContext *tc);
Fault translateData(const RequestPtr &req, ThreadContext *tc, bool write);
public:
typedef SparcTLBParams Params;
TLB(const Params *p);
void takeOverFrom(BaseTLB *otlb) override {}
void
demapPage(Addr vaddr, uint64_t asn) override
{
panic("demapPage(Addr) is not implemented.\n");
}
void dumpAll();
Fault translateAtomic(
const RequestPtr &req, ThreadContext *tc, Mode mode) override;
void translateTiming(
const RequestPtr &req, ThreadContext *tc,
Translation *translation, Mode mode) override;
Fault finalizePhysical(
const RequestPtr &req,
ThreadContext *tc, Mode mode) const override;
Cycles doMmuRegRead(ThreadContext *tc, Packet *pkt);
Cycles doMmuRegWrite(ThreadContext *tc, Packet *pkt);
void GetTsbPtr(ThreadContext *tc, Addr addr, int ctx, Addr *ptrs);
// Checkpointing
void serialize(CheckpointOut &cp) const override;
void unserialize(CheckpointIn &cp) override;
/** Give an entry id, read that tlb entries' tte */
uint64_t TteRead(int entry);
private:
void writeSfsr(Addr a, bool write, ContextType ct,
bool se, FaultTypes ft, int asi);
uint64_t MakeTsbPtr(TsbPageSize ps, uint64_t tag_access, uint64_t c0_tsb,
uint64_t c0_config, uint64_t cX_tsb, uint64_t cX_config);
TlbEntry *cacheEntry[2];
ASI cacheAsi[2];
};
}
#endif // __ARCH_SPARC_TLB_HH__
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