/*
 * Copyright (c) 2007 MIPS Technologies, Inc.
 * 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: Jaidev Patwardhan
 */

#ifndef __ARCH_RISCV_PRA_CONSTANTS_HH__
#define __ARCH_RISCV_PRA_CONSTANTS_HH__

#include "arch/riscv/types.hh"
#include "base/bitunion.hh"

namespace RiscvISA
{

BitUnion32(IndexReg)
    Bitfield<31> p;
    // Need to figure out how to put in the TLB specific bits here
    // For now, we assume that the entire length is used by the index
    // field In reality, Index_HI = N-1, where
    // N = Ceiling(log2(TLB Entries))
    Bitfield<30, 0> index;
EndBitUnion(IndexReg)

BitUnion32(RandomReg)
    // This has a problem similar to the IndexReg index field. We'll keep
    // both consistent at 30 for now
    Bitfield<30, 0> random;
EndBitUnion(RandomReg)

BitUnion64(EntryLoReg)
    Bitfield<63, 30> fill;
    Bitfield<29, 6>  pfn;   // Page frame number
    Bitfield<5,  3>  c;     // Coherency attribute
    Bitfield<2>      d;     // Dirty Bit
    Bitfield<1>      v;     // Valid Bit
    Bitfield<0>      g;     // Global Bit
EndBitUnion(EntryLoReg)

BitUnion64(ContextReg)
    Bitfield<63, 23> pteBase;
    Bitfield<22, 4>  badVPN2;
    // Bits 3-0 are 0
EndBitUnion(ContextReg)

BitUnion32(PageMaskReg)
    // Bits 31-29 are 0
    Bitfield<28, 13> mask;
    Bitfield<12, 11> maskx;
    // Bits 10-0 are zero
EndBitUnion(PageMaskReg)

BitUnion32(PageGrainReg)
    Bitfield<31, 30> aseUp;
    Bitfield<29>     elpa;
    Bitfield<28>     esp;
    // Bits 27-13 are zeros
    Bitfield<12, 8>  aseDn;
    // Bits 7-0 are zeros
EndBitUnion(PageGrainReg)

BitUnion32(WiredReg)
    // See note on Index register above
    Bitfield<30, 0> wired;
EndBitUnion(WiredReg)

BitUnion32(HWREnaReg)
    Bitfield<31, 30> impl;
    Bitfield<3,  0>  mask;
EndBitUnion(HWREnaReg)

BitUnion64(EntryHiReg)
    Bitfield<63, 62> r;
    Bitfield<61, 40> fill;
    Bitfield<39, 13> vpn2;
    Bitfield<12, 11> vpn2x;
    Bitfield<7,  0>  asid;
EndBitUnion(EntryHiReg)

BitUnion32(StatusReg)
    SubBitUnion(cu, 31, 28)
        Bitfield<31> cu3;
        Bitfield<30> cu2;
        Bitfield<29> cu1;
        Bitfield<28> cu0;
    EndSubBitUnion(cu)
    Bitfield<27>     rp;
    Bitfield<26>     fr;
    Bitfield<25>     re;
    Bitfield<24>     mx;
    Bitfield<23>     px;
    Bitfield<22>     bev;
    Bitfield<21>     ts;
    Bitfield<20>     sr;
    Bitfield<19>     nmi;
    // Bit 18 is zero
    Bitfield<17, 16> impl;
    Bitfield<15, 10> ipl;
    SubBitUnion(im, 15, 8)
        Bitfield<15> im7;
        Bitfield<14> im6;
        Bitfield<13> im5;
        Bitfield<12> im4;
        Bitfield<11> im3;
        Bitfield<10> im2;
        Bitfield<9>  im1;
        Bitfield<8>  im0;
    EndSubBitUnion(im)
    Bitfield<7>      kx;
    Bitfield<6>      sx;
    Bitfield<5>      ux;
    Bitfield<4,  3>  ksu;
    Bitfield<4>      um;
    Bitfield<3>      r0;
    Bitfield<2>      erl;
    Bitfield<1>      exl;
    Bitfield<0>      ie;
EndBitUnion(StatusReg)

BitUnion32(IntCtlReg)
    Bitfield<31, 29> ipti;
    Bitfield<28, 26> ippci;
    // Bits 26-10 are zeros
    Bitfield<9,  5>  vs;
    // Bits 4-0 are zeros
EndBitUnion(IntCtlReg)

BitUnion32(SRSCtlReg)
    // Bits 31-30 are zeros
    Bitfield<29, 26> hss;
    // Bits 25-22 are zeros
    Bitfield<21, 18> eicss;
    // Bits 17-16 are zeros
    Bitfield<15, 12> ess;
    // Bits 11-10 are zeros
    Bitfield<9,  6>  pss;
    // Bits 5-4 are zeros
    Bitfield<3,  0>  css;
EndBitUnion(SRSCtlReg)

BitUnion32(SRSMapReg)
    Bitfield<31, 28> ssv7;
    Bitfield<27, 24> ssv6;
    Bitfield<23, 20> ssv5;
    Bitfield<19, 16> ssv4;
    Bitfield<15, 12> ssv3;
    Bitfield<11, 8>  ssv2;
    Bitfield<7,  4>  ssv1;
    Bitfield<3,  0>  ssv0;
EndBitUnion(SRSMapReg)

BitUnion32(CauseReg)
    Bitfield<31>     bd;
    Bitfield<30>     ti;
    Bitfield<29, 28> ce;
    Bitfield<27>     dc;
    Bitfield<26>     pci;
    // Bits 25-24 are zeros
    Bitfield<23>     iv;
    Bitfield<22>     wp;
    // Bits 21-16 are zeros
    Bitfield<15, 10> ripl;
    SubBitUnion(ip, 15, 8)
        Bitfield<15> ip7;
        Bitfield<14> ip6;
        Bitfield<13> ip5;
        Bitfield<12> ip4;
        Bitfield<11> ip3;
        Bitfield<10> ip2;
        Bitfield<9>  ip1;
        Bitfield<8>  ip0;
    EndSubBitUnion(ip);
    // Bit 7 is zero
    Bitfield<6,  2>  excCode;
    // Bits 1-0 are zeros
EndBitUnion(CauseReg)

BitUnion32(PRIdReg)
    Bitfield<31, 24> coOp;
    Bitfield<23, 16> coId;
    Bitfield<15, 8>  procId;
    Bitfield<7,  0>  rev;
EndBitUnion(PRIdReg)

BitUnion32(EBaseReg)
    // Bit 31 is one
    // Bit 30 is zero
    Bitfield<29, 12> exceptionBase;
    // Bits 11-10 are zeros
    Bitfield<9,  9>  cpuNum;
EndBitUnion(EBaseReg)

BitUnion32(ConfigReg)
    Bitfield<31>     m;
    Bitfield<30, 28> k23;
    Bitfield<27, 25> ku;
    Bitfield<24, 16> impl;
    Bitfield<15>     be;
    Bitfield<14, 13> at;
    Bitfield<12, 10> ar;
    Bitfield<9,  7>  mt;
    // Bits 6-4 are zeros
    Bitfield<3>      vi;
    Bitfield<2,  0>  k0;
EndBitUnion(ConfigReg)

BitUnion32(Config1Reg)
    Bitfield<31>     m;
    Bitfield<30, 25> mmuSize;
    Bitfield<24, 22> is;
    Bitfield<21, 19> il;
    Bitfield<18, 16> ia;
    Bitfield<15, 13> ds;
    Bitfield<12, 10> dl;
    Bitfield<9,  7>  da;
    Bitfield<6>      c2;
    Bitfield<5>      md;
    Bitfield<4>      pc;
    Bitfield<3>      wr;
    Bitfield<2>      ca;
    Bitfield<1>      ep;
    Bitfield<0>      fp;
EndBitUnion(Config1Reg)

BitUnion32(Config2Reg)
    Bitfield<31>     m;
    Bitfield<30, 28> tu;
    Bitfield<27, 24> ts;
    Bitfield<23, 20> tl;
    Bitfield<19, 16> ta;
    Bitfield<15, 12> su;
    Bitfield<11, 8>  ss;
    Bitfield<7,  4>  sl;
    Bitfield<3,  0>  sa;
EndBitUnion(Config2Reg)

BitUnion32(Config3Reg)
    Bitfield<31> m;
    // Bits 30-11 are zeros
    Bitfield<10> dspp;
    // Bits 9-8 are zeros
    Bitfield<7>  lpa;
    Bitfield<6>  veic;
    Bitfield<5>  vint;
    Bitfield<4>  sp;
    // Bit 3 is zero
    Bitfield<2>  mt;
    Bitfield<1>  sm;
    Bitfield<0>  tl;
EndBitUnion(Config3Reg)

BitUnion64(WatchLoReg)
    Bitfield<63, 3> vaddr;
    Bitfield<2>     i;
    Bitfield<1>     r;
    Bitfield<0>     w;
EndBitUnion(WatchLoReg)

BitUnion32(WatchHiReg)
    Bitfield<31>     m;
    Bitfield<30>     g;
    // Bits 29-24 are zeros
    Bitfield<23, 16> asid;
    // Bits 15-12 are zeros
    Bitfield<11, 3>  mask;
    Bitfield<2>      i;
    Bitfield<1>      r;
    Bitfield<0>      w;
EndBitUnion(WatchHiReg)

BitUnion32(PerfCntCtlReg)
    Bitfield<31>    m;
    Bitfield<30>    w;
    // Bits 29-11 are zeros
    Bitfield<10, 5> event;
    Bitfield<4>     ie;
    Bitfield<3>     u;
    Bitfield<2>     s;
    Bitfield<1>     k;
    Bitfield<0>     exl;
EndBitUnion(PerfCntCtlReg)

BitUnion32(CacheErrReg)
    Bitfield<31>     er;
    Bitfield<30>     ec;
    Bitfield<29>     ed;
    Bitfield<28>     et;
    Bitfield<27>     es;
    Bitfield<26>     ee;
    Bitfield<25>     eb;
    Bitfield<24, 22> impl;
    Bitfield<22, 0>  index;
EndBitUnion(CacheErrReg)

BitUnion32(TagLoReg)
    Bitfield<31, 8> pTagLo;
    Bitfield<7,  6> pState;
    Bitfield<5>     l;
    Bitfield<4,  3> impl;
    // Bits 2-1 are zeros
    Bitfield<0>     p;
EndBitUnion(TagLoReg)

} // namespace RiscvISA

#endif