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diff --git a/src/dev/mips/malta_pchip.cc b/src/dev/mips/malta_pchip.cc
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+++ b/src/dev/mips/malta_pchip.cc
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+/*
+ * Copyright (c) 2004-2005 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
+ * Andrew Schultz
+ */
+
+/** @file
+ * Malta PChip (pci)
+ */
+
+#include <deque>
+#include <string>
+#include <vector>
+
+#include "base/trace.hh"
+#include "dev/mips/malta_pchip.hh"
+#include "dev/mips/maltareg.h"
+#include "dev/mips/malta.hh"
+#include "mem/packet.hh"
+#include "mem/packet_access.hh"
+#include "sim/system.hh"
+
+using namespace std;
+using namespace TheISA;
+
+MaltaPChip::MaltaPChip(const Params *p)
+: BasicPioDevice(p)
+{
+ pioSize = 0x1000;
+
+ for (int i = 0; i < 4; i++) {
+ wsba[i] = 0;
+ wsm[i] = 0;
+ tba[i] = 0;
+ }
+
+ // initialize pchip control register
+ pctl = (ULL(0x1) << 20) | (ULL(0x1) << 32) | (ULL(0x2) << 36);
+
+ //Set back pointer in malta
+ p->malta->pchip = this;
+}
+
+Tick
+MaltaPChip::read(PacketPtr pkt)
+{
+ assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
+
+ pkt->allocate();
+ Addr daddr = (pkt->getAddr() - pioAddr) >> 6;;
+ assert(pkt->getSize() == sizeof(uint64_t));
+
+
+ DPRINTF(Malta, "read va=%#x size=%d\n", pkt->getAddr(), pkt->getSize());
+
+ switch(daddr) {
+ case TSDEV_PC_WSBA0:
+ pkt->set(wsba[0]);
+ break;
+ case TSDEV_PC_WSBA1:
+ pkt->set(wsba[1]);
+ break;
+ case TSDEV_PC_WSBA2:
+ pkt->set(wsba[2]);
+ break;
+ case TSDEV_PC_WSBA3:
+ pkt->set(wsba[3]);
+ break;
+ case TSDEV_PC_WSM0:
+ pkt->set(wsm[0]);
+ break;
+ case TSDEV_PC_WSM1:
+ pkt->set(wsm[1]);
+ break;
+ case TSDEV_PC_WSM2:
+ pkt->set(wsm[2]);
+ break;
+ case TSDEV_PC_WSM3:
+ pkt->set(wsm[3]);
+ break;
+ case TSDEV_PC_TBA0:
+ pkt->set(tba[0]);
+ break;
+ case TSDEV_PC_TBA1:
+ pkt->set(tba[1]);
+ break;
+ case TSDEV_PC_TBA2:
+ pkt->set(tba[2]);
+ break;
+ case TSDEV_PC_TBA3:
+ pkt->set(tba[3]);
+ break;
+ case TSDEV_PC_PCTL:
+ pkt->set(pctl);
+ break;
+ case TSDEV_PC_PLAT:
+ panic("PC_PLAT not implemented\n");
+ case TSDEV_PC_RES:
+ panic("PC_RES not implemented\n");
+ case TSDEV_PC_PERROR:
+ pkt->set((uint64_t)0x00);
+ break;
+ case TSDEV_PC_PERRMASK:
+ pkt->set((uint64_t)0x00);
+ break;
+ case TSDEV_PC_PERRSET:
+ panic("PC_PERRSET not implemented\n");
+ case TSDEV_PC_TLBIV:
+ panic("PC_TLBIV not implemented\n");
+ case TSDEV_PC_TLBIA:
+ pkt->set((uint64_t)0x00); // shouldn't be readable, but linux
+ break;
+ case TSDEV_PC_PMONCTL:
+ panic("PC_PMONCTL not implemented\n");
+ case TSDEV_PC_PMONCNT:
+ panic("PC_PMONCTN not implemented\n");
+ default:
+ panic("Default in PChip Read reached reading 0x%x\n", daddr);
+ }
+ pkt->makeAtomicResponse();
+ return pioDelay;
+
+}
+
+Tick
+MaltaPChip::write(PacketPtr pkt)
+{
+ assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
+ Addr daddr = (pkt->getAddr() - pioAddr) >> 6;
+
+ assert(pkt->getSize() == sizeof(uint64_t));
+
+ DPRINTF(Malta, "write - va=%#x size=%d \n", pkt->getAddr(), pkt->getSize());
+
+ switch(daddr) {
+ case TSDEV_PC_WSBA0:
+ wsba[0] = pkt->get<uint64_t>();
+ break;
+ case TSDEV_PC_WSBA1:
+ wsba[1] = pkt->get<uint64_t>();
+ break;
+ case TSDEV_PC_WSBA2:
+ wsba[2] = pkt->get<uint64_t>();
+ break;
+ case TSDEV_PC_WSBA3:
+ wsba[3] = pkt->get<uint64_t>();
+ break;
+ case TSDEV_PC_WSM0:
+ wsm[0] = pkt->get<uint64_t>();
+ break;
+ case TSDEV_PC_WSM1:
+ wsm[1] = pkt->get<uint64_t>();
+ break;
+ case TSDEV_PC_WSM2:
+ wsm[2] = pkt->get<uint64_t>();
+ break;
+ case TSDEV_PC_WSM3:
+ wsm[3] = pkt->get<uint64_t>();
+ break;
+ case TSDEV_PC_TBA0:
+ tba[0] = pkt->get<uint64_t>();
+ break;
+ case TSDEV_PC_TBA1:
+ tba[1] = pkt->get<uint64_t>();
+ break;
+ case TSDEV_PC_TBA2:
+ tba[2] = pkt->get<uint64_t>();
+ break;
+ case TSDEV_PC_TBA3:
+ tba[3] = pkt->get<uint64_t>();
+ break;
+ case TSDEV_PC_PCTL:
+ pctl = pkt->get<uint64_t>();
+ break;
+ case TSDEV_PC_PLAT:
+ panic("PC_PLAT not implemented\n");
+ case TSDEV_PC_RES:
+ panic("PC_RES not implemented\n");
+ case TSDEV_PC_PERROR:
+ break;
+ case TSDEV_PC_PERRMASK:
+ panic("PC_PERRMASK not implemented\n");
+ case TSDEV_PC_PERRSET:
+ panic("PC_PERRSET not implemented\n");
+ case TSDEV_PC_TLBIV:
+ panic("PC_TLBIV not implemented\n");
+ case TSDEV_PC_TLBIA:
+ break; // value ignored, supposted to invalidate SG TLB
+ case TSDEV_PC_PMONCTL:
+ panic("PC_PMONCTL not implemented\n");
+ case TSDEV_PC_PMONCNT:
+ panic("PC_PMONCTN not implemented\n");
+ default:
+ panic("Default in PChip write reached reading 0x%x\n", daddr);
+
+ } // uint64_t
+
+ pkt->makeAtomicResponse();
+ return pioDelay;
+}
+
+#define DMA_ADDR_MASK ULL(0x3ffffffff)
+
+Addr
+MaltaPChip::translatePciToDma(Addr busAddr)
+{
+ // compare the address to the window base registers
+ uint64_t tbaMask = 0;
+ uint64_t baMask = 0;
+
+ uint64_t windowMask = 0;
+ uint64_t windowBase = 0;
+
+ uint64_t pteEntry = 0;
+
+ Addr pteAddr;
+ Addr dmaAddr;
+
+#if 0
+ DPRINTF(IdeDisk, "Translation for bus address: %#x\n", busAddr);
+ for (int i = 0; i < 4; i++) {
+ DPRINTF(IdeDisk, "(%d) base:%#x mask:%#x\n",
+ i, wsba[i], wsm[i]);
+
+ windowBase = wsba[i];
+ windowMask = ~wsm[i] & (ULL(0xfff) << 20);
+
+ if ((busAddr & windowMask) == (windowBase & windowMask)) {
+ DPRINTF(IdeDisk, "Would have matched %d (wb:%#x wm:%#x --> ba&wm:%#x wb&wm:%#x)\n",
+ i, windowBase, windowMask, (busAddr & windowMask),
+ (windowBase & windowMask));
+ }
+ }
+#endif
+
+ for (int i = 0; i < 4; i++) {
+
+ windowBase = wsba[i];
+ windowMask = ~wsm[i] & (ULL(0xfff) << 20);
+
+ if ((busAddr & windowMask) == (windowBase & windowMask)) {
+
+ if (wsba[i] & 0x1) { // see if enabled
+ if (wsba[i] & 0x2) { // see if SG bit is set
+ /** @todo
+ This currently is faked by just doing a direct
+ read from memory, however, to be realistic, this
+ needs to actually do a bus transaction. The process
+ is explained in the malta documentation on page
+ 10-12 and basically munges the address to look up a
+ PTE from a table in memory and then uses that mapping
+ to create an address for the SG page
+ */
+
+ tbaMask = ~(((wsm[i] & (ULL(0xfff) << 20)) >> 10) | ULL(0x3ff));
+ baMask = (wsm[i] & (ULL(0xfff) << 20)) | (ULL(0x7f) << 13);
+ pteAddr = (tba[i] & tbaMask) | ((busAddr & baMask) >> 10);
+
+ pioPort->readBlob(pteAddr, (uint8_t*)&pteEntry, sizeof(uint64_t));
+
+ dmaAddr = ((pteEntry & ~ULL(0x1)) << 12) | (busAddr & ULL(0x1fff));
+
+ } else {
+ baMask = (wsm[i] & (ULL(0xfff) << 20)) | ULL(0xfffff);
+ tbaMask = ~baMask;
+ dmaAddr = (tba[i] & tbaMask) | (busAddr & baMask);
+ }
+
+ return (dmaAddr & DMA_ADDR_MASK);
+ }
+ }
+ }
+
+ // if no match was found, then return the original address
+ return busAddr;
+}
+Addr
+MaltaPChip::calcConfigAddr(int bus, int dev, int func)
+{
+ assert(func < 8);
+ assert(dev < 32);
+ assert(bus == 0);
+
+ return MaltaPciBus0Config | (func << 8) | (dev << 11);
+}
+
+
+
+void
+MaltaPChip::serialize(std::ostream &os)
+{
+ SERIALIZE_SCALAR(pctl);
+ SERIALIZE_ARRAY(wsba, 4);
+ SERIALIZE_ARRAY(wsm, 4);
+ SERIALIZE_ARRAY(tba, 4);
+}
+
+void
+MaltaPChip::unserialize(Checkpoint *cp, const std::string &section)
+{
+ UNSERIALIZE_SCALAR(pctl);
+ UNSERIALIZE_ARRAY(wsba, 4);
+ UNSERIALIZE_ARRAY(wsm, 4);
+ UNSERIALIZE_ARRAY(tba, 4);
+}
+
+
+MaltaPChip *
+MaltaPChipParams::create()
+{
+ return new MaltaPChip(this);
+}
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