| /* |
| * Copyright (c) 2001-2005 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: Nathan Binkert |
| * Ali Saidi |
| * Steve Reinhardt |
| * Erik Hallnor |
| */ |
| |
| /** @file |
| * Mips Console Backdoor Definition |
| */ |
| #include <cstddef> |
| #include <string> |
| |
| #include "arch/mips/system.hh" |
| #include "base/inifile.hh" |
| #include "base/str.hh" |
| #include "base/trace.hh" |
| #include "cpu/base.hh" |
| #include "cpu/thread_context.hh" |
| #include "dev/mips/backdoor.hh" |
| #include "dev/platform.hh" |
| #include "dev/simple_disk.hh" |
| #include "dev/terminal.hh" |
| #include "mem/packet.hh" |
| #include "mem/packet_access.hh" |
| #include "mem/physical.hh" |
| #include "params/MipsBackdoor.hh" |
| #include "sim/sim_object.hh" |
| |
| |
| using namespace std; |
| using namespace MipsISA; |
| |
| MipsBackdoor::MipsBackdoor(const Params *p) |
| : BasicPioDevice(p), disk(p->disk), terminal(p->terminal), |
| system(p->system), cpu(p->cpu) |
| { |
| |
| pioSize = sizeof(struct MipsAccess); |
| |
| mipsAccess = new Access(); |
| mipsAccess->last_offset = pioSize - 1; |
| |
| mipsAccess->version = MIPS_ACCESS_VERSION; |
| mipsAccess->diskUnit = 1; |
| |
| mipsAccess->diskCount = 0; |
| mipsAccess->diskPAddr = 0; |
| mipsAccess->diskBlock = 0; |
| mipsAccess->diskOperation = 0; |
| mipsAccess->outputChar = 0; |
| mipsAccess->inputChar = 0; |
| bzero(mipsAccess->cpuStack, sizeof(mipsAccess->cpuStack)); |
| |
| } |
| |
| void |
| MipsBackdoor::startup() |
| { |
| system->setMipsAccess(pioAddr); |
| mipsAccess->numCPUs = system->getNumCPUs(); |
| mipsAccess->kernStart = MipsISA::Phys2K0Seg(system->getKernelStart()); |
| mipsAccess->kernEnd = MipsISA::Phys2K0Seg(system->getKernelEnd()); |
| mipsAccess->entryPoint = MipsISA::Phys2K0Seg(system->getKernelEntry()); |
| mipsAccess->mem_size = system->physmem->size(); |
| mipsAccess->cpuClock = cpu->frequency() / 1000000; // In MHz |
| mipsAccess->intrClockFrequency = params()->platform->intrFrequency(); |
| } |
| |
| Tick |
| MipsBackdoor::read(PacketPtr pkt) |
| { |
| |
| /** XXX Do we want to push the addr munging to a bus brige or something? So |
| * the device has it's physical address and then the bridge adds on whatever |
| * machine dependent address swizzle is required? |
| */ |
| assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize); |
| |
| Addr daddr = pkt->getAddr() - pioAddr; |
| |
| pkt->allocate(); |
| |
| switch (pkt->getSize()) |
| { |
| case sizeof(uint32_t): |
| switch (daddr) |
| { |
| case offsetof(MipsAccess, last_offset): |
| pkt->set(mipsAccess->last_offset); |
| break; |
| case offsetof(MipsAccess, version): |
| pkt->set(mipsAccess->version); |
| break; |
| case offsetof(MipsAccess, numCPUs): |
| pkt->set(mipsAccess->numCPUs); |
| break; |
| case offsetof(MipsAccess, intrClockFrequency): |
| pkt->set(mipsAccess->intrClockFrequency); |
| break; |
| case offsetof(MipsAccess, inputChar): |
| pkt->set(terminal->console_in()); |
| break; |
| case offsetof(MipsAccess, cpuClock): |
| pkt->set(mipsAccess->cpuClock); |
| break; |
| case offsetof(MipsAccess, mem_size): |
| pkt->set(mipsAccess->mem_size); |
| break; |
| case offsetof(MipsAccess, kernStart): |
| pkt->set(mipsAccess->kernStart); |
| break; |
| case offsetof(MipsAccess, kernEnd): |
| pkt->set(mipsAccess->kernEnd); |
| break; |
| case offsetof(MipsAccess, entryPoint): |
| pkt->set(mipsAccess->entryPoint); |
| break; |
| case offsetof(MipsAccess, diskUnit): |
| pkt->set(mipsAccess->diskUnit); |
| break; |
| case offsetof(MipsAccess, diskCount): |
| pkt->set(mipsAccess->diskCount); |
| break; |
| case offsetof(MipsAccess, diskPAddr): |
| pkt->set(mipsAccess->diskPAddr); |
| break; |
| case offsetof(MipsAccess, diskBlock): |
| pkt->set(mipsAccess->diskBlock); |
| break; |
| case offsetof(MipsAccess, diskOperation): |
| pkt->set(mipsAccess->diskOperation); |
| break; |
| case offsetof(MipsAccess, outputChar): |
| pkt->set(mipsAccess->outputChar); |
| break; |
| default: |
| int cpunum = (daddr - offsetof(MipsAccess, cpuStack)) / |
| sizeof(mipsAccess->cpuStack[0]); |
| |
| if (cpunum >= 0 && cpunum < 64) |
| pkt->set(mipsAccess->cpuStack[cpunum]); |
| else |
| panic("Unknown 32bit access, %#x\n", daddr); |
| } |
| //DPRINTF(MipsBackdoor, "read: offset=%#x val=%#x\n", daddr, |
| // pkt->get<uint64_t>()); |
| break; |
| default: |
| pkt->setBadAddress(); |
| } |
| |
| pkt->makeAtomicResponse(); |
| return pioDelay; |
| } |
| |
| Tick |
| MipsBackdoor::write(PacketPtr pkt) |
| { |
| assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize); |
| Addr daddr = pkt->getAddr() - pioAddr; |
| |
| uint32_t val = pkt->get<uint32_t>(); |
| assert(pkt->getSize() == sizeof(uint32_t)); |
| switch (daddr) { |
| case offsetof(MipsAccess, diskUnit): |
| mipsAccess->diskUnit = val; |
| break; |
| |
| case offsetof(MipsAccess, diskCount): |
| mipsAccess->diskCount = val; |
| break; |
| |
| case offsetof(MipsAccess, diskPAddr): |
| mipsAccess->diskPAddr = val; |
| break; |
| |
| case offsetof(MipsAccess, diskBlock): |
| mipsAccess->diskBlock = val; |
| break; |
| |
| case offsetof(MipsAccess, diskOperation): |
| if (val == 0x13) |
| disk->read(mipsAccess->diskPAddr, mipsAccess->diskBlock, |
| mipsAccess->diskCount); |
| else |
| panic("Invalid disk operation!"); |
| |
| break; |
| |
| case offsetof(MipsAccess, outputChar): |
| terminal->out((char)(val & 0xff)); |
| break; |
| |
| default: |
| int cpunum = (daddr - offsetof(MipsAccess, cpuStack)) / |
| sizeof(mipsAccess->cpuStack[0]); |
| warn("%d: Trying to launch CPU number %d!", curTick, cpunum); |
| assert(val > 0 && "Must not access primary cpu"); |
| if (cpunum >= 0 && cpunum < 64) |
| mipsAccess->cpuStack[cpunum] = val; |
| else |
| panic("Unknown 32bit access, %#x\n", daddr); |
| } |
| |
| pkt->makeAtomicResponse(); |
| |
| return pioDelay; |
| } |
| |
| void |
| MipsBackdoor::Access::serialize(ostream &os) |
| { |
| SERIALIZE_SCALAR(last_offset); |
| SERIALIZE_SCALAR(version); |
| SERIALIZE_SCALAR(numCPUs); |
| SERIALIZE_SCALAR(mem_size); |
| SERIALIZE_SCALAR(cpuClock); |
| SERIALIZE_SCALAR(intrClockFrequency); |
| SERIALIZE_SCALAR(kernStart); |
| SERIALIZE_SCALAR(kernEnd); |
| SERIALIZE_SCALAR(entryPoint); |
| SERIALIZE_SCALAR(diskUnit); |
| SERIALIZE_SCALAR(diskCount); |
| SERIALIZE_SCALAR(diskPAddr); |
| SERIALIZE_SCALAR(diskBlock); |
| SERIALIZE_SCALAR(diskOperation); |
| SERIALIZE_SCALAR(outputChar); |
| SERIALIZE_SCALAR(inputChar); |
| SERIALIZE_ARRAY(cpuStack,64); |
| } |
| |
| void |
| MipsBackdoor::Access::unserialize(Checkpoint *cp, const std::string §ion) |
| { |
| UNSERIALIZE_SCALAR(last_offset); |
| UNSERIALIZE_SCALAR(version); |
| UNSERIALIZE_SCALAR(numCPUs); |
| UNSERIALIZE_SCALAR(mem_size); |
| UNSERIALIZE_SCALAR(cpuClock); |
| UNSERIALIZE_SCALAR(intrClockFrequency); |
| UNSERIALIZE_SCALAR(kernStart); |
| UNSERIALIZE_SCALAR(kernEnd); |
| UNSERIALIZE_SCALAR(entryPoint); |
| UNSERIALIZE_SCALAR(diskUnit); |
| UNSERIALIZE_SCALAR(diskCount); |
| UNSERIALIZE_SCALAR(diskPAddr); |
| UNSERIALIZE_SCALAR(diskBlock); |
| UNSERIALIZE_SCALAR(diskOperation); |
| UNSERIALIZE_SCALAR(outputChar); |
| UNSERIALIZE_SCALAR(inputChar); |
| UNSERIALIZE_ARRAY(cpuStack, 64); |
| } |
| |
| void |
| MipsBackdoor::serialize(ostream &os) |
| { |
| mipsAccess->serialize(os); |
| } |
| |
| void |
| MipsBackdoor::unserialize(Checkpoint *cp, const std::string §ion) |
| { |
| mipsAccess->unserialize(cp, section); |
| } |
| |
| MipsBackdoor * |
| MipsBackdoorParams::create() |
| { |
| return new MipsBackdoor(this); |
| } |
