gem5/dev/alpha_console.cc
Nathan Binkert 318e0c93ed add support for simple character input via the system console
dev/alpha_access.h:
    -  use our standard types instead of this extra typedef
    -  advance the ALPHA_ACCESS version since the interface
    has changed.  *this means you need a new console binary*
    -  shuffle a couple things around to pack the data structure
    a bit better
    -  add a placeholder for character input
dev/alpha_console.cc:
    Clean up the read code path a bit and add support for character
    input via the console

    Clean up the write path and use a switch instead of a bunch of
    if statements

--HG--
extra : convert_revision : a1a5bc8fed9ec9c4c46548fdf79604661668b81a
2003-12-22 17:51:14 -05:00

280 lines
8.2 KiB
C++

/*
* Copyright (c) 2003 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
* System Console Definition
*/
#include <cstddef>
#include <cstdio>
#include <string>
#include "base/inifile.hh"
#include "base/str.hh" // for to_number()
#include "base/trace.hh"
#include "cpu/base_cpu.hh"
#include "cpu/exec_context.hh"
#include "dev/alpha_console.hh"
#include "dev/console.hh"
#include "dev/simple_disk.hh"
#include "dev/tlaser_clock.hh"
#include "mem/functional_mem/memory_control.hh"
#include "sim/builder.hh"
#include "sim/system.hh"
using namespace std;
AlphaConsole::AlphaConsole(const string &name, SimConsole *cons,
SimpleDisk *d, int size, System *system,
BaseCPU *cpu, TlaserClock *clock, int num_cpus,
Addr addr, Addr mask, MemoryController *mmu)
: MmapDevice(name, addr, mask, mmu), disk(d), console(cons)
{
consoleData = new uint8_t[size];
memset(consoleData, 0, size);
alphaAccess->last_offset = size - 1;
alphaAccess->kernStart = system->getKernelStart();
alphaAccess->kernEnd = system->getKernelEnd();
alphaAccess->entryPoint = system->getKernelEntry();
alphaAccess->version = ALPHA_ACCESS_VERSION;
alphaAccess->numCPUs = num_cpus;
alphaAccess->mem_size = system->physmem->getSize();
alphaAccess->cpuClock = cpu->getFreq() / 1000000;
alphaAccess->intrClockFrequency = clock->frequency();
alphaAccess->diskUnit = 1;
}
Fault
AlphaConsole::read(MemReqPtr req, uint8_t *data)
{
memset(data, 0, req->size);
uint64_t val;
Addr daddr = req->paddr & addr_mask;
switch (daddr) {
case offsetof(AlphaAccess, inputChar):
val = console->in();
break;
default:
val = *(uint64_t *)(consoleData + daddr);
break;
}
DPRINTF(AlphaConsole, "read: offset=%#x val=%#x\n", daddr, val);
switch (req->size) {
case sizeof(uint32_t):
*(uint32_t *)data = (uint32_t)val;
break;
case sizeof(uint64_t):
*(uint64_t *)data = val;
break;
default:
return Machine_Check_Fault;
}
return No_Fault;
}
Fault
AlphaConsole::write(MemReqPtr req, const uint8_t *data)
{
uint64_t val;
switch (req->size) {
case sizeof(uint32_t):
val = *(uint32_t *)data;
break;
case sizeof(uint64_t):
val = *(uint64_t *)data;
break;
default:
return Machine_Check_Fault;
}
Addr daddr = req->paddr & addr_mask;
ExecContext *other_xc;
switch (daddr) {
case offsetof(AlphaAccess, diskUnit):
alphaAccess->diskUnit = val;
break;
case offsetof(AlphaAccess, diskCount):
alphaAccess->diskCount = val;
break;
case offsetof(AlphaAccess, diskPAddr):
alphaAccess->diskPAddr = val;
break;
case offsetof(AlphaAccess, diskBlock):
alphaAccess->diskBlock = val;
break;
case offsetof(AlphaAccess, diskOperation):
if (val == 0x13)
disk->read(alphaAccess->diskPAddr, alphaAccess->diskBlock,
alphaAccess->diskCount);
else
panic("Invalid disk operation!");
break;
case offsetof(AlphaAccess, outputChar):
console->out((char)(val & 0xff), false);
break;
case offsetof(AlphaAccess, bootStrapImpure):
alphaAccess->bootStrapImpure = val;
break;
case offsetof(AlphaAccess, bootStrapCPU):
warn("%d: Trying to launch another CPU!", curTick);
assert(val > 0 && "Must not access primary cpu");
other_xc = req->xc->system->execContexts[val];
other_xc->regs.intRegFile[16] = val;
other_xc->regs.ipr[TheISA::IPR_PALtemp16] = val;
other_xc->regs.intRegFile[0] = val;
other_xc->regs.intRegFile[30] = alphaAccess->bootStrapImpure;
other_xc->activate(); //Start the cpu
break;
default:
return Machine_Check_Fault;
}
return No_Fault;
}
void
AlphaAccess::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_SCALAR(bootStrapImpure);
SERIALIZE_SCALAR(bootStrapCPU);
}
void
AlphaAccess::unserialize(Checkpoint *cp, const std::string &section)
{
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_SCALAR(bootStrapImpure);
UNSERIALIZE_SCALAR(bootStrapCPU);
}
void
AlphaConsole::serialize(ostream &os)
{
alphaAccess->serialize(os);
}
void
AlphaConsole::unserialize(Checkpoint *cp, const std::string &section)
{
alphaAccess->unserialize(cp, section);
}
BEGIN_DECLARE_SIM_OBJECT_PARAMS(AlphaConsole)
SimObjectParam<SimConsole *> sim_console;
SimObjectParam<SimpleDisk *> disk;
Param<int> size;
Param<int> num_cpus;
SimObjectParam<MemoryController *> mmu;
Param<Addr> addr;
Param<Addr> mask;
SimObjectParam<System *> system;
SimObjectParam<BaseCPU *> cpu;
SimObjectParam<TlaserClock *> clock;
END_DECLARE_SIM_OBJECT_PARAMS(AlphaConsole)
BEGIN_INIT_SIM_OBJECT_PARAMS(AlphaConsole)
INIT_PARAM(sim_console, "The Simulator Console"),
INIT_PARAM(disk, "Simple Disk"),
INIT_PARAM_DFLT(size, "AlphaConsole size", sizeof(AlphaAccess)),
INIT_PARAM_DFLT(num_cpus, "Number of CPU's", 1),
INIT_PARAM(mmu, "Memory Controller"),
INIT_PARAM(addr, "Device Address"),
INIT_PARAM(mask, "Address Mask"),
INIT_PARAM(system, "system object"),
INIT_PARAM(cpu, "Processor"),
INIT_PARAM(clock, "Turbolaser Clock")
END_INIT_SIM_OBJECT_PARAMS(AlphaConsole)
CREATE_SIM_OBJECT(AlphaConsole)
{
return new AlphaConsole(getInstanceName(), sim_console,
disk, size, system,
cpu, clock, num_cpus,
addr, mask, mmu);
}
REGISTER_SIM_OBJECT("AlphaConsole", AlphaConsole)