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Add support for all devices to get requests from a timing memory bus.

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In the future, this can be used for actual data, but for now, it's
so that devices can respond to timing accesses properly.  This way,
an uncached access on a bus further away will take longer to respond.

dev/alpha_console.cc:
dev/alpha_console.hh:
    suport the separate IO bus

--HG--
extra : convert_revision : ececb70f5febfd00231f6e406f93b2a79be01261
This commit is contained in:
Nathan Binkert 2004-02-11 16:07:55 -05:00
parent 5e82f8d84c
commit cc53465cd5
4 changed files with 142 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

31
dev/alpha_console.cc
View file

@ -43,6 +43,9 @@
#include "dev/console.hh"
#include "dev/simple_disk.hh"
#include "dev/tlaser_clock.hh"
#include "mem/bus/bus.hh"
#include "mem/bus/pio_interface.hh"
#include "mem/bus/pio_interface_impl.hh"
#include "mem/functional_mem/memory_control.hh"
#include "sim/builder.hh"
#include "sim/system.hh"
@ -51,11 +54,18 @@ using namespace std;
AlphaConsole::AlphaConsole(const string &name, SimConsole *cons, SimpleDisk *d,
System *system, BaseCPU *cpu, TlaserClock *clock,
int num_cpus, MemoryController *mmu, Addr a)
: FunctionalMemory(name), disk(d), console(cons), addr(a)
int num_cpus, MemoryController *mmu, Addr a,
HierParams *hier, Bus *bus)
: PioDevice(name), disk(d), console(cons), addr(a)
{
mmu->add_child(this, Range<Addr>(addr, addr + size));
if (bus) {
pioInterface = newPioInterface(name, hier, bus, this,
&AlphaConsole::cacheAccess);
pioInterface->setAddrRange(addr, addr + size);
}
consoleData = new uint8_t[size];
memset(consoleData, 0, size);
@ -183,6 +193,12 @@ AlphaConsole::write(MemReqPtr &req, const uint8_t *data)
return No_Fault;
}
Tick
AlphaConsole::cacheAccess(MemReqPtr &req)
{
return curTick + 1000;
}
void
AlphaAccess::serialize(ostream &os)
{
@ -251,6 +267,8 @@ BEGIN_DECLARE_SIM_OBJECT_PARAMS(AlphaConsole)
SimObjectParam<System *> system;
SimObjectParam<BaseCPU *> cpu;
SimObjectParam<TlaserClock *> clock;
SimObjectParam<Bus*> io_bus;
SimObjectParam<HierParams *> hier;
END_DECLARE_SIM_OBJECT_PARAMS(AlphaConsole)
@ -263,14 +281,17 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(AlphaConsole)
INIT_PARAM(addr, "Device Address"),
INIT_PARAM(system, "system object"),
INIT_PARAM(cpu, "Processor"),
INIT_PARAM(clock, "Turbolaser Clock")
INIT_PARAM(clock, "Turbolaser Clock"),
INIT_PARAM_DFLT(io_bus, "The IO Bus to attach to", NULL),
INIT_PARAM_DFLT(hier, "Hierarchy global variables", &defaultHierParams)
END_INIT_SIM_OBJECT_PARAMS(AlphaConsole)
CREATE_SIM_OBJECT(AlphaConsole)
{
return new AlphaConsole(getInstanceName(), sim_console, disk,
system, cpu, clock, num_cpus, mmu, addr);
return new AlphaConsole(getInstanceName(), sim_console, disk,
system, cpu, clock, num_cpus, mmu,
addr, hier, io_bus);
}
REGISTER_SIM_OBJECT("AlphaConsole", AlphaConsole)

10
dev/alpha_console.hh
View file

@ -35,7 +35,7 @@
#include "base/range.hh"
#include "dev/alpha_access.h"
#include "mem/functional_mem/functional_memory.hh"
#include "dev/io_device.hh"
#include "sim/host.hh"
class BaseCPU;
@ -69,7 +69,7 @@ class SimpleDisk;
* primarily used doing boot before the kernel has loaded its device
* drivers.
*/
class AlphaConsole : public FunctionalMemory
class AlphaConsole : public PioDevice
{
protected:
union {
@ -90,7 +90,8 @@ class AlphaConsole : public FunctionalMemory
/** Standard Constructor */
AlphaConsole(const std::string &name, SimConsole *cons, SimpleDisk *d,
System *system, BaseCPU *cpu, TlaserClock *clock,
int num_cpus, MemoryController *mmu, Addr addr);
int num_cpus, MemoryController *mmu, Addr addr,
HierParams *hier, Bus *bus);
/**
* memory mapped reads and writes
@ -103,6 +104,9 @@ class AlphaConsole : public FunctionalMemory
*/
virtual void serialize(std::ostream &os);
virtual void unserialize(Checkpoint *cp, const std::string &section);
public:
Tick cacheAccess(MemReqPtr &req);
};
#endif // __ALPHA_CONSOLE_HH__

51
dev/io_device.cc Normal file
View file

@ -0,0 +1,51 @@
/*
* 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.
*/
#include "dev/io_device.hh"
#include "mem/bus/base_interface.hh"
PioDevice::PioDevice(const std::string &name)
: FunctionalMemory(name), pioInterface(NULL)
{}
PioDevice::~PioDevice()
{
if (pioInterface)
delete pioInterface;
}
DmaDevice::DmaDevice(const std::string &name)
: PioDevice(name), dmaInterface(NULL)
{}
DmaDevice::~DmaDevice()
{
if (dmaInterface)
delete dmaInterface;
}

58
dev/io_device.hh Normal file
View file

@ -0,0 +1,58 @@
/*
* 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.
*/
#ifndef __IO_DEVICE_HH__
#define __IO_DEVICE_HH__
#include "mem/functional_mem/functional_memory.hh"
class BaseInterface;
class Bus;
class HierParams;
class PioDevice : public FunctionalMemory
{
protected:
BaseInterface *pioInterface;
public:
PioDevice(const std::string &name);
virtual ~PioDevice();
};
class DmaDevice : public PioDevice
{
protected:
BaseInterface *dmaInterface;
public:
DmaDevice(const std::string &name);
virtual ~DmaDevice();
};
#endif // __IO_DEVICE_HH__