cc53465cd5
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
59 lines
2 KiB
C++
59 lines
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.
|
|
*/
|
|
|
|
#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__
|