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
58 lines
2 KiB
C++
58 lines
2 KiB
C++
/*
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* Copyright (c) 2003 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __IO_DEVICE_HH__
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#define __IO_DEVICE_HH__
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#include "mem/functional_mem/functional_memory.hh"
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class BaseInterface;
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class Bus;
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class HierParams;
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class PioDevice : public FunctionalMemory
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{
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protected:
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BaseInterface *pioInterface;
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public:
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PioDevice(const std::string &name);
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virtual ~PioDevice();
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};
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class DmaDevice : public PioDevice
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{
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protected:
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BaseInterface *dmaInterface;
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public:
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DmaDevice(const std::string &name);
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virtual ~DmaDevice();
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};
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#endif // __IO_DEVICE_HH__
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