03e256b0f0
README:
Clarify cygwin EIO error explanation.
build/SConstruct:
Cygwin header files cause uninitialized var warnings.
dev/ide_ctrl.cc:
Get rid of unnecessary byte-swap calls, some of which were
too ambiguous for cygwin (or gcc 3.4.4).
dev/pcidev.cc:
Disambiguate arg for overloaded byte swap operation
(and fix it to be the correct one).
--HG--
extra : convert_revision : be37c6315aacbec6332b1d09e726b39b4aa18dce
85 lines
3.1 KiB
C++
85 lines
3.1 KiB
C++
/*
|
|
* Copyright (c) 2004-2005 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.
|
|
*/
|
|
|
|
/** @file
|
|
* Declaration of a fake device.
|
|
*/
|
|
|
|
#ifndef __ISA_FAKE_HH__
|
|
#define __ISA_FAKE_HH__
|
|
|
|
#include "dev/tsunami.hh"
|
|
#include "base/range.hh"
|
|
#include "dev/io_device.hh"
|
|
|
|
/**
|
|
* IsaFake is a device that returns -1 on all reads and
|
|
* accepts all writes. It is meant to be placed at an address range
|
|
* so that an mcheck doesn't occur when an os probes a piece of hw
|
|
* that doesn't exist (e.g. UARTs1-3).
|
|
*/
|
|
class IsaFake : public PioDevice
|
|
{
|
|
private:
|
|
/** The address in memory that we respond to */
|
|
Addr addr;
|
|
|
|
public:
|
|
/**
|
|
* The constructor for Tsunmami Fake just registers itself with the MMU.
|
|
* @param name name of this device.
|
|
* @param a address to respond to.
|
|
* @param mmu the mmu we register with.
|
|
* @param size number of addresses to respond to
|
|
*/
|
|
IsaFake(const std::string &name, Addr a, MemoryController *mmu,
|
|
HierParams *hier, Bus *bus, Addr size = 0x8);
|
|
|
|
/**
|
|
* This read always returns -1.
|
|
* @param req The memory request.
|
|
* @param data Where to put the data.
|
|
*/
|
|
virtual Fault read(MemReqPtr &req, uint8_t *data);
|
|
|
|
/**
|
|
* All writes are simply ignored.
|
|
* @param req The memory request.
|
|
* @param data the data to not write.
|
|
*/
|
|
virtual Fault write(MemReqPtr &req, const uint8_t *data);
|
|
|
|
/**
|
|
* Return how long this access will take.
|
|
* @param req the memory request to calcuate
|
|
* @return Tick when the request is done
|
|
*/
|
|
Tick cacheAccess(MemReqPtr &req);
|
|
};
|
|
|
|
#endif // __ISA_FAKE_HH__
|