07cf9d914b
This patch simplifies the address-range determination mechanism and also unifies the naming across ports and devices. It further splits the queries for determining if a port is snooping and what address ranges it responds to (aiming towards a separation of cache-maintenance ports and pure memory-mapped ports). Default behaviours are such that most ports do not have to define isSnooping, and master ports need not implement getAddrRanges.
90 lines
3.1 KiB
C++
90 lines
3.1 KiB
C++
/*
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* Copyright (c) 2004-2005 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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* Authors: Andrew Schultz
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* Ali Saidi
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*/
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/*
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* @file
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* PCI Config space implementation.
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*/
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#ifndef __PCICONFIGALL_HH__
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#define __PCICONFIGALL_HH__
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#include "base/range.hh"
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#include "dev/io_device.hh"
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#include "dev/pcireg.h"
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#include "params/PciConfigAll.hh"
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/**
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* PCI Config Space
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* All of PCI config space needs to return -1 on Tsunami, except
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* the devices that exist. This device maps the entire bus config
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* space and passes the requests on to TsunamiPCIDev devices as
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* appropriate.
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*/
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class PciConfigAll : public PioDevice
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{
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public:
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typedef PciConfigAllParams Params;
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const Params *params() const { return (const Params *)_params; }
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/**
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* Constructor for PCIConfigAll
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* @param p parameters structure
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*/
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PciConfigAll(const Params *p);
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/**
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* Read something in PCI config space. If the device does not exist
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* -1 is returned, if the device does exist its PciDev::ReadConfig (or the
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* virtual function that overrides) it is called.
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* @param pkt Contains information about the read operation
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* @return Amount of time to do the read
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*/
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virtual Tick read(PacketPtr pkt);
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/**
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* Write to PCI config spcae. If the device does not exit the simulator
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* panics. If it does it is passed on the PciDev::WriteConfig (or the virtual
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* function that overrides it).
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* @param pkt Contains information about the write operation
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* @return Amount of time to do the read
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*/
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virtual Tick write(PacketPtr pkt);
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AddrRangeList getAddrRanges();
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private:
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Addr pioAddr;
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};
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#endif // __PCICONFIGALL_HH__
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