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/*
* 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
* Tsunami PCI interface CSRs
*/
#ifndef __TSUNAMI_PCHIP_HH__
#define __TSUNAMI_PCHIP_HH__
#include "dev/tsunami.hh"
#include "base/range.hh"
#include "dev/io_device.hh"
/**
* A very simple implementation of the Tsunami PCI interface chips.
*/
class TsunamiPChip : public PioDevice
{
private:
/** The base address of this device */
Addr addr;
/** The size of mappad from the above address */
static const Addr size = 0xfff;
protected:
/**
* pointer to the tsunami object.
* This is our access to all the other tsunami
* devices.
*/
Tsunami *tsunami;
/** Pchip control register */
uint64_t pctl;
/** Window Base addresses */
uint64_t wsba[4];
/** Window masks */
uint64_t wsm[4];
/** Translated Base Addresses */
uint64_t tba[4];
public:
/**
* Register the PChip with the mmu and init all wsba, wsm, and tba to 0
* @param name the name of thes device
* @param t a pointer to the tsunami device
* @param a the address which we respond to
* @param mmu the mmu we are to register with
* @param hier object to store parameters universal the device hierarchy
* @param bus The bus that this device is attached to
*/
TsunamiPChip(const std::string &name, Tsunami *t, Addr a,
MemoryController *mmu, HierParams *hier, Bus *bus,
Tick pio_latency);
/**
* Translate a PCI bus address to a memory address for DMA.
* @todo Andrew says this needs to be fixed. What's wrong with it?
* @param busAddr PCI address to translate.
* @return memory system address
*/
Addr translatePciToDma(Addr busAddr);
/**
* Process a read to the PChip.
* @param req Contains the address to read from.
* @param data A pointer to write the read data to.
* @return The fault condition of the access.
*/
virtual Fault read(MemReqPtr &req, uint8_t *data);
/**
* Process a write to the PChip.
* @param req Contains the address to write to.
* @param data The data to write.
* @return The fault condition of the access.
*/
virtual Fault write(MemReqPtr &req, const uint8_t *data);
/**
* Serialize this object to the given output stream.
* @param os The stream to serialize to.
*/
virtual void serialize(std::ostream &os);
/**
* Reconstruct the state of this object from a checkpoint.
* @param cp The checkpoint use.
* @param section The section name of this object
*/
virtual void unserialize(Checkpoint *cp, const std::string §ion);
/**
* 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 // __TSUNAMI_PCHIP_HH__
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