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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.
*
* Authors: Andrew Schultz
* Ali Saidi
*/
/* @file
* PCI Configspace implementation
*/
#include "base/trace.hh"
#include "debug/PciConfigAll.hh"
#include "dev/pciconfigall.hh"
#include "dev/pcireg.h"
#include "dev/platform.hh"
#include "mem/packet.hh"
#include "mem/packet_access.hh"
#include "params/PciConfigAll.hh"
#include "sim/system.hh"
PciConfigAll::PciConfigAll(const Params *p)
: BasicPioDevice(p)
{
// the pio_addr Python parameter is ignored, and overridden by
// this caluclated value
pioAddr = p->platform->calcPciConfigAddr(params()->bus,0,0);
pioSize = params()->size;
}
Tick
PciConfigAll::read(PacketPtr pkt)
{
pkt->allocate();
DPRINTF(PciConfigAll, "read va=%#x size=%d\n", pkt->getAddr(),
pkt->getSize());
switch (pkt->getSize()) {
case sizeof(uint32_t):
pkt->set<uint32_t>(0xFFFFFFFF);
break;
case sizeof(uint16_t):
pkt->set<uint16_t>(0xFFFF);
break;
case sizeof(uint8_t):
pkt->set<uint8_t>(0xFF);
break;
default:
panic("invalid access size(?) for PCI configspace!\n");
}
pkt->makeAtomicResponse();
return pioDelay;
}
Tick
PciConfigAll::write(PacketPtr pkt)
{
panic("Attempting to write to config space on non-existent device\n");
M5_DUMMY_RETURN
}
#ifndef DOXYGEN_SHOULD_SKIP_THIS
PciConfigAll *
PciConfigAllParams::create()
{
return new PciConfigAll(this);
}
#endif // DOXYGEN_SHOULD_SKIP_THIS
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