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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 "dev/pciconfigall.hh"
#include "dev/pcireg.h"
#include "dev/platform.hh"
#include "mem/packet.hh"
#include "mem/packet_access.hh"
#include "sim/builder.hh"
#include "sim/system.hh"
using namespace std;
PciConfigAll::PciConfigAll(Params *p)
: PioDevice(p)
{
pioAddr = p->platform->calcConfigAddr(params()->bus,0,0);
}
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 params()->pio_delay;
}
Tick
PciConfigAll::write(PacketPtr pkt)
{
panic("Attempting to write to config space on non-existant device\n");
M5_DUMMY_RETURN
}
void
PciConfigAll::addressRanges(AddrRangeList &range_list)
{
range_list.clear();
range_list.push_back(RangeSize(pioAddr, params()->size));
}
#ifndef DOXYGEN_SHOULD_SKIP_THIS
BEGIN_DECLARE_SIM_OBJECT_PARAMS(PciConfigAll)
Param<Tick> pio_latency;
Param<int> bus;
Param<Addr> size;
SimObjectParam<Platform *> platform;
SimObjectParam<System *> system;
END_DECLARE_SIM_OBJECT_PARAMS(PciConfigAll)
BEGIN_INIT_SIM_OBJECT_PARAMS(PciConfigAll)
INIT_PARAM(pio_latency, "Programmed IO latency"),
INIT_PARAM(bus, "Bus that this object handles config space for"),
INIT_PARAM(size, "The size of config space"),
INIT_PARAM(platform, "platform"),
INIT_PARAM(system, "system object")
END_INIT_SIM_OBJECT_PARAMS(PciConfigAll)
CREATE_SIM_OBJECT(PciConfigAll)
{
PciConfigAll::Params *p = new PciConfigAll::Params;
p->pio_delay = pio_latency;
p->platform = platform;
p->system = system;
p->bus = bus;
p->size = size;
return new PciConfigAll(p);
}
REGISTER_SIM_OBJECT("PciConfigAll", PciConfigAll)
#endif // DOXYGEN_SHOULD_SKIP_THIS
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