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/*
* Copyright (c) 2007-2008 The Hewlett-Packard Development Company
* All rights reserved.
*
* Redistribution and use of this software in source and binary forms,
* with or without modification, are permitted provided that the
* following conditions are met:
*
* The software must be used only for Non-Commercial Use which means any
* use which is NOT directed to receiving any direct monetary
* compensation for, or commercial advantage from such use. Illustrative
* examples of non-commercial use are academic research, personal study,
* teaching, education and corporate research & development.
* Illustrative examples of commercial use are distributing products for
* commercial advantage and providing services using the software for
* commercial advantage.
*
* If you wish to use this software or functionality therein that may be
* covered by patents for commercial use, please contact:
* Director of Intellectual Property Licensing
* Office of Strategy and Technology
* Hewlett-Packard Company
* 1501 Page Mill Road
* Palo Alto, California 94304
*
* 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 HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission. No right of
* sublicense is granted herewith. Derivatives of the software and
* output created using the software may be prepared, but only for
* Non-Commercial Uses. Derivatives of the software may be shared with
* others provided: (i) the others agree to abide by the list of
* conditions herein which includes the Non-Commercial Use restrictions;
* and (ii) such Derivatives of the software include the above copyright
* notice to acknowledge the contribution from this software where
* applicable, this list of conditions and the disclaimer below.
*
* 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: Gabe Black
*/
#ifndef __ARCH_X86_MMAPEDIPR_HH__
#define __ARCH_X86_MMAPEDIPR_HH__
/**
* @file
*
* ISA-specific helper functions for memory mapped IPR accesses.
*/
#include "arch/x86/miscregs.hh"
#include "config/full_system.hh"
#include "cpu/base.hh"
#include "cpu/thread_context.hh"
#include "mem/packet.hh"
namespace X86ISA
{
inline Tick
handleIprRead(ThreadContext *xc, Packet *pkt)
{
#if !FULL_SYSTEM
panic("Shouldn't have a memory mapped register in SE\n");
#else
Addr offset = pkt->getAddr() & mask(3);
MiscRegIndex index = (MiscRegIndex)(pkt->getAddr() / sizeof(MiscReg));
MiscReg data = htog(xc->readMiscReg(index));
// Make sure we don't trot off the end of data.
assert(offset + pkt->getSize() <= sizeof(MiscReg));
pkt->setData(((uint8_t *)&data) + offset);
#endif
return xc->getCpuPtr()->ticks(1);
}
inline Tick
handleIprWrite(ThreadContext *xc, Packet *pkt)
{
#if !FULL_SYSTEM
panic("Shouldn't have a memory mapped register in SE\n");
#else
Addr offset = pkt->getAddr() & mask(3);
MiscRegIndex index = (MiscRegIndex)(pkt->getAddr() / sizeof(MiscReg));
MiscReg data;
if (isApicReg(index)) {
data = htog(xc->readMiscReg(index));
} else {
data = htog(xc->readMiscRegNoEffect(index));
}
// Make sure we don't trot off the end of data.
assert(offset + pkt->getSize() <= sizeof(MiscReg));
pkt->writeData(((uint8_t *)&data) + offset);
xc->setMiscReg(index, gtoh(data));
#endif
return xc->getCpuPtr()->ticks(1);
}
};
#endif // __ARCH_X86_MMAPEDIPR_HH__
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