mmapped_ipr.hh revision 13613
14120SN/A/* 25417SN/A * Copyright (c) 2007-2008 The Hewlett-Packard Development Company 34120SN/A * All rights reserved. 44120SN/A * 57087SN/A * The license below extends only to copyright in the software and shall 67087SN/A * not be construed as granting a license to any other intellectual 77087SN/A * property including but not limited to intellectual property relating 87087SN/A * to a hardware implementation of the functionality of the software 97087SN/A * licensed hereunder. You may use the software subject to the license 107087SN/A * terms below provided that you ensure that this notice is replicated 117087SN/A * unmodified and in its entirety in all distributions of the software, 127087SN/A * modified or unmodified, in source code or in binary form. 134120SN/A * 147087SN/A * Redistribution and use in source and binary forms, with or without 157087SN/A * modification, are permitted provided that the following conditions are 167087SN/A * met: redistributions of source code must retain the above copyright 177087SN/A * notice, this list of conditions and the following disclaimer; 187087SN/A * redistributions in binary form must reproduce the above copyright 197087SN/A * notice, this list of conditions and the following disclaimer in the 207087SN/A * documentation and/or other materials provided with the distribution; 217087SN/A * neither the name of the copyright holders nor the names of its 224120SN/A * contributors may be used to endorse or promote products derived from 237087SN/A * this software without specific prior written permission. 244120SN/A * 254120SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 264120SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 274120SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 284120SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 294120SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 304120SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 314120SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 324120SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 334120SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 344120SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 354120SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 364120SN/A * 374120SN/A * Authors: Gabe Black 384120SN/A */ 394120SN/A 408105Sgblack@eecs.umich.edu#ifndef __ARCH_X86_MMAPPEDIPR_HH__ 418105Sgblack@eecs.umich.edu#define __ARCH_X86_MMAPPEDIPR_HH__ 424120SN/A 434152SN/A/** 444152SN/A * @file 454152SN/A * 464152SN/A * ISA-specific helper functions for memory mapped IPR accesses. 474152SN/A */ 484152SN/A 499897Sandreas@sandberg.pp.se#include "arch/generic/mmapped_ipr.hh" 507629SN/A#include "arch/x86/regs/misc.hh" 515182SN/A#include "cpu/base.hh" 524152SN/A#include "cpu/thread_context.hh" 534152SN/A#include "mem/packet.hh" 544120SN/A 554120SN/Anamespace X86ISA 564120SN/A{ 579180Sandreas.hansson@arm.com inline Cycles 584152SN/A handleIprRead(ThreadContext *xc, Packet *pkt) 594152SN/A { 609897Sandreas@sandberg.pp.se if (GenericISA::isGenericIprAccess(pkt)) { 619897Sandreas@sandberg.pp.se return GenericISA::handleGenericIprRead(xc, pkt); 629897Sandreas@sandberg.pp.se } else { 639897Sandreas@sandberg.pp.se Addr offset = pkt->getAddr() & mask(3); 649897Sandreas@sandberg.pp.se MiscRegIndex index = (MiscRegIndex)( 6513613Sgabeblack@google.com pkt->getAddr() / sizeof(RegVal)); 6613613Sgabeblack@google.com RegVal data = htog(xc->readMiscReg(index)); 679897Sandreas@sandberg.pp.se // Make sure we don't trot off the end of data. 6813613Sgabeblack@google.com assert(offset + pkt->getSize() <= sizeof(RegVal)); 699897Sandreas@sandberg.pp.se pkt->setData(((uint8_t *)&data) + offset); 709897Sandreas@sandberg.pp.se return Cycles(1); 719897Sandreas@sandberg.pp.se } 724152SN/A } 734152SN/A 749180Sandreas.hansson@arm.com inline Cycles 754152SN/A handleIprWrite(ThreadContext *xc, Packet *pkt) 764152SN/A { 779897Sandreas@sandberg.pp.se if (GenericISA::isGenericIprAccess(pkt)) { 789897Sandreas@sandberg.pp.se return GenericISA::handleGenericIprWrite(xc, pkt); 799897Sandreas@sandberg.pp.se } else { 809897Sandreas@sandberg.pp.se Addr offset = pkt->getAddr() & mask(3); 819897Sandreas@sandberg.pp.se MiscRegIndex index = (MiscRegIndex)( 8213613Sgabeblack@google.com pkt->getAddr() / sizeof(RegVal)); 8313613Sgabeblack@google.com RegVal data = htog(xc->readMiscRegNoEffect(index)); 849897Sandreas@sandberg.pp.se // Make sure we don't trot off the end of data. 8513613Sgabeblack@google.com assert(offset + pkt->getSize() <= sizeof(RegVal)); 869897Sandreas@sandberg.pp.se pkt->writeData(((uint8_t *)&data) + offset); 879897Sandreas@sandberg.pp.se xc->setMiscReg(index, gtoh(data)); 889897Sandreas@sandberg.pp.se return Cycles(1); 899897Sandreas@sandberg.pp.se } 904152SN/A } 918902Sandreas.hansson@arm.com} 924120SN/A 938105Sgblack@eecs.umich.edu#endif // __ARCH_X86_MMAPPEDIPR_HH__ 94