tsunami_cchip.hh revision 11168:f98eb2da15a4
17977Shsul@eecs.umich.edu/* 28008Ssaidi@eecs.umich.edu * Copyright (c) 2004-2005 The Regents of The University of Michigan 37992Ssaidi@eecs.umich.edu * All rights reserved. 47992Ssaidi@eecs.umich.edu * 57992Ssaidi@eecs.umich.edu * Redistribution and use in source and binary forms, with or without 67992Ssaidi@eecs.umich.edu * modification, are permitted provided that the following conditions are 77992Ssaidi@eecs.umich.edu * met: redistributions of source code must retain the above copyright 87992Ssaidi@eecs.umich.edu * notice, this list of conditions and the following disclaimer; 97992Ssaidi@eecs.umich.edu * redistributions in binary form must reproduce the above copyright 107992Ssaidi@eecs.umich.edu * notice, this list of conditions and the following disclaimer in the 117992Ssaidi@eecs.umich.edu * documentation and/or other materials provided with the distribution; 127992Ssaidi@eecs.umich.edu * neither the name of the copyright holders nor the names of its 138008Ssaidi@eecs.umich.edu * contributors may be used to endorse or promote products derived from 148008Ssaidi@eecs.umich.edu * this software without specific prior written permission. 158008Ssaidi@eecs.umich.edu * 168008Ssaidi@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 177992Ssaidi@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 187992Ssaidi@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 197992Ssaidi@eecs.umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 207992Ssaidi@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 217992Ssaidi@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 228003Ssaidi@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 237977Shsul@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 248008Ssaidi@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 258008Ssaidi@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 267977Shsul@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 278003Ssaidi@eecs.umich.edu * 288008Ssaidi@eecs.umich.edu * Authors: Ali Saidi 298003Ssaidi@eecs.umich.edu */ 308003Ssaidi@eecs.umich.edu 318008Ssaidi@eecs.umich.edu/** @file 327977Shsul@eecs.umich.edu * Emulation of the Tsunami CChip CSRs 337977Shsul@eecs.umich.edu */ 348008Ssaidi@eecs.umich.edu 357977Shsul@eecs.umich.edu#ifndef __TSUNAMI_CCHIP_HH__ 368008Ssaidi@eecs.umich.edu#define __TSUNAMI_CCHIP_HH__ 378008Ssaidi@eecs.umich.edu 387977Shsul@eecs.umich.edu#include "dev/alpha/tsunami.hh" 398008Ssaidi@eecs.umich.edu#include "dev/io_device.hh" 408008Ssaidi@eecs.umich.edu#include "params/TsunamiCChip.hh" 417977Shsul@eecs.umich.edu 427981Sbinkertn@umich.edu/** 437981Sbinkertn@umich.edu * Tsunami CChip CSR Emulation. This device includes all the interrupt 447981Sbinkertn@umich.edu * handling code for the chipset. 457977Shsul@eecs.umich.edu */ 468008Ssaidi@eecs.umich.educlass TsunamiCChip : public BasicPioDevice 47{ 48 protected: 49 /** 50 * pointer to the tsunami object. 51 * This is our access to all the other tsunami 52 * devices. 53 */ 54 Tsunami *tsunami; 55 56 /** 57 * The dims are device interrupt mask registers. 58 * One exists for each CPU, the DRIR X DIM = DIR 59 */ 60 uint64_t dim[Tsunami::Max_CPUs]; 61 62 /** 63 * The dirs are device interrupt registers. 64 * One exists for each CPU, the DRIR X DIM = DIR 65 */ 66 uint64_t dir[Tsunami::Max_CPUs]; 67 68 /** 69 * This register contains bits for each PCI interrupt 70 * that can occur. 71 */ 72 uint64_t drir; 73 74 /** Indicator of which CPUs have an IPI interrupt */ 75 uint64_t ipint; 76 77 /** Indicator of which CPUs have an RTC interrupt */ 78 uint64_t itint; 79 80 public: 81 typedef TsunamiCChipParams Params; 82 /** 83 * Initialize the Tsunami CChip by setting all of the 84 * device register to 0. 85 * @param p params struct 86 */ 87 TsunamiCChip(const Params *p); 88 89 const Params * 90 params() const 91 { 92 return dynamic_cast<const Params *>(_params); 93 } 94 95 virtual Tick read(PacketPtr pkt); 96 97 virtual Tick write(PacketPtr pkt); 98 99 /** 100 * post an RTC interrupt to the CPU 101 */ 102 void postRTC(); 103 104 /** 105 * post an interrupt to the CPU. 106 * @param interrupt the interrupt number to post (0-64) 107 */ 108 void postDRIR(uint32_t interrupt); 109 110 /** 111 * clear an interrupt previously posted to the CPU. 112 * @param interrupt the interrupt number to post (0-64) 113 */ 114 void clearDRIR(uint32_t interrupt); 115 116 /** 117 * post an ipi interrupt to the CPU. 118 * @param ipintr the cpu number to clear(bitvector) 119 */ 120 void clearIPI(uint64_t ipintr); 121 122 /** 123 * clear a timer interrupt previously posted to the CPU. 124 * @param itintr the cpu number to clear(bitvector) 125 */ 126 void clearITI(uint64_t itintr); 127 128 /** 129 * request an interrupt be posted to the CPU. 130 * @param ipreq the cpu number to interrupt(bitvector) 131 */ 132 void reqIPI(uint64_t ipreq); 133 134 void serialize(CheckpointOut &cp) const override; 135 void unserialize(CheckpointIn &cp) override; 136}; 137 138#endif // __TSUNAMI_CCHIP_HH__ 139