dtod.cc revision 3943:68e673d2db04
1/* 2 * Copyright (c) 2004-2006 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Ali Saidi 29 */ 30 31/** @file 32 * Time of date device implementation 33 */ 34#include <sys/time.h> 35 36#include <deque> 37#include <string> 38#include <vector> 39 40#include "base/trace.hh" 41#include "dev/sparc/dtod.hh" 42#include "dev/platform.hh" 43#include "mem/packet_access.hh" 44#include "mem/port.hh" 45#include "sim/builder.hh" 46#include "sim/system.hh" 47 48using namespace std; 49using namespace TheISA; 50 51DumbTOD::DumbTOD(Params *p) 52 : BasicPioDevice(p) 53{ 54 pioSize = 0x08; 55 56 struct tm tm; 57 parseTime(p->init_time, &tm); 58 todTime = timegm(&tm); 59 60 DPRINTFN("Real-time clock set to %s\n", asctime(&tm)); 61 DPRINTFN("Real-time clock set to %d\n", todTime); 62} 63 64Tick 65DumbTOD::read(PacketPtr pkt) 66{ 67 assert(pkt->result == Packet::Unknown); 68 assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize); 69 assert(pkt->getSize() == 8); 70 71 pkt->allocate(); 72 pkt->set(todTime); 73 todTime += 1000; 74 75 pkt->result = Packet::Success; 76 return pioDelay; 77} 78 79Tick 80DumbTOD::write(PacketPtr pkt) 81{ 82 panic("Dumb tod device doesn't support writes\n"); 83} 84 85BEGIN_DECLARE_SIM_OBJECT_PARAMS(DumbTOD) 86 87 Param<Addr> pio_addr; 88 Param<Tick> pio_latency; 89 SimObjectParam<Platform *> platform; 90 SimObjectParam<System *> system; 91 VectorParam<int> time; 92 93END_DECLARE_SIM_OBJECT_PARAMS(DumbTOD) 94 95BEGIN_INIT_SIM_OBJECT_PARAMS(DumbTOD) 96 97 INIT_PARAM(pio_addr, "Device Address"), 98 INIT_PARAM(pio_latency, "Programmed IO latency"), 99 INIT_PARAM(platform, "platform"), 100 INIT_PARAM(system, "system object"), 101 INIT_PARAM(time, "") 102 103END_INIT_SIM_OBJECT_PARAMS(DumbTOD) 104 105CREATE_SIM_OBJECT(DumbTOD) 106{ 107 DumbTOD::Params *p = new DumbTOD::Params; 108 p->name =getInstanceName(); 109 p->pio_addr = pio_addr; 110 p->pio_delay = pio_latency; 111 p->platform = platform; 112 p->system = system; 113 p->init_time = time; 114 return new DumbTOD(p); 115} 116 117REGISTER_SIM_OBJECT("DumbTOD", DumbTOD) 118