dtod.cc revision 3914:e83101d984d5
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), todTime(p->init_time) 53{ 54 pioSize = 0x08; 55 56 struct tm tm; 57 gmtime_r((time_t*)&todTime, &tm); 58 DPRINTFN("Real-time clock set to %s\n", asctime(&tm)); 59 DPRINTFN("Real-time clock set to %d\n", todTime); 60} 61 62Tick 63DumbTOD::read(PacketPtr pkt) 64{ 65 assert(pkt->result == Packet::Unknown); 66 assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize); 67 assert(pkt->getSize() == 8); 68 69 pkt->allocate(); 70 pkt->set(todTime); 71 todTime += 1000; 72 73 pkt->result = Packet::Success; 74 return pioDelay; 75} 76 77Tick 78DumbTOD::write(PacketPtr pkt) 79{ 80 panic("Dumb tod device doesn't support writes\n"); 81} 82 83BEGIN_DECLARE_SIM_OBJECT_PARAMS(DumbTOD) 84 85 Param<Addr> pio_addr; 86 Param<Tick> pio_latency; 87 SimObjectParam<Platform *> platform; 88 SimObjectParam<System *> system; 89 Param<time_t> time; 90 91END_DECLARE_SIM_OBJECT_PARAMS(DumbTOD) 92 93BEGIN_INIT_SIM_OBJECT_PARAMS(DumbTOD) 94 95 INIT_PARAM(pio_addr, "Device Address"), 96 INIT_PARAM(pio_latency, "Programmed IO latency"), 97 INIT_PARAM(platform, "platform"), 98 INIT_PARAM(system, "system object"), 99 INIT_PARAM(time, "System time to use (0 for actual time") 100 101END_INIT_SIM_OBJECT_PARAMS(DumbTOD) 102 103CREATE_SIM_OBJECT(DumbTOD) 104{ 105 DumbTOD::Params *p = new DumbTOD::Params; 106 p->name =getInstanceName(); 107 p->pio_addr = pio_addr; 108 p->pio_delay = pio_latency; 109 p->platform = platform; 110 p->system = system; 111 p->init_time = time; 112 return new DumbTOD(p); 113} 114 115REGISTER_SIM_OBJECT("DumbTOD", DumbTOD) 116