src/dev/sparc/dtod.cc

   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
  48 using namespace std;
  49 using namespace TheISA;
  50
  51 DumbTOD::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
  64 Tick
  65 DumbTOD::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
  79 Tick
  80 DumbTOD::write(PacketPtr pkt)
  81 {
  82     panic("Dumb tod device doesn't support writes\n");
  83 }
  84
  85 BEGIN_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
  93 END_DECLARE_SIM_OBJECT_PARAMS(DumbTOD)
  94
  95 BEGIN_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
 103 END_INIT_SIM_OBJECT_PARAMS(DumbTOD)
 104
 105 CREATE_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
 117 REGISTER_SIM_OBJECT("DumbTOD", DumbTOD)