src/dev/sparc/dtod.hh

   1 /*
   2  * Copyright (c) 206, 2004-2005 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  * This device acts as a simple time of date device. It's implemented as a
  33  * simple device register read.
  34  */
  35
  36 #ifndef __DEV_SPARC_DTOD_HH__
  37 #define __DEV_SPARC_DTOD_HH__
  38
  39 #include "base/range.hh"
  40 #include "dev/io_device.hh"
  41
  42
  43 /**
  44  * DumbTOD simply returns some idea of time when read.  Until we finish with
  45  * legion it starts with the start time and increments itself by 1000 each time.
  46  */
  47 class DumbTOD : public BasicPioDevice
  48 {
  49   private:
  50     uint64_t todTime;
  51
  52   public:
  53     struct Params : public BasicPioDevice::Params
  54     {
  55         time_t init_time;
  56     };
  57   protected:
  58     const Params *params() const { return (const Params *)_params; }
  59
  60   public:
  61     DumbTOD(Params *p);
  62
  63     virtual Tick read(PacketPtr pkt);
  64     virtual Tick write(PacketPtr pkt);
  65 };
  66
  67 #endif // __DEV_BADDEV_HH__