2 * Copyright (c) 2004-2005 The Regents of The University of Michigan
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.
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.
34 * Malta I/O including PIC, PIT, RTC, DMA
43 #include "base/time.hh"
44 #include "base/trace.hh"
45 #include "dev/rtcreg.h"
46 #include "dev/mips/malta_cchip.hh"
47 #include "dev/mips/malta.hh"
48 #include "dev/mips/malta_io.hh"
49 #include "dev/mips/maltareg.h"
50 #include "mem/packet.hh"
51 #include "mem/packet_access.hh"
52 #include "mem/port.hh"
53 #include "params/MaltaIO.hh"
54 #include "sim/system.hh"
57 using namespace TheISA
;
59 MaltaIO::RTC::RTC(const string
&name
, const MaltaIOParams
*p
)
60 : MC146818(p
->malta
, name
, p
->time
, p
->year_is_bcd
, p
->frequency
),
65 MaltaIO::MaltaIO(const Params
*p
)
66 : BasicPioDevice(p
), malta(p
->malta
),
67 pitimer(this, p
->name
+ "pitimer"), rtc(p
->name
+ ".rtc", p
)
71 // set the back pointer from malta to myself
76 picInterrupting
= false;
80 MaltaIO::frequency() const
82 return Clock::Frequency
/ params()->frequency
;
86 MaltaIO::read(PacketPtr pkt
)
88 panic("MaltaIO::read(...) not implemented inside malta_io.cc");
93 MaltaIO::write(PacketPtr pkt
)
95 panic("MaltaIO::write(...) not implemented inside malta_io.cc");
100 MaltaIO::postIntr(uint8_t interrupt
)
102 malta
->cchip
->postIntr(interrupt
);
103 DPRINTF(Malta
, "posting pic interrupt to cchip\n");
107 MaltaIO::clearIntr(uint8_t interrupt
)
109 malta
->cchip
->clearIntr(interrupt
);
110 DPRINTF(Malta
, "clear pic interrupt to cchip\n");
114 MaltaIO::serialize(ostream
&os
)
116 SERIALIZE_SCALAR(timerData
);
117 SERIALIZE_SCALAR(mask1
);
118 SERIALIZE_SCALAR(mask2
);
119 SERIALIZE_SCALAR(mode1
);
120 SERIALIZE_SCALAR(mode2
);
121 SERIALIZE_SCALAR(picr
);
122 SERIALIZE_SCALAR(picInterrupting
);
124 // Serialize the timers
125 pitimer
.serialize("pitimer", os
);
126 rtc
.serialize("rtc", os
);
130 MaltaIO::unserialize(Checkpoint
*cp
, const string
§ion
)
132 UNSERIALIZE_SCALAR(timerData
);
133 UNSERIALIZE_SCALAR(mask1
);
134 UNSERIALIZE_SCALAR(mask2
);
135 UNSERIALIZE_SCALAR(mode1
);
136 UNSERIALIZE_SCALAR(mode2
);
137 UNSERIALIZE_SCALAR(picr
);
138 UNSERIALIZE_SCALAR(picInterrupting
);
140 // Unserialize the timers
141 pitimer
.unserialize("pitimer", cp
, section
);
142 rtc
.unserialize("rtc", cp
, section
);
146 MaltaIOParams::create()
148 return new MaltaIO(this);