tsunami_io.hh revision 772 
1/*
2 * Copyright (c) 2003 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
29/* @file
30 * Tsunnami Fake DMA memory map
31 */
32
33#ifndef __TSUNAMI_DMA_HH__
34#define __TSUNAMI_DMA_HH__
35
36#include "mem/functional_mem/mmap_device.hh"
37#include "dev/tsunami.hh"
38
39/*
40 * Tsunami I/O device
41 */
42class TsunamiIO : public MmapDevice
43{
44
45  public:
46
47  protected:
48
49    class ClockEvent : public Event
50    {
51        protected:
52            Tick interval;
53            uint8_t mode;
54            uint8_t status;
55
56        public:
57            ClockEvent();
58
59            virtual void process();
60            virtual const char *description();
61            void Program(int count);
62            void ChangeMode(uint8_t mode);
63            uint8_t Status();
64
65    };
66
67    class RTCEvent : public Event
68    {
69      protected:
70        Tick interval;
71        uint8_t rtc_uip;
72
73      public:
74        RTCEvent();
75
76        virtual void process();
77        virtual const char *description();
78        uint8_t rtc_uip_value();
79    };
80
81      uint8_t mask1;
82      uint8_t mask2;
83      uint8_t mode1;
84      uint8_t mode2;
85
86      ClockEvent timer0;
87      ClockEvent timer1;
88      ClockEvent timer2;
89
90      uint32_t timerData;
91
92  public:
93    TsunamiIO(const std::string &name, /*Tsunami *t,*/
94               Addr addr, Addr mask, MemoryController *mmu);
95
96    virtual Fault read(MemReqPtr req, uint8_t *data);
97    virtual Fault write(MemReqPtr req, const uint8_t *data);
98
99    virtual void serialize(std::ostream &os);
100    virtual void unserialize(Checkpoint *cp, const std::string &section);
101};
102
103#endif // __TSUNAMI_IO_HH__
104