1/*
2 * Copyright (c) 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: Gabe Black
29 */
30
31#ifndef __DEV_X86_I8259_HH__
32#define __DEV_X86_I8259_HH__
33
34#include "dev/io_device.hh"
| 1/*
2 * Copyright (c) 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: Gabe Black
29 */
30
31#ifndef __DEV_X86_I8259_HH__
32#define __DEV_X86_I8259_HH__
33
34#include "dev/io_device.hh"
|
| 35#include "dev/x86/intdev.hh"
|
35#include "params/I8259.hh"
| 36#include "params/I8259.hh"
|
| 37#include "enums/X86I8259CascadeMode.hh"
|
36
37namespace X86ISA
38{
39
| 38
39namespace X86ISA
40{
41
|
40class I8259 : public BasicPioDevice
| 42class I8259 : public BasicPioDevice, public IntDev
|
41{
42 protected:
43 Tick latency;
| 43{
44 protected:
45 Tick latency;
|
44 I8259 *master;
| 46 IntPin *output;
47 Enums::X86I8259CascadeMode mode;
|
45
46 // Interrupt Request Register
47 uint8_t IRR;
48 // In Service Register
49 uint8_t ISR;
50 // Interrupt Mask Register
51 uint8_t IMR;
52
53 bool cascadeMode;
54 // A bit vector of lines with slaves attached, or the slave id, depending
55 // on if this is a master or slave PIC.
56 uint8_t cascadeBits;
57
58 bool edgeTriggered;
59 bool readIRR;
60
61 // State machine information for reading in initialization control words.
62 bool expectICW4;
63 int initControlWord;
64
65 public:
66 typedef I8259Params Params;
67
68 const Params *
69 params() const
70 {
71 return dynamic_cast<const Params *>(_params);
72 }
73
| 48
49 // Interrupt Request Register
50 uint8_t IRR;
51 // In Service Register
52 uint8_t ISR;
53 // Interrupt Mask Register
54 uint8_t IMR;
55
56 bool cascadeMode;
57 // A bit vector of lines with slaves attached, or the slave id, depending
58 // on if this is a master or slave PIC.
59 uint8_t cascadeBits;
60
61 bool edgeTriggered;
62 bool readIRR;
63
64 // State machine information for reading in initialization control words.
65 bool expectICW4;
66 int initControlWord;
67
68 public:
69 typedef I8259Params Params;
70
71 const Params *
72 params() const
73 {
74 return dynamic_cast<const Params *>(_params);
75 }
76
|
74 I8259(Params * p) : BasicPioDevice(p)
| 77 I8259(Params * p) : BasicPioDevice(p), latency(p->pio_latency),
78 output(p->output), mode(p->mode), readIRR(true),
79 initControlWord(0)
|
75 {
76 pioSize = 2;
| 80 {
81 pioSize = 2;
|
77 initControlWord = 0;
78 readIRR = true;
79 latency = p->pio_latency;
80 master = p->master;
| |
81 }
82
83 Tick read(PacketPtr pkt);
84
85 Tick write(PacketPtr pkt);
86
87 void signalInterrupt(int line);
88};
89
90}; // namespace X86ISA
91
92#endif //__DEV_X86_I8259_HH__
| 82 }
83
84 Tick read(PacketPtr pkt);
85
86 Tick write(PacketPtr pkt);
87
88 void signalInterrupt(int line);
89};
90
91}; // namespace X86ISA
92
93#endif //__DEV_X86_I8259_HH__
|