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.
| 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
29/** @file
30 * Declaration of a fake device.
31 */
32
33#ifndef __ISA_FAKE_HH__
34#define __ISA_FAKE_HH__
35
36#include "dev/tsunami.hh"
37#include "base/range.hh"
38#include "dev/io_device.hh"
39
40/**
41 * IsaFake is a device that returns -1 on all reads and
42 * accepts all writes. It is meant to be placed at an address range
43 * so that an mcheck doesn't occur when an os probes a piece of hw
44 * that doesn't exist (e.g. UARTs1-3).
45 */
46class IsaFake : public BasicPioDevice
47{
48 public:
49 struct Params : public BasicPioDevice::Params
50 {
51 Addr pio_size;
52 };
53 protected:
54 const Params *params() const { return (const Params*)_params; }
55
56 public:
57 /**
58 * The constructor for Tsunmami Fake just registers itself with the MMU.
59 * @param p params structure
60 */
61 IsaFake(Params *p);
62
63 /**
64 * This read always returns -1.
65 * @param req The memory request.
66 * @param data Where to put the data.
67 */
68 virtual Tick read(Packet *pkt);
69
70 /**
71 * All writes are simply ignored.
72 * @param req The memory request.
73 * @param data the data to not write.
74 */
75 virtual Tick write(Packet *pkt);
76};
77
78#endif // __TSUNAMI_FAKE_HH__
| 30 */
31
32/** @file
33 * Declaration of a fake device.
34 */
35
36#ifndef __ISA_FAKE_HH__
37#define __ISA_FAKE_HH__
38
39#include "dev/tsunami.hh"
40#include "base/range.hh"
41#include "dev/io_device.hh"
42
43/**
44 * IsaFake is a device that returns -1 on all reads and
45 * accepts all writes. It is meant to be placed at an address range
46 * so that an mcheck doesn't occur when an os probes a piece of hw
47 * that doesn't exist (e.g. UARTs1-3).
48 */
49class IsaFake : public BasicPioDevice
50{
51 public:
52 struct Params : public BasicPioDevice::Params
53 {
54 Addr pio_size;
55 };
56 protected:
57 const Params *params() const { return (const Params*)_params; }
58
59 public:
60 /**
61 * The constructor for Tsunmami Fake just registers itself with the MMU.
62 * @param p params structure
63 */
64 IsaFake(Params *p);
65
66 /**
67 * This read always returns -1.
68 * @param req The memory request.
69 * @param data Where to put the data.
70 */
71 virtual Tick read(Packet *pkt);
72
73 /**
74 * All writes are simply ignored.
75 * @param req The memory request.
76 * @param data the data to not write.
77 */
78 virtual Tick write(Packet *pkt);
79};
80
81#endif // __TSUNAMI_FAKE_HH__
|