device.hh revision 845 
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 * Interface for devices using PCI configuration
31 */
32
33#ifndef __PCI_DEV_HH__
34#define __PCI_DEV_HH__
35
36#include "dev/pcireg.h"
37#include "dev/io_device.hh"
38
39class PciConfigAll;
40class MemoryController;
41
42class PciConfigData : public SimObject
43{
44  public:
45    PciConfigData(const std::string &name)
46        : SimObject(name)
47    {
48        memset(config.data, 0, sizeof(config.data));
49        memset(BARAddrs, 0, sizeof(BARAddrs));
50        memset(BARSize, 0, sizeof(BARSize));
51    }
52
53    PCIConfig config;
54    uint32_t BARSize[6];
55    Addr BARAddrs[6];
56};
57
58/**
59 * PCI device, base implemnation is only config space.
60 * Each device is connected to a PCIConfigSpace device
61 * which returns -1 for everything but the pcidevs that
62 * register with it. This object registers with the PCIConfig space
63 * object.
64 */
65class PciDev : public DmaDevice
66{
67  protected:
68    MemoryController *MMU;
69    PciConfigAll *ConfigSpace;
70    PciConfigData *ConfigData;
71    uint32_t BusNum;
72    uint32_t DeviceNum;
73    uint32_t FunctionNum;
74
75    PCIConfig config;
76    uint32_t BARSize[6];
77    Addr BARAddrs[6];
78
79  public:
80    PciDev(const std::string &name, MemoryController *mmu, PciConfigAll *cf,
81           PciConfigData *cd, uint32_t bus, uint32_t dev, uint32_t func);
82
83    virtual Fault read(MemReqPtr &req, uint8_t *data) {
84        return No_Fault;
85    }
86    virtual Fault write(MemReqPtr &req, const uint8_t *data) {
87        return No_Fault;
88    }
89
90    virtual void WriteConfig(int offset, int size, uint32_t data);
91    virtual void ReadConfig(int offset, int size, uint8_t *data);
92
93    virtual void serialize(std::ostream &os);
94    virtual void unserialize(Checkpoint *cp, const std::string &section);
95};
96
97#endif // __PCI_DEV_HH__
98