summaryrefslogtreecommitdiff
path: root/hw/piix4.c
blob: c1cb94d39f57c8860c4afd6c79e78277ad0dfaf5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
/*
 * QEMU PIIX4 PCI Bridge Emulation
 *
 * Copyright (c) 2006 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include "hw.h"
#include "pc.h"
#include "pci/pci.h"
#include "isa.h"
#include "sysbus.h"

PCIDevice *piix4_dev;

typedef struct PIIX4State {
    PCIDevice dev;
} PIIX4State;

static void piix4_reset(void *opaque)
{
    PIIX4State *d = opaque;
    uint8_t *pci_conf = d->dev.config;

    pci_conf[0x04] = 0x07; // master, memory and I/O
    pci_conf[0x05] = 0x00;
    pci_conf[0x06] = 0x00;
    pci_conf[0x07] = 0x02; // PCI_status_devsel_medium
    pci_conf[0x4c] = 0x4d;
    pci_conf[0x4e] = 0x03;
    pci_conf[0x4f] = 0x00;
    pci_conf[0x60] = 0x0a; // PCI A -> IRQ 10
    pci_conf[0x61] = 0x0a; // PCI B -> IRQ 10
    pci_conf[0x62] = 0x0b; // PCI C -> IRQ 11
    pci_conf[0x63] = 0x0b; // PCI D -> IRQ 11
    pci_conf[0x69] = 0x02;
    pci_conf[0x70] = 0x80;
    pci_conf[0x76] = 0x0c;
    pci_conf[0x77] = 0x0c;
    pci_conf[0x78] = 0x02;
    pci_conf[0x79] = 0x00;
    pci_conf[0x80] = 0x00;
    pci_conf[0x82] = 0x00;
    pci_conf[0xa0] = 0x08;
    pci_conf[0xa2] = 0x00;
    pci_conf[0xa3] = 0x00;
    pci_conf[0xa4] = 0x00;
    pci_conf[0xa5] = 0x00;
    pci_conf[0xa6] = 0x00;
    pci_conf[0xa7] = 0x00;
    pci_conf[0xa8] = 0x0f;
    pci_conf[0xaa] = 0x00;
    pci_conf[0xab] = 0x00;
    pci_conf[0xac] = 0x00;
    pci_conf[0xae] = 0x00;
}

static const VMStateDescription vmstate_piix4 = {
    .name = "PIIX4",
    .version_id = 2,
    .minimum_version_id = 2,
    .minimum_version_id_old = 2,
    .fields      = (VMStateField[]) {
        VMSTATE_PCI_DEVICE(dev, PIIX4State),
        VMSTATE_END_OF_LIST()
    }
};

static int piix4_initfn(PCIDevice *dev)
{
    PIIX4State *d = DO_UPCAST(PIIX4State, dev, dev);

    isa_bus_new(&d->dev.qdev, pci_address_space_io(dev));
    piix4_dev = &d->dev;
    qemu_register_reset(piix4_reset, d);
    return 0;
}

int piix4_init(PCIBus *bus, ISABus **isa_bus, int devfn)
{
    PCIDevice *d;

    d = pci_create_simple_multifunction(bus, devfn, true, "PIIX4");
    *isa_bus = DO_UPCAST(ISABus, qbus, qdev_get_child_bus(&d->qdev, "isa.0"));
    return d->devfn;
}

static void piix4_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);
    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);

    k->no_hotplug = 1;
    k->init = piix4_initfn;
    k->vendor_id = PCI_VENDOR_ID_INTEL;
    k->device_id = PCI_DEVICE_ID_INTEL_82371AB_0;
    k->class_id = PCI_CLASS_BRIDGE_ISA;
    dc->desc = "ISA bridge";
    dc->no_user = 1;
    dc->vmsd = &vmstate_piix4;
}

static const TypeInfo piix4_info = {
    .name          = "PIIX4",
    .parent        = TYPE_PCI_DEVICE,
    .instance_size = sizeof(PIIX4State),
    .class_init    = piix4_class_init,
};

static void piix4_register_types(void)
{
    type_register_static(&piix4_info);
}

type_init(piix4_register_types)