hw/arm/raspi: fix CPRMAN base address
[qemu.git] / hw / isa / i82378.c
1 /*
2 * QEMU Intel i82378 emulation (PCI to ISA bridge)
3 *
4 * Copyright (c) 2010-2011 Hervé Poussineau
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 */
19
20 #include "qemu/osdep.h"
21 #include "hw/pci/pci.h"
22 #include "hw/irq.h"
23 #include "hw/intc/i8259.h"
24 #include "hw/timer/i8254.h"
25 #include "migration/vmstate.h"
26 #include "hw/audio/pcspk.h"
27 #include "qom/object.h"
28
29 #define TYPE_I82378 "i82378"
30 OBJECT_DECLARE_SIMPLE_TYPE(I82378State, I82378)
31
32 struct I82378State {
33 PCIDevice parent_obj;
34
35 qemu_irq out[2];
36 qemu_irq *i8259;
37 MemoryRegion io;
38 };
39
40 static const VMStateDescription vmstate_i82378 = {
41 .name = "pci-i82378",
42 .version_id = 0,
43 .minimum_version_id = 0,
44 .fields = (VMStateField[]) {
45 VMSTATE_PCI_DEVICE(parent_obj, I82378State),
46 VMSTATE_END_OF_LIST()
47 },
48 };
49
50 static void i82378_request_out0_irq(void *opaque, int irq, int level)
51 {
52 I82378State *s = opaque;
53 qemu_set_irq(s->out[0], level);
54 }
55
56 static void i82378_request_pic_irq(void *opaque, int irq, int level)
57 {
58 DeviceState *dev = opaque;
59 I82378State *s = I82378(dev);
60
61 qemu_set_irq(s->i8259[irq], level);
62 }
63
64 static void i82378_realize(PCIDevice *pci, Error **errp)
65 {
66 DeviceState *dev = DEVICE(pci);
67 I82378State *s = I82378(dev);
68 uint8_t *pci_conf;
69 ISABus *isabus;
70 ISADevice *pit;
71
72 pci_conf = pci->config;
73 pci_set_word(pci_conf + PCI_COMMAND,
74 PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
75 pci_set_word(pci_conf + PCI_STATUS,
76 PCI_STATUS_DEVSEL_MEDIUM);
77
78 pci_config_set_interrupt_pin(pci_conf, 1); /* interrupt pin 0 */
79
80 isabus = isa_bus_new(dev, get_system_memory(),
81 pci_address_space_io(pci), errp);
82 if (!isabus) {
83 return;
84 }
85
86 /* This device has:
87 2 82C59 (irq)
88 1 82C54 (pit)
89 2 82C37 (dma)
90 NMI
91 Utility Bus Support Registers
92
93 All devices accept byte access only, except timer
94 */
95
96 /* 2 82C59 (irq) */
97 s->i8259 = i8259_init(isabus,
98 qemu_allocate_irq(i82378_request_out0_irq, s, 0));
99 isa_bus_irqs(isabus, s->i8259);
100
101 /* 1 82C54 (pit) */
102 pit = i8254_pit_init(isabus, 0x40, 0, NULL);
103
104 /* speaker */
105 pcspk_init(isa_new(TYPE_PC_SPEAKER), isabus, pit);
106
107 /* 2 82C37 (dma) */
108 isa_create_simple(isabus, "i82374");
109 }
110
111 static void i82378_init(Object *obj)
112 {
113 DeviceState *dev = DEVICE(obj);
114 I82378State *s = I82378(obj);
115
116 qdev_init_gpio_out(dev, s->out, 1);
117 qdev_init_gpio_in(dev, i82378_request_pic_irq, 16);
118 }
119
120 static void i82378_class_init(ObjectClass *klass, void *data)
121 {
122 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
123 DeviceClass *dc = DEVICE_CLASS(klass);
124
125 k->realize = i82378_realize;
126 k->vendor_id = PCI_VENDOR_ID_INTEL;
127 k->device_id = PCI_DEVICE_ID_INTEL_82378;
128 k->revision = 0x03;
129 k->class_id = PCI_CLASS_BRIDGE_ISA;
130 dc->vmsd = &vmstate_i82378;
131 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
132 }
133
134 static const TypeInfo i82378_type_info = {
135 .name = TYPE_I82378,
136 .parent = TYPE_PCI_DEVICE,
137 .instance_size = sizeof(I82378State),
138 .instance_init = i82378_init,
139 .class_init = i82378_class_init,
140 .interfaces = (InterfaceInfo[]) {
141 { INTERFACE_CONVENTIONAL_PCI_DEVICE },
142 { },
143 },
144 };
145
146 static void i82378_register_types(void)
147 {
148 type_register_static(&i82378_type_info);
149 }
150
151 type_init(i82378_register_types)