2 * QEMU Intel i82378 emulation (PCI to ISA bridge)
4 * Copyright (c) 2010-2011 Hervé Poussineau
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.
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.
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/>.
20 #include "qemu/osdep.h"
21 #include "hw/pci/pci.h"
22 #include "hw/i386/pc.h"
23 #include "hw/timer/i8254.h"
24 #include "hw/audio/pcspk.h"
26 #define TYPE_I82378 "i82378"
28 OBJECT_CHECK(I82378State, (obj), TYPE_I82378)
30 typedef struct I82378State
{
38 static const VMStateDescription vmstate_i82378
= {
41 .minimum_version_id
= 0,
42 .fields
= (VMStateField
[]) {
43 VMSTATE_PCI_DEVICE(parent_obj
, I82378State
),
48 static void i82378_request_out0_irq(void *opaque
, int irq
, int level
)
50 I82378State
*s
= opaque
;
51 qemu_set_irq(s
->out
[0], level
);
54 static void i82378_request_pic_irq(void *opaque
, int irq
, int level
)
56 DeviceState
*dev
= opaque
;
57 I82378State
*s
= I82378(dev
);
59 qemu_set_irq(s
->i8259
[irq
], level
);
62 static void i82378_realize(PCIDevice
*pci
, Error
**errp
)
64 DeviceState
*dev
= DEVICE(pci
);
65 I82378State
*s
= I82378(dev
);
70 pci_conf
= pci
->config
;
71 pci_set_word(pci_conf
+ PCI_COMMAND
,
72 PCI_COMMAND_IO
| PCI_COMMAND_MEMORY
| PCI_COMMAND_MASTER
);
73 pci_set_word(pci_conf
+ PCI_STATUS
,
74 PCI_STATUS_DEVSEL_MEDIUM
);
76 pci_config_set_interrupt_pin(pci_conf
, 1); /* interrupt pin 0 */
78 isabus
= isa_bus_new(dev
, get_system_memory(),
79 pci_address_space_io(pci
), errp
);
89 Utility Bus Support Registers
91 All devices accept byte access only, except timer
95 s
->i8259
= i8259_init(isabus
,
96 qemu_allocate_irq(i82378_request_out0_irq
, s
, 0));
97 isa_bus_irqs(isabus
, s
->i8259
);
100 isa
= i8254_pit_init(isabus
, 0x40, 0, NULL
);
103 pcspk_init(isabus
, isa
);
106 isa
= isa_create_simple(isabus
, "i82374");
109 isa_create_simple(isabus
, "mc146818rtc");
112 static void i82378_init(Object
*obj
)
114 DeviceState
*dev
= DEVICE(obj
);
115 I82378State
*s
= I82378(obj
);
117 qdev_init_gpio_out(dev
, s
->out
, 1);
118 qdev_init_gpio_in(dev
, i82378_request_pic_irq
, 16);
121 static void i82378_class_init(ObjectClass
*klass
, void *data
)
123 PCIDeviceClass
*k
= PCI_DEVICE_CLASS(klass
);
124 DeviceClass
*dc
= DEVICE_CLASS(klass
);
126 k
->realize
= i82378_realize
;
127 k
->vendor_id
= PCI_VENDOR_ID_INTEL
;
128 k
->device_id
= PCI_DEVICE_ID_INTEL_82378
;
130 k
->class_id
= PCI_CLASS_BRIDGE_ISA
;
131 dc
->vmsd
= &vmstate_i82378
;
132 set_bit(DEVICE_CATEGORY_BRIDGE
, dc
->categories
);
135 static const TypeInfo i82378_type_info
= {
137 .parent
= TYPE_PCI_DEVICE
,
138 .instance_size
= sizeof(I82378State
),
139 .instance_init
= i82378_init
,
140 .class_init
= i82378_class_init
,
141 .interfaces
= (InterfaceInfo
[]) {
142 { INTERFACE_CONVENTIONAL_PCI_DEVICE
},
147 static void i82378_register_types(void)
149 type_register_static(&i82378_type_info
);
152 type_init(i82378_register_types
)