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25#ifndef HW_I8254_H
26#define HW_I8254_H
27
28#include "hw/qdev-properties.h"
29#include "hw/isa/isa.h"
30
31#define PIT_FREQ 1193182
32
33typedef struct PITChannelInfo {
34 int gate;
35 int mode;
36 int initial_count;
37 int out;
38} PITChannelInfo;
39
40#define TYPE_PIT_COMMON "pit-common"
41#define PIT_COMMON(obj) \
42 OBJECT_CHECK(PITCommonState, (obj), TYPE_PIT_COMMON)
43#define PIT_COMMON_CLASS(klass) \
44 OBJECT_CLASS_CHECK(PITCommonClass, (klass), TYPE_PIT_COMMON)
45#define PIT_COMMON_GET_CLASS(obj) \
46 OBJECT_GET_CLASS(PITCommonClass, (obj), TYPE_PIT_COMMON)
47
48#define TYPE_I8254 "isa-pit"
49#define TYPE_KVM_I8254 "kvm-pit"
50
51static inline ISADevice *i8254_pit_init(ISABus *bus, int base, int isa_irq,
52 qemu_irq alt_irq)
53{
54 DeviceState *dev;
55 ISADevice *d;
56
57 d = isa_create(bus, TYPE_I8254);
58 dev = DEVICE(d);
59 qdev_prop_set_uint32(dev, "iobase", base);
60 qdev_init_nofail(dev);
61 qdev_connect_gpio_out(dev, 0,
62 isa_irq >= 0 ? isa_get_irq(d, isa_irq) : alt_irq);
63
64 return d;
65}
66
67static inline ISADevice *kvm_pit_init(ISABus *bus, int base)
68{
69 DeviceState *dev;
70 ISADevice *d;
71
72 d = isa_create(bus, TYPE_KVM_I8254);
73 dev = DEVICE(d);
74 qdev_prop_set_uint32(dev, "iobase", base);
75 qdev_init_nofail(dev);
76
77 return d;
78}
79
80void pit_set_gate(ISADevice *dev, int channel, int val);
81void pit_get_channel_info(ISADevice *dev, int channel, PITChannelInfo *info);
82
83#endif
84