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25#ifndef HW_I8254_H
26#define HW_I8254_H
27
28#include "hw/hw.h"
29#include "hw/qdev.h"
30#include "hw/isa/isa.h"
31
32#define PIT_FREQ 1193182
33
34typedef struct PITChannelInfo {
35 int gate;
36 int mode;
37 int initial_count;
38 int out;
39} PITChannelInfo;
40
41#define TYPE_PIT_COMMON "pit-common"
42#define PIT_COMMON(obj) \
43 OBJECT_CHECK(PITCommonState, (obj), TYPE_PIT_COMMON)
44#define PIT_COMMON_CLASS(klass) \
45 OBJECT_CLASS_CHECK(PITCommonClass, (klass), TYPE_PIT_COMMON)
46#define PIT_COMMON_GET_CLASS(obj) \
47 OBJECT_GET_CLASS(PITCommonClass, (obj), TYPE_PIT_COMMON)
48
49#define TYPE_I8254 "isa-pit"
50#define TYPE_KVM_I8254 "kvm-pit"
51
52static inline ISADevice *i8254_pit_init(ISABus *bus, int base, int isa_irq,
53 qemu_irq alt_irq)
54{
55 DeviceState *dev;
56 ISADevice *d;
57
58 d = isa_create(bus, TYPE_I8254);
59 dev = DEVICE(d);
60 qdev_prop_set_uint32(dev, "iobase", base);
61 qdev_init_nofail(dev);
62 qdev_connect_gpio_out(dev, 0,
63 isa_irq >= 0 ? isa_get_irq(d, isa_irq) : alt_irq);
64
65 return d;
66}
67
68static inline ISADevice *kvm_pit_init(ISABus *bus, int base)
69{
70 DeviceState *dev;
71 ISADevice *d;
72
73 d = isa_create(bus, TYPE_KVM_I8254);
74 dev = DEVICE(d);
75 qdev_prop_set_uint32(dev, "iobase", base);
76 qdev_init_nofail(dev);
77
78 return d;
79}
80
81void pit_set_gate(ISADevice *dev, int channel, int val);
82void pit_get_channel_info(ISADevice *dev, int channel, PITChannelInfo *info);
83
84#endif
85