hw: Add support for LSI SAS1068 (mptsas) device
[qemu.git] / include / hw / timer / i8254.h
1 /*
2 * QEMU 8253/8254 interval timer emulation
3 *
4 * Copyright (c) 2003-2004 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #ifndef HW_I8254_H
26 #define HW_I8254_H
27
28 #include "hw/hw.h"
29 #include "hw/isa/isa.h"
30
31 #define PIT_FREQ 1193182
32
33 typedef struct PITChannelInfo {
34 int gate;
35 int mode;
36 int initial_count;
37 int out;
38 } PITChannelInfo;
39
40 #define TYPE_I8254 "isa-pit"
41 #define TYPE_KVM_I8254 "kvm-pit"
42
43 static inline ISADevice *pit_init(ISABus *bus, int base, int isa_irq,
44 qemu_irq alt_irq)
45 {
46 DeviceState *dev;
47 ISADevice *d;
48
49 d = isa_create(bus, TYPE_I8254);
50 dev = DEVICE(d);
51 qdev_prop_set_uint32(dev, "iobase", base);
52 qdev_init_nofail(dev);
53 qdev_connect_gpio_out(dev, 0,
54 isa_irq >= 0 ? isa_get_irq(d, isa_irq) : alt_irq);
55
56 return d;
57 }
58
59 static inline ISADevice *kvm_pit_init(ISABus *bus, int base)
60 {
61 DeviceState *dev;
62 ISADevice *d;
63
64 d = isa_create(bus, TYPE_KVM_I8254);
65 dev = DEVICE(d);
66 qdev_prop_set_uint32(dev, "iobase", base);
67 qdev_init_nofail(dev);
68
69 return d;
70 }
71
72 void pit_set_gate(ISADevice *dev, int channel, int val);
73 void pit_get_channel_info(ISADevice *dev, int channel, PITChannelInfo *info);
74
75 #endif /* !HW_I8254_H */