root / hw / apm.c @ 2206d2a6
History | View | Annotate | Download (2.2 kB)
1 | 04762841 | Isaku Yamahata | /*
|
---|---|---|---|
2 | 04762841 | Isaku Yamahata | * QEMU PC APM controller Emulation
|
3 | 04762841 | Isaku Yamahata | * This is split out from acpi.c
|
4 | 04762841 | Isaku Yamahata | *
|
5 | 04762841 | Isaku Yamahata | * Copyright (c) 2006 Fabrice Bellard
|
6 | 04762841 | Isaku Yamahata | *
|
7 | 04762841 | Isaku Yamahata | * This library is free software; you can redistribute it and/or
|
8 | 04762841 | Isaku Yamahata | * modify it under the terms of the GNU Lesser General Public
|
9 | 04762841 | Isaku Yamahata | * License version 2 as published by the Free Software Foundation.
|
10 | 04762841 | Isaku Yamahata | *
|
11 | 04762841 | Isaku Yamahata | * This library is distributed in the hope that it will be useful,
|
12 | 04762841 | Isaku Yamahata | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 | 04762841 | Isaku Yamahata | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 | 04762841 | Isaku Yamahata | * Lesser General Public License for more details.
|
15 | 04762841 | Isaku Yamahata | *
|
16 | 04762841 | Isaku Yamahata | * You should have received a copy of the GNU Lesser General Public
|
17 | 04762841 | Isaku Yamahata | * License along with this library; if not, see <http://www.gnu.org/licenses/>
|
18 | 04762841 | Isaku Yamahata | */
|
19 | 04762841 | Isaku Yamahata | |
20 | 04762841 | Isaku Yamahata | #include "apm.h" |
21 | 04762841 | Isaku Yamahata | #include "hw.h" |
22 | 04762841 | Isaku Yamahata | |
23 | 04762841 | Isaku Yamahata | //#define DEBUG
|
24 | 04762841 | Isaku Yamahata | |
25 | 019ea978 | Isaku Yamahata | #ifdef DEBUG
|
26 | 019ea978 | Isaku Yamahata | # define APM_DPRINTF(format, ...) printf(format, ## __VA_ARGS__) |
27 | 019ea978 | Isaku Yamahata | #else
|
28 | 019ea978 | Isaku Yamahata | # define APM_DPRINTF(format, ...) do { } while (0) |
29 | 019ea978 | Isaku Yamahata | #endif
|
30 | 019ea978 | Isaku Yamahata | |
31 | 04762841 | Isaku Yamahata | /* fixed I/O location */
|
32 | 04762841 | Isaku Yamahata | #define APM_CNT_IOPORT 0xb2 |
33 | 04762841 | Isaku Yamahata | #define APM_STS_IOPORT 0xb3 |
34 | 04762841 | Isaku Yamahata | |
35 | 04762841 | Isaku Yamahata | static void apm_ioport_writeb(void *opaque, uint32_t addr, uint32_t val) |
36 | 04762841 | Isaku Yamahata | { |
37 | 04762841 | Isaku Yamahata | APMState *apm = opaque; |
38 | 04762841 | Isaku Yamahata | addr &= 1;
|
39 | 019ea978 | Isaku Yamahata | APM_DPRINTF("apm_ioport_writeb addr=0x%x val=0x%02x\n", addr, val);
|
40 | 04762841 | Isaku Yamahata | if (addr == 0) { |
41 | 04762841 | Isaku Yamahata | apm->apmc = val; |
42 | 04762841 | Isaku Yamahata | |
43 | 04762841 | Isaku Yamahata | if (apm->callback) {
|
44 | 04762841 | Isaku Yamahata | (apm->callback)(val, apm->arg); |
45 | 04762841 | Isaku Yamahata | } |
46 | 04762841 | Isaku Yamahata | } else {
|
47 | 04762841 | Isaku Yamahata | apm->apms = val; |
48 | 04762841 | Isaku Yamahata | } |
49 | 04762841 | Isaku Yamahata | } |
50 | 04762841 | Isaku Yamahata | |
51 | 04762841 | Isaku Yamahata | static uint32_t apm_ioport_readb(void *opaque, uint32_t addr) |
52 | 04762841 | Isaku Yamahata | { |
53 | 04762841 | Isaku Yamahata | APMState *apm = opaque; |
54 | 04762841 | Isaku Yamahata | uint32_t val; |
55 | 04762841 | Isaku Yamahata | |
56 | 04762841 | Isaku Yamahata | addr &= 1;
|
57 | 04762841 | Isaku Yamahata | if (addr == 0) { |
58 | 04762841 | Isaku Yamahata | val = apm->apmc; |
59 | 04762841 | Isaku Yamahata | } else {
|
60 | 04762841 | Isaku Yamahata | val = apm->apms; |
61 | 04762841 | Isaku Yamahata | } |
62 | 019ea978 | Isaku Yamahata | APM_DPRINTF("apm_ioport_readb addr=0x%x val=0x%02x\n", addr, val);
|
63 | 04762841 | Isaku Yamahata | return val;
|
64 | 04762841 | Isaku Yamahata | } |
65 | 04762841 | Isaku Yamahata | |
66 | 04762841 | Isaku Yamahata | const VMStateDescription vmstate_apm = {
|
67 | 04762841 | Isaku Yamahata | .name = "APM State",
|
68 | 04762841 | Isaku Yamahata | .version_id = 1,
|
69 | 04762841 | Isaku Yamahata | .minimum_version_id = 1,
|
70 | 04762841 | Isaku Yamahata | .minimum_version_id_old = 1,
|
71 | 04762841 | Isaku Yamahata | .fields = (VMStateField[]) { |
72 | 04762841 | Isaku Yamahata | VMSTATE_UINT8(apmc, APMState), |
73 | 04762841 | Isaku Yamahata | VMSTATE_UINT8(apms, APMState), |
74 | 04762841 | Isaku Yamahata | VMSTATE_END_OF_LIST() |
75 | 04762841 | Isaku Yamahata | } |
76 | 04762841 | Isaku Yamahata | }; |
77 | 04762841 | Isaku Yamahata | |
78 | 04762841 | Isaku Yamahata | void apm_init(APMState *apm, apm_ctrl_changed_t callback, void *arg) |
79 | 04762841 | Isaku Yamahata | { |
80 | 04762841 | Isaku Yamahata | apm->callback = callback; |
81 | 04762841 | Isaku Yamahata | apm->arg = arg; |
82 | 04762841 | Isaku Yamahata | |
83 | 04762841 | Isaku Yamahata | /* ioport 0xb2, 0xb3 */
|
84 | 04762841 | Isaku Yamahata | register_ioport_write(APM_CNT_IOPORT, 2, 1, apm_ioport_writeb, apm); |
85 | 04762841 | Isaku Yamahata | register_ioport_read(APM_CNT_IOPORT, 2, 1, apm_ioport_readb, apm); |
86 | 04762841 | Isaku Yamahata | } |