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1 | 04762841 | Isaku Yamahata | /*
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2 | 04762841 | Isaku Yamahata | * QEMU PC APM controller Emulation
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3 | 04762841 | Isaku Yamahata | * This is split out from acpi.c
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4 | 04762841 | Isaku Yamahata | *
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5 | 04762841 | Isaku Yamahata | * Copyright (c) 2006 Fabrice Bellard
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6 | 04762841 | Isaku Yamahata | *
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7 | 04762841 | Isaku Yamahata | * This library is free software; you can redistribute it and/or
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8 | 04762841 | Isaku Yamahata | * modify it under the terms of the GNU Lesser General Public
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9 | 04762841 | Isaku Yamahata | * License version 2 as published by the Free Software Foundation.
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10 | 04762841 | Isaku Yamahata | *
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11 | 04762841 | Isaku Yamahata | * This library is distributed in the hope that it will be useful,
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12 | 04762841 | Isaku Yamahata | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 04762841 | Isaku Yamahata | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | 04762841 | Isaku Yamahata | * Lesser General Public License for more details.
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15 | 04762841 | Isaku Yamahata | *
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16 | 04762841 | Isaku Yamahata | * You should have received a copy of the GNU Lesser General Public
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17 | 04762841 | Isaku Yamahata | * License along with this library; if not, see <http://www.gnu.org/licenses/>
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18 | 6b620ca3 | Paolo Bonzini | *
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19 | 6b620ca3 | Paolo Bonzini | * Contributions after 2012-01-13 are licensed under the terms of the
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20 | 6b620ca3 | Paolo Bonzini | * GNU GPL, version 2 or (at your option) any later version.
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21 | 04762841 | Isaku Yamahata | */
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22 | 04762841 | Isaku Yamahata | |
23 | 04762841 | Isaku Yamahata | #include "apm.h" |
24 | 04762841 | Isaku Yamahata | #include "hw.h" |
25 | 04762841 | Isaku Yamahata | |
26 | 04762841 | Isaku Yamahata | //#define DEBUG
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27 | 04762841 | Isaku Yamahata | |
28 | 019ea978 | Isaku Yamahata | #ifdef DEBUG
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29 | 019ea978 | Isaku Yamahata | # define APM_DPRINTF(format, ...) printf(format, ## __VA_ARGS__) |
30 | 019ea978 | Isaku Yamahata | #else
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31 | 019ea978 | Isaku Yamahata | # define APM_DPRINTF(format, ...) do { } while (0) |
32 | 019ea978 | Isaku Yamahata | #endif
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33 | 019ea978 | Isaku Yamahata | |
34 | 04762841 | Isaku Yamahata | /* fixed I/O location */
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35 | 04762841 | Isaku Yamahata | #define APM_CNT_IOPORT 0xb2 |
36 | 04762841 | Isaku Yamahata | #define APM_STS_IOPORT 0xb3 |
37 | 04762841 | Isaku Yamahata | |
38 | 04762841 | Isaku Yamahata | static void apm_ioport_writeb(void *opaque, uint32_t addr, uint32_t val) |
39 | 04762841 | Isaku Yamahata | { |
40 | 04762841 | Isaku Yamahata | APMState *apm = opaque; |
41 | 04762841 | Isaku Yamahata | addr &= 1;
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42 | 019ea978 | Isaku Yamahata | APM_DPRINTF("apm_ioport_writeb addr=0x%x val=0x%02x\n", addr, val);
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43 | 04762841 | Isaku Yamahata | if (addr == 0) { |
44 | 04762841 | Isaku Yamahata | apm->apmc = val; |
45 | 04762841 | Isaku Yamahata | |
46 | 04762841 | Isaku Yamahata | if (apm->callback) {
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47 | 04762841 | Isaku Yamahata | (apm->callback)(val, apm->arg); |
48 | 04762841 | Isaku Yamahata | } |
49 | 04762841 | Isaku Yamahata | } else {
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50 | 04762841 | Isaku Yamahata | apm->apms = val; |
51 | 04762841 | Isaku Yamahata | } |
52 | 04762841 | Isaku Yamahata | } |
53 | 04762841 | Isaku Yamahata | |
54 | 04762841 | Isaku Yamahata | static uint32_t apm_ioport_readb(void *opaque, uint32_t addr) |
55 | 04762841 | Isaku Yamahata | { |
56 | 04762841 | Isaku Yamahata | APMState *apm = opaque; |
57 | 04762841 | Isaku Yamahata | uint32_t val; |
58 | 04762841 | Isaku Yamahata | |
59 | 04762841 | Isaku Yamahata | addr &= 1;
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60 | 04762841 | Isaku Yamahata | if (addr == 0) { |
61 | 04762841 | Isaku Yamahata | val = apm->apmc; |
62 | 04762841 | Isaku Yamahata | } else {
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63 | 04762841 | Isaku Yamahata | val = apm->apms; |
64 | 04762841 | Isaku Yamahata | } |
65 | 019ea978 | Isaku Yamahata | APM_DPRINTF("apm_ioport_readb addr=0x%x val=0x%02x\n", addr, val);
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66 | 04762841 | Isaku Yamahata | return val;
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67 | 04762841 | Isaku Yamahata | } |
68 | 04762841 | Isaku Yamahata | |
69 | 04762841 | Isaku Yamahata | const VMStateDescription vmstate_apm = {
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70 | 04762841 | Isaku Yamahata | .name = "APM State",
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71 | 04762841 | Isaku Yamahata | .version_id = 1,
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72 | 04762841 | Isaku Yamahata | .minimum_version_id = 1,
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73 | 04762841 | Isaku Yamahata | .minimum_version_id_old = 1,
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74 | 04762841 | Isaku Yamahata | .fields = (VMStateField[]) { |
75 | 04762841 | Isaku Yamahata | VMSTATE_UINT8(apmc, APMState), |
76 | 04762841 | Isaku Yamahata | VMSTATE_UINT8(apms, APMState), |
77 | 04762841 | Isaku Yamahata | VMSTATE_END_OF_LIST() |
78 | 04762841 | Isaku Yamahata | } |
79 | 04762841 | Isaku Yamahata | }; |
80 | 04762841 | Isaku Yamahata | |
81 | 04762841 | Isaku Yamahata | void apm_init(APMState *apm, apm_ctrl_changed_t callback, void *arg) |
82 | 04762841 | Isaku Yamahata | { |
83 | 04762841 | Isaku Yamahata | apm->callback = callback; |
84 | 04762841 | Isaku Yamahata | apm->arg = arg; |
85 | 04762841 | Isaku Yamahata | |
86 | 04762841 | Isaku Yamahata | /* ioport 0xb2, 0xb3 */
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87 | 04762841 | Isaku Yamahata | register_ioport_write(APM_CNT_IOPORT, 2, 1, apm_ioport_writeb, apm); |
88 | 04762841 | Isaku Yamahata | register_ioport_read(APM_CNT_IOPORT, 2, 1, apm_ioport_readb, apm); |
89 | 04762841 | Isaku Yamahata | } |