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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /*
26: * Copyright 1994 NeXT Computer, Inc.
27: * All rights reserved.
28: */
29:
30: #ifdef KERNEL_PRIVATE
31:
32: #import <mach/mach_types.h>
33:
34: #import <machdep/i386/seg.h>
35: #import <machdep/i386/bios.h>
36:
37: #import <kern/power.h>
38:
39: #import <architecture/i386/frame.h>
40:
41: /* APM 1.0 */
42: #define APM_BIOS_CODE 0x53
43: #define APM_BIOS_IDLE 0x05
44: #define APM_BIOS_BUSY 0x06
45: #define APM_BIOS_SETSTATE 0x07
46: #define APM_BIOS_DISABLE 0x08
47: #define APM_BIOS_DEFAULT 0x09
48: #define APM_BIOS_GETSTATUS 0x0A
49: #define APM_BIOS_GETEVENT 0x0B
50:
51: /* APM 1.1 */
52: #define APM_BIOS_GETSTATE 0x0C
53: #define APM_BIOS_ENBL_DEVICE 0x0D
54: #define APM_BIOS_VERSION 0x0E
55: #define APM_BIOS_ENGAGE 0x0F
56:
57: static unsigned long APM_BIOS_addr;
58:
59: static inline void
60: initBIOSBuf(
61: biosBuf_t *bb,
62: unsigned char code
63: )
64: {
65: union {
66: unsigned short data;
67: sel_t sel;
68: } u;
69:
70: bb->eax.r.h = APM_BIOS_CODE;
71: bb->eax.r.l = code;
72: u.sel = APMCODE32_SEL;
73: bb->cs = u.data;
74: u.sel = KDS_SEL;
75: bb->ds = u.data;
76: bb->addr = APM_BIOS_addr;
77: }
78:
79: static inline PMReturn
80: BIOSToPM(
81: int biosReturn
82: )
83: {
84: if (biosReturn == 0x00)
85: return PM_R_UNKNOWN;
86: else
87: return (PMReturn)pm_err(biosReturn);
88: }
89:
90: /*
91: * Inlines for APM BIOS calls.
92: */
93:
94: static inline PMReturn
95: APMBIOS_Idle()
96: {
97: biosBuf_t bb;
98:
99: initBIOSBuf(&bb, APM_BIOS_IDLE);
100: bios32(&bb);
101: if ((bb.flags & EFL_CF) == 0)
102: return PM_R_SUCCESS;
103: else
104: return BIOSToPM(bb.eax.r.h);
105: }
106:
107: static inline PMReturn
108: APMBIOS_Busy()
109: {
110: biosBuf_t bb;
111:
112: initBIOSBuf(&bb, APM_BIOS_BUSY);
113: bios32(&bb);
114: if ((bb.flags & EFL_CF) == 0)
115: return PM_R_SUCCESS;
116: else
117: return BIOSToPM(bb.eax.r.h);
118: }
119:
120: static inline PMReturn
121: APMBIOS_SetPowerState(
122: unsigned short deviceID,
123: unsigned short stateID
124: )
125: {
126: biosBuf_t bb;
127:
128: initBIOSBuf(&bb, APM_BIOS_SETSTATE);
129: bb.ebx.rx = deviceID;
130: bb.ecx.rx = stateID;
131: bios32(&bb);
132: if ((bb.flags & EFL_CF) == 0)
133: return PM_R_SUCCESS;
134: else
135: return BIOSToPM(bb.eax.r.h);
136: }
137:
138: static inline PMReturn
139: APMBIOS_GetPowerStatus(
140: unsigned char *line_status,
141: unsigned char *batt_status,
142: unsigned char *batt_life
143: )
144: {
145: biosBuf_t bb;
146:
147: initBIOSBuf(&bb, APM_BIOS_GETSTATUS);
148: bb.ebx.rx = 0x0001;
149: bios32(&bb);
150: if ((bb.flags & EFL_CF) == 0) {
151: *line_status = bb.ebx.r.h;
152: *batt_status = bb.ebx.r.l;
153: *batt_life = bb.ecx.r.l;
154: return PM_R_SUCCESS;
155: }
156: return BIOSToPM(bb.eax.r.h);
157: }
158:
159: static inline PMReturn
160: APMBIOS_GetPowerEvent(
161: unsigned short *event_code
162: )
163: {
164: biosBuf_t bb;
165:
166: initBIOSBuf(&bb, APM_BIOS_GETEVENT);
167: bios32(&bb);
168: if ((bb.flags & EFL_CF) == 0) {
169: *event_code = bb.ebx.rx;
170: return PM_R_SUCCESS;
171: }
172: return BIOSToPM(bb.eax.r.h);
173: }
174:
175: static inline PMReturn
176: APMBIOS_SetSystemPowerManagement(
177: int enabled
178: )
179: {
180: biosBuf_t bb;
181:
182: initBIOSBuf(&bb, APM_BIOS_DISABLE);
183: bb.ecx.rx = enabled ? 1 : 0;
184: bb.ebx.rx = 0xFFFF; // entire system
185: bios32(&bb);
186: if ((bb.flags & EFL_CF) == 0)
187: return PM_R_SUCCESS;
188: return BIOSToPM(bb.eax.r.h);
189: }
190:
191: static inline PMReturn
192: APMBIOS_RestoreDefaults(void)
193: {
194: biosBuf_t bb;
195:
196: initBIOSBuf(&bb, APM_BIOS_DEFAULT);
197: bb.ebx.rx = 0xFFFF;
198: bios32(&bb);
199: if ((bb.flags & EFL_CF) == 0)
200: return PM_R_SUCCESS;
201: return BIOSToPM(bb.eax.r.h);
202: }
203:
204:
205: #endif /* KERNEL_PRIVATE */
206:
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