1 /*---------------------------------------------------------------------------*
2 Project: Cafe OS Core
3 File: OSCore.h
4
5 Copyright (C) Nintendo. All rights reserved.
6
7 These coded instructions, statements, and computer programs contain
8 proprietary information of Nintendo of America Inc. and/or Nintendo
9 Company Ltd., and are protected by Federal copyright law. They may
10 not be disclosed to third parties or copied or duplicated in any form,
11 in whole or in part, without the prior written consent of Nintendo.
12
13 *---------------------------------------------------------------------------*/
14
15 #ifndef __OSTIME_H__
16 #define __OSTIME_H__
17
18 #define OSMicrosecondsToNanoseconds(mics) ((mics) * 1000LL)
19 #define OSMillisecondsToNanoseconds(mils) ((mils) * 1000000LL)
20 #define OSSecondsToNanoseconds(secs) ((secs) * 1000000000LL)
21
22 #define OSNanosecondsToMicroseconds(nano) ((nano) / 1000LL)
23 #define OSNanosecondsToMilliseconds(nano) ((nano) / 1000000LL)
24 #define OSNanosecondsToSeconds(nano) ((nano) / 1000000000LL)
25
26 #ifndef _ASSEMBLER
27 #include <types.h>
28
29 #ifdef __ghs__
30 #include <ppc_ghs.h> // for __MFTBR(U)
31 #endif
32
33 #ifdef __cplusplus
34 extern "C" {
35 #endif
36
37 typedef s64 OSTime;
38 typedef s64 OSTimeSeconds;
39 typedef s64 OSTimeMilliseconds;
40 typedef s64 OSTimeMicroseconds;
41 typedef s64 OSTimeNanoseconds;
42 typedef u32 OSTick;
43
44 #define __OSBusClock (OSGetSystemInfo()->busClockSpeed)
45 #define __OSCoreClock (OSGetSystemInfo()->coreClockSpeed)
46
47 #define OS_BUS_CLOCK __OSBusClock
48 #define OS_CORE_CLOCK __OSCoreClock
49 #define OS_TIMER_CLOCK (OS_BUS_CLOCK/4)
50
51 #define OSTicksToCycles( ticks ) (((ticks) * ((OS_CORE_CLOCK * 2) / OS_TIMER_CLOCK)) / 2)
52 #define OSTicksToSeconds( ticks ) ((ticks) / OS_TIMER_CLOCK)
53 #define OSSecondsToTicks( sec ) ((sec) * OS_TIMER_CLOCK)
54
55 #if LEGACY_TIME_CONVERSIONS
56 #define OSTicksToMilliseconds( ticks ) ((ticks) / (OS_TIMER_CLOCK / 1000))
57 #define OSTicksToMicroseconds( ticks ) (((ticks) * 8) / (OS_TIMER_CLOCK / 125000))
58 #define OSTicksToNanoseconds( ticks ) (((ticks) * 8000) / (OS_TIMER_CLOCK / 125000))
59
60 #define OSMillisecondsToTicks( msec ) ((msec) * (OS_TIMER_CLOCK / 1000))
61 #define OSMicrosecondsToTicks( usec ) (((usec) * (OS_TIMER_CLOCK / 125000)) / 8)
62 #define OSNanosecondsToTicks( nsec ) (((nsec) * (OS_TIMER_CLOCK / 125000)) / 8000)
63 #else
64 #define OSTicksToMilliseconds( ticks ) ((((u64)(ticks)) * 1000ULL) / ((u64) OS_TIMER_CLOCK))
65 #define OSTicksToMicroseconds( ticks ) ((((u64)(ticks)) * 1000000ULL) / ((u64) OS_TIMER_CLOCK))
66 #define OSTicksToNanoseconds( ticks ) ((((u64)(ticks)) * 32000ULL) / ((u64) OS_TIMER_CLOCK / 31250))
67
68 #define OSMillisecondsToTicks( msec ) ((((u64)(msec)) * OS_TIMER_CLOCK) / 1000)
69 #define OSMicrosecondsToTicks( usec ) ((((u64)(usec)) * OS_TIMER_CLOCK) / 1000000)
70 #define OSNanosecondsToTicks( nsec ) ((((u64)(nsec)) * ((u64) OS_TIMER_CLOCK / 31250)) / 32000)
71 #endif
72
73
74
75 #define OSDiffTick(tick1, tick0) ((s32) (tick1) - (s32) (tick0))
76
77 OSTick OSGetTick( void );
78 OSTime OSGetTime( void );
79 OSTime OSGetSystemTime( void );
80
81 typedef struct OSCalendarTime
82 {
83 int sec; // seconds after the minute [0, 59]
84 int min; // minutes after the hour [0, 59]
85 int hour; // hours since midnight [0, 23]
86 int mday; // day of the month [1, 31]
87 int mon; // month since January [0, 11]
88 int year; // years since 0000
89 int wday; // days since Sunday [0, 6]
90 int yday; // days since January 1 [0, 365]
91
92 int msec; // milliseconds after the second [0,999]
93 int usec; // microseconds after the millisecond [0,999]
94 } OSCalendarTime;
95
96 OSTime OSCalendarTimeToTicks( OSCalendarTime* td );
97 void OSTicksToCalendarTime( OSTime ticks, OSCalendarTime* td );
98
99 void OSWaitMicroseconds(OSTimeMicroseconds microseconds);
100
101 #ifdef __ghs__
OSInlineGetSystemTime(void)102 static inline OSTime OSInlineGetSystemTime(void)
103 {
104 u32 timeLower;
105 u32 timeUpper1;
106 u32 timeUpper2;
107
108 OSTime resultTime;
109
110 do
111 {
112 timeUpper1 = __MFTBU();
113 timeLower = __MFTB();
114 timeUpper2 = __MFTBU();
115 } while (timeUpper1 != timeUpper2);
116
117 resultTime = (((OSTime) timeUpper1) << 32) | ((OSTime) timeLower);
118 return resultTime;
119 }
120 #endif
121
122 #endif // _ASSEMBLER
123
124 #ifdef __cplusplus
125 }
126 #endif
127
128 #endif // __OSTIME_H__
129
130