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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [asm-ppc64/] [time.h] - Blame information for rev 1774

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/*
 * Common time prototypes and such for all ppc machines.
 *
 * Written by Cort Dougan (cort@cs.nmt.edu) to merge
 * Paul Mackerras' version and mine for PReP and Pmac.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */
 
#ifndef __PPC64_TIME_H
#define __PPC64_TIME_H
 
#ifdef __KERNEL__
#include <linux/types.h>
#include <linux/mc146818rtc.h>
 
#include <asm/processor.h>
#include <asm/paca.h>
#include <asm/iSeries/HvCall.h>
 
/* time.c */
extern unsigned long tb_ticks_per_jiffy;
extern unsigned long tb_ticks_per_usec;
extern unsigned long tb_ticks_per_sec;
extern unsigned long tb_to_xs;
extern unsigned long tb_last_stamp;
 
struct rtc_time;
extern void to_tm(int tim, struct rtc_time * tm);
extern time_t last_rtc_update;
 
struct div_result {
        unsigned long result_high;
        unsigned long result_low;
};
 
int via_calibrate_decr(void);
 
static __inline__ unsigned long get_tb(void)
{
        return mftb();
}
 
/* Accessor functions for the decrementer register. */
static __inline__ unsigned int get_dec(void)
{
        return (mfspr(SPRN_DEC));
}
 
static __inline__ void set_dec(int val)
{
#ifdef CONFIG_PPC_ISERIES
        struct paca_struct *lpaca = get_paca();
        int cur_dec;
 
        if (lpaca->xLpPaca.xSharedProc) {
                lpaca->xLpPaca.xVirtualDecr = val;
                cur_dec = get_dec();
                lpaca->xLpPaca.xSavedDecr = cur_dec;
                if (cur_dec > val)
                        HvCall_setVirtualDecr();
        } else
#endif
                mtspr(SPRN_DEC, val);
}
 
static inline unsigned long tb_ticks_since(unsigned long tstamp)
{
        return get_tb() - tstamp;
}
 
#define mulhdu(x,y) \
({unsigned long z; asm ("mulhdu %0,%1,%2" : "=r" (z) : "r" (x), "r" (y)); z;})
 
void div128_by_32( unsigned long dividend_high, unsigned long dividend_low,
                   unsigned divisor, struct div_result *dr );
#endif /* __KERNEL__ */
#endif /* __PPC64_TIME_H */

Line No.	Rev	Author	Line
1	1275	phoenix	`/*`
2			`* Common time prototypes and such for all ppc machines.`
3			`*`
4			`* Written by Cort Dougan (cort@cs.nmt.edu) to merge`
5			`* Paul Mackerras' version and mine for PReP and Pmac.`
6			`*`
7			`* This program is free software; you can redistribute it and/or`
8			`* modify it under the terms of the GNU General Public License`
9			`* as published by the Free Software Foundation; either version`
10			`* 2 of the License, or (at your option) any later version.`
11			`*/`
12
13			`#ifndef __PPC64_TIME_H`
14			`#define __PPC64_TIME_H`
15
16			`#ifdef __KERNEL__`
17			`#include <linux/types.h>`
18			`#include <linux/mc146818rtc.h>`
19
20			`#include <asm/processor.h>`
21			`#include <asm/paca.h>`
22			`#include <asm/iSeries/HvCall.h>`
23
24			`/* time.c */`
25			`extern unsigned long tb_ticks_per_jiffy;`
26			`extern unsigned long tb_ticks_per_usec;`
27			`extern unsigned long tb_ticks_per_sec;`
28			`extern unsigned long tb_to_xs;`
29			`extern unsigned long tb_last_stamp;`
30
31			`struct rtc_time;`
32			`extern void to_tm(int tim, struct rtc_time * tm);`
33			`extern time_t last_rtc_update;`
34
35			`struct div_result {`
36			`unsigned long result_high;`
37			`unsigned long result_low;`
38			`};`
39
40			`int via_calibrate_decr(void);`
41
42			`static __inline__ unsigned long get_tb(void)`
43			`{`
44			`return mftb();`
45			`}`
46
47			`/* Accessor functions for the decrementer register. */`
48			`static __inline__ unsigned int get_dec(void)`
49			`{`
50			`return (mfspr(SPRN_DEC));`
51			`}`
52
53			`static __inline__ void set_dec(int val)`
54			`{`
55			`#ifdef CONFIG_PPC_ISERIES`
56			`struct paca_struct *lpaca = get_paca();`
57			`int cur_dec;`
58
59			`if (lpaca->xLpPaca.xSharedProc) {`
60			`lpaca->xLpPaca.xVirtualDecr = val;`
61			`cur_dec = get_dec();`
62			`lpaca->xLpPaca.xSavedDecr = cur_dec;`
63			`if (cur_dec > val)`
64			`HvCall_setVirtualDecr();`
65			`} else`
66			`#endif`
67			`mtspr(SPRN_DEC, val);`
68			`}`
69
70			`static inline unsigned long tb_ticks_since(unsigned long tstamp)`
71			`{`
72			`return get_tb() - tstamp;`
73			`}`
74
75			`#define mulhdu(x,y) \`
76			`({unsigned long z; asm ("mulhdu %0,%1,%2" : "=r" (z) : "r" (x), "r" (y)); z;})`
77
78			`void div128_by_32( unsigned long dividend_high, unsigned long dividend_low,`
79			`unsigned divisor, struct div_result *dr );`
80			`#endif /* __KERNEL__ */`
81			`#endif /* __PPC64_TIME_H */`

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [asm-ppc64/] [time.h] - Blame information for rev 1774