mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 19:53:59 +08:00
d15f05eb8c
The variable ccount_nsec has been renamed to nsec_per_ccount
in arch/xtensa/kernel/time.c in 2b8aea74 (2007-08-05),
but the fix failed to rename the variable in
arch/xtensa/include/asm/timex.h as well.
Signed-off-by: Oskar Schirmer <os@emlix.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
/*
|
|
* include/asm-xtensa/timex.h
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 2001 - 2005 Tensilica Inc.
|
|
*/
|
|
|
|
#ifndef _XTENSA_TIMEX_H
|
|
#define _XTENSA_TIMEX_H
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <asm/processor.h>
|
|
#include <linux/stringify.h>
|
|
|
|
#define _INTLEVEL(x) XCHAL_INT ## x ## _LEVEL
|
|
#define INTLEVEL(x) _INTLEVEL(x)
|
|
|
|
#if INTLEVEL(XCHAL_TIMER0_INTERRUPT) == 1
|
|
# define LINUX_TIMER 0
|
|
# define LINUX_TIMER_INT XCHAL_TIMER0_INTERRUPT
|
|
#elif INTLEVEL(XCHAL_TIMER1_INTERRUPT) == 1
|
|
# define LINUX_TIMER 1
|
|
# define LINUX_TIMER_INT XCHAL_TIMER1_INTERRUPT
|
|
#elif INTLEVEL(XCHAL_TIMER2_INTERRUPT) == 1
|
|
# define LINUX_TIMER 2
|
|
# define LINUX_TIMER_INT XCHAL_TIMER2_INTERRUPT
|
|
#else
|
|
# error "Bad timer number for Linux configurations!"
|
|
#endif
|
|
|
|
#define LINUX_TIMER_MASK (1L << LINUX_TIMER_INT)
|
|
|
|
#define CLOCK_TICK_RATE 1193180 /* (everyone is using this value) */
|
|
#define CLOCK_TICK_FACTOR 20 /* Factor of both 10^6 and CLOCK_TICK_RATE */
|
|
|
|
#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
|
|
extern unsigned long ccount_per_jiffy;
|
|
extern unsigned long nsec_per_ccount;
|
|
#define CCOUNT_PER_JIFFY ccount_per_jiffy
|
|
#define NSEC_PER_CCOUNT nsec_per_ccount
|
|
#else
|
|
#define CCOUNT_PER_JIFFY (CONFIG_XTENSA_CPU_CLOCK*(1000000UL/HZ))
|
|
#define NSEC_PER_CCOUNT (1000UL / CONFIG_XTENSA_CPU_CLOCK)
|
|
#endif
|
|
|
|
|
|
typedef unsigned long long cycles_t;
|
|
|
|
/*
|
|
* Only used for SMP.
|
|
*/
|
|
|
|
extern cycles_t cacheflush_time;
|
|
|
|
#define get_cycles() (0)
|
|
|
|
|
|
/*
|
|
* Register access.
|
|
*/
|
|
|
|
#define WSR_CCOUNT(r) asm volatile ("wsr %0,"__stringify(CCOUNT) :: "a" (r))
|
|
#define RSR_CCOUNT(r) asm volatile ("rsr %0,"__stringify(CCOUNT) : "=a" (r))
|
|
#define WSR_CCOMPARE(x,r) asm volatile ("wsr %0,"__stringify(CCOMPARE)"+"__stringify(x) :: "a"(r))
|
|
#define RSR_CCOMPARE(x,r) asm volatile ("rsr %0,"__stringify(CCOMPARE)"+"__stringify(x) : "=a"(r))
|
|
|
|
static inline unsigned long get_ccount (void)
|
|
{
|
|
unsigned long ccount;
|
|
RSR_CCOUNT(ccount);
|
|
return ccount;
|
|
}
|
|
|
|
static inline void set_ccount (unsigned long ccount)
|
|
{
|
|
WSR_CCOUNT(ccount);
|
|
}
|
|
|
|
static inline unsigned long get_linux_timer (void)
|
|
{
|
|
unsigned ccompare;
|
|
RSR_CCOMPARE(LINUX_TIMER, ccompare);
|
|
return ccompare;
|
|
}
|
|
|
|
static inline void set_linux_timer (unsigned long ccompare)
|
|
{
|
|
WSR_CCOMPARE(LINUX_TIMER, ccompare);
|
|
}
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _XTENSA_TIMEX_H */
|