/*
* 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 - 2013 Tensilica Inc.
*/
#ifndef _XTENSA_TIMEX_H
#define _XTENSA_TIMEX_H
#include <
asm/processor.h>
#if XCHAL_NUM_TIMERS > 0 && \
XTENSA_INT_LEVEL(XCHAL_TIMER0_INTERRUPT) <= XCHAL_EXCM_LEVEL
# define LINUX_TIMER 0
# define LINUX_TIMER_INT XCHAL_TIMER0_INTERRUPT
#elif XCHAL_NUM_TIMERS > 1 && \
XTENSA_INT_LEVEL(XCHAL_TIMER1_INTERRUPT) <= XCHAL_EXCM_LEVEL
# define LINUX_TIMER 1
# define LINUX_TIMER_INT XCHAL_TIMER1_INTERRUPT
#elif XCHAL_NUM_TIMERS > 2 && \
XTENSA_INT_LEVEL(XCHAL_TIMER2_INTERRUPT) <= XCHAL_EXCM_LEVEL
# define LINUX_TIMER 2
# define LINUX_TIMER_INT XCHAL_TIMER2_INTERRUPT
#else
# error
"Bad timer number for Linux configurations!"
#endif
extern unsigned long ccount_freq;
void local_timer_setup(
unsigned cpu);
/*
* Register access.
*/
static inline unsigned long get_ccount (
void)
{
return xtensa_get_sr(ccount);
}
static inline void set_ccount (
unsigned long ccount)
{
xtensa_set_sr(ccount, ccount);
}
static inline unsigned long get_linux_timer (
void)
{
return xtensa_get_sr(SREG_CCOMPARE + LINUX_TIMER);
}
static inline void set_linux_timer (
unsigned long ccompare)
{
xtensa_set_sr(ccompare, SREG_CCOMPARE + LINUX_TIMER);
}
#include <asm-generic/timex.h>
#endif /* _XTENSA_TIMEX_H */
