mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 13:50:53 +07:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
31 lines
943 B
C
31 lines
943 B
C
/*
|
|
* Use prescale timer at 25000 Hz instead of the baudrate timer at
|
|
* 19200 to get rid of the 64ppm to fast timer (and we get better
|
|
* resolution within a jiffie as well.
|
|
*/
|
|
#ifndef _ASM_CRIS_ARCH_TIMEX_H
|
|
#define _ASM_CRIS_ARCH_TIMEX_H
|
|
|
|
/* The prescaler clock runs at 25MHz, we divide it by 1000 in the prescaler */
|
|
/* If you change anything here you must check time.c as well... */
|
|
#define PRESCALE_FREQ 25000000
|
|
#define PRESCALE_VALUE 1000
|
|
#define CLOCK_TICK_RATE 25000 /* Underlying frequency of the HZ timer */
|
|
/* The timer0 values gives 40us resolution (1/25000) but interrupts at HZ*/
|
|
#define TIMER0_FREQ (CLOCK_TICK_RATE)
|
|
#define TIMER0_CLKSEL flexible
|
|
#define TIMER0_DIV (TIMER0_FREQ/(HZ))
|
|
|
|
|
|
#define GET_JIFFIES_USEC() \
|
|
( (TIMER0_DIV - *R_TIMER0_DATA) * (1000000/HZ)/TIMER0_DIV )
|
|
|
|
unsigned long get_ns_in_jiffie(void);
|
|
|
|
extern inline unsigned long get_us_in_jiffie_highres(void)
|
|
{
|
|
return get_ns_in_jiffie()/1000;
|
|
}
|
|
|
|
#endif
|