delay.h

Go to the documentation of this file.

#ifndef _ASM_CRIS_ARCH_DELAY_H
#define _ASM_CRIS_ARCH_DELAY_H

extern void cris_delay10ns(u32 n10ns);
#define udelay(u) cris_delay10ns((u)*100)
#define ndelay(n) cris_delay10ns(((n)+9)/10)

/*
 * Not used anymore for udelay or ndelay.  Referenced by
 * e.g. init/calibrate.c.  All other references are likely bugs;
 * should be replaced by mdelay, udelay or ndelay.
 */

static inline void
__delay(int loops)
{
    __asm__ __volatile__ (
        "move.d %0, $r9\n\t"
        "beq 2f\n\t"
        "subq 1, $r9\n\t"
        "1:\n\t"
        "bne 1b\n\t"
        "subq 1, $r9\n"
        "2:"
        : : "g" (loops) : "r9");
}

#endif /* _ASM_CRIS_ARCH_DELAY_H */