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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
| commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
| tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /arch/sparc/include/asm/delay_32.h | |
| parent | Initial commit. (diff) | |
| download | linux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip | |
Adding upstream version 4.19.249.upstream/4.19.249
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/sparc/include/asm/delay_32.h')
| -rw-r--r-- | arch/sparc/include/asm/delay_32.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/delay_32.h b/arch/sparc/include/asm/delay_32.h new file mode 100644 index 000000000..0e6dfe857 --- /dev/null +++ b/arch/sparc/include/asm/delay_32.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * delay.h: Linux delay routines on the Sparc. + * + * Copyright (C) 1994 David S. Miller (davem@caip.rutgers.edu). + */ + +#ifndef __SPARC_DELAY_H +#define __SPARC_DELAY_H + +#include <asm/cpudata.h> + +static inline void __delay(unsigned long loops) +{ + __asm__ __volatile__("cmp %0, 0\n\t" + "1: bne 1b\n\t" + "subcc %0, 1, %0\n" : + "=&r" (loops) : + "0" (loops) : + "cc"); +} + +/* This is too messy with inline asm on the Sparc. */ +void __udelay(unsigned long usecs, unsigned long lpj); +void __ndelay(unsigned long nsecs, unsigned long lpj); + +#ifdef CONFIG_SMP +#define __udelay_val cpu_data(smp_processor_id()).udelay_val +#else /* SMP */ +#define __udelay_val loops_per_jiffy +#endif /* SMP */ +#define udelay(__usecs) __udelay(__usecs, __udelay_val) +#define ndelay(__nsecs) __ndelay(__nsecs, __udelay_val) + +#endif /* defined(__SPARC_DELAY_H) */ |