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35 lines
907 B
35 lines
907 B
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* delay.h: Linux delay routines on the Sparc. |
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* |
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* Copyright (C) 1994 David S. Miller ([email protected]). |
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*/ |
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#ifndef __SPARC_DELAY_H |
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#define __SPARC_DELAY_H |
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#include <asm/cpudata.h> |
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static inline void __delay(unsigned long loops) |
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{ |
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__asm__ __volatile__("cmp %0, 0\n\t" |
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"1: bne 1b\n\t" |
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"subcc %0, 1, %0\n" : |
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"=&r" (loops) : |
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"0" (loops) : |
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"cc"); |
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} |
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/* This is too messy with inline asm on the Sparc. */ |
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void __udelay(unsigned long usecs, unsigned long lpj); |
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void __ndelay(unsigned long nsecs, unsigned long lpj); |
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#ifdef CONFIG_SMP |
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#define __udelay_val cpu_data(smp_processor_id()).udelay_val |
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#else /* SMP */ |
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#define __udelay_val loops_per_jiffy |
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#endif /* SMP */ |
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#define udelay(__usecs) __udelay(__usecs, __udelay_val) |
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#define ndelay(__nsecs) __ndelay(__nsecs, __udelay_val) |
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#endif /* defined(__SPARC_DELAY_H) */
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