47 lines
862 B
C
47 lines
862 B
C
/*
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* ARM specific SMP header, this contains our implementation
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* details.
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*/
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#ifndef __ASMARM_SMP_PLAT_H
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#define __ASMARM_SMP_PLAT_H
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#include <asm/cputype.h>
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/*
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* Return true if we are running on a SMP platform
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*/
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static inline bool is_smp(void)
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{
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#ifndef CONFIG_SMP
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return false;
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#elif defined(CONFIG_SMP_ON_UP)
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extern unsigned int smp_on_up;
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return !!smp_on_up;
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#else
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return true;
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#endif
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}
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/* all SMP configurations have the extended CPUID registers */
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static inline int tlb_ops_need_broadcast(void)
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{
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if (!is_smp())
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return 0;
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return ((read_cpuid_ext(CPUID_EXT_MMFR3) >> 12) & 0xf) < 2;
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}
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#if !defined(CONFIG_SMP) || __LINUX_ARM_ARCH__ >= 7
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#define cache_ops_need_broadcast() 0
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#else
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static inline int cache_ops_need_broadcast(void)
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{
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if (!is_smp())
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return 0;
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return ((read_cpuid_ext(CPUID_EXT_MMFR3) >> 12) & 0xf) < 1;
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}
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#endif
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#endif
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