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#ifndef __ASM_ARM_CACHETYPE_H
#define __ASM_ARM_CACHETYPE_H
#define CACHEID_VIVT (1 << 0)
#define CACHEID_VIPT_NONALIASING (1 << 1)
#define CACHEID_VIPT_ALIASING (1 << 2)
#define CACHEID_VIPT (CACHEID_VIPT_ALIASING|CACHEID_VIPT_NONALIASING)
#define CACHEID_ASID_TAGGED (1 << 3)
#define CACHEID_VIPT_I_ALIASING (1 << 4)
#define CACHEID_PIPT (1 << 5)
extern unsigned int cacheid;
#define cache_is_vivt() cacheid_is(CACHEID_VIVT)
#define cache_is_vipt() cacheid_is(CACHEID_VIPT)
#define cache_is_vipt_nonaliasing() cacheid_is(CACHEID_VIPT_NONALIASING)
#define cache_is_vipt_aliasing() cacheid_is(CACHEID_VIPT_ALIASING)
#define icache_is_vivt_asid_tagged() cacheid_is(CACHEID_ASID_TAGGED)
#define icache_is_vipt_aliasing() cacheid_is(CACHEID_VIPT_I_ALIASING)
#define icache_is_pipt() cacheid_is(CACHEID_PIPT)
/*
* __LINUX_ARM_ARCH__ is the minimum supported CPU architecture
* Mask out support which will never be present on newer CPUs.
* - v6+ is never VIVT
* - v7+ VIPT never aliases on D-side
*/
#if __LINUX_ARM_ARCH__ >= 7
#define __CACHEID_ARCH_MIN (CACHEID_VIPT_NONALIASING |\
CACHEID_ASID_TAGGED |\
CACHEID_VIPT_I_ALIASING |\
CACHEID_PIPT)
#elif __LINUX_ARM_ARCH__ >= 6
#define __CACHEID_ARCH_MIN (~CACHEID_VIVT)
#else
#define __CACHEID_ARCH_MIN (~0)
#endif
/*
* Mask out support which isn't configured
*/
#if defined(CONFIG_CPU_CACHE_VIVT) && !defined(CONFIG_CPU_CACHE_VIPT)
#define __CACHEID_ALWAYS (CACHEID_VIVT)
#define __CACHEID_NEVER (~CACHEID_VIVT)
#elif !defined(CONFIG_CPU_CACHE_VIVT) && defined(CONFIG_CPU_CACHE_VIPT)
#define __CACHEID_ALWAYS (0)
#define __CACHEID_NEVER (CACHEID_VIVT)
#else
#define __CACHEID_ALWAYS (0)
#define __CACHEID_NEVER (0)
#endif
static inline unsigned int __attribute__((pure)) cacheid_is(unsigned int mask)
{
return (__CACHEID_ALWAYS & mask) |
(~__CACHEID_NEVER & __CACHEID_ARCH_MIN & mask & cacheid);
}
#endif
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