diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/asm/cacheflush.h | 90 | ||||
| -rw-r--r-- | arch/arm/include/asm/cachetype.h | 96 | ||||
| -rw-r--r-- | arch/arm/include/asm/mmu_context.h | 1 | ||||
| -rw-r--r-- | arch/arm/kernel/setup.c | 1 | ||||
| -rw-r--r-- | arch/arm/mm/copypage-v6.c | 1 | ||||
| -rw-r--r-- | arch/arm/mm/fault-armv.c | 1 | ||||
| -rw-r--r-- | arch/arm/mm/flush.c | 1 |
7 files changed, 101 insertions, 90 deletions
diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h index 9073d9c6567..de6c59f814a 100644 --- a/arch/arm/include/asm/cacheflush.h +++ b/arch/arm/include/asm/cacheflush.h @@ -444,94 +444,4 @@ static inline void flush_ioremap_region(unsigned long phys, void __iomem *virt, dmac_inv_range(start, start + size); } -#define __cacheid_present(val) (val != read_cpuid(CPUID_ID)) -#define __cacheid_type_v7(val) ((val & (7 << 29)) == (4 << 29)) - -#define __cacheid_vivt_prev7(val) ((val & (15 << 25)) != (14 << 25)) -#define __cacheid_vipt_prev7(val) ((val & (15 << 25)) == (14 << 25)) -#define __cacheid_vipt_nonaliasing_prev7(val) ((val & (15 << 25 | 1 << 23)) == (14 << 25)) -#define __cacheid_vipt_aliasing_prev7(val) ((val & (15 << 25 | 1 << 23)) == (14 << 25 | 1 << 23)) - -#define __cacheid_vivt(val) (__cacheid_type_v7(val) ? 0 : __cacheid_vivt_prev7(val)) -#define __cacheid_vipt(val) (__cacheid_type_v7(val) ? 1 : __cacheid_vipt_prev7(val)) -#define __cacheid_vipt_nonaliasing(val) (__cacheid_type_v7(val) ? 1 : __cacheid_vipt_nonaliasing_prev7(val)) -#define __cacheid_vipt_aliasing(val) (__cacheid_type_v7(val) ? 0 : __cacheid_vipt_aliasing_prev7(val)) -#define __cacheid_vivt_asid_tagged_instr(val) (__cacheid_type_v7(val) ? ((val & (3 << 14)) == (1 << 14)) : 0) - -#if defined(CONFIG_CPU_CACHE_VIVT) && !defined(CONFIG_CPU_CACHE_VIPT) -/* - * VIVT caches only - */ -#define cache_is_vivt() 1 -#define cache_is_vipt() 0 -#define cache_is_vipt_nonaliasing() 0 -#define cache_is_vipt_aliasing() 0 -#define icache_is_vivt_asid_tagged() 0 - -#elif !defined(CONFIG_CPU_CACHE_VIVT) && defined(CONFIG_CPU_CACHE_VIPT) -/* - * VIPT caches only - */ -#define cache_is_vivt() 0 -#define cache_is_vipt() 1 -#define cache_is_vipt_nonaliasing() \ - ({ \ - unsigned int __val = read_cpuid(CPUID_CACHETYPE); \ - __cacheid_vipt_nonaliasing(__val); \ - }) - -#define cache_is_vipt_aliasing() \ - ({ \ - unsigned int __val = read_cpuid(CPUID_CACHETYPE); \ - __cacheid_vipt_aliasing(__val); \ - }) - -#define icache_is_vivt_asid_tagged() \ - ({ \ - unsigned int __val = read_cpuid(CPUID_CACHETYPE); \ - __cacheid_vivt_asid_tagged_instr(__val); \ - }) - -#else -/* - * VIVT or VIPT caches. Note that this is unreliable since ARM926 - * and V6 CPUs satisfy the "(val & (15 << 25)) == (14 << 25)" test. - * There's no way to tell from the CacheType register what type (!) - * the cache is. - */ -#define cache_is_vivt() \ - ({ \ - unsigned int __val = read_cpuid(CPUID_CACHETYPE); \ - (!__cacheid_present(__val)) || __cacheid_vivt(__val); \ - }) - -#define cache_is_vipt() \ - ({ \ - unsigned int __val = read_cpuid(CPUID_CACHETYPE); \ - __cacheid_present(__val) && __cacheid_vipt(__val); \ - }) - -#define cache_is_vipt_nonaliasing() \ - ({ \ - unsigned int __val = read_cpuid(CPUID_CACHETYPE); \ - __cacheid_present(__val) && \ - __cacheid_vipt_nonaliasing(__val); \ - }) - -#define cache_is_vipt_aliasing() \ - ({ \ - unsigned int __val = read_cpuid(CPUID_CACHETYPE); \ - __cacheid_present(__val) && \ - __cacheid_vipt_aliasing(__val); \ - }) - -#define icache_is_vivt_asid_tagged() \ - ({ \ - unsigned int __val = read_cpuid(CPUID_CACHETYPE); \ - __cacheid_present(__val) && \ - __cacheid_vivt_asid_tagged_instr(__val); \ - }) - -#endif - #endif diff --git a/arch/arm/include/asm/cachetype.h b/arch/arm/include/asm/cachetype.h new file mode 100644 index 00000000000..b52386bfd50 --- /dev/null +++ b/arch/arm/include/asm/cachetype.h @@ -0,0 +1,96 @@ +#ifndef __ASM_ARM_CACHETYPE_H +#define __ASM_ARM_CACHETYPE_H + +#include <asm/cputype.h> + +#define __cacheid_present(val) (val != read_cpuid_id()) +#define __cacheid_type_v7(val) ((val & (7 << 29)) == (4 << 29)) + +#define __cacheid_vivt_prev7(val) ((val & (15 << 25)) != (14 << 25)) +#define __cacheid_vipt_prev7(val) ((val & (15 << 25)) == (14 << 25)) +#define __cacheid_vipt_nonaliasing_prev7(val) ((val & (15 << 25 | 1 << 23)) == (14 << 25)) +#define __cacheid_vipt_aliasing_prev7(val) ((val & (15 << 25 | 1 << 23)) == (14 << 25 | 1 << 23)) + +#define __cacheid_vivt(val) (__cacheid_type_v7(val) ? 0 : __cacheid_vivt_prev7(val)) +#define __cacheid_vipt(val) (__cacheid_type_v7(val) ? 1 : __cacheid_vipt_prev7(val)) +#define __cacheid_vipt_nonaliasing(val) (__cacheid_type_v7(val) ? 1 : __cacheid_vipt_nonaliasing_prev7(val)) +#define __cacheid_vipt_aliasing(val) (__cacheid_type_v7(val) ? 0 : __cacheid_vipt_aliasing_prev7(val)) +#define __cacheid_vivt_asid_tagged_instr(val) (__cacheid_type_v7(val) ? ((val & (3 << 14)) == (1 << 14)) : 0) + +#if defined(CONFIG_CPU_CACHE_VIVT) && !defined(CONFIG_CPU_CACHE_VIPT) +/* + * VIVT caches only + */ +#define cache_is_vivt() 1 +#define cache_is_vipt() 0 +#define cache_is_vipt_nonaliasing() 0 +#define cache_is_vipt_aliasing() 0 +#define icache_is_vivt_asid_tagged() 0 + +#elif !defined(CONFIG_CPU_CACHE_VIVT) && defined(CONFIG_CPU_CACHE_VIPT) +/* + * VIPT caches only + */ +#define cache_is_vivt() 0 +#define cache_is_vipt() 1 +#define cache_is_vipt_nonaliasing() \ + ({ \ + unsigned int __val = read_cpuid_cachetype(); \ + __cacheid_vipt_nonaliasing(__val); \ + }) + +#define cache_is_vipt_aliasing() \ + ({ \ + unsigned int __val = read_cpuid_cachetype(); \ + __cacheid_vipt_aliasing(__val); \ + }) + +#define icache_is_vivt_asid_tagged() \ + ({ \ + unsigned int __val = read_cpuid_cachetype(); \ + __cacheid_vivt_asid_tagged_instr(__val); \ + }) + +#else +/* + * VIVT or VIPT caches. Note that this is unreliable since ARM926 + * and V6 CPUs satisfy the "(val & (15 << 25)) == (14 << 25)" test. + * There's no way to tell from the CacheType register what type (!) + * the cache is. + */ +#define cache_is_vivt() \ + ({ \ + unsigned int __val = read_cpuid_cachetype(); \ + (!__cacheid_present(__val)) || __cacheid_vivt(__val); \ + }) + +#define cache_is_vipt() \ + ({ \ + unsigned int __val = read_cpuid_cachetype(); \ + __cacheid_present(__val) && __cacheid_vipt(__val); \ + }) + +#define cache_is_vipt_nonaliasing() \ + ({ \ + unsigned int __val = read_cpuid_cachetype(); \ + __cacheid_present(__val) && \ + __cacheid_vipt_nonaliasing(__val); \ + }) + +#define cache_is_vipt_aliasing() \ + ({ \ + unsigned int __val = read_cpuid_cachetype(); \ + __cacheid_present(__val) && \ + __cacheid_vipt_aliasing(__val); \ + }) + +#define icache_is_vivt_asid_tagged() \ + ({ \ + unsigned int __val = read_cpuid_cachetype(); \ + __cacheid_present(__val) && \ + __cacheid_vivt_asid_tagged_instr(__val); \ + }) + +#endif + +#endif diff --git a/arch/arm/include/asm/mmu_context.h b/arch/arm/include/asm/mmu_context.h index a301e446007..0559f37c2a2 100644 --- a/arch/arm/include/asm/mmu_context.h +++ b/arch/arm/include/asm/mmu_context.h @@ -15,6 +15,7 @@ #include <linux/compiler.h> #include <asm/cacheflush.h> +#include <asm/cachetype.h> #include <asm/proc-fns.h> #include <asm-generic/mm_hooks.h> diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index fb04703f2a8..e90422d374a 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -32,6 +32,7 @@ #include <asm/setup.h> #include <asm/mach-types.h> #include <asm/cacheflush.h> +#include <asm/cachetype.h> #include <asm/tlbflush.h> #include <asm/mach/arch.h> diff --git a/arch/arm/mm/copypage-v6.c b/arch/arm/mm/copypage-v6.c index 3adb79257f4..0e21c076758 100644 --- a/arch/arm/mm/copypage-v6.c +++ b/arch/arm/mm/copypage-v6.c @@ -16,6 +16,7 @@ #include <asm/shmparam.h> #include <asm/tlbflush.h> #include <asm/cacheflush.h> +#include <asm/cachetype.h> #include "mm.h" diff --git a/arch/arm/mm/fault-armv.c b/arch/arm/mm/fault-armv.c index a8ec97b4752..dbdb7b72f2c 100644 --- a/arch/arm/mm/fault-armv.c +++ b/arch/arm/mm/fault-armv.c @@ -18,6 +18,7 @@ #include <linux/pagemap.h> #include <asm/cacheflush.h> +#include <asm/cachetype.h> #include <asm/pgtable.h> #include <asm/tlbflush.h> diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c index 029ee65fda2..0fa9bf388f0 100644 --- a/arch/arm/mm/flush.c +++ b/arch/arm/mm/flush.c @@ -12,6 +12,7 @@ #include <linux/pagemap.h> #include <asm/cacheflush.h> +#include <asm/cachetype.h> #include <asm/system.h> #include <asm/tlbflush.h> |