diff options
Diffstat (limited to 'arch/mips/mm/tlb-r4k.c')
| -rw-r--r-- | arch/mips/mm/tlb-r4k.c | 38 |
1 files changed, 22 insertions, 16 deletions
diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c index 00b26a67a06d..da3b0b9c9eae 100644 --- a/arch/mips/mm/tlb-r4k.c +++ b/arch/mips/mm/tlb-r4k.c @@ -16,6 +16,7 @@ #include <linux/module.h> #include <asm/cpu.h> +#include <asm/cpu-type.h> #include <asm/bootinfo.h> #include <asm/mmu_context.h> #include <asm/pgtable.h> @@ -51,21 +52,26 @@ extern void build_tlb_refill_handler(void); #endif /* CONFIG_MIPS_MT_SMTC */ -#if defined(CONFIG_CPU_LOONGSON2) /* * LOONGSON2 has a 4 entry itlb which is a subset of dtlb, * unfortrunately, itlb is not totally transparent to software. */ -#define FLUSH_ITLB write_c0_diag(4); - -#define FLUSH_ITLB_VM(vma) { if ((vma)->vm_flags & VM_EXEC) write_c0_diag(4); } - -#else - -#define FLUSH_ITLB -#define FLUSH_ITLB_VM(vma) +static inline void flush_itlb(void) +{ + switch (current_cpu_type()) { + case CPU_LOONGSON2: + write_c0_diag(4); + break; + default: + break; + } +} -#endif +static inline void flush_itlb_vm(struct vm_area_struct *vma) +{ + if (vma->vm_flags & VM_EXEC) + flush_itlb(); +} void local_flush_tlb_all(void) { @@ -92,7 +98,7 @@ void local_flush_tlb_all(void) } tlbw_use_hazard(); write_c0_entryhi(old_ctx); - FLUSH_ITLB; + flush_itlb(); EXIT_CRITICAL(flags); } EXPORT_SYMBOL(local_flush_tlb_all); @@ -154,7 +160,7 @@ void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start, } else { drop_mmu_context(mm, cpu); } - FLUSH_ITLB; + flush_itlb(); EXIT_CRITICAL(flags); } } @@ -196,7 +202,7 @@ void local_flush_tlb_kernel_range(unsigned long start, unsigned long end) } else { local_flush_tlb_all(); } - FLUSH_ITLB; + flush_itlb(); EXIT_CRITICAL(flags); } @@ -229,7 +235,7 @@ void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page) finish: write_c0_entryhi(oldpid); - FLUSH_ITLB_VM(vma); + flush_itlb_vm(vma); EXIT_CRITICAL(flags); } } @@ -261,7 +267,7 @@ void local_flush_tlb_one(unsigned long page) tlbw_use_hazard(); } write_c0_entryhi(oldpid); - FLUSH_ITLB; + flush_itlb(); EXIT_CRITICAL(flags); } @@ -334,7 +340,7 @@ void __update_tlb(struct vm_area_struct * vma, unsigned long address, pte_t pte) tlb_write_indexed(); } tlbw_use_hazard(); - FLUSH_ITLB_VM(vma); + flush_itlb_vm(vma); EXIT_CRITICAL(flags); } |
