From 2a21c7300b53b744d16903256a172d9cbcfdd03e Mon Sep 17 00:00:00 2001 From: Fuxin Zhang Date: Wed, 6 Jun 2007 14:52:43 +0800 Subject: [MIPS] define Hit_Invalidate_I to Index_Invalidate_I for loongson2 Signed-off-by: Fuxin Zhang Signed-off-by: Ralf Baechle --- arch/mips/mm/tlb-r4k.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) (limited to 'arch/mips/mm/tlb-r4k.c') diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c index 65160d4984d9..dcd6913dc1ff 100644 --- a/arch/mips/mm/tlb-r4k.c +++ b/arch/mips/mm/tlb-r4k.c @@ -48,6 +48,22 @@ 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) + +#endif + void local_flush_tlb_all(void) { unsigned long flags; @@ -73,6 +89,7 @@ void local_flush_tlb_all(void) } tlbw_use_hazard(); write_c0_entryhi(old_ctx); + FLUSH_ITLB; EXIT_CRITICAL(flags); } @@ -136,6 +153,7 @@ void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start, } else { drop_mmu_context(mm, cpu); } + FLUSH_ITLB; EXIT_CRITICAL(flags); } } @@ -178,6 +196,7 @@ void local_flush_tlb_kernel_range(unsigned long start, unsigned long end) } else { local_flush_tlb_all(); } + FLUSH_ITLB; EXIT_CRITICAL(flags); } @@ -210,6 +229,7 @@ void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page) finish: write_c0_entryhi(oldpid); + FLUSH_ITLB_VM(vma); EXIT_CRITICAL(flags); } } @@ -241,7 +261,7 @@ void local_flush_tlb_one(unsigned long page) tlbw_use_hazard(); } write_c0_entryhi(oldpid); - + FLUSH_ITLB; EXIT_CRITICAL(flags); } @@ -293,6 +313,7 @@ void __update_tlb(struct vm_area_struct * vma, unsigned long address, pte_t pte) else tlb_write_indexed(); tlbw_use_hazard(); + FLUSH_ITLB_VM(vma); EXIT_CRITICAL(flags); } -- cgit v1.2.2