diff options
Diffstat (limited to 'arch/sh/mm/fault.c')
| -rw-r--r-- | arch/sh/mm/fault.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/sh/mm/fault.c b/arch/sh/mm/fault.c index 428bec21c..9dd6ae451 100644 --- a/arch/sh/mm/fault.c +++ b/arch/sh/mm/fault.c @@ -29,6 +29,9 @@ extern void die(const char *,struct pt_regs *,long); static void __flush_tlb_page(struct mm_struct *mm, unsigned long page); +#if defined(__SH4__) +static void __flush_tlb_phys(struct mm_struct *mm, unsigned long phys); +#endif /* * Ugly, ugly, but the goto's result in better assembly.. @@ -277,6 +280,19 @@ void update_mmu_cache(struct vm_area_struct * vma, save_and_cli(flags); +#if defined(__SH4__) + if ((vma->vm_flags & VM_SHARED)) { + pteval = pte_val(pte); + pteval &= PAGE_MASK; /* Physicall page address */ + + __flush_tlb_phys(vma->vm_mm, pteval); + + /* It would be good we had routine which takes + physical memory as argument */ + flush_cache_page(vma, address&PAGE_MASK); + } +#endif + /* Set PTEH register */ if (vma) { pteaddr = (address & MMU_VPN_MASK) | @@ -328,6 +344,33 @@ static void __flush_tlb_page(struct mm_struct *mm, unsigned long page) set_asid(saved_asid); } +#if defined(__SH4__) +static void __flush_tlb_phys(struct mm_struct *mm, unsigned long phys) +{ + int i; + unsigned long addr, data; + + jump_to_P2(); + for (i = 0; i < MMU_UTLB_ENTRIES; i++) { + addr = MMU_UTLB_DATA_ARRAY | (i<<MMU_U_ENTRY_SHIFT); + data = ctrl_inl(addr); + if ((data & MMU_UTLB_VALID) && (data&PAGE_MASK) == phys) { + data &= ~MMU_UTLB_VALID; + ctrl_outl(data, addr); + } + } + for (i = 0; i < MMU_ITLB_ENTRIES; i++) { + addr = MMU_ITLB_DATA_ARRAY | (i<<MMU_I_ENTRY_SHIFT); + data = ctrl_inl(addr); + if ((data & MMU_ITLB_VALID) && (data&PAGE_MASK) == phys) { + data &= ~MMU_ITLB_VALID; + ctrl_outl(data, addr); + } + } + back_to_P1(); +} +#endif + void flush_tlb_page(struct vm_area_struct *vma, unsigned long page) { unsigned long flags; |