/* * include/asm-ppc/tlbflush.h * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #ifdef __KERNEL__ #ifndef _PPC_TLBFLUSH_H #define _PPC_TLBFLUSH_H #include <linux/config.h> #include <linux/mm.h> extern void _tlbie(unsigned long address); extern void _tlbia(void); #if defined(CONFIG_4xx) #ifndef CONFIG_44x #define __tlbia() asm volatile ("sync; tlbia; isync" : : : "memory") #else #define __tlbia _tlbia #endif static inline void flush_tlb_mm(struct mm_struct *mm) { __tlbia(); } static inline void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr) { _tlbie(vmaddr); } static inline void flush_tlb_page_nohash(struct vm_area_struct *vma, unsigned long vmaddr) { _tlbie(vmaddr); } static inline void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end) { __tlbia(); } static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end) { __tlbia(); } #elif defined(CONFIG_FSL_BOOKE) /* TODO: determine if flush_tlb_range & flush_tlb_kernel_range * are best implemented as tlbia vs specific tlbie's */ #define __tlbia() _tlbia() static inline void flush_tlb_mm(struct mm_struct *mm) { __tlbia(); } static inline void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr) { _tlbie(vmaddr); } static inline void flush_tlb_page_nohash(struct vm_area_struct *vma, unsigned long vmaddr) { _tlbie(vmaddr); } static inline void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end) { __tlbia(); } static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end) { __tlbia(); } #elif defined(CONFIG_8xx) #define __tlbia() asm volatile ("tlbia; sync" : : : "memory") static inline void flush_tlb_mm(struct mm_struct *mm) { __tlbia(); } static inline void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr) { _tlbie(vmaddr); } static inline void flush_tlb_page_nohash(struct vm_area_struct *vma, unsigned long vmaddr) { _tlbie(vmaddr); } static inline void flush_tlb_range(struct mm_struct *mm, unsigned long start, unsigned long end) { __tlbia(); } static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end) { __tlbia(); } #else /* 6xx, 7xx, 7xxx cpus */ struct mm_struct; struct vm_area_struct; extern void flush_tlb_mm(struct mm_struct *mm); extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr); extern void flush_tlb_page_nohash(struct vm_area_struct *vma, unsigned long addr); extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end); extern void flush_tlb_kernel_range(unsigned long start, unsigned long end); #endif /* * This is called in munmap when we have freed up some page-table * pages. We don't need to do anything here, there's nothing special * about our page-table pages. -- paulus */ static inline void flush_tlb_pgtables(struct mm_struct *mm, unsigned long start, unsigned long end) { } /* * This gets called at the end of handling a page fault, when * the kernel has put a new PTE into the page table for the process. * We use it to ensure coherency between the i-cache and d-cache * for the page which has just been mapped in. * On machines which use an MMU hash table, we use this to put a * corresponding HPTE into the hash table ahead of time, instead of * waiting for the inevitable extra hash-table miss exception. */ extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t); #endif /* _PPC_TLBFLUSH_H */ #endif /*__KERNEL__ */