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