/*
* 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__ */
