| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * include/asm-ppc/tlbflush.h |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; either version |
| 7 | * 2 of the License, or (at your option) any later version. |
| 8 | */ |
| 9 | #ifdef __KERNEL__ |
| 10 | #ifndef _PPC_TLBFLUSH_H |
| 11 | #define _PPC_TLBFLUSH_H |
| 12 | |
| 13 | #include <linux/config.h> |
| 14 | #include <linux/mm.h> |
| 15 | |
| 16 | extern void _tlbie(unsigned long address); |
| 17 | extern void _tlbia(void); |
| 18 | |
| 19 | #if defined(CONFIG_4xx) |
| 20 | |
| 21 | #ifndef CONFIG_44x |
| 22 | #define __tlbia() asm volatile ("sync; tlbia; isync" : : : "memory") |
| 23 | #else |
| 24 | #define __tlbia _tlbia |
| 25 | #endif |
| 26 | |
| 27 | static inline void flush_tlb_mm(struct mm_struct *mm) |
| 28 | { __tlbia(); } |
| 29 | static inline void flush_tlb_page(struct vm_area_struct *vma, |
| 30 | unsigned long vmaddr) |
| 31 | { _tlbie(vmaddr); } |
| 32 | static inline void flush_tlb_page_nohash(struct vm_area_struct *vma, |
| 33 | unsigned long vmaddr) |
| 34 | { _tlbie(vmaddr); } |
| 35 | static inline void flush_tlb_range(struct vm_area_struct *vma, |
| 36 | unsigned long start, unsigned long end) |
| 37 | { __tlbia(); } |
| 38 | static inline void flush_tlb_kernel_range(unsigned long start, |
| 39 | unsigned long end) |
| 40 | { __tlbia(); } |
| 41 | |
| 42 | #elif defined(CONFIG_FSL_BOOKE) |
| 43 | |
| 44 | /* TODO: determine if flush_tlb_range & flush_tlb_kernel_range |
| 45 | * are best implemented as tlbia vs specific tlbie's */ |
| 46 | |
| 47 | #define __tlbia() _tlbia() |
| 48 | |
| 49 | static inline void flush_tlb_mm(struct mm_struct *mm) |
| 50 | { __tlbia(); } |
| 51 | static inline void flush_tlb_page(struct vm_area_struct *vma, |
| 52 | unsigned long vmaddr) |
| 53 | { _tlbie(vmaddr); } |
| 54 | static inline void flush_tlb_page_nohash(struct vm_area_struct *vma, |
| 55 | unsigned long vmaddr) |
| 56 | { _tlbie(vmaddr); } |
| 57 | static inline void flush_tlb_range(struct vm_area_struct *vma, |
| 58 | unsigned long start, unsigned long end) |
| 59 | { __tlbia(); } |
| 60 | static inline void flush_tlb_kernel_range(unsigned long start, |
| 61 | unsigned long end) |
| 62 | { __tlbia(); } |
| 63 | |
| 64 | #elif defined(CONFIG_8xx) |
| 65 | #define __tlbia() asm volatile ("tlbia; sync" : : : "memory") |
| 66 | |
| 67 | static inline void flush_tlb_mm(struct mm_struct *mm) |
| 68 | { __tlbia(); } |
| 69 | static inline void flush_tlb_page(struct vm_area_struct *vma, |
| 70 | unsigned long vmaddr) |
| 71 | { _tlbie(vmaddr); } |
| 72 | static inline void flush_tlb_page_nohash(struct vm_area_struct *vma, |
| 73 | unsigned long vmaddr) |
| 74 | { _tlbie(vmaddr); } |
| 75 | static inline void flush_tlb_range(struct mm_struct *mm, |
| 76 | unsigned long start, unsigned long end) |
| 77 | { __tlbia(); } |
| 78 | static inline void flush_tlb_kernel_range(unsigned long start, |
| 79 | unsigned long end) |
| 80 | { __tlbia(); } |
| 81 | |
| 82 | #else /* 6xx, 7xx, 7xxx cpus */ |
| 83 | struct mm_struct; |
| 84 | struct vm_area_struct; |
| 85 | extern void flush_tlb_mm(struct mm_struct *mm); |
| 86 | extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr); |
| 87 | extern void flush_tlb_page_nohash(struct vm_area_struct *vma, unsigned long addr); |
| 88 | extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, |
| 89 | unsigned long end); |
| 90 | extern void flush_tlb_kernel_range(unsigned long start, unsigned long end); |
| 91 | #endif |
| 92 | |
| 93 | /* |
| 94 | * This is called in munmap when we have freed up some page-table |
| 95 | * pages. We don't need to do anything here, there's nothing special |
| 96 | * about our page-table pages. -- paulus |
| 97 | */ |
| 98 | static inline void flush_tlb_pgtables(struct mm_struct *mm, |
| 99 | unsigned long start, unsigned long end) |
| 100 | { |
| 101 | } |
| 102 | |
| 103 | /* |
| 104 | * This gets called at the end of handling a page fault, when |
| 105 | * the kernel has put a new PTE into the page table for the process. |
| 106 | * We use it to ensure coherency between the i-cache and d-cache |
| 107 | * for the page which has just been mapped in. |
| 108 | * On machines which use an MMU hash table, we use this to put a |
| 109 | * corresponding HPTE into the hash table ahead of time, instead of |
| 110 | * waiting for the inevitable extra hash-table miss exception. |
| 111 | */ |
| 112 | extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t); |
| 113 | |
| 114 | #endif /* _PPC_TLBFLUSH_H */ |
| 115 | #endif /*__KERNEL__ */ |