projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _ALPHA_TLBFLUSH_H |
| 2 | #define _ALPHA_TLBFLUSH_H | |
| 3 | ||
| 1da177e4 LT |
4 | #include <linux/mm.h> |
| 5 | #include <asm/compiler.h> | |
| 6 | ||
| 7 | #ifndef __EXTERN_INLINE | |
| 8 | #define __EXTERN_INLINE extern inline | |
| 9 | #define __MMU_EXTERN_INLINE | |
| 10 | #endif | |
| 11 | ||
| 12 | extern void __load_new_mm_context(struct mm_struct *); | |
| 13 | ||
| 14 | ||
| 15 | /* Use a few helper functions to hide the ugly broken ASN | |
| 16 | numbers on early Alphas (ev4 and ev45). */ | |
| 17 | ||
| 18 | __EXTERN_INLINE void | |
| 19 | ev4_flush_tlb_current(struct mm_struct *mm) | |
| 20 | { | |
| 21 | __load_new_mm_context(mm); | |
| 22 | tbiap(); | |
| 23 | } | |
| 24 | ||
| 25 | __EXTERN_INLINE void | |
| 26 | ev5_flush_tlb_current(struct mm_struct *mm) | |
| 27 | { | |
| 28 | __load_new_mm_context(mm); | |
| 29 | } | |
| 30 | ||
| 31 | /* Flush just one page in the current TLB set. We need to be very | |
| 32 | careful about the icache here, there is no way to invalidate a | |
| 33 | specific icache page. */ | |
| 34 | ||
| 35 | __EXTERN_INLINE void | |
| 36 | ev4_flush_tlb_current_page(struct mm_struct * mm, | |
| 37 | struct vm_area_struct *vma, | |
| 38 | unsigned long addr) | |
| 39 | { | |
| 40 | int tbi_flag = 2; | |
| 41 | if (vma->vm_flags & VM_EXEC) { | |
| 42 | __load_new_mm_context(mm); | |
| 43 | tbi_flag = 3; | |
| 44 | } | |
| 45 | tbi(tbi_flag, addr); | |
| 46 | } | |
| 47 | ||
| 48 | __EXTERN_INLINE void | |
| 49 | ev5_flush_tlb_current_page(struct mm_struct * mm, | |
| 50 | struct vm_area_struct *vma, | |
| 51 | unsigned long addr) | |
| 52 | { | |
| 53 | if (vma->vm_flags & VM_EXEC) | |
| 54 | __load_new_mm_context(mm); | |
| 55 | else | |
| 56 | tbi(2, addr); | |
| 57 | } | |
| 58 | ||
| 59 | ||
| 60 | #ifdef CONFIG_ALPHA_GENERIC | |
| 61 | # define flush_tlb_current alpha_mv.mv_flush_tlb_current | |
| 62 | # define flush_tlb_current_page alpha_mv.mv_flush_tlb_current_page | |
| 63 | #else | |
| 64 | # ifdef CONFIG_ALPHA_EV4 | |
| 65 | # define flush_tlb_current ev4_flush_tlb_current | |
| 66 | # define flush_tlb_current_page ev4_flush_tlb_current_page | |
| 67 | # else | |
| 68 | # define flush_tlb_current ev5_flush_tlb_current | |
| 69 | # define flush_tlb_current_page ev5_flush_tlb_current_page | |
| 70 | # endif | |
| 71 | #endif | |
| 72 | ||
| 73 | #ifdef __MMU_EXTERN_INLINE | |
| 74 | #undef __EXTERN_INLINE | |
| 75 | #undef __MMU_EXTERN_INLINE | |
| 76 | #endif | |
| 77 | ||
| 78 | /* Flush current user mapping. */ | |
| 79 | static inline void | |
| 80 | flush_tlb(void) | |
| 81 | { | |
| 82 | flush_tlb_current(current->active_mm); | |
| 83 | } | |
| 84 | ||
| 85 | /* Flush someone else's user mapping. */ | |
| 86 | static inline void | |
| 87 | flush_tlb_other(struct mm_struct *mm) | |
| 88 | { | |
| 89 | unsigned long *mmc = &mm->context[smp_processor_id()]; | |
| 90 | /* Check it's not zero first to avoid cacheline ping pong | |
| 91 | when possible. */ | |
| 92 | if (*mmc) *mmc = 0; | |
| 93 | } | |
| 94 | ||
| 1da177e4 LT |
95 | #ifndef CONFIG_SMP |
| 96 | /* Flush everything (kernel mapping may also have changed | |
| 97 | due to vmalloc/vfree). */ | |
| 98 | static inline void flush_tlb_all(void) | |
| 99 | { | |
| 100 | tbia(); | |
| 101 | } | |
| 102 | ||
| 103 | /* Flush a specified user mapping. */ | |
| 104 | static inline void | |
| 105 | flush_tlb_mm(struct mm_struct *mm) | |
| 106 | { | |
| 107 | if (mm == current->active_mm) | |
| 108 | flush_tlb_current(mm); | |
| 109 | else | |
| 110 | flush_tlb_other(mm); | |
| 111 | } | |
| 112 | ||
| 113 | /* Page-granular tlb flush. */ | |
| 114 | static inline void | |
| 115 | flush_tlb_page(struct vm_area_struct *vma, unsigned long addr) | |
| 116 | { | |
| 117 | struct mm_struct *mm = vma->vm_mm; | |
| 118 | ||
| 119 | if (mm == current->active_mm) | |
| 120 | flush_tlb_current_page(mm, vma, addr); | |
| 121 | else | |
| 122 | flush_tlb_other(mm); | |
| 123 | } | |
| 124 | ||
| 125 | /* Flush a specified range of user mapping. On the Alpha we flush | |
| 126 | the whole user tlb. */ | |
| 127 | static inline void | |
| 128 | flush_tlb_range(struct vm_area_struct *vma, unsigned long start, | |
| 129 | unsigned long end) | |
| 130 | { | |
| 131 | flush_tlb_mm(vma->vm_mm); | |
| 132 | } | |
| 133 | ||
| 134 | #else /* CONFIG_SMP */ | |
| 135 | ||
| 136 | extern void flush_tlb_all(void); | |
| 137 | extern void flush_tlb_mm(struct mm_struct *); | |
| 138 | extern void flush_tlb_page(struct vm_area_struct *, unsigned long); | |
| 139 | extern void flush_tlb_range(struct vm_area_struct *, unsigned long, | |
| 140 | unsigned long); | |
| 141 | ||
| 142 | #endif /* CONFIG_SMP */ | |
| 143 | ||
| 144 | #define flush_tlb_kernel_range(start, end) flush_tlb_all() | |
| 145 | ||
| 146 | #endif /* _ALPHA_TLBFLUSH_H */ |