Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _ALPHA_TLBFLUSH_H |
| 2 | #define _ALPHA_TLBFLUSH_H |
| 3 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | #include <linux/mm.h> |
| 5 | #include <asm/compiler.h> |
Thomas Gleixner | c18d125 | 2008-01-30 23:27:58 +0100 | [diff] [blame] | 6 | #include <asm/pgalloc.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | |
| 8 | #ifndef __EXTERN_INLINE |
| 9 | #define __EXTERN_INLINE extern inline |
| 10 | #define __MMU_EXTERN_INLINE |
| 11 | #endif |
| 12 | |
| 13 | extern void __load_new_mm_context(struct mm_struct *); |
| 14 | |
| 15 | |
| 16 | /* Use a few helper functions to hide the ugly broken ASN |
| 17 | numbers on early Alphas (ev4 and ev45). */ |
| 18 | |
| 19 | __EXTERN_INLINE void |
| 20 | ev4_flush_tlb_current(struct mm_struct *mm) |
| 21 | { |
| 22 | __load_new_mm_context(mm); |
| 23 | tbiap(); |
| 24 | } |
| 25 | |
| 26 | __EXTERN_INLINE void |
| 27 | ev5_flush_tlb_current(struct mm_struct *mm) |
| 28 | { |
| 29 | __load_new_mm_context(mm); |
| 30 | } |
| 31 | |
| 32 | /* Flush just one page in the current TLB set. We need to be very |
| 33 | careful about the icache here, there is no way to invalidate a |
| 34 | specific icache page. */ |
| 35 | |
| 36 | __EXTERN_INLINE void |
| 37 | ev4_flush_tlb_current_page(struct mm_struct * mm, |
| 38 | struct vm_area_struct *vma, |
| 39 | unsigned long addr) |
| 40 | { |
| 41 | int tbi_flag = 2; |
| 42 | if (vma->vm_flags & VM_EXEC) { |
| 43 | __load_new_mm_context(mm); |
| 44 | tbi_flag = 3; |
| 45 | } |
| 46 | tbi(tbi_flag, addr); |
| 47 | } |
| 48 | |
| 49 | __EXTERN_INLINE void |
| 50 | ev5_flush_tlb_current_page(struct mm_struct * mm, |
| 51 | struct vm_area_struct *vma, |
| 52 | unsigned long addr) |
| 53 | { |
| 54 | if (vma->vm_flags & VM_EXEC) |
| 55 | __load_new_mm_context(mm); |
| 56 | else |
| 57 | tbi(2, addr); |
| 58 | } |
| 59 | |
| 60 | |
| 61 | #ifdef CONFIG_ALPHA_GENERIC |
| 62 | # define flush_tlb_current alpha_mv.mv_flush_tlb_current |
| 63 | # define flush_tlb_current_page alpha_mv.mv_flush_tlb_current_page |
| 64 | #else |
| 65 | # ifdef CONFIG_ALPHA_EV4 |
| 66 | # define flush_tlb_current ev4_flush_tlb_current |
| 67 | # define flush_tlb_current_page ev4_flush_tlb_current_page |
| 68 | # else |
| 69 | # define flush_tlb_current ev5_flush_tlb_current |
| 70 | # define flush_tlb_current_page ev5_flush_tlb_current_page |
| 71 | # endif |
| 72 | #endif |
| 73 | |
| 74 | #ifdef __MMU_EXTERN_INLINE |
| 75 | #undef __EXTERN_INLINE |
| 76 | #undef __MMU_EXTERN_INLINE |
| 77 | #endif |
| 78 | |
| 79 | /* Flush current user mapping. */ |
| 80 | static inline void |
| 81 | flush_tlb(void) |
| 82 | { |
| 83 | flush_tlb_current(current->active_mm); |
| 84 | } |
| 85 | |
| 86 | /* Flush someone else's user mapping. */ |
| 87 | static inline void |
| 88 | flush_tlb_other(struct mm_struct *mm) |
| 89 | { |
| 90 | unsigned long *mmc = &mm->context[smp_processor_id()]; |
| 91 | /* Check it's not zero first to avoid cacheline ping pong |
| 92 | when possible. */ |
| 93 | if (*mmc) *mmc = 0; |
| 94 | } |
| 95 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | #ifndef CONFIG_SMP |
| 97 | /* Flush everything (kernel mapping may also have changed |
| 98 | due to vmalloc/vfree). */ |
| 99 | static inline void flush_tlb_all(void) |
| 100 | { |
| 101 | tbia(); |
| 102 | } |
| 103 | |
| 104 | /* Flush a specified user mapping. */ |
| 105 | static inline void |
| 106 | flush_tlb_mm(struct mm_struct *mm) |
| 107 | { |
| 108 | if (mm == current->active_mm) |
| 109 | flush_tlb_current(mm); |
| 110 | else |
| 111 | flush_tlb_other(mm); |
| 112 | } |
| 113 | |
| 114 | /* Page-granular tlb flush. */ |
| 115 | static inline void |
| 116 | flush_tlb_page(struct vm_area_struct *vma, unsigned long addr) |
| 117 | { |
| 118 | struct mm_struct *mm = vma->vm_mm; |
| 119 | |
| 120 | if (mm == current->active_mm) |
| 121 | flush_tlb_current_page(mm, vma, addr); |
| 122 | else |
| 123 | flush_tlb_other(mm); |
| 124 | } |
| 125 | |
| 126 | /* Flush a specified range of user mapping. On the Alpha we flush |
| 127 | the whole user tlb. */ |
| 128 | static inline void |
| 129 | flush_tlb_range(struct vm_area_struct *vma, unsigned long start, |
| 130 | unsigned long end) |
| 131 | { |
| 132 | flush_tlb_mm(vma->vm_mm); |
| 133 | } |
| 134 | |
| 135 | #else /* CONFIG_SMP */ |
| 136 | |
| 137 | extern void flush_tlb_all(void); |
| 138 | extern void flush_tlb_mm(struct mm_struct *); |
| 139 | extern void flush_tlb_page(struct vm_area_struct *, unsigned long); |
| 140 | extern void flush_tlb_range(struct vm_area_struct *, unsigned long, |
| 141 | unsigned long); |
| 142 | |
| 143 | #endif /* CONFIG_SMP */ |
| 144 | |
| 145 | #define flush_tlb_kernel_range(start, end) flush_tlb_all() |
| 146 | |
| 147 | #endif /* _ALPHA_TLBFLUSH_H */ |