1 #ifndef _ALPHA_TLBFLUSH_H
2 #define _ALPHA_TLBFLUSH_H
4 #include <linux/config.h>
6 #include <asm/compiler.h>
8 #ifndef __EXTERN_INLINE
9 #define __EXTERN_INLINE extern inline
10 #define __MMU_EXTERN_INLINE
13 extern void __load_new_mm_context(struct mm_struct *);
16 /* Use a few helper functions to hide the ugly broken ASN
17 numbers on early Alphas (ev4 and ev45). */
20 ev4_flush_tlb_current(struct mm_struct *mm)
22 __load_new_mm_context(mm);
27 ev5_flush_tlb_current(struct mm_struct *mm)
29 __load_new_mm_context(mm);
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. */
37 ev4_flush_tlb_current_page(struct mm_struct * mm,
38 struct vm_area_struct *vma,
42 if (vma->vm_flags & VM_EXEC) {
43 __load_new_mm_context(mm);
50 ev5_flush_tlb_current_page(struct mm_struct * mm,
51 struct vm_area_struct *vma,
54 if (vma->vm_flags & VM_EXEC)
55 __load_new_mm_context(mm);
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
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
69 # define flush_tlb_current ev5_flush_tlb_current
70 # define flush_tlb_current_page ev5_flush_tlb_current_page
74 #ifdef __MMU_EXTERN_INLINE
75 #undef __EXTERN_INLINE
76 #undef __MMU_EXTERN_INLINE
79 /* Flush current user mapping. */
83 flush_tlb_current(current->active_mm);
86 /* Flush someone else's user mapping. */
88 flush_tlb_other(struct mm_struct *mm)
90 unsigned long *mmc = &mm->context[smp_processor_id()];
91 /* Check it's not zero first to avoid cacheline ping pong
96 /* Flush a specified range of user mapping page tables from TLB.
97 Although Alpha uses VPTE caches, this can be a nop, as Alpha does
98 not have finegrained tlb flushing, so it will flush VPTE stuff
99 during next flush_tlb_range. */
102 flush_tlb_pgtables(struct mm_struct *mm, unsigned long start,
108 /* Flush everything (kernel mapping may also have changed
109 due to vmalloc/vfree). */
110 static inline void flush_tlb_all(void)
115 /* Flush a specified user mapping. */
117 flush_tlb_mm(struct mm_struct *mm)
119 if (mm == current->active_mm)
120 flush_tlb_current(mm);
125 /* Page-granular tlb flush. */
127 flush_tlb_page(struct vm_area_struct *vma, unsigned long addr)
129 struct mm_struct *mm = vma->vm_mm;
131 if (mm == current->active_mm)
132 flush_tlb_current_page(mm, vma, addr);
137 /* Flush a specified range of user mapping. On the Alpha we flush
138 the whole user tlb. */
140 flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
143 flush_tlb_mm(vma->vm_mm);
146 #else /* CONFIG_SMP */
148 extern void flush_tlb_all(void);
149 extern void flush_tlb_mm(struct mm_struct *);
150 extern void flush_tlb_page(struct vm_area_struct *, unsigned long);
151 extern void flush_tlb_range(struct vm_area_struct *, unsigned long,
154 #endif /* CONFIG_SMP */
156 #define flush_tlb_kernel_range(start, end) flush_tlb_all()
158 #endif /* _ALPHA_TLBFLUSH_H */