Linux 2.6.31.6
[linux/fpc-iii.git] / arch / powerpc / include / asm / tlbflush.h
blobabbe3419d1dd244e57d543a58f4a25bb55502da4
1 #ifndef _ASM_POWERPC_TLBFLUSH_H
2 #define _ASM_POWERPC_TLBFLUSH_H
4 /*
5 * TLB flushing:
7 * - flush_tlb_mm(mm) flushes the specified mm context TLB's
8 * - flush_tlb_page(vma, vmaddr) flushes one page
9 * - local_flush_tlb_mm(mm) flushes the specified mm context on
10 * the local processor
11 * - local_flush_tlb_page(vma, vmaddr) flushes one page on the local processor
12 * - flush_tlb_page_nohash(vma, vmaddr) flushes one page if SW loaded TLB
13 * - flush_tlb_range(vma, start, end) flushes a range of pages
14 * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
16 * This program is free software; you can redistribute it and/or
17 * modify it under the terms of the GNU General Public License
18 * as published by the Free Software Foundation; either version
19 * 2 of the License, or (at your option) any later version.
21 #ifdef __KERNEL__
23 #ifdef CONFIG_PPC_MMU_NOHASH
25 * TLB flushing for software loaded TLB chips
27 * TODO: (CONFIG_FSL_BOOKE) determine if flush_tlb_range &
28 * flush_tlb_kernel_range are best implemented as tlbia vs
29 * specific tlbie's
32 #include <linux/mm.h>
34 #define MMU_NO_CONTEXT ((unsigned int)-1)
36 extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
37 unsigned long end);
38 extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
40 extern void local_flush_tlb_mm(struct mm_struct *mm);
41 extern void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
43 #ifdef CONFIG_SMP
44 extern void flush_tlb_mm(struct mm_struct *mm);
45 extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
46 #else
47 #define flush_tlb_mm(mm) local_flush_tlb_mm(mm)
48 #define flush_tlb_page(vma,addr) local_flush_tlb_page(vma,addr)
49 #endif
50 #define flush_tlb_page_nohash(vma,addr) flush_tlb_page(vma,addr)
52 #elif defined(CONFIG_PPC_STD_MMU_32)
55 * TLB flushing for "classic" hash-MMU 32-bit CPUs, 6xx, 7xx, 7xxx
57 extern void flush_tlb_mm(struct mm_struct *mm);
58 extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
59 extern void flush_tlb_page_nohash(struct vm_area_struct *vma, unsigned long addr);
60 extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
61 unsigned long end);
62 extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
63 static inline void local_flush_tlb_page(struct vm_area_struct *vma,
64 unsigned long vmaddr)
66 flush_tlb_page(vma, vmaddr);
68 static inline void local_flush_tlb_mm(struct mm_struct *mm)
70 flush_tlb_mm(mm);
73 #elif defined(CONFIG_PPC_STD_MMU_64)
76 * TLB flushing for 64-bit hash-MMU CPUs
79 #include <linux/percpu.h>
80 #include <asm/page.h>
82 #define PPC64_TLB_BATCH_NR 192
84 struct ppc64_tlb_batch {
85 int active;
86 unsigned long index;
87 struct mm_struct *mm;
88 real_pte_t pte[PPC64_TLB_BATCH_NR];
89 unsigned long vaddr[PPC64_TLB_BATCH_NR];
90 unsigned int psize;
91 int ssize;
93 DECLARE_PER_CPU(struct ppc64_tlb_batch, ppc64_tlb_batch);
95 extern void __flush_tlb_pending(struct ppc64_tlb_batch *batch);
97 extern void hpte_need_flush(struct mm_struct *mm, unsigned long addr,
98 pte_t *ptep, unsigned long pte, int huge);
100 #define __HAVE_ARCH_ENTER_LAZY_MMU_MODE
102 static inline void arch_enter_lazy_mmu_mode(void)
104 struct ppc64_tlb_batch *batch = &__get_cpu_var(ppc64_tlb_batch);
106 batch->active = 1;
109 static inline void arch_leave_lazy_mmu_mode(void)
111 struct ppc64_tlb_batch *batch = &__get_cpu_var(ppc64_tlb_batch);
113 if (batch->index)
114 __flush_tlb_pending(batch);
115 batch->active = 0;
118 #define arch_flush_lazy_mmu_mode() do {} while (0)
121 extern void flush_hash_page(unsigned long va, real_pte_t pte, int psize,
122 int ssize, int local);
123 extern void flush_hash_range(unsigned long number, int local);
126 static inline void local_flush_tlb_mm(struct mm_struct *mm)
130 static inline void flush_tlb_mm(struct mm_struct *mm)
134 static inline void local_flush_tlb_page(struct vm_area_struct *vma,
135 unsigned long vmaddr)
139 static inline void flush_tlb_page(struct vm_area_struct *vma,
140 unsigned long vmaddr)
144 static inline void flush_tlb_page_nohash(struct vm_area_struct *vma,
145 unsigned long vmaddr)
149 static inline void flush_tlb_range(struct vm_area_struct *vma,
150 unsigned long start, unsigned long end)
154 static inline void flush_tlb_kernel_range(unsigned long start,
155 unsigned long end)
159 /* Private function for use by PCI IO mapping code */
160 extern void __flush_hash_table_range(struct mm_struct *mm, unsigned long start,
161 unsigned long end);
163 #else
164 #error Unsupported MMU type
165 #endif
167 #endif /*__KERNEL__ */
168 #endif /* _ASM_POWERPC_TLBFLUSH_H */