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1 #ifndef _PPC64_TLBFLUSH_H
2 #define _PPC64_TLBFLUSH_H
3
4 /*
5  * TLB flushing:
6  *
7  *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
8  *  - flush_tlb_page(vma, vmaddr) flushes one page
9  *  - flush_tlb_page_nohash(vma, vmaddr) flushes one page if SW loaded TLB
10  *  - flush_tlb_range(vma, start, end) flushes a range of pages
11  *  - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
12  *  - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
13  */
14
15 #include <linux/percpu.h>
16 #include <asm/page.h>
17
18 #define PPC64_TLB_BATCH_NR 192
19
20 struct mm_struct;
21 struct ppc64_tlb_batch {
22         unsigned long index;
23         struct mm_struct *mm;
24         pte_t pte[PPC64_TLB_BATCH_NR];
25         unsigned long vaddr[PPC64_TLB_BATCH_NR];
26 };
27 DECLARE_PER_CPU(struct ppc64_tlb_batch, ppc64_tlb_batch);
28
29 extern void __flush_tlb_pending(struct ppc64_tlb_batch *batch);
30
31 static inline void flush_tlb_pending(void)
32 {
33         struct ppc64_tlb_batch *batch = &get_cpu_var(ppc64_tlb_batch);
34
35         if (batch->index)
36                 __flush_tlb_pending(batch);
37         put_cpu_var(ppc64_tlb_batch);
38 }
39
40 #define flush_tlb_mm(mm)                        flush_tlb_pending()
41 #define flush_tlb_page(vma, addr)               flush_tlb_pending()
42 #define flush_tlb_page_nohash(vma, addr)        do { } while (0)
43 #define flush_tlb_range(vma, start, end) \
44                 do { (void)(start); flush_tlb_pending(); } while (0)
45 #define flush_tlb_kernel_range(start, end)      flush_tlb_pending()
46 #define flush_tlb_pgtables(mm, start, end)      do { } while (0)
47
48 extern void flush_hash_page(unsigned long va, pte_t pte, int local);
49 void flush_hash_range(unsigned long number, int local);
50
51 #endif /* _PPC64_TLBFLUSH_H */