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1 #ifndef _ASM_POWERPC_PGALLOC_H
2 #define _ASM_POWERPC_PGALLOC_H
3 #ifdef __KERNEL__
4 
5 #include <linux/mm.h>
6 
7 #ifdef CONFIG_PPC_BOOK3E
8 extern void tlb_flush_pgtable(struct mmu_gather *tlb, unsigned long address);
9 #else /* CONFIG_PPC_BOOK3E */
tlb_flush_pgtable(struct mmu_gather * tlb,unsigned long address)10 static inline void tlb_flush_pgtable(struct mmu_gather *tlb,
11 				     unsigned long address)
12 {
13 }
14 #endif /* !CONFIG_PPC_BOOK3E */
15 
pte_free_kernel(struct mm_struct * mm,pte_t * pte)16 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
17 {
18 	free_page((unsigned long)pte);
19 }
20 
pte_free(struct mm_struct * mm,pgtable_t ptepage)21 static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
22 {
23 	pgtable_page_dtor(ptepage);
24 	__free_page(ptepage);
25 }
26 
27 #ifdef CONFIG_PPC64
28 #include <asm/pgalloc-64.h>
29 #else
30 #include <asm/pgalloc-32.h>
31 #endif
32 
33 #ifdef CONFIG_SMP
34 struct mmu_gather;
35 extern void tlb_remove_table(struct mmu_gather *, void *);
36 
pgtable_free_tlb(struct mmu_gather * tlb,void * table,int shift)37 static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift)
38 {
39 	unsigned long pgf = (unsigned long)table;
40 	BUG_ON(shift > MAX_PGTABLE_INDEX_SIZE);
41 	pgf |= shift;
42 	tlb_remove_table(tlb, (void *)pgf);
43 }
44 
__tlb_remove_table(void * _table)45 static inline void __tlb_remove_table(void *_table)
46 {
47 	void *table = (void *)((unsigned long)_table & ~MAX_PGTABLE_INDEX_SIZE);
48 	unsigned shift = (unsigned long)_table & MAX_PGTABLE_INDEX_SIZE;
49 
50 	pgtable_free(table, shift);
51 }
52 #else /* CONFIG_SMP */
pgtable_free_tlb(struct mmu_gather * tlb,void * table,unsigned shift)53 static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, unsigned shift)
54 {
55 	pgtable_free(table, shift);
56 }
57 #endif /* !CONFIG_SMP */
58 
__pte_free_tlb(struct mmu_gather * tlb,struct page * ptepage,unsigned long address)59 static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *ptepage,
60 				  unsigned long address)
61 {
62 	tlb_flush_pgtable(tlb, address);
63 	pgtable_page_dtor(ptepage);
64 	pgtable_free_tlb(tlb, page_address(ptepage), 0);
65 }
66 
67 #endif /* __KERNEL__ */
68 #endif /* _ASM_POWERPC_PGALLOC_H */
69