Paul Mackerras | 047ea78 | 2005-11-19 20:17:32 +1100 | [diff] [blame] | 1 | #ifndef _ASM_POWERPC_PGALLOC_H |
| 2 | #define _ASM_POWERPC_PGALLOC_H |
| 3 | |
| 4 | #ifndef CONFIG_PPC64 |
| 5 | #include <asm-ppc/pgalloc.h> |
| 6 | #else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | |
| 8 | #include <linux/mm.h> |
| 9 | #include <linux/slab.h> |
| 10 | #include <linux/cpumask.h> |
| 11 | #include <linux/percpu.h> |
| 12 | |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 13 | extern kmem_cache_t *pgtable_cache[]; |
| 14 | |
Benjamin Herrenschmidt | 3c726f8 | 2005-11-07 11:06:55 +1100 | [diff] [blame] | 15 | #ifdef CONFIG_PPC_64K_PAGES |
| 16 | #define PTE_CACHE_NUM 0 |
Benjamin Herrenschmidt | 87655ff | 2005-11-10 14:53:16 +1100 | [diff] [blame] | 17 | #define PMD_CACHE_NUM 1 |
| 18 | #define PGD_CACHE_NUM 2 |
Benjamin Herrenschmidt | 3c726f8 | 2005-11-07 11:06:55 +1100 | [diff] [blame] | 19 | #else |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 20 | #define PTE_CACHE_NUM 0 |
| 21 | #define PMD_CACHE_NUM 1 |
| 22 | #define PUD_CACHE_NUM 1 |
| 23 | #define PGD_CACHE_NUM 0 |
Benjamin Herrenschmidt | 3c726f8 | 2005-11-07 11:06:55 +1100 | [diff] [blame] | 24 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | |
| 26 | /* |
| 27 | * This program is free software; you can redistribute it and/or |
| 28 | * modify it under the terms of the GNU General Public License |
| 29 | * as published by the Free Software Foundation; either version |
| 30 | * 2 of the License, or (at your option) any later version. |
| 31 | */ |
| 32 | |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 33 | static inline pgd_t *pgd_alloc(struct mm_struct *mm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | { |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 35 | return kmem_cache_alloc(pgtable_cache[PGD_CACHE_NUM], GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | } |
| 37 | |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 38 | static inline void pgd_free(pgd_t *pgd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | { |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 40 | kmem_cache_free(pgtable_cache[PGD_CACHE_NUM], pgd); |
| 41 | } |
| 42 | |
Benjamin Herrenschmidt | 3c726f8 | 2005-11-07 11:06:55 +1100 | [diff] [blame] | 43 | #ifndef CONFIG_PPC_64K_PAGES |
| 44 | |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 45 | #define pgd_populate(MM, PGD, PUD) pgd_set(PGD, PUD) |
| 46 | |
| 47 | static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) |
| 48 | { |
| 49 | return kmem_cache_alloc(pgtable_cache[PUD_CACHE_NUM], |
| 50 | GFP_KERNEL|__GFP_REPEAT); |
| 51 | } |
| 52 | |
| 53 | static inline void pud_free(pud_t *pud) |
| 54 | { |
| 55 | kmem_cache_free(pgtable_cache[PUD_CACHE_NUM], pud); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | } |
| 57 | |
Benjamin Herrenschmidt | 3c726f8 | 2005-11-07 11:06:55 +1100 | [diff] [blame] | 58 | static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) |
| 59 | { |
| 60 | pud_set(pud, (unsigned long)pmd); |
| 61 | } |
| 62 | |
| 63 | #define pmd_populate(mm, pmd, pte_page) \ |
| 64 | pmd_populate_kernel(mm, pmd, page_address(pte_page)) |
| 65 | #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, (unsigned long)(pte)) |
| 66 | |
| 67 | |
| 68 | #else /* CONFIG_PPC_64K_PAGES */ |
| 69 | |
| 70 | #define pud_populate(mm, pud, pmd) pud_set(pud, (unsigned long)pmd) |
| 71 | |
| 72 | static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, |
| 73 | pte_t *pte) |
| 74 | { |
| 75 | pmd_set(pmd, (unsigned long)pte); |
| 76 | } |
| 77 | |
| 78 | #define pmd_populate(mm, pmd, pte_page) \ |
| 79 | pmd_populate_kernel(mm, pmd, page_address(pte_page)) |
| 80 | |
| 81 | #endif /* CONFIG_PPC_64K_PAGES */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 83 | static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | { |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 85 | return kmem_cache_alloc(pgtable_cache[PMD_CACHE_NUM], |
| 86 | GFP_KERNEL|__GFP_REPEAT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | } |
| 88 | |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 89 | static inline void pmd_free(pmd_t *pmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | { |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 91 | kmem_cache_free(pgtable_cache[PMD_CACHE_NUM], pmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | } |
| 93 | |
Benjamin Herrenschmidt | 3c726f8 | 2005-11-07 11:06:55 +1100 | [diff] [blame] | 94 | static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, |
| 95 | unsigned long address) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | { |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 97 | return kmem_cache_alloc(pgtable_cache[PTE_CACHE_NUM], |
| 98 | GFP_KERNEL|__GFP_REPEAT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | } |
| 100 | |
Benjamin Herrenschmidt | 3c726f8 | 2005-11-07 11:06:55 +1100 | [diff] [blame] | 101 | static inline struct page *pte_alloc_one(struct mm_struct *mm, |
| 102 | unsigned long address) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | { |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 104 | return virt_to_page(pte_alloc_one_kernel(mm, address)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | } |
| 106 | |
| 107 | static inline void pte_free_kernel(pte_t *pte) |
| 108 | { |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 109 | kmem_cache_free(pgtable_cache[PTE_CACHE_NUM], pte); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | } |
| 111 | |
| 112 | static inline void pte_free(struct page *ptepage) |
| 113 | { |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 114 | pte_free_kernel(page_address(ptepage)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | } |
| 116 | |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 117 | #define PGF_CACHENUM_MASK 0xf |
| 118 | |
| 119 | typedef struct pgtable_free { |
| 120 | unsigned long val; |
| 121 | } pgtable_free_t; |
| 122 | |
| 123 | static inline pgtable_free_t pgtable_free_cache(void *p, int cachenum, |
| 124 | unsigned long mask) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | { |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 126 | BUG_ON(cachenum > PGF_CACHENUM_MASK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 128 | return (pgtable_free_t){.val = ((unsigned long) p & ~mask) | cachenum}; |
| 129 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 131 | static inline void pgtable_free(pgtable_free_t pgf) |
| 132 | { |
| 133 | void *p = (void *)(pgf.val & ~PGF_CACHENUM_MASK); |
| 134 | int cachenum = pgf.val & PGF_CACHENUM_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 136 | kmem_cache_free(pgtable_cache[cachenum], p); |
| 137 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | |
Benjamin Herrenschmidt | 3c726f8 | 2005-11-07 11:06:55 +1100 | [diff] [blame] | 139 | extern void pgtable_free_tlb(struct mmu_gather *tlb, pgtable_free_t pgf); |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 140 | |
| 141 | #define __pte_free_tlb(tlb, ptepage) \ |
| 142 | pgtable_free_tlb(tlb, pgtable_free_cache(page_address(ptepage), \ |
| 143 | PTE_CACHE_NUM, PTE_TABLE_SIZE-1)) |
| 144 | #define __pmd_free_tlb(tlb, pmd) \ |
| 145 | pgtable_free_tlb(tlb, pgtable_free_cache(pmd, \ |
| 146 | PMD_CACHE_NUM, PMD_TABLE_SIZE-1)) |
Benjamin Herrenschmidt | 3c726f8 | 2005-11-07 11:06:55 +1100 | [diff] [blame] | 147 | #ifndef CONFIG_PPC_64K_PAGES |
David Gibson | e28f7fa | 2005-08-05 19:39:06 +1000 | [diff] [blame] | 148 | #define __pud_free_tlb(tlb, pmd) \ |
| 149 | pgtable_free_tlb(tlb, pgtable_free_cache(pud, \ |
| 150 | PUD_CACHE_NUM, PUD_TABLE_SIZE-1)) |
Benjamin Herrenschmidt | 3c726f8 | 2005-11-07 11:06:55 +1100 | [diff] [blame] | 151 | #endif /* CONFIG_PPC_64K_PAGES */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | |
| 153 | #define check_pgt_cache() do { } while (0) |
| 154 | |
Paul Mackerras | 047ea78 | 2005-11-19 20:17:32 +1100 | [diff] [blame] | 155 | #endif /* CONFIG_PPC64 */ |
| 156 | #endif /* _ASM_POWERPC_PGALLOC_H */ |