1#ifndef _SPARC64_PGALLOC_H 2#define _SPARC64_PGALLOC_H 3 4#include <linux/kernel.h> 5#include <linux/sched.h> 6#include <linux/mm.h> 7#include <linux/slab.h> 8 9#include <asm/spitfire.h> 10#include <asm/cpudata.h> 11#include <asm/cacheflush.h> 12#include <asm/page.h> 13 14/* Page table allocation/freeing. */ 15 16extern struct kmem_cache *pgtable_cache; 17 18static inline pgd_t *pgd_alloc(struct mm_struct *mm) 19{ 20 return kmem_cache_alloc(pgtable_cache, GFP_KERNEL); 21} 22 23static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) 24{ 25 kmem_cache_free(pgtable_cache, pgd); 26} 27 28#define pud_populate(MM, PUD, PMD) pud_set(PUD, PMD) 29 30static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) 31{ 32 return kmem_cache_alloc(pgtable_cache, 33 GFP_KERNEL|__GFP_REPEAT); 34} 35 36static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) 37{ 38 kmem_cache_free(pgtable_cache, pmd); 39} 40 41static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, 42 unsigned long address) 43{ 44 return (pte_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO); 45} 46 47static inline pgtable_t pte_alloc_one(struct mm_struct *mm, 48 unsigned long address) 49{ 50 struct page *page; 51 pte_t *pte; 52 53 pte = pte_alloc_one_kernel(mm, address); 54 if (!pte) 55 return NULL; 56 page = virt_to_page(pte); 57 pgtable_page_ctor(page); 58 return page; 59} 60 61static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) 62{ 63 free_page((unsigned long)pte); 64} 65 66static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage) 67{ 68 pgtable_page_dtor(ptepage); 69 __free_page(ptepage); 70} 71 72#define pmd_populate_kernel(MM, PMD, PTE) pmd_set(PMD, PTE) 73#define pmd_populate(MM,PMD,PTE_PAGE) \ 74 pmd_populate_kernel(MM,PMD,page_address(PTE_PAGE)) 75#define pmd_pgtable(pmd) pmd_page(pmd) 76 77#define check_pgt_cache() do { } while (0) 78 79static inline void pgtable_free(void *table, bool is_page) 80{ 81 if (is_page) 82 free_page((unsigned long)table); 83 else 84 kmem_cache_free(pgtable_cache, table); 85} 86 87#ifdef CONFIG_SMP 88 89struct mmu_gather; 90extern void tlb_remove_table(struct mmu_gather *, void *); 91 92static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page) 93{ 94 unsigned long pgf = (unsigned long)table; 95 if (is_page) 96 pgf |= 0x1UL; 97 tlb_remove_table(tlb, (void *)pgf); 98} 99 100static inline void __tlb_remove_table(void *_table) 101{ 102 void *table = (void *)((unsigned long)_table & ~0x1UL); 103 bool is_page = false; 104 105 if ((unsigned long)_table & 0x1UL) 106 is_page = true; 107 pgtable_free(table, is_page); 108} 109#else /* CONFIG_SMP */ 110static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, bool is_page) 111{ 112 pgtable_free(table, is_page); 113} 114#endif /* !CONFIG_SMP */ 115 116static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *ptepage, 117 unsigned long address) 118{ 119 pgtable_page_dtor(ptepage); 120 pgtable_free_tlb(tlb, page_address(ptepage), true); 121} 122 123#define __pmd_free_tlb(tlb, pmd, addr) \ 124 pgtable_free_tlb(tlb, pmd, false) 125 126#endif /* _SPARC64_PGALLOC_H */ 127