1 #ifndef _SPARC_PGALLOC_H 2 #define _SPARC_PGALLOC_H 3 4 #include <linux/kernel.h> 5 #include <linux/sched.h> 6 7 #include <asm/pgtsrmmu.h> 8 #include <asm/pgtable.h> 9 #include <asm/vaddrs.h> 10 #include <asm/page.h> 11 12 struct page; 13 14 extern struct pgtable_cache_struct { 15 unsigned long *pgd_cache; 16 unsigned long *pte_cache; 17 unsigned long pgtable_cache_sz; 18 unsigned long pgd_cache_sz; 19 } pgt_quicklists; 20 21 void *srmmu_get_nocache(int size, int align); 22 void srmmu_free_nocache(void *addr, int size); 23 24 #define pgd_quicklist (pgt_quicklists.pgd_cache) 25 #define pmd_quicklist ((unsigned long *)0) 26 #define pte_quicklist (pgt_quicklists.pte_cache) 27 #define pgtable_cache_size (pgt_quicklists.pgtable_cache_sz) 28 #define pgd_cache_size (pgt_quicklists.pgd_cache_sz) 29 30 #define check_pgt_cache() do { } while (0) 31 32 pgd_t *get_pgd_fast(void); 33 static inline void free_pgd_fast(pgd_t *pgd) 34 { 35 srmmu_free_nocache(pgd, SRMMU_PGD_TABLE_SIZE); 36 } 37 38 #define pgd_free(mm, pgd) free_pgd_fast(pgd) 39 #define pgd_alloc(mm) get_pgd_fast() 40 41 static inline void pgd_set(pgd_t * pgdp, pmd_t * pmdp) 42 { 43 unsigned long pa = __nocache_pa((unsigned long)pmdp); 44 45 set_pte((pte_t *)pgdp, (SRMMU_ET_PTD | (pa >> 4))); 46 } 47 48 #define pgd_populate(MM, PGD, PMD) pgd_set(PGD, PMD) 49 50 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, 51 unsigned long address) 52 { 53 return srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE, 54 SRMMU_PMD_TABLE_SIZE); 55 } 56 57 static inline void free_pmd_fast(pmd_t * pmd) 58 { 59 srmmu_free_nocache(pmd, SRMMU_PMD_TABLE_SIZE); 60 } 61 62 #define pmd_free(mm, pmd) free_pmd_fast(pmd) 63 #define __pmd_free_tlb(tlb, pmd, addr) pmd_free((tlb)->mm, pmd) 64 65 void pmd_populate(struct mm_struct *mm, pmd_t *pmdp, struct page *ptep); 66 #define pmd_pgtable(pmd) pmd_page(pmd) 67 68 void pmd_set(pmd_t *pmdp, pte_t *ptep); 69 #define pmd_populate_kernel(MM, PMD, PTE) pmd_set(PMD, PTE) 70 71 pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address); 72 73 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, 74 unsigned long address) 75 { 76 return srmmu_get_nocache(PTE_SIZE, PTE_SIZE); 77 } 78 79 80 static inline void free_pte_fast(pte_t *pte) 81 { 82 srmmu_free_nocache(pte, PTE_SIZE); 83 } 84 85 #define pte_free_kernel(mm, pte) free_pte_fast(pte) 86 87 void pte_free(struct mm_struct * mm, pgtable_t pte); 88 #define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, pte) 89 90 #endif /* _SPARC_PGALLOC_H */ 91