1#ifndef _ASM_POWERPC_PGALLOC_32_H 2#define _ASM_POWERPC_PGALLOC_32_H 3 4#include <linux/threads.h> 5 6/* For 32-bit, all levels of page tables are just drawn from get_free_page() */ 7#define MAX_PGTABLE_INDEX_SIZE 0 8 9extern void __bad_pte(pmd_t *pmd); 10 11extern pgd_t *pgd_alloc(struct mm_struct *mm); 12extern void pgd_free(struct mm_struct *mm, pgd_t *pgd); 13 14/* 15 * We don't have any real pmd's, and this code never triggers because 16 * the pgd will always be present.. 17 */ 18/* #define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); }) */ 19#define pmd_free(mm, x) do { } while (0) 20#define __pmd_free_tlb(tlb,x,a) do { } while (0) 21/* #define pgd_populate(mm, pmd, pte) BUG() */ 22 23#ifndef CONFIG_BOOKE 24#define pmd_populate_kernel(mm, pmd, pte) \ 25 (pmd_val(*(pmd)) = __pa(pte) | _PMD_PRESENT) 26#define pmd_populate(mm, pmd, pte) \ 27 (pmd_val(*(pmd)) = (page_to_pfn(pte) << PAGE_SHIFT) | _PMD_PRESENT) 28#define pmd_pgtable(pmd) pmd_page(pmd) 29#else 30#define pmd_populate_kernel(mm, pmd, pte) \ 31 (pmd_val(*(pmd)) = (unsigned long)pte | _PMD_PRESENT) 32#define pmd_populate(mm, pmd, pte) \ 33 (pmd_val(*(pmd)) = (unsigned long)lowmem_page_address(pte) | _PMD_PRESENT) 34#define pmd_pgtable(pmd) pmd_page(pmd) 35#endif 36 37extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr); 38extern pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long addr); 39 40static inline void pgtable_free(void *table, unsigned index_size) 41{ 42 BUG_ON(index_size); /* 32-bit doesn't use this */ 43 free_page((unsigned long)table); 44} 45 46#define check_pgt_cache() do { } while (0) 47 48#endif /* _ASM_POWERPC_PGALLOC_32_H */ 49