| #ifndef _ASM_POWERPC_PGALLOC_32_H |
| #define _ASM_POWERPC_PGALLOC_32_H |
| |
| #include <linux/threads.h> |
| |
| /* For 32-bit, all levels of page tables are just drawn from get_free_page() */ |
| #define MAX_PGTABLE_INDEX_SIZE 0 |
| |
| extern void __bad_pte(pmd_t *pmd); |
| |
| extern pgd_t *pgd_alloc(struct mm_struct *mm); |
| extern void pgd_free(struct mm_struct *mm, pgd_t *pgd); |
| |
| /* |
| * We don't have any real pmd's, and this code never triggers because |
| * the pgd will always be present.. |
| */ |
| /* #define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); }) */ |
| #define pmd_free(mm, x) do { } while (0) |
| #define __pmd_free_tlb(tlb,x,a) do { } while (0) |
| /* #define pgd_populate(mm, pmd, pte) BUG() */ |
| |
| #ifndef CONFIG_BOOKE |
| #define pmd_populate_kernel(mm, pmd, pte) \ |
| (pmd_val(*(pmd)) = __pa(pte) | _PMD_PRESENT) |
| #define pmd_populate(mm, pmd, pte) \ |
| (pmd_val(*(pmd)) = (page_to_pfn(pte) << PAGE_SHIFT) | _PMD_PRESENT) |
| #define pmd_pgtable(pmd) pmd_page(pmd) |
| #else |
| #define pmd_populate_kernel(mm, pmd, pte) \ |
| (pmd_val(*(pmd)) = (unsigned long)pte | _PMD_PRESENT) |
| #define pmd_populate(mm, pmd, pte) \ |
| (pmd_val(*(pmd)) = (unsigned long)lowmem_page_address(pte) | _PMD_PRESENT) |
| #define pmd_pgtable(pmd) pmd_page(pmd) |
| #endif |
| |
| extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr); |
| extern pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long addr); |
| |
| static inline void pgtable_free(void *table, unsigned index_size) |
| { |
| BUG_ON(index_size); /* 32-bit doesn't use this */ |
| free_page((unsigned long)table); |
| } |
| |
| #define check_pgt_cache() do { } while (0) |
| |
| #endif /* _ASM_POWERPC_PGALLOC_32_H */ |
