49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
#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 */
|