1#ifndef _ASM_POWERPC_PGALLOC_32_H
2#define _ASM_POWERPC_PGALLOC_32_H
3
4#include <linux/threads.h>
5
6extern void __bad_pte(pmd_t *pmd);
7
8extern pgd_t *pgd_alloc(struct mm_struct *mm);
9extern void pgd_free(pgd_t *pgd);
10
11/*
12 * We don't have any real pmd's, and this code never triggers because
13 * the pgd will always be present..
14 */
15/* #define pmd_alloc_one(mm,address)       ({ BUG(); ((pmd_t *)2); }) */
16#define pmd_free(x)                     do { } while (0)
17#define __pmd_free_tlb(tlb,x)		do { } while (0)
18/* #define pgd_populate(mm, pmd, pte)      BUG() */
19
20#ifndef CONFIG_BOOKE
21#define pmd_populate_kernel(mm, pmd, pte)	\
22		(pmd_val(*(pmd)) = __pa(pte) | _PMD_PRESENT)
23#define pmd_populate(mm, pmd, pte)	\
24		(pmd_val(*(pmd)) = (page_to_pfn(pte) << PAGE_SHIFT) | _PMD_PRESENT)
25#else
26#define pmd_populate_kernel(mm, pmd, pte)	\
27		(pmd_val(*(pmd)) = (unsigned long)pte | _PMD_PRESENT)
28#define pmd_populate(mm, pmd, pte)	\
29		(pmd_val(*(pmd)) = (unsigned long)lowmem_page_address(pte) | _PMD_PRESENT)
30#endif
31
32extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);
33extern struct page *pte_alloc_one(struct mm_struct *mm, unsigned long addr);
34extern void pte_free_kernel(pte_t *pte);
35extern void pte_free(struct page *pte);
36
37#define __pte_free_tlb(tlb, pte)	pte_free((pte))
38
39#define check_pgt_cache()	do { } while (0)
40
41#endif /* _ASM_POWERPC_PGALLOC_32_H */
42