[mirror_ubuntu-zesty-kernel.git] / include / asm-powerpc / pgalloc-32.h

#ifndef _ASM_POWERPC_PGALLOC_32_H
#define _ASM_POWERPC_PGALLOC_32_H

#include <linux/threads.h>

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)		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)
#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)
#endif

extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);
extern struct page *pte_alloc_one(struct mm_struct *mm, unsigned long addr);
extern void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
extern void pte_free(struct mm_struct *mm, struct page *pte);

#define __pte_free_tlb(tlb, pte)	pte_free((tlb)->mm, (pte))

#define check_pgt_cache()	do { } while (0)

#endif /* _ASM_POWERPC_PGALLOC_32_H */
Commit	Line	Data
f88df14b DG	1	#ifndef _ASM_POWERPC_PGALLOC_32_H
	2	#define _ASM_POWERPC_PGALLOC_32_H
	3
	4	#include <linux/threads.h>
	5
	6	extern void __bad_pte(pmd_t *pmd);
	7
	8	extern pgd_t pgd_alloc(struct mm_struct mm);
5e541973	9	extern void pgd_free(struct mm_struct mm, pgd_t pgd);
f88df14b DG	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	*/
d1953c88	15	/* #define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t )2); }) /
5e541973	16	#define pmd_free(mm, x) do { } while (0)
f88df14b	17	#define __pmd_free_tlb(tlb,x) do { } while (0)
d1953c88	18	/* #define pgd_populate(mm, pmd, pte) BUG() */
f88df14b DG	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
	32	extern pte_t pte_alloc_one_kernel(struct mm_struct mm, unsigned long addr);
	33	extern struct page pte_alloc_one(struct mm_struct mm, unsigned long addr);
5e541973 BH	34	extern void pte_free_kernel(struct mm_struct mm, pte_t pte);
5e541973 BH	35	extern void pte_free(struct mm_struct mm, struct page pte);
f88df14b	36
5e541973	37	#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, (pte))
f88df14b DG	38
	39	#define check_pgt_cache() do { } while (0)
	40
	41	#endif /* _ASM_POWERPC_PGALLOC_32_H */