[mirror_ubuntu-artful-kernel.git] / arch / powerpc / include / asm / book3s / 64 / pgtable-64k.h

#ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H
#define _ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H

#ifndef __ASSEMBLY__
#ifdef CONFIG_HUGETLB_PAGE
/*
 * We have PGD_INDEX_SIZ = 12 and PTE_INDEX_SIZE = 8, so that we can have
 * 16GB hugepage pte in PGD and 16MB hugepage pte at PMD;
 *
 * Defined in such a way that we can optimize away code block at build time
 * if CONFIG_HUGETLB_PAGE=n.
 */
static inline int pmd_huge(pmd_t pmd)
{
	/*
	 * leaf pte for huge page
	 */
	return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE));
}

static inline int pud_huge(pud_t pud)
{
	/*
	 * leaf pte for huge page
	 */
	return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE));
}

static inline int pgd_huge(pgd_t pgd)
{
	/*
	 * leaf pte for huge page
	 */
	return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PTE));
}
#define pgd_huge pgd_huge

/*
 * With 64k page size, we have hugepage ptes in the pgd and pmd entries. We don't
 * need to setup hugepage directory for them. Our pte and page directory format
 * enable us to have this enabled.
 */
static inline int hugepd_ok(hugepd_t hpd)
{
	return 0;
}
#define is_hugepd(pdep)			0

#else /* !CONFIG_HUGETLB_PAGE */
static inline int pmd_huge(pmd_t pmd) { return 0; }
static inline int pud_huge(pud_t pud) { return 0; }
#endif /* CONFIG_HUGETLB_PAGE */

static inline int remap_4k_pfn(struct vm_area_struct *vma, unsigned long addr,
			       unsigned long pfn, pgprot_t prot)
{
	if (radix_enabled())
		BUG();
	return hash__remap_4k_pfn(vma, addr, pfn, prot);
}
#endif	/* __ASSEMBLY__ */
#endif /*_ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H */
Commit	Line	Data
a9252aae AK	1	#ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H
	2	#define _ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H
	3
	4	#ifndef __ASSEMBLY__
	5	#ifdef CONFIG_HUGETLB_PAGE
	6	/*
	7	* We have PGD_INDEX_SIZ = 12 and PTE_INDEX_SIZE = 8, so that we can have
	8	* 16GB hugepage pte in PGD and 16MB hugepage pte at PMD;
	9	*
	10	* Defined in such a way that we can optimize away code block at build time
	11	* if CONFIG_HUGETLB_PAGE=n.
	12	*/
	13	static inline int pmd_huge(pmd_t pmd)
	14	{
	15	/*
	16	* leaf pte for huge page
	17	*/
66c570f5	18	return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE));
a9252aae AK	19	}
	20
	21	static inline int pud_huge(pud_t pud)
	22	{
	23	/*
	24	* leaf pte for huge page
	25	*/
66c570f5	26	return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE));
a9252aae AK	27	}
	28
	29	static inline int pgd_huge(pgd_t pgd)
	30	{
	31	/*
	32	* leaf pte for huge page
	33	*/
66c570f5	34	return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PTE));
a9252aae AK	35	}
	36	#define pgd_huge pgd_huge
	37
a9252aae AK	38	/*
	39	* With 64k page size, we have hugepage ptes in the pgd and pmd entries. We don't
	40	* need to setup hugepage directory for them. Our pte and page directory format
	41	* enable us to have this enabled.
	42	*/
	43	static inline int hugepd_ok(hugepd_t hpd)
	44	{
	45	return 0;
	46	}
	47	#define is_hugepd(pdep) 0
a9252aae	48
aad71e39 ME	49	#else /* !CONFIG_HUGETLB_PAGE */
	50	static inline int pmd_huge(pmd_t pmd) { return 0; }
	51	static inline int pud_huge(pud_t pud) { return 0; }
a9252aae AK	52	#endif /* CONFIG_HUGETLB_PAGE */
a9252aae AK	53
6cc1a0ee AK	54	static inline int remap_4k_pfn(struct vm_area_struct *vma, unsigned long addr,
	55	unsigned long pfn, pgprot_t prot)
	56	{
	57	if (radix_enabled())
	58	BUG();
	59	return hash__remap_4k_pfn(vma, addr, pfn, prot);
6cc1a0ee	60	}
a9252aae AK	61	#endif /* __ASSEMBLY__ */
a9252aae AK	62	#endif /_ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H /