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/* SPDX-License-Identifier: GPL-2.0 */
#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.
*
* returns true for pmd migration entries, THP, devmap, hugetlb
* But compile time dependent on CONFIG_HUGETLB_PAGE
*/
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
/*
* This should never get called
*/
static inline int get_hugepd_cache_index(int index)
{
BUG();
}
#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 */
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