/* 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. */ 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 */