1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H
3#define _ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H
4/*
5 * hash 4k can't share hugetlb and also doesn't support THP
6 */
7#ifndef __ASSEMBLY__
8#ifdef CONFIG_HUGETLB_PAGE
9static inline int pmd_huge(pmd_t pmd)
10{
11	/*
12	 * leaf pte for huge page
13	 */
14	if (radix_enabled())
15		return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE));
16	return 0;
17}
18
19static inline int pud_huge(pud_t pud)
20{
21	/*
22	 * leaf pte for huge page
23	 */
24	if (radix_enabled())
25		return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE));
26	return 0;
27}
28
29static inline int pgd_huge(pgd_t pgd)
30{
31	/*
32	 * leaf pte for huge page
33	 */
34	if (radix_enabled())
35		return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PTE));
36	return 0;
37}
38#define pgd_huge pgd_huge
39/*
40 * With radix , we have hugepage ptes in the pud and pmd entries. We don't
41 * need to setup hugepage directory for them. Our pte and page directory format
42 * enable us to have this enabled.
43 */
44static inline int hugepd_ok(hugepd_t hpd)
45{
46	if (radix_enabled())
47		return 0;
48	return hash__hugepd_ok(hpd);
49}
50#define is_hugepd(hpd)		(hugepd_ok(hpd))
51
52/*
53 * 16M and 16G huge page directory tables are allocated from slab cache
54 *
55 */
56#define H_16M_CACHE_INDEX (PAGE_SHIFT + H_PTE_INDEX_SIZE + H_PMD_INDEX_SIZE - 24)
57#define H_16G_CACHE_INDEX                                                      \
58	(PAGE_SHIFT + H_PTE_INDEX_SIZE + H_PMD_INDEX_SIZE + H_PUD_INDEX_SIZE - 34)
59
60static inline int get_hugepd_cache_index(int index)
61{
62	switch (index) {
63	case H_16M_CACHE_INDEX:
64		return HTLB_16M_INDEX;
65	case H_16G_CACHE_INDEX:
66		return HTLB_16G_INDEX;
67	default:
68		BUG();
69	}
70	/* should not reach */
71}
72
73#endif /* CONFIG_HUGETLB_PAGE */
74
75#endif /* __ASSEMBLY__ */
76
77#endif /*_ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H */
78