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
29/*
30 * With radix , we have hugepage ptes in the pud and pmd entries. We don't
31 * need to setup hugepage directory for them. Our pte and page directory format
32 * enable us to have this enabled.
33 */
34static inline int hugepd_ok(hugepd_t hpd)
35{
36	if (radix_enabled())
37		return 0;
38	return hash__hugepd_ok(hpd);
39}
40#define is_hugepd(hpd)		(hugepd_ok(hpd))
41
42/*
43 * 16M and 16G huge page directory tables are allocated from slab cache
44 *
45 */
46#define H_16M_CACHE_INDEX (PAGE_SHIFT + H_PTE_INDEX_SIZE + H_PMD_INDEX_SIZE - 24)
47#define H_16G_CACHE_INDEX                                                      \
48	(PAGE_SHIFT + H_PTE_INDEX_SIZE + H_PMD_INDEX_SIZE + H_PUD_INDEX_SIZE - 34)
49
50static inline int get_hugepd_cache_index(int index)
51{
52	switch (index) {
53	case H_16M_CACHE_INDEX:
54		return HTLB_16M_INDEX;
55	case H_16G_CACHE_INDEX:
56		return HTLB_16G_INDEX;
57	default:
58		BUG();
59	}
60	/* should not reach */
61}
62
63#endif /* CONFIG_HUGETLB_PAGE */
64
65#endif /* __ASSEMBLY__ */
66
67#endif /*_ASM_POWERPC_BOOK3S_64_PGTABLE_4K_H */
68