1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H
3*4882a593Smuzhiyun #define _ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #ifndef __ASSEMBLY__
6*4882a593Smuzhiyun #ifdef CONFIG_HUGETLB_PAGE
7*4882a593Smuzhiyun /*
8*4882a593Smuzhiyun * We have PGD_INDEX_SIZ = 12 and PTE_INDEX_SIZE = 8, so that we can have
9*4882a593Smuzhiyun * 16GB hugepage pte in PGD and 16MB hugepage pte at PMD;
10*4882a593Smuzhiyun *
11*4882a593Smuzhiyun * Defined in such a way that we can optimize away code block at build time
12*4882a593Smuzhiyun * if CONFIG_HUGETLB_PAGE=n.
13*4882a593Smuzhiyun *
14*4882a593Smuzhiyun * returns true for pmd migration entries, THP, devmap, hugetlb
15*4882a593Smuzhiyun * But compile time dependent on CONFIG_HUGETLB_PAGE
16*4882a593Smuzhiyun */
pmd_huge(pmd_t pmd)17*4882a593Smuzhiyun static inline int pmd_huge(pmd_t pmd)
18*4882a593Smuzhiyun {
19*4882a593Smuzhiyun /*
20*4882a593Smuzhiyun * leaf pte for huge page
21*4882a593Smuzhiyun */
22*4882a593Smuzhiyun return !!(pmd_raw(pmd) & cpu_to_be64(_PAGE_PTE));
23*4882a593Smuzhiyun }
24*4882a593Smuzhiyun
pud_huge(pud_t pud)25*4882a593Smuzhiyun static inline int pud_huge(pud_t pud)
26*4882a593Smuzhiyun {
27*4882a593Smuzhiyun /*
28*4882a593Smuzhiyun * leaf pte for huge page
29*4882a593Smuzhiyun */
30*4882a593Smuzhiyun return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PTE));
31*4882a593Smuzhiyun }
32*4882a593Smuzhiyun
pgd_huge(pgd_t pgd)33*4882a593Smuzhiyun static inline int pgd_huge(pgd_t pgd)
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun /*
36*4882a593Smuzhiyun * leaf pte for huge page
37*4882a593Smuzhiyun */
38*4882a593Smuzhiyun return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PTE));
39*4882a593Smuzhiyun }
40*4882a593Smuzhiyun #define pgd_huge pgd_huge
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun /*
43*4882a593Smuzhiyun * With 64k page size, we have hugepage ptes in the pgd and pmd entries. We don't
44*4882a593Smuzhiyun * need to setup hugepage directory for them. Our pte and page directory format
45*4882a593Smuzhiyun * enable us to have this enabled.
46*4882a593Smuzhiyun */
hugepd_ok(hugepd_t hpd)47*4882a593Smuzhiyun static inline int hugepd_ok(hugepd_t hpd)
48*4882a593Smuzhiyun {
49*4882a593Smuzhiyun return 0;
50*4882a593Smuzhiyun }
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun #define is_hugepd(pdep) 0
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun /*
55*4882a593Smuzhiyun * This should never get called
56*4882a593Smuzhiyun */
get_hugepd_cache_index(int index)57*4882a593Smuzhiyun static inline int get_hugepd_cache_index(int index)
58*4882a593Smuzhiyun {
59*4882a593Smuzhiyun BUG();
60*4882a593Smuzhiyun }
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun #endif /* CONFIG_HUGETLB_PAGE */
63*4882a593Smuzhiyun
remap_4k_pfn(struct vm_area_struct * vma,unsigned long addr,unsigned long pfn,pgprot_t prot)64*4882a593Smuzhiyun static inline int remap_4k_pfn(struct vm_area_struct *vma, unsigned long addr,
65*4882a593Smuzhiyun unsigned long pfn, pgprot_t prot)
66*4882a593Smuzhiyun {
67*4882a593Smuzhiyun if (radix_enabled())
68*4882a593Smuzhiyun BUG();
69*4882a593Smuzhiyun return hash__remap_4k_pfn(vma, addr, pfn, prot);
70*4882a593Smuzhiyun }
71*4882a593Smuzhiyun #endif /* __ASSEMBLY__ */
72*4882a593Smuzhiyun #endif /*_ASM_POWERPC_BOOK3S_64_PGTABLE_64K_H */
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