1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * arch/sh/mm/hugetlbpage.c
 4 *
 5 * SuperH HugeTLB page support.
 6 *
 7 * Cloned from sparc64 by Paul Mundt.
 8 *
 9 * Copyright (C) 2002, 2003 David S. Miller (davem@redhat.com)
10 */
11
12#include <linux/init.h>
13#include <linux/fs.h>
14#include <linux/mm.h>
15#include <linux/hugetlb.h>
16#include <linux/pagemap.h>
17#include <linux/sysctl.h>
18
19#include <asm/mman.h>
 
20#include <asm/tlb.h>
21#include <asm/tlbflush.h>
22#include <asm/cacheflush.h>
23
24pte_t *huge_pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma,
25			unsigned long addr, unsigned long sz)
26{
27	pgd_t *pgd;
28	p4d_t *p4d;
29	pud_t *pud;
30	pmd_t *pmd;
31	pte_t *pte = NULL;
32
33	pgd = pgd_offset(mm, addr);
34	if (pgd) {
35		p4d = p4d_alloc(mm, pgd, addr);
36		if (p4d) {
37			pud = pud_alloc(mm, p4d, addr);
38			if (pud) {
39				pmd = pmd_alloc(mm, pud, addr);
40				if (pmd)
41					pte = pte_alloc_map(mm, pmd, addr);
42			}
43		}
44	}
45
46	return pte;
47}
48
49pte_t *huge_pte_offset(struct mm_struct *mm,
50		       unsigned long addr, unsigned long sz)
51{
52	pgd_t *pgd;
53	p4d_t *p4d;
54	pud_t *pud;
55	pmd_t *pmd;
56	pte_t *pte = NULL;
57
58	pgd = pgd_offset(mm, addr);
59	if (pgd) {
60		p4d = p4d_offset(pgd, addr);
61		if (p4d) {
62			pud = pud_offset(p4d, addr);
63			if (pud) {
64				pmd = pmd_offset(pud, addr);
65				if (pmd)
66					pte = pte_offset_map(pmd, addr);
67			}
68		}
69	}
70
71	return pte;
72}
73
74int pmd_huge(pmd_t pmd)
75{
76	return 0;
77}
78
79int pud_huge(pud_t pud)
80{
81	return 0;
82}

 1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * arch/sh/mm/hugetlbpage.c
 4 *
 5 * SuperH HugeTLB page support.
 6 *
 7 * Cloned from sparc64 by Paul Mundt.
 8 *
 9 * Copyright (C) 2002, 2003 David S. Miller (davem@redhat.com)
10 */
11
12#include <linux/init.h>
13#include <linux/fs.h>
14#include <linux/mm.h>
15#include <linux/hugetlb.h>
16#include <linux/pagemap.h>
17#include <linux/sysctl.h>
18
19#include <asm/mman.h>
20#include <asm/pgalloc.h>
21#include <asm/tlb.h>
22#include <asm/tlbflush.h>
23#include <asm/cacheflush.h>
24
25pte_t *huge_pte_alloc(struct mm_struct *mm,
26			unsigned long addr, unsigned long sz)
27{
28	pgd_t *pgd;
 
29	pud_t *pud;
30	pmd_t *pmd;
31	pte_t *pte = NULL;
32
33	pgd = pgd_offset(mm, addr);
34	if (pgd) {
35		pud = pud_alloc(mm, pgd, addr);
36		if (pud) {
37			pmd = pmd_alloc(mm, pud, addr);
38			if (pmd)
39				pte = pte_alloc_map(mm, pmd, addr);
 
 
 
40		}
41	}
42
43	return pte;
44}
45
46pte_t *huge_pte_offset(struct mm_struct *mm,
47		       unsigned long addr, unsigned long sz)
48{
49	pgd_t *pgd;
 
50	pud_t *pud;
51	pmd_t *pmd;
52	pte_t *pte = NULL;
53
54	pgd = pgd_offset(mm, addr);
55	if (pgd) {
56		pud = pud_offset(pgd, addr);
57		if (pud) {
58			pmd = pmd_offset(pud, addr);
59			if (pmd)
60				pte = pte_offset_map(pmd, addr);
 
 
 
61		}
62	}
63
64	return pte;
65}
66
67int pmd_huge(pmd_t pmd)
68{
69	return 0;
70}
71
72int pud_huge(pud_t pud)
73{
74	return 0;
75}