1#ifndef _ASM_SCORE_PGALLOC_H
2#define _ASM_SCORE_PGALLOC_H
3
4#include <linux/mm.h>
5#include <linux/highmem.h>
6static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
7	pte_t *pte)
8{
9	set_pmd(pmd, __pmd((unsigned long)pte));
10}
11
12static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
13	pgtable_t pte)
14{
15	set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
16}
17
18#define pmd_pgtable(pmd)	pmd_page(pmd)
19
20static inline pgd_t *pgd_alloc(struct mm_struct *mm)
21{
22	pgd_t *ret, *init;
23
24	ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_ORDER);
25	if (ret) {
26		init = pgd_offset(&init_mm, 0UL);
27		pgd_init((unsigned long)ret);
28		memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD,
29		(PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
30	}
31
32	return ret;
33}
34
35static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
36{
37	free_pages((unsigned long)pgd, PGD_ORDER);
38}
39
40static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
41	unsigned long address)
42{
43	pte_t *pte;
44
45	pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO,
46					PTE_ORDER);
47
48	return pte;
49}
50
51static inline struct page *pte_alloc_one(struct mm_struct *mm,
52	unsigned long address)
53{
54	struct page *pte;
55
56	pte = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER);
57	if (!pte)
58		return NULL;
59	clear_highpage(pte);
60	if (!pgtable_page_ctor(pte)) {
61		__free_page(pte);
62		return NULL;
63	}
64	return pte;
65}
66
67static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
68{
69	free_pages((unsigned long)pte, PTE_ORDER);
70}
71
72static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
73{
74	pgtable_page_dtor(pte);
75	__free_pages(pte, PTE_ORDER);
76}
77
78#define __pte_free_tlb(tlb, pte, buf)			\
79do {							\
80	pgtable_page_dtor(pte);				\
81	tlb_remove_page((tlb), pte);			\
82} while (0)
83
84#define check_pgt_cache()		do {} while (0)
85
86#endif /* _ASM_SCORE_PGALLOC_H */
87