1/*
2 * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
3 * Copyright 2003 PathScale, Inc.
4 * Derived from include/asm-i386/pgalloc.h and include/asm-i386/pgtable.h
5 * Licensed under the GPL
6 */
7
8#ifndef __UM_PGALLOC_H
9#define __UM_PGALLOC_H
10
11#include "linux/mm.h"
12#include "asm/fixmap.h"
13
14#define pmd_populate_kernel(mm, pmd, pte) \
15	set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) __pa(pte)))
16
17#define pmd_populate(mm, pmd, pte) 				\
18	set_pmd(pmd, __pmd(_PAGE_TABLE +			\
19		((unsigned long long)page_to_pfn(pte) <<	\
20			(unsigned long long) PAGE_SHIFT)))
21
22/*
23 * Allocate and free page tables.
24 */
25extern pgd_t *pgd_alloc(struct mm_struct *);
26extern void pgd_free(pgd_t *pgd);
27
28extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
29extern struct page *pte_alloc_one(struct mm_struct *, unsigned long);
30
31static inline void pte_free_kernel(pte_t *pte)
32{
33	free_page((unsigned long) pte);
34}
35
36static inline void pte_free(struct page *pte)
37{
38	__free_page(pte);
39}
40
41#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
42
43#ifdef CONFIG_3_LEVEL_PGTABLES
44
45extern __inline__ void pmd_free(pmd_t *pmd)
46{
47	free_page((unsigned long)pmd);
48}
49
50#define __pmd_free_tlb(tlb,x)   tlb_remove_page((tlb),virt_to_page(x))
51#endif
52
53#define check_pgt_cache()	do { } while (0)
54
55#endif
56
57/*
58 * Overrides for Emacs so that we follow Linus's tabbing style.
59 * Emacs will notice this stuff at the end of the file and automatically
60 * adjust the settings for this buffer only.  This must remain at the end
61 * of the file.
62 * ---------------------------------------------------------------------------
63 * Local variables:
64 * c-file-style: "linux"
65 * End:
66 */
67