Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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))) |
Martin Schwidefsky | 2f569af | 2008-02-08 04:22:04 -0800 | [diff] [blame] | 21 | #define pmd_pgtable(pmd) pmd_page(pmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | |
| 23 | /* |
| 24 | * Allocate and free page tables. |
| 25 | */ |
| 26 | extern pgd_t *pgd_alloc(struct mm_struct *); |
Benjamin Herrenschmidt | 5e54197 | 2008-02-04 22:29:14 -0800 | [diff] [blame] | 27 | extern void pgd_free(struct mm_struct *mm, pgd_t *pgd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | |
| 29 | extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long); |
Martin Schwidefsky | 2f569af | 2008-02-08 04:22:04 -0800 | [diff] [blame] | 30 | extern pgtable_t pte_alloc_one(struct mm_struct *, unsigned long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | |
Benjamin Herrenschmidt | 5e54197 | 2008-02-04 22:29:14 -0800 | [diff] [blame] | 32 | static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | { |
| 34 | free_page((unsigned long) pte); |
| 35 | } |
| 36 | |
Martin Schwidefsky | 2f569af | 2008-02-08 04:22:04 -0800 | [diff] [blame] | 37 | static inline void pte_free(struct mm_struct *mm, pgtable_t pte) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | { |
Martin Schwidefsky | 2f569af | 2008-02-08 04:22:04 -0800 | [diff] [blame] | 39 | pgtable_page_dtor(pte); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | __free_page(pte); |
| 41 | } |
| 42 | |
Benjamin Herrenschmidt | 9e1b32c | 2009-07-22 15:44:28 +1000 | [diff] [blame] | 43 | #define __pte_free_tlb(tlb,pte, address) \ |
Martin Schwidefsky | 2f569af | 2008-02-08 04:22:04 -0800 | [diff] [blame] | 44 | do { \ |
| 45 | pgtable_page_dtor(pte); \ |
| 46 | tlb_remove_page((tlb),(pte)); \ |
| 47 | } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | |
| 49 | #ifdef CONFIG_3_LEVEL_PGTABLES |
Jeff Dike | 7ef9390 | 2005-09-03 15:57:52 -0700 | [diff] [blame] | 50 | |
Benjamin Herrenschmidt | 5e54197 | 2008-02-04 22:29:14 -0800 | [diff] [blame] | 51 | static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) |
Jeff Dike | 7ef9390 | 2005-09-03 15:57:52 -0700 | [diff] [blame] | 52 | { |
| 53 | free_page((unsigned long)pmd); |
| 54 | } |
| 55 | |
Benjamin Herrenschmidt | 9e1b32c | 2009-07-22 15:44:28 +1000 | [diff] [blame] | 56 | #define __pmd_free_tlb(tlb,x, address) tlb_remove_page((tlb),virt_to_page(x)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | #endif |
| 58 | |
| 59 | #define check_pgt_cache() do { } while (0) |
| 60 | |
| 61 | #endif |
| 62 | |