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| Source at commit 694c7fbe86b8a9c91392e505afcb9fcfc91deccc created 12 years 8 months ago. By Maarten ter Huurne, MIPS: JZ4740: Add cpufreq support | |
|---|---|
| 1 | /* |
| 2 | * This file is subject to the terms and conditions of the GNU General Public |
| 3 | * License. See the file "COPYING" in the main directory of this archive |
| 4 | * for more details. |
| 5 | * |
| 6 | * Copyright (C) 1999, 2000 by Silicon Graphics |
| 7 | * Copyright (C) 2003 by Ralf Baechle |
| 8 | */ |
| 9 | #include <linux/init.h> |
| 10 | #include <linux/mm.h> |
| 11 | #include <asm/fixmap.h> |
| 12 | #include <asm/pgtable.h> |
| 13 | #include <asm/pgalloc.h> |
| 14 | #include <asm/tlbflush.h> |
| 15 | |
| 16 | void pgd_init(unsigned long page) |
| 17 | { |
| 18 | unsigned long *p, *end; |
| 19 | unsigned long entry; |
| 20 | |
| 21 | #ifdef __PAGETABLE_PMD_FOLDED |
| 22 | entry = (unsigned long)invalid_pte_table; |
| 23 | #else |
| 24 | entry = (unsigned long)invalid_pmd_table; |
| 25 | #endif |
| 26 | |
| 27 | p = (unsigned long *) page; |
| 28 | end = p + PTRS_PER_PGD; |
| 29 | |
| 30 | do { |
| 31 | p[0] = entry; |
| 32 | p[1] = entry; |
| 33 | p[2] = entry; |
| 34 | p[3] = entry; |
| 35 | p[4] = entry; |
| 36 | p += 8; |
| 37 | p[-3] = entry; |
| 38 | p[-2] = entry; |
| 39 | p[-1] = entry; |
| 40 | } while (p != end); |
| 41 | } |
| 42 | |
| 43 | #ifndef __PAGETABLE_PMD_FOLDED |
| 44 | void pmd_init(unsigned long addr, unsigned long pagetable) |
| 45 | { |
| 46 | unsigned long *p, *end; |
| 47 | |
| 48 | p = (unsigned long *) addr; |
| 49 | end = p + PTRS_PER_PMD; |
| 50 | |
| 51 | do { |
| 52 | p[0] = pagetable; |
| 53 | p[1] = pagetable; |
| 54 | p[2] = pagetable; |
| 55 | p[3] = pagetable; |
| 56 | p[4] = pagetable; |
| 57 | p += 8; |
| 58 | p[-3] = pagetable; |
| 59 | p[-2] = pagetable; |
| 60 | p[-1] = pagetable; |
| 61 | } while (p != end); |
| 62 | } |
| 63 | #endif |
| 64 | |
| 65 | #ifdef CONFIG_TRANSPARENT_HUGEPAGE |
| 66 | |
| 67 | void pmdp_splitting_flush(struct vm_area_struct *vma, |
| 68 | unsigned long address, |
| 69 | pmd_t *pmdp) |
| 70 | { |
| 71 | if (!pmd_trans_splitting(*pmdp)) { |
| 72 | pmd_t pmd = pmd_mksplitting(*pmdp); |
| 73 | set_pmd_at(vma->vm_mm, address, pmdp, pmd); |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | #endif |
| 78 | |
| 79 | pmd_t mk_pmd(struct page *page, pgprot_t prot) |
| 80 | { |
| 81 | pmd_t pmd; |
| 82 | |
| 83 | pmd_val(pmd) = (page_to_pfn(page) << _PFN_SHIFT) | pgprot_val(prot); |
| 84 | |
| 85 | return pmd; |
| 86 | } |
| 87 | |
| 88 | void set_pmd_at(struct mm_struct *mm, unsigned long addr, |
| 89 | pmd_t *pmdp, pmd_t pmd) |
| 90 | { |
| 91 | *pmdp = pmd; |
| 92 | flush_tlb_all(); |
| 93 | } |
| 94 | |
| 95 | void __init pagetable_init(void) |
| 96 | { |
| 97 | unsigned long vaddr; |
| 98 | pgd_t *pgd_base; |
| 99 | |
| 100 | /* Initialize the entire pgd. */ |
| 101 | pgd_init((unsigned long)swapper_pg_dir); |
| 102 | #ifndef __PAGETABLE_PMD_FOLDED |
| 103 | pmd_init((unsigned long)invalid_pmd_table, (unsigned long)invalid_pte_table); |
| 104 | #endif |
| 105 | pgd_base = swapper_pg_dir; |
| 106 | /* |
| 107 | * Fixed mappings: |
| 108 | */ |
| 109 | vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK; |
| 110 | fixrange_init(vaddr, vaddr + FIXADDR_SIZE, pgd_base); |
| 111 | } |
| 112 | |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9
