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Diffstat (limited to 'include/asm-mips/pgtable.h')
| -rw-r--r-- | include/asm-mips/pgtable.h | 383 |
1 files changed, 0 insertions, 383 deletions
diff --git a/include/asm-mips/pgtable.h b/include/asm-mips/pgtable.h deleted file mode 100644 index 6a0edf72ffb..00000000000 --- a/include/asm-mips/pgtable.h +++ /dev/null @@ -1,383 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2003 Ralf Baechle - */ -#ifndef _ASM_PGTABLE_H -#define _ASM_PGTABLE_H - -#ifdef CONFIG_32BIT -#include <asm/pgtable-32.h> -#endif -#ifdef CONFIG_64BIT -#include <asm/pgtable-64.h> -#endif - -#include <asm/io.h> -#include <asm/pgtable-bits.h> - -struct mm_struct; -struct vm_area_struct; - -#define PAGE_NONE __pgprot(_PAGE_PRESENT | _CACHE_CACHABLE_NONCOHERENT) -#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \ - _page_cachable_default) -#define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_READ | \ - _page_cachable_default) -#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_READ | \ - _page_cachable_default) -#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE | \ - _PAGE_GLOBAL | _page_cachable_default) -#define PAGE_USERIO __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \ - _page_cachable_default) -#define PAGE_KERNEL_UNCACHED __pgprot(_PAGE_PRESENT | __READABLE | \ - __WRITEABLE | _PAGE_GLOBAL | _CACHE_UNCACHED) - -/* - * MIPS can't do page protection for execute, and considers that the same like - * read. Also, write permissions imply read permissions. This is the closest - * we can get by reasonable means.. - */ - -/* - * Dummy values to fill the table in mmap.c - * The real values will be generated at runtime - */ -#define __P000 __pgprot(0) -#define __P001 __pgprot(0) -#define __P010 __pgprot(0) -#define __P011 __pgprot(0) -#define __P100 __pgprot(0) -#define __P101 __pgprot(0) -#define __P110 __pgprot(0) -#define __P111 __pgprot(0) - -#define __S000 __pgprot(0) -#define __S001 __pgprot(0) -#define __S010 __pgprot(0) -#define __S011 __pgprot(0) -#define __S100 __pgprot(0) -#define __S101 __pgprot(0) -#define __S110 __pgprot(0) -#define __S111 __pgprot(0) - -extern unsigned long _page_cachable_default; - -/* - * ZERO_PAGE is a global shared page that is always zero; used - * for zero-mapped memory areas etc.. - */ - -extern unsigned long empty_zero_page; -extern unsigned long zero_page_mask; - -#define ZERO_PAGE(vaddr) \ - (virt_to_page((void *)(empty_zero_page + (((unsigned long)(vaddr)) & zero_page_mask)))) - -extern void paging_init(void); - -/* - * Conversion functions: convert a page and protection to a page entry, - * and a page entry and page directory to the page they refer to. - */ -#define pmd_phys(pmd) virt_to_phys((void *)pmd_val(pmd)) -#define pmd_page(pmd) (pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT)) -#define pmd_page_vaddr(pmd) pmd_val(pmd) - -#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) - -#define pte_none(pte) (!(((pte).pte_low | (pte).pte_high) & ~_PAGE_GLOBAL)) -#define pte_present(pte) ((pte).pte_low & _PAGE_PRESENT) - -static inline void set_pte(pte_t *ptep, pte_t pte) -{ - ptep->pte_high = pte.pte_high; - smp_wmb(); - ptep->pte_low = pte.pte_low; - //printk("pte_high %x pte_low %x\n", ptep->pte_high, ptep->pte_low); - - if (pte.pte_low & _PAGE_GLOBAL) { - pte_t *buddy = ptep_buddy(ptep); - /* - * Make sure the buddy is global too (if it's !none, - * it better already be global) - */ - if (pte_none(*buddy)) { - buddy->pte_low |= _PAGE_GLOBAL; - buddy->pte_high |= _PAGE_GLOBAL; - } - } -} -#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval) - -static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) -{ - pte_t null = __pte(0); - - /* Preserve global status for the pair */ - if (ptep_buddy(ptep)->pte_low & _PAGE_GLOBAL) - null.pte_low = null.pte_high = _PAGE_GLOBAL; - - set_pte_at(mm, addr, ptep, null); -} -#else - -#define pte_none(pte) (!(pte_val(pte) & ~_PAGE_GLOBAL)) -#define pte_present(pte) (pte_val(pte) & _PAGE_PRESENT) - -/* - * Certain architectures need to do special things when pte's - * within a page table are directly modified. Thus, the following - * hook is made available. - */ -static inline void set_pte(pte_t *ptep, pte_t pteval) -{ - *ptep = pteval; -#if !defined(CONFIG_CPU_R3000) && !defined(CONFIG_CPU_TX39XX) - if (pte_val(pteval) & _PAGE_GLOBAL) { - pte_t *buddy = ptep_buddy(ptep); - /* - * Make sure the buddy is global too (if it's !none, - * it better already be global) - */ - if (pte_none(*buddy)) - pte_val(*buddy) = pte_val(*buddy) | _PAGE_GLOBAL; - } -#endif -} -#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval) - -static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) -{ -#if !defined(CONFIG_CPU_R3000) && !defined(CONFIG_CPU_TX39XX) - /* Preserve global status for the pair */ - if (pte_val(*ptep_buddy(ptep)) & _PAGE_GLOBAL) - set_pte_at(mm, addr, ptep, __pte(_PAGE_GLOBAL)); - else -#endif - set_pte_at(mm, addr, ptep, __pte(0)); -} -#endif - -/* - * (pmds are folded into puds so this doesn't get actually called, - * but the define is needed for a generic inline function.) - */ -#define set_pmd(pmdptr, pmdval) do { *(pmdptr) = (pmdval); } while(0) - -#ifdef CONFIG_64BIT -/* - * (puds are folded into pgds so this doesn't get actually called, - * but the define is needed for a generic inline function.) - */ -#define set_pud(pudptr, pudval) do { *(pudptr) = (pudval); } while(0) -#endif - -#define PGD_T_LOG2 (__builtin_ffs(sizeof(pgd_t)) - 1) -#define PMD_T_LOG2 (__builtin_ffs(sizeof(pmd_t)) - 1) -#define PTE_T_LOG2 (__builtin_ffs(sizeof(pte_t)) - 1) - -/* - * We used to declare this array with size but gcc 3.3 and older are not able - * to find that this expression is a constant, so the size is dropped. - */ -extern pgd_t swapper_pg_dir[]; - -/* - * The following only work if pte_present() is true. - * Undefined behaviour if not.. - */ -#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) -static inline int pte_write(pte_t pte) { return pte.pte_low & _PAGE_WRITE; } -static inline int pte_dirty(pte_t pte) { return pte.pte_low & _PAGE_MODIFIED; } -static inline int pte_young(pte_t pte) { return pte.pte_low & _PAGE_ACCESSED; } -static inline int pte_file(pte_t pte) { return pte.pte_low & _PAGE_FILE; } - -static inline pte_t pte_wrprotect(pte_t pte) -{ - pte.pte_low &= ~(_PAGE_WRITE | _PAGE_SILENT_WRITE); - pte.pte_high &= ~_PAGE_SILENT_WRITE; - return pte; -} - -static inline pte_t pte_mkclean(pte_t pte) -{ - pte.pte_low &= ~(_PAGE_MODIFIED | _PAGE_SILENT_WRITE); - pte.pte_high &= ~_PAGE_SILENT_WRITE; - return pte; -} - -static inline pte_t pte_mkold(pte_t pte) -{ - pte.pte_low &= ~(_PAGE_ACCESSED | _PAGE_SILENT_READ); - pte.pte_high &= ~_PAGE_SILENT_READ; - return pte; -} - -static inline pte_t pte_mkwrite(pte_t pte) -{ - pte.pte_low |= _PAGE_WRITE; - if (pte.pte_low & _PAGE_MODIFIED) { - pte.pte_low |= _PAGE_SILENT_WRITE; - pte.pte_high |= _PAGE_SILENT_WRITE; - } - return pte; -} - -static inline pte_t pte_mkdirty(pte_t pte) -{ - pte.pte_low |= _PAGE_MODIFIED; - if (pte.pte_low & _PAGE_WRITE) { - pte.pte_low |= _PAGE_SILENT_WRITE; - pte.pte_high |= _PAGE_SILENT_WRITE; - } - return pte; -} - -static inline pte_t pte_mkyoung(pte_t pte) -{ - pte.pte_low |= _PAGE_ACCESSED; - if (pte.pte_low & _PAGE_READ) { - pte.pte_low |= _PAGE_SILENT_READ; - pte.pte_high |= _PAGE_SILENT_READ; - } - return pte; -} -#else -static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITE; } -static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_MODIFIED; } -static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; } -static inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE; } - -static inline pte_t pte_wrprotect(pte_t pte) -{ - pte_val(pte) &= ~(_PAGE_WRITE | _PAGE_SILENT_WRITE); - return pte; -} - -static inline pte_t pte_mkclean(pte_t pte) -{ - pte_val(pte) &= ~(_PAGE_MODIFIED|_PAGE_SILENT_WRITE); - return pte; -} - -static inline pte_t pte_mkold(pte_t pte) -{ - pte_val(pte) &= ~(_PAGE_ACCESSED|_PAGE_SILENT_READ); - return pte; -} - -static inline pte_t pte_mkwrite(pte_t pte) -{ - pte_val(pte) |= _PAGE_WRITE; - if (pte_val(pte) & _PAGE_MODIFIED) - pte_val(pte) |= _PAGE_SILENT_WRITE; - return pte; -} - -static inline pte_t pte_mkdirty(pte_t pte) -{ - pte_val(pte) |= _PAGE_MODIFIED; - if (pte_val(pte) & _PAGE_WRITE) - pte_val(pte) |= _PAGE_SILENT_WRITE; - return pte; -} - -static inline pte_t pte_mkyoung(pte_t pte) -{ - pte_val(pte) |= _PAGE_ACCESSED; - if (pte_val(pte) & _PAGE_READ) - pte_val(pte) |= _PAGE_SILENT_READ; - return pte; -} -#endif -static inline int pte_special(pte_t pte) { return 0; } -static inline pte_t pte_mkspecial(pte_t pte) { return pte; } - -/* - * Macro to make mark a page protection value as "uncacheable". Note - * that "protection" is really a misnomer here as the protection value - * contains the memory attribute bits, dirty bits, and various other - * bits as well. - */ -#define pgprot_noncached pgprot_noncached - -static inline pgprot_t pgprot_noncached(pgprot_t _prot) -{ - unsigned long prot = pgprot_val(_prot); - - prot = (prot & ~_CACHE_MASK) | _CACHE_UNCACHED; - - return __pgprot(prot); -} - -/* - * Conversion functions: convert a page and protection to a page entry, - * and a page entry and page directory to the page they refer to. - */ -#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot)) - -#if defined(CONFIG_64BIT_PHYS_ADDR) && defined(CONFIG_CPU_MIPS32) -static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) -{ - pte.pte_low &= _PAGE_CHG_MASK; - pte.pte_high &= ~0x3f; - pte.pte_low |= pgprot_val(newprot); - pte.pte_high |= pgprot_val(newprot) & 0x3f; - return pte; -} -#else -static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) -{ - return __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot)); -} -#endif - - -extern void __update_tlb(struct vm_area_struct *vma, unsigned long address, - pte_t pte); -extern void __update_cache(struct vm_area_struct *vma, unsigned long address, - pte_t pte); - -static inline void update_mmu_cache(struct vm_area_struct *vma, - unsigned long address, pte_t pte) -{ - __update_tlb(vma, address, pte); - __update_cache(vma, address, pte); -} - -#define kern_addr_valid(addr) (1) - -#ifdef CONFIG_64BIT_PHYS_ADDR -extern int remap_pfn_range(struct vm_area_struct *vma, unsigned long from, unsigned long pfn, unsigned long size, pgprot_t prot); - -static inline int io_remap_pfn_range(struct vm_area_struct *vma, - unsigned long vaddr, - unsigned long pfn, - unsigned long size, - pgprot_t prot) -{ - phys_t phys_addr_high = fixup_bigphys_addr(pfn << PAGE_SHIFT, size); - return remap_pfn_range(vma, vaddr, phys_addr_high >> PAGE_SHIFT, size, prot); -} -#else -#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \ - remap_pfn_range(vma, vaddr, pfn, size, prot) -#endif - -#include <asm-generic/pgtable.h> - -/* - * We provide our own get_unmapped area to cope with the virtual aliasing - * constraints placed on us by the cache architecture. - */ -#define HAVE_ARCH_UNMAPPED_AREA - -/* - * No page table caches to initialise - */ -#define pgtable_cache_init() do { } while (0) - -#endif /* _ASM_PGTABLE_H */ |