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Diffstat (limited to 'include/asm-mips/page.h')
| -rw-r--r-- | include/asm-mips/page.h | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/include/asm-mips/page.h b/include/asm-mips/page.h deleted file mode 100644 index fe7a88e..0000000 --- a/include/asm-mips/page.h +++ /dev/null @@ -1,191 +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) 1994 - 1999, 2000, 03 Ralf Baechle - * Copyright (C) 1999, 2000 Silicon Graphics, Inc. - */ -#ifndef _ASM_PAGE_H -#define _ASM_PAGE_H - -#include <spaces.h> - -/* - * PAGE_SHIFT determines the page size - */ -#ifdef CONFIG_PAGE_SIZE_4KB -#define PAGE_SHIFT 12 -#endif -#ifdef CONFIG_PAGE_SIZE_8KB -#define PAGE_SHIFT 13 -#endif -#ifdef CONFIG_PAGE_SIZE_16KB -#define PAGE_SHIFT 14 -#endif -#ifdef CONFIG_PAGE_SIZE_64KB -#define PAGE_SHIFT 16 -#endif -#define PAGE_SIZE (1UL << PAGE_SHIFT) -#define PAGE_MASK (~((1 << PAGE_SHIFT) - 1)) - -#ifndef __ASSEMBLY__ - -#include <linux/pfn.h> -#include <asm/io.h> - -extern void build_clear_page(void); -extern void build_copy_page(void); - -/* - * It's normally defined only for FLATMEM config but it's - * used in our early mem init code for all memory models. - * So always define it. - */ -#define ARCH_PFN_OFFSET PFN_UP(PHYS_OFFSET) - -extern void clear_page(void * page); -extern void copy_page(void * to, void * from); - -extern unsigned long shm_align_mask; - -static inline unsigned long pages_do_alias(unsigned long addr1, - unsigned long addr2) -{ - return (addr1 ^ addr2) & shm_align_mask; -} - -struct page; - -static inline void clear_user_page(void *addr, unsigned long vaddr, - struct page *page) -{ - extern void (*flush_data_cache_page)(unsigned long addr); - - clear_page(addr); - if (pages_do_alias((unsigned long) addr, vaddr & PAGE_MASK)) - flush_data_cache_page((unsigned long)addr); -} - -extern void copy_user_page(void *vto, void *vfrom, unsigned long vaddr, - struct page *to); -struct vm_area_struct; -extern void copy_user_highpage(struct page *to, struct page *from, - unsigned long vaddr, struct vm_area_struct *vma); - -#define __HAVE_ARCH_COPY_USER_HIGHPAGE - -/* - * These are used to make use of C type-checking.. - */ -#ifdef CONFIG_64BIT_PHYS_ADDR - #ifdef CONFIG_CPU_MIPS32 - typedef struct { unsigned long pte_low, pte_high; } pte_t; - #define pte_val(x) ((x).pte_low | ((unsigned long long)(x).pte_high << 32)) - #define __pte(x) ({ pte_t __pte = {(x), ((unsigned long long)(x)) >> 32}; __pte; }) - #else - typedef struct { unsigned long long pte; } pte_t; - #define pte_val(x) ((x).pte) - #define __pte(x) ((pte_t) { (x) } ) - #endif -#else -typedef struct { unsigned long pte; } pte_t; -#define pte_val(x) ((x).pte) -#define __pte(x) ((pte_t) { (x) } ) -#endif -typedef struct page *pgtable_t; - -/* - * For 3-level pagetables we defines these ourselves, for 2-level the - * definitions are supplied by <asm-generic/pgtable-nopmd.h>. - */ -#ifdef CONFIG_64BIT - -typedef struct { unsigned long pmd; } pmd_t; -#define pmd_val(x) ((x).pmd) -#define __pmd(x) ((pmd_t) { (x) } ) - -#endif - -/* - * Right now we don't support 4-level pagetables, so all pud-related - * definitions come from <asm-generic/pgtable-nopud.h>. - */ - -/* - * Finall the top of the hierarchy, the pgd - */ -typedef struct { unsigned long pgd; } pgd_t; -#define pgd_val(x) ((x).pgd) -#define __pgd(x) ((pgd_t) { (x) } ) - -/* - * Manipulate page protection bits - */ -typedef struct { unsigned long pgprot; } pgprot_t; -#define pgprot_val(x) ((x).pgprot) -#define __pgprot(x) ((pgprot_t) { (x) } ) - -/* - * On R4000-style MMUs where a TLB entry is mapping a adjacent even / odd - * pair of pages we only have a single global bit per pair of pages. When - * writing to the TLB make sure we always have the bit set for both pages - * or none. This macro is used to access the `buddy' of the pte we're just - * working on. - */ -#define ptep_buddy(x) ((pte_t *)((unsigned long)(x) ^ sizeof(pte_t))) - -#endif /* !__ASSEMBLY__ */ - -/* - * __pa()/__va() should be used only during mem init. - */ -#ifdef CONFIG_64BIT -#define __pa(x) \ -({ \ - unsigned long __x = (unsigned long)(x); \ - __x < CKSEG0 ? XPHYSADDR(__x) : CPHYSADDR(__x); \ -}) -#else -#define __pa(x) \ - ((unsigned long)(x) - PAGE_OFFSET + PHYS_OFFSET) -#endif -#define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET - PHYS_OFFSET)) -#define __pa_symbol(x) __pa(RELOC_HIDE((unsigned long)(x), 0)) - -#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) - -#ifdef CONFIG_FLATMEM - -#define pfn_valid(pfn) ((pfn) >= ARCH_PFN_OFFSET && (pfn) < max_mapnr) - -#elif defined(CONFIG_SPARSEMEM) - -/* pfn_valid is defined in linux/mmzone.h */ - -#elif defined(CONFIG_NEED_MULTIPLE_NODES) - -#define pfn_valid(pfn) \ -({ \ - unsigned long __pfn = (pfn); \ - int __n = pfn_to_nid(__pfn); \ - ((__n >= 0) ? (__pfn < NODE_DATA(__n)->node_start_pfn + \ - NODE_DATA(__n)->node_spanned_pages) \ - : 0); \ -}) - -#endif - -#define virt_to_page(kaddr) pfn_to_page(PFN_DOWN(virt_to_phys(kaddr))) -#define virt_addr_valid(kaddr) pfn_valid(PFN_DOWN(virt_to_phys(kaddr))) - -#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ - VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) - -#define UNCAC_ADDR(addr) ((addr) - PAGE_OFFSET + UNCAC_BASE) -#define CAC_ADDR(addr) ((addr) - UNCAC_BASE + PAGE_OFFSET) - -#include <asm-generic/memory_model.h> -#include <asm-generic/page.h> - -#endif /* _ASM_PAGE_H */ |
