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Diffstat (limited to 'include/asm-ia64/page.h')
| -rw-r--r-- | include/asm-ia64/page.h | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/include/asm-ia64/page.h b/include/asm-ia64/page.h deleted file mode 100644 index 5f271bc..0000000 --- a/include/asm-ia64/page.h +++ /dev/null @@ -1,223 +0,0 @@ -#ifndef _ASM_IA64_PAGE_H -#define _ASM_IA64_PAGE_H -/* - * Pagetable related stuff. - * - * Copyright (C) 1998, 1999, 2002 Hewlett-Packard Co - * David Mosberger-Tang <davidm@hpl.hp.com> - */ - -#include <asm/intrinsics.h> -#include <asm/types.h> - -/* - * The top three bits of an IA64 address are its Region Number. - * Different regions are assigned to different purposes. - */ -#define RGN_SHIFT (61) -#define RGN_BASE(r) (__IA64_UL_CONST(r)<<RGN_SHIFT) -#define RGN_BITS (RGN_BASE(-1)) - -#define RGN_KERNEL 7 /* Identity mapped region */ -#define RGN_UNCACHED 6 /* Identity mapped I/O region */ -#define RGN_GATE 5 /* Gate page, Kernel text, etc */ -#define RGN_HPAGE 4 /* For Huge TLB pages */ - -/* - * PAGE_SHIFT determines the actual kernel page size. - */ -#if defined(CONFIG_IA64_PAGE_SIZE_4KB) -# define PAGE_SHIFT 12 -#elif defined(CONFIG_IA64_PAGE_SIZE_8KB) -# define PAGE_SHIFT 13 -#elif defined(CONFIG_IA64_PAGE_SIZE_16KB) -# define PAGE_SHIFT 14 -#elif defined(CONFIG_IA64_PAGE_SIZE_64KB) -# define PAGE_SHIFT 16 -#else -# error Unsupported page size! -#endif - -#define PAGE_SIZE (__IA64_UL_CONST(1) << PAGE_SHIFT) -#define PAGE_MASK (~(PAGE_SIZE - 1)) - -#define PERCPU_PAGE_SHIFT 16 /* log2() of max. size of per-CPU area */ -#define PERCPU_PAGE_SIZE (__IA64_UL_CONST(1) << PERCPU_PAGE_SHIFT) - - -#ifdef CONFIG_HUGETLB_PAGE -# define HPAGE_REGION_BASE RGN_BASE(RGN_HPAGE) -# define HPAGE_SHIFT hpage_shift -# define HPAGE_SHIFT_DEFAULT 28 /* check ia64 SDM for architecture supported size */ -# define HPAGE_SIZE (__IA64_UL_CONST(1) << HPAGE_SHIFT) -# define HPAGE_MASK (~(HPAGE_SIZE - 1)) - -# define HAVE_ARCH_HUGETLB_UNMAPPED_AREA -#endif /* CONFIG_HUGETLB_PAGE */ - -#ifdef __ASSEMBLY__ -# define __pa(x) ((x) - PAGE_OFFSET) -# define __va(x) ((x) + PAGE_OFFSET) -#else /* !__ASSEMBLY */ -# define STRICT_MM_TYPECHECKS - -extern void clear_page (void *page); -extern void copy_page (void *to, void *from); - -/* - * clear_user_page() and copy_user_page() can't be inline functions because - * flush_dcache_page() can't be defined until later... - */ -#define clear_user_page(addr, vaddr, page) \ -do { \ - clear_page(addr); \ - flush_dcache_page(page); \ -} while (0) - -#define copy_user_page(to, from, vaddr, page) \ -do { \ - copy_page((to), (from)); \ - flush_dcache_page(page); \ -} while (0) - - -#define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \ -({ \ - struct page *page = alloc_page_vma( \ - GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr); \ - if (page) \ - flush_dcache_page(page); \ - page; \ -}) - -#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE - -#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) - -#ifdef CONFIG_VIRTUAL_MEM_MAP -extern int ia64_pfn_valid (unsigned long pfn); -#else -# define ia64_pfn_valid(pfn) 1 -#endif - -#ifdef CONFIG_VIRTUAL_MEM_MAP -extern struct page *vmem_map; -#ifdef CONFIG_DISCONTIGMEM -# define page_to_pfn(page) ((unsigned long) (page - vmem_map)) -# define pfn_to_page(pfn) (vmem_map + (pfn)) -#else -# include <asm-generic/memory_model.h> -#endif -#else -# include <asm-generic/memory_model.h> -#endif - -#ifdef CONFIG_FLATMEM -# define pfn_valid(pfn) (((pfn) < max_mapnr) && ia64_pfn_valid(pfn)) -#elif defined(CONFIG_DISCONTIGMEM) -extern unsigned long min_low_pfn; -extern unsigned long max_low_pfn; -# define pfn_valid(pfn) (((pfn) >= min_low_pfn) && ((pfn) < max_low_pfn) && ia64_pfn_valid(pfn)) -#endif - -#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) -#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) -#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) - -typedef union ia64_va { - struct { - unsigned long off : 61; /* intra-region offset */ - unsigned long reg : 3; /* region number */ - } f; - unsigned long l; - void *p; -} ia64_va; - -/* - * Note: These macros depend on the fact that PAGE_OFFSET has all - * region bits set to 1 and all other bits set to zero. They are - * expressed in this way to ensure they result in a single "dep" - * instruction. - */ -#define __pa(x) ({ia64_va _v; _v.l = (long) (x); _v.f.reg = 0; _v.l;}) -#define __va(x) ({ia64_va _v; _v.l = (long) (x); _v.f.reg = -1; _v.p;}) - -#define REGION_NUMBER(x) ({ia64_va _v; _v.l = (long) (x); _v.f.reg;}) -#define REGION_OFFSET(x) ({ia64_va _v; _v.l = (long) (x); _v.f.off;}) - -#ifdef CONFIG_HUGETLB_PAGE -# define htlbpage_to_page(x) (((unsigned long) REGION_NUMBER(x) << 61) \ - | (REGION_OFFSET(x) >> (HPAGE_SHIFT-PAGE_SHIFT))) -# define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) -extern unsigned int hpage_shift; -#endif - -static __inline__ int -get_order (unsigned long size) -{ - long double d = size - 1; - long order; - - order = ia64_getf_exp(d); - order = order - PAGE_SHIFT - 0xffff + 1; - if (order < 0) - order = 0; - return order; -} - -#endif /* !__ASSEMBLY__ */ - -#ifdef STRICT_MM_TYPECHECKS - /* - * These are used to make use of C type-checking.. - */ - typedef struct { unsigned long pte; } pte_t; - typedef struct { unsigned long pmd; } pmd_t; -#ifdef CONFIG_PGTABLE_4 - typedef struct { unsigned long pud; } pud_t; -#endif - typedef struct { unsigned long pgd; } pgd_t; - typedef struct { unsigned long pgprot; } pgprot_t; - typedef struct page *pgtable_t; - -# define pte_val(x) ((x).pte) -# define pmd_val(x) ((x).pmd) -#ifdef CONFIG_PGTABLE_4 -# define pud_val(x) ((x).pud) -#endif -# define pgd_val(x) ((x).pgd) -# define pgprot_val(x) ((x).pgprot) - -# define __pte(x) ((pte_t) { (x) } ) -# define __pgprot(x) ((pgprot_t) { (x) } ) - -#else /* !STRICT_MM_TYPECHECKS */ - /* - * .. while these make it easier on the compiler - */ -# ifndef __ASSEMBLY__ - typedef unsigned long pte_t; - typedef unsigned long pmd_t; - typedef unsigned long pgd_t; - typedef unsigned long pgprot_t; - typedef struct page *pgtable_t; -# endif - -# define pte_val(x) (x) -# define pmd_val(x) (x) -# define pgd_val(x) (x) -# define pgprot_val(x) (x) - -# define __pte(x) (x) -# define __pgd(x) (x) -# define __pgprot(x) (x) -#endif /* !STRICT_MM_TYPECHECKS */ - -#define PAGE_OFFSET RGN_BASE(RGN_KERNEL) - -#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \ - VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC | \ - (((current->personality & READ_IMPLIES_EXEC) != 0) \ - ? VM_EXEC : 0)) - -#endif /* _ASM_IA64_PAGE_H */ |