From: Jeremy Fitzhardinge Date: Mon, 9 Feb 2009 06:52:14 +0000 (-0800) Subject: x86: create _types.h counterparts for page*.h X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=51c78eb;p=linux-beck.git x86: create _types.h counterparts for page*.h Signed-off-by: Jeremy Fitzhardinge --- diff --git a/arch/x86/include/asm/page.h b/arch/x86/include/asm/page.h index 40226999cbf8..3b2d2af951c3 100644 --- a/arch/x86/include/asm/page.h +++ b/arch/x86/include/asm/page.h @@ -1,42 +1,9 @@ #ifndef _ASM_X86_PAGE_H #define _ASM_X86_PAGE_H -#include - -/* PAGE_SHIFT determines the page size */ -#define PAGE_SHIFT 12 -#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) -#define PAGE_MASK (~(PAGE_SIZE-1)) - #ifdef __KERNEL__ -#define __PHYSICAL_MASK ((phys_addr_t)(1ULL << __PHYSICAL_MASK_SHIFT) - 1) -#define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1) - -/* Cast PAGE_MASK to a signed type so that it is sign-extended if - virtual addresses are 32-bits but physical addresses are larger - (ie, 32-bit PAE). */ -#define PHYSICAL_PAGE_MASK (((signed long)PAGE_MASK) & __PHYSICAL_MASK) - -/* PTE_PFN_MASK extracts the PFN from a (pte|pmd|pud|pgd)val_t */ -#define PTE_PFN_MASK ((pteval_t)PHYSICAL_PAGE_MASK) - -/* PTE_FLAGS_MASK extracts the flags from a (pte|pmd|pud|pgd)val_t */ -#define PTE_FLAGS_MASK (~PTE_PFN_MASK) - -#define PMD_PAGE_SIZE (_AC(1, UL) << PMD_SHIFT) -#define PMD_PAGE_MASK (~(PMD_PAGE_SIZE-1)) - -#define HPAGE_SHIFT PMD_SHIFT -#define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) -#define HPAGE_MASK (~(HPAGE_SIZE - 1)) -#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) - -#define HUGE_MAX_HSTATE 2 - -#ifndef __ASSEMBLY__ -#include -#endif +#include #ifdef CONFIG_X86_64 #include @@ -44,39 +11,18 @@ #include #endif /* CONFIG_X86_64 */ -#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) - -#define VM_DATA_DEFAULT_FLAGS \ - (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \ - VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) - - #ifndef __ASSEMBLY__ -typedef struct { pgdval_t pgd; } pgd_t; -typedef struct { pgprotval_t pgprot; } pgprot_t; - -extern int page_is_ram(unsigned long pagenr); -extern int pagerange_is_ram(unsigned long start, unsigned long end); -extern int devmem_is_allowed(unsigned long pagenr); -extern void map_devmem(unsigned long pfn, unsigned long size, - pgprot_t vma_prot); -extern void unmap_devmem(unsigned long pfn, unsigned long size, - pgprot_t vma_prot); - -extern unsigned long max_low_pfn_mapped; -extern unsigned long max_pfn_mapped; - struct page; static inline void clear_user_page(void *page, unsigned long vaddr, - struct page *pg) + struct page *pg) { clear_page(page); } static inline void copy_user_page(void *to, void *from, unsigned long vaddr, - struct page *topage) + struct page *topage) { copy_page(to, from); } @@ -102,8 +48,6 @@ static inline pgdval_t pgd_flags(pgd_t pgd) #if PAGETABLE_LEVELS >= 3 #if PAGETABLE_LEVELS == 4 -typedef struct { pudval_t pud; } pud_t; - static inline pud_t native_make_pud(pmdval_t val) { return (pud_t) { val }; @@ -127,8 +71,6 @@ static inline pudval_t pud_flags(pud_t pud) return native_pud_val(pud) & PTE_FLAGS_MASK; } -typedef struct { pmdval_t pmd; } pmd_t; - static inline pmd_t native_make_pmd(pmdval_t val) { return (pmd_t) { val }; diff --git a/arch/x86/include/asm/page_32.h b/arch/x86/include/asm/page_32.h index bcde0d7b4325..b3f0bf79e843 100644 --- a/arch/x86/include/asm/page_32.h +++ b/arch/x86/include/asm/page_32.h @@ -1,82 +1,12 @@ #ifndef _ASM_X86_PAGE_32_H #define _ASM_X86_PAGE_32_H -/* - * This handles the memory map. - * - * A __PAGE_OFFSET of 0xC0000000 means that the kernel has - * a virtual address space of one gigabyte, which limits the - * amount of physical memory you can use to about 950MB. - * - * If you want more physical memory than this then see the CONFIG_HIGHMEM4G - * and CONFIG_HIGHMEM64G options in the kernel configuration. - */ -#define __PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL) - -#ifdef CONFIG_4KSTACKS -#define THREAD_ORDER 0 -#else -#define THREAD_ORDER 1 -#endif -#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER) - -#define STACKFAULT_STACK 0 -#define DOUBLEFAULT_STACK 1 -#define NMI_STACK 0 -#define DEBUG_STACK 0 -#define MCE_STACK 0 -#define N_EXCEPTION_STACKS 1 - -#ifdef CONFIG_X86_PAE -/* 44=32+12, the limit we can fit into an unsigned long pfn */ -#define __PHYSICAL_MASK_SHIFT 44 -#define __VIRTUAL_MASK_SHIFT 32 -#define PAGETABLE_LEVELS 3 - -#ifndef __ASSEMBLY__ -typedef u64 pteval_t; -typedef u64 pmdval_t; -typedef u64 pudval_t; -typedef u64 pgdval_t; -typedef u64 pgprotval_t; - -typedef union { - struct { - unsigned long pte_low, pte_high; - }; - pteval_t pte; -} pte_t; -#endif /* __ASSEMBLY__ - */ -#else /* !CONFIG_X86_PAE */ -#define __PHYSICAL_MASK_SHIFT 32 -#define __VIRTUAL_MASK_SHIFT 32 -#define PAGETABLE_LEVELS 2 - -#ifndef __ASSEMBLY__ -typedef unsigned long pteval_t; -typedef unsigned long pmdval_t; -typedef unsigned long pudval_t; -typedef unsigned long pgdval_t; -typedef unsigned long pgprotval_t; - -typedef union { - pteval_t pte; - pteval_t pte_low; -} pte_t; - -#endif /* __ASSEMBLY__ */ -#endif /* CONFIG_X86_PAE */ - -#ifndef __ASSEMBLY__ -typedef struct page *pgtable_t; -#endif +#include #ifdef CONFIG_HUGETLB_PAGE #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA #endif -#ifndef __ASSEMBLY__ #define __phys_addr_nodebug(x) ((x) - PAGE_OFFSET) #ifdef CONFIG_DEBUG_VIRTUAL extern unsigned long __phys_addr(unsigned long); @@ -89,22 +19,7 @@ extern unsigned long __phys_addr(unsigned long); #define pfn_valid(pfn) ((pfn) < max_mapnr) #endif /* CONFIG_FLATMEM */ -extern int nx_enabled; - -/* - * This much address space is reserved for vmalloc() and iomap() - * as well as fixmap mappings. - */ -extern unsigned int __VMALLOC_RESERVE; -extern int sysctl_legacy_va_layout; - -extern void find_low_pfn_range(void); -extern unsigned long init_memory_mapping(unsigned long start, - unsigned long end); -extern void initmem_init(unsigned long, unsigned long); -extern void free_initmem(void); -extern void setup_bootmem_allocator(void); - +#ifndef __ASSEMBLY__ #ifdef CONFIG_X86_USE_3DNOW #include diff --git a/arch/x86/include/asm/page_32_types.h b/arch/x86/include/asm/page_32_types.h new file mode 100644 index 000000000000..b7b5402d7ab7 --- /dev/null +++ b/arch/x86/include/asm/page_32_types.h @@ -0,0 +1,90 @@ +#ifndef _ASM_X86_PAGE_32_DEFS_H +#define _ASM_X86_PAGE_32_DEFS_H + +#include + +/* + * This handles the memory map. + * + * A __PAGE_OFFSET of 0xC0000000 means that the kernel has + * a virtual address space of one gigabyte, which limits the + * amount of physical memory you can use to about 950MB. + * + * If you want more physical memory than this then see the CONFIG_HIGHMEM4G + * and CONFIG_HIGHMEM64G options in the kernel configuration. + */ +#define __PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL) + +#ifdef CONFIG_4KSTACKS +#define THREAD_ORDER 0 +#else +#define THREAD_ORDER 1 +#endif +#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER) + +#define STACKFAULT_STACK 0 +#define DOUBLEFAULT_STACK 1 +#define NMI_STACK 0 +#define DEBUG_STACK 0 +#define MCE_STACK 0 +#define N_EXCEPTION_STACKS 1 + +#ifdef CONFIG_X86_PAE +/* 44=32+12, the limit we can fit into an unsigned long pfn */ +#define __PHYSICAL_MASK_SHIFT 44 +#define __VIRTUAL_MASK_SHIFT 32 +#define PAGETABLE_LEVELS 3 + +#else /* !CONFIG_X86_PAE */ +#define __PHYSICAL_MASK_SHIFT 32 +#define __VIRTUAL_MASK_SHIFT 32 +#define PAGETABLE_LEVELS 2 +#endif /* CONFIG_X86_PAE */ + +#ifndef __ASSEMBLY__ + +#ifdef CONFIG_X86_PAE +typedef u64 pteval_t; +typedef u64 pmdval_t; +typedef u64 pudval_t; +typedef u64 pgdval_t; +typedef u64 pgprotval_t; + +typedef union { + struct { + unsigned long pte_low, pte_high; + }; + pteval_t pte; +} pte_t; +#else /* !CONFIG_X86_PAE */ +typedef unsigned long pteval_t; +typedef unsigned long pmdval_t; +typedef unsigned long pudval_t; +typedef unsigned long pgdval_t; +typedef unsigned long pgprotval_t; + +typedef union { + pteval_t pte; + pteval_t pte_low; +} pte_t; +#endif /* CONFIG_X86_PAE */ + +extern int nx_enabled; + +/* + * This much address space is reserved for vmalloc() and iomap() + * as well as fixmap mappings. + */ +extern unsigned int __VMALLOC_RESERVE; +extern int sysctl_legacy_va_layout; + +extern void find_low_pfn_range(void); +extern unsigned long init_memory_mapping(unsigned long start, + unsigned long end); +extern void initmem_init(unsigned long, unsigned long); +extern void free_initmem(void); +extern void setup_bootmem_allocator(void); + +#endif /* !__ASSEMBLY__ */ + +#endif /* _ASM_X86_PAGE_32_DEFS_H */ diff --git a/arch/x86/include/asm/page_64.h b/arch/x86/include/asm/page_64.h index e27fdbe5f9e4..072694ed81a5 100644 --- a/arch/x86/include/asm/page_64.h +++ b/arch/x86/include/asm/page_64.h @@ -1,105 +1,6 @@ #ifndef _ASM_X86_PAGE_64_H #define _ASM_X86_PAGE_64_H -#define PAGETABLE_LEVELS 4 - -#define THREAD_ORDER 1 -#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER) -#define CURRENT_MASK (~(THREAD_SIZE - 1)) - -#define EXCEPTION_STACK_ORDER 0 -#define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER) - -#define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1) -#define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER) - -#define IRQ_STACK_ORDER 2 -#define IRQ_STACK_SIZE (PAGE_SIZE << IRQ_STACK_ORDER) - -#define STACKFAULT_STACK 1 -#define DOUBLEFAULT_STACK 2 -#define NMI_STACK 3 -#define DEBUG_STACK 4 -#define MCE_STACK 5 -#define N_EXCEPTION_STACKS 5 /* hw limit: 7 */ - -#define PUD_PAGE_SIZE (_AC(1, UL) << PUD_SHIFT) -#define PUD_PAGE_MASK (~(PUD_PAGE_SIZE-1)) - -/* - * Set __PAGE_OFFSET to the most negative possible address + - * PGDIR_SIZE*16 (pgd slot 272). The gap is to allow a space for a - * hypervisor to fit. Choosing 16 slots here is arbitrary, but it's - * what Xen requires. - */ -#define __PAGE_OFFSET _AC(0xffff880000000000, UL) - -#define __PHYSICAL_START CONFIG_PHYSICAL_START -#define __KERNEL_ALIGN 0x200000 - -/* - * Make sure kernel is aligned to 2MB address. Catching it at compile - * time is better. Change your config file and compile the kernel - * for a 2MB aligned address (CONFIG_PHYSICAL_START) - */ -#if (CONFIG_PHYSICAL_START % __KERNEL_ALIGN) != 0 -#error "CONFIG_PHYSICAL_START must be a multiple of 2MB" -#endif - -#define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START) -#define __START_KERNEL_map _AC(0xffffffff80000000, UL) - -/* See Documentation/x86_64/mm.txt for a description of the memory map. */ -#define __PHYSICAL_MASK_SHIFT 46 -#define __VIRTUAL_MASK_SHIFT 48 - -/* - * Kernel image size is limited to 512 MB (see level2_kernel_pgt in - * arch/x86/kernel/head_64.S), and it is mapped here: - */ -#define KERNEL_IMAGE_SIZE (512 * 1024 * 1024) -#define KERNEL_IMAGE_START _AC(0xffffffff80000000, UL) - -#ifndef __ASSEMBLY__ -void clear_page(void *page); -void copy_page(void *to, void *from); - -/* duplicated to the one in bootmem.h */ -extern unsigned long max_pfn; -extern unsigned long phys_base; - -extern unsigned long __phys_addr(unsigned long); -#define __phys_reloc_hide(x) (x) - -/* - * These are used to make use of C type-checking.. - */ -typedef unsigned long pteval_t; -typedef unsigned long pmdval_t; -typedef unsigned long pudval_t; -typedef unsigned long pgdval_t; -typedef unsigned long pgprotval_t; - -typedef struct page *pgtable_t; - -typedef struct { pteval_t pte; } pte_t; - -#define vmemmap ((struct page *)VMEMMAP_START) - -extern unsigned long init_memory_mapping(unsigned long start, - unsigned long end); - -extern void initmem_init(unsigned long start_pfn, unsigned long end_pfn); -extern void free_initmem(void); - -extern void init_extra_mapping_uc(unsigned long phys, unsigned long size); -extern void init_extra_mapping_wb(unsigned long phys, unsigned long size); - -#endif /* !__ASSEMBLY__ */ - -#ifdef CONFIG_FLATMEM -#define pfn_valid(pfn) ((pfn) < max_pfn) -#endif - +#include #endif /* _ASM_X86_PAGE_64_H */ diff --git a/arch/x86/include/asm/page_64.h.rej b/arch/x86/include/asm/page_64.h.rej new file mode 100644 index 000000000000..9b1807f18596 --- /dev/null +++ b/arch/x86/include/asm/page_64.h.rej @@ -0,0 +1,114 @@ +*************** +*** 1,105 **** + #ifndef _ASM_X86_PAGE_64_H + #define _ASM_X86_PAGE_64_H + +- #define PAGETABLE_LEVELS 4 +- +- #define THREAD_ORDER 1 +- #define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER) +- #define CURRENT_MASK (~(THREAD_SIZE - 1)) +- +- #define EXCEPTION_STACK_ORDER 0 +- #define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER) +- +- #define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1) +- #define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER) +- +- #define IRQSTACK_ORDER 2 +- #define IRQSTACKSIZE (PAGE_SIZE << IRQSTACK_ORDER) +- +- #define STACKFAULT_STACK 1 +- #define DOUBLEFAULT_STACK 2 +- #define NMI_STACK 3 +- #define DEBUG_STACK 4 +- #define MCE_STACK 5 +- #define N_EXCEPTION_STACKS 5 /* hw limit: 7 */ +- +- #define PUD_PAGE_SIZE (_AC(1, UL) << PUD_SHIFT) +- #define PUD_PAGE_MASK (~(PUD_PAGE_SIZE-1)) +- +- /* +- * Set __PAGE_OFFSET to the most negative possible address + +- * PGDIR_SIZE*16 (pgd slot 272). The gap is to allow a space for a +- * hypervisor to fit. Choosing 16 slots here is arbitrary, but it's +- * what Xen requires. +- */ +- #define __PAGE_OFFSET _AC(0xffff880000000000, UL) +- +- #define __PHYSICAL_START CONFIG_PHYSICAL_START +- #define __KERNEL_ALIGN 0x200000 +- +- /* +- * Make sure kernel is aligned to 2MB address. Catching it at compile +- * time is better. Change your config file and compile the kernel +- * for a 2MB aligned address (CONFIG_PHYSICAL_START) +- */ +- #if (CONFIG_PHYSICAL_START % __KERNEL_ALIGN) != 0 +- #error "CONFIG_PHYSICAL_START must be a multiple of 2MB" +- #endif +- +- #define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START) +- #define __START_KERNEL_map _AC(0xffffffff80000000, UL) +- +- /* See Documentation/x86_64/mm.txt for a description of the memory map. */ +- #define __PHYSICAL_MASK_SHIFT 46 +- #define __VIRTUAL_MASK_SHIFT 48 +- +- /* +- * Kernel image size is limited to 512 MB (see level2_kernel_pgt in +- * arch/x86/kernel/head_64.S), and it is mapped here: +- */ +- #define KERNEL_IMAGE_SIZE (512 * 1024 * 1024) +- #define KERNEL_IMAGE_START _AC(0xffffffff80000000, UL) +- +- #ifndef __ASSEMBLY__ +- void clear_page(void *page); +- void copy_page(void *to, void *from); +- +- /* duplicated to the one in bootmem.h */ +- extern unsigned long max_pfn; +- extern unsigned long phys_base; +- +- extern unsigned long __phys_addr(unsigned long); +- #define __phys_reloc_hide(x) (x) +- +- /* +- * These are used to make use of C type-checking.. +- */ +- typedef unsigned long pteval_t; +- typedef unsigned long pmdval_t; +- typedef unsigned long pudval_t; +- typedef unsigned long pgdval_t; +- typedef unsigned long pgprotval_t; +- +- typedef struct page *pgtable_t; +- +- typedef struct { pteval_t pte; } pte_t; +- +- #define vmemmap ((struct page *)VMEMMAP_START) +- +- extern unsigned long init_memory_mapping(unsigned long start, +- unsigned long end); +- +- extern void initmem_init(unsigned long start_pfn, unsigned long end_pfn); +- extern void free_initmem(void); +- +- extern void init_extra_mapping_uc(unsigned long phys, unsigned long size); +- extern void init_extra_mapping_wb(unsigned long phys, unsigned long size); +- +- #endif /* !__ASSEMBLY__ */ +- +- #ifdef CONFIG_FLATMEM +- #define pfn_valid(pfn) ((pfn) < max_pfn) +- #endif +- + + #endif /* _ASM_X86_PAGE_64_H */ +--- 1,6 ---- + #ifndef _ASM_X86_PAGE_64_H + #define _ASM_X86_PAGE_64_H + ++ #include + + #endif /* _ASM_X86_PAGE_64_H */ diff --git a/arch/x86/include/asm/page_64_types.h b/arch/x86/include/asm/page_64_types.h new file mode 100644 index 000000000000..d00cd3880822 --- /dev/null +++ b/arch/x86/include/asm/page_64_types.h @@ -0,0 +1,102 @@ +#ifndef _ASM_X86_PAGE_64_DEFS_H +#define _ASM_X86_PAGE_64_DEFS_H + +#define PAGETABLE_LEVELS 4 + +#define THREAD_ORDER 1 +#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER) +#define CURRENT_MASK (~(THREAD_SIZE - 1)) + +#define EXCEPTION_STACK_ORDER 0 +#define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER) + +#define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1) +#define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER) + +#define IRQ_STACK_ORDER 2 +#define IRQ_STACK_SIZE (PAGE_SIZE << IRQ_STACK_ORDER) + +#define STACKFAULT_STACK 1 +#define DOUBLEFAULT_STACK 2 +#define NMI_STACK 3 +#define DEBUG_STACK 4 +#define MCE_STACK 5 +#define N_EXCEPTION_STACKS 5 /* hw limit: 7 */ + +#define PUD_PAGE_SIZE (_AC(1, UL) << PUD_SHIFT) +#define PUD_PAGE_MASK (~(PUD_PAGE_SIZE-1)) + +/* + * Set __PAGE_OFFSET to the most negative possible address + + * PGDIR_SIZE*16 (pgd slot 272). The gap is to allow a space for a + * hypervisor to fit. Choosing 16 slots here is arbitrary, but it's + * what Xen requires. + */ +#define __PAGE_OFFSET _AC(0xffff880000000000, UL) + +#define __PHYSICAL_START CONFIG_PHYSICAL_START +#define __KERNEL_ALIGN 0x200000 + +/* + * Make sure kernel is aligned to 2MB address. Catching it at compile + * time is better. Change your config file and compile the kernel + * for a 2MB aligned address (CONFIG_PHYSICAL_START) + */ +#if (CONFIG_PHYSICAL_START % __KERNEL_ALIGN) != 0 +#error "CONFIG_PHYSICAL_START must be a multiple of 2MB" +#endif + +#define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START) +#define __START_KERNEL_map _AC(0xffffffff80000000, UL) + +/* See Documentation/x86_64/mm.txt for a description of the memory map. */ +#define __PHYSICAL_MASK_SHIFT 46 +#define __VIRTUAL_MASK_SHIFT 48 + +/* + * Kernel image size is limited to 512 MB (see level2_kernel_pgt in + * arch/x86/kernel/head_64.S), and it is mapped here: + */ +#define KERNEL_IMAGE_SIZE (512 * 1024 * 1024) +#define KERNEL_IMAGE_START _AC(0xffffffff80000000, UL) + +#ifndef __ASSEMBLY__ +void clear_page(void *page); +void copy_page(void *to, void *from); + +/* duplicated to the one in bootmem.h */ +extern unsigned long max_pfn; +extern unsigned long phys_base; + +extern unsigned long __phys_addr(unsigned long); +#define __phys_reloc_hide(x) (x) + +/* + * These are used to make use of C type-checking.. + */ +typedef unsigned long pteval_t; +typedef unsigned long pmdval_t; +typedef unsigned long pudval_t; +typedef unsigned long pgdval_t; +typedef unsigned long pgprotval_t; + +typedef struct { pteval_t pte; } pte_t; + +#define vmemmap ((struct page *)VMEMMAP_START) + +extern unsigned long init_memory_mapping(unsigned long start, + unsigned long end); + +extern void initmem_init(unsigned long start_pfn, unsigned long end_pfn); +extern void free_initmem(void); + +extern void init_extra_mapping_uc(unsigned long phys, unsigned long size); +extern void init_extra_mapping_wb(unsigned long phys, unsigned long size); + +#endif /* !__ASSEMBLY__ */ + +#ifdef CONFIG_FLATMEM +#define pfn_valid(pfn) ((pfn) < max_pfn) +#endif + +#endif /* _ASM_X86_PAGE_64_DEFS_H */ diff --git a/arch/x86/include/asm/page_types.h b/arch/x86/include/asm/page_types.h new file mode 100644 index 000000000000..65787ad4c59f --- /dev/null +++ b/arch/x86/include/asm/page_types.h @@ -0,0 +1,77 @@ +#ifndef _ASM_X86_PAGE_DEFS_H +#define _ASM_X86_PAGE_DEFS_H + +#include + +/* PAGE_SHIFT determines the page size */ +#define PAGE_SHIFT 12 +#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) +#define PAGE_MASK (~(PAGE_SIZE-1)) + +#define __PHYSICAL_MASK ((phys_addr_t)(1ULL << __PHYSICAL_MASK_SHIFT) - 1) +#define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1) + +/* Cast PAGE_MASK to a signed type so that it is sign-extended if + virtual addresses are 32-bits but physical addresses are larger + (ie, 32-bit PAE). */ +#define PHYSICAL_PAGE_MASK (((signed long)PAGE_MASK) & __PHYSICAL_MASK) + +/* PTE_PFN_MASK extracts the PFN from a (pte|pmd|pud|pgd)val_t */ +#define PTE_PFN_MASK ((pteval_t)PHYSICAL_PAGE_MASK) + +/* PTE_FLAGS_MASK extracts the flags from a (pte|pmd|pud|pgd)val_t */ +#define PTE_FLAGS_MASK (~PTE_PFN_MASK) + +#define PMD_PAGE_SIZE (_AC(1, UL) << PMD_SHIFT) +#define PMD_PAGE_MASK (~(PMD_PAGE_SIZE-1)) + +#define HPAGE_SHIFT PMD_SHIFT +#define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) +#define HPAGE_MASK (~(HPAGE_SIZE - 1)) +#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) + +#define HUGE_MAX_HSTATE 2 + +#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) + +#define VM_DATA_DEFAULT_FLAGS \ + (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \ + VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) + +#ifdef CONFIG_X86_64 +#include +#else +#include +#endif /* CONFIG_X86_64 */ + +#ifndef __ASSEMBLY__ + +#include + +typedef struct { pgdval_t pgd; } pgd_t; +typedef struct { pgprotval_t pgprot; } pgprot_t; + +#if PAGETABLE_LEVELS > 3 +typedef struct { pudval_t pud; } pud_t; +#endif + +#if PAGETABLE_LEVELS > 2 +typedef struct { pmdval_t pmd; } pmd_t; +#endif + +typedef struct page *pgtable_t; + +extern int page_is_ram(unsigned long pagenr); +extern int pagerange_is_ram(unsigned long start, unsigned long end); +extern int devmem_is_allowed(unsigned long pagenr); +extern void map_devmem(unsigned long pfn, unsigned long size, + pgprot_t vma_prot); +extern void unmap_devmem(unsigned long pfn, unsigned long size, + pgprot_t vma_prot); + +extern unsigned long max_low_pfn_mapped; +extern unsigned long max_pfn_mapped; + +#endif /* !__ASSEMBLY__ */ + +#endif /* _ASM_X86_PAGE_DEFS_H */