101 lines
2.5 KiB
C
101 lines
2.5 KiB
C
#ifndef _ALPHA_PAGE_H
|
|
#define _ALPHA_PAGE_H
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <asm/pal.h>
|
|
|
|
/* PAGE_SHIFT determines the page size */
|
|
#define PAGE_SHIFT 13
|
|
#define PAGE_SIZE (1UL << PAGE_SHIFT)
|
|
#define PAGE_MASK (~(PAGE_SIZE-1))
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#define STRICT_MM_TYPECHECKS
|
|
|
|
extern void clear_page(void *page);
|
|
#define clear_user_page(page, vaddr, pg) clear_page(page)
|
|
|
|
#define alloc_zeroed_user_highpage(vma, vaddr) alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vma, vmaddr)
|
|
#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
|
|
|
|
extern void copy_page(void * _to, void * _from);
|
|
#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
|
|
|
|
#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;
|
|
typedef struct { unsigned long pgd; } pgd_t;
|
|
typedef struct { unsigned long pgprot; } pgprot_t;
|
|
|
|
#define pte_val(x) ((x).pte)
|
|
#define pmd_val(x) ((x).pmd)
|
|
#define pgd_val(x) ((x).pgd)
|
|
#define pgprot_val(x) ((x).pgprot)
|
|
|
|
#define __pte(x) ((pte_t) { (x) } )
|
|
#define __pmd(x) ((pmd_t) { (x) } )
|
|
#define __pgd(x) ((pgd_t) { (x) } )
|
|
#define __pgprot(x) ((pgprot_t) { (x) } )
|
|
|
|
#else
|
|
/*
|
|
* .. while these make it easier on the compiler
|
|
*/
|
|
typedef unsigned long pte_t;
|
|
typedef unsigned long pmd_t;
|
|
typedef unsigned long pgd_t;
|
|
typedef unsigned long pgprot_t;
|
|
|
|
#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 */
|
|
|
|
#ifdef USE_48_BIT_KSEG
|
|
#define PAGE_OFFSET 0xffff800000000000UL
|
|
#else
|
|
#define PAGE_OFFSET 0xfffffc0000000000UL
|
|
#endif
|
|
|
|
#else
|
|
|
|
#ifdef USE_48_BIT_KSEG
|
|
#define PAGE_OFFSET 0xffff800000000000
|
|
#else
|
|
#define PAGE_OFFSET 0xfffffc0000000000
|
|
#endif
|
|
|
|
#endif /* !__ASSEMBLY__ */
|
|
|
|
/* to align the pointer to the (next) page boundary */
|
|
#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
|
|
|
|
#define __pa(x) ((unsigned long) (x) - PAGE_OFFSET)
|
|
#define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET))
|
|
#ifndef CONFIG_DISCONTIGMEM
|
|
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
|
|
|
|
#define pfn_valid(pfn) ((pfn) < max_mapnr)
|
|
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
|
|
#endif /* CONFIG_DISCONTIGMEM */
|
|
|
|
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
|
|
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
|
|
|
|
#include <asm-generic/memory_model.h>
|
|
#include <asm-generic/page.h>
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _ALPHA_PAGE_H */
|