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5b17e1cd89
The current asm-generic/page.h only contains the get_order function, and asm-generic/uaccess.h only implements unaligned accesses. This renames the file to getorder.h and uaccess-unaligned.h to make room for new page.h and uaccess.h file that will be usable by all simple (e.g. nommu) architectures. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
78 lines
2.2 KiB
C
78 lines
2.2 KiB
C
#ifndef _ASM_PAGE_H
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#define _ASM_PAGE_H
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#include <asm/virtconvert.h>
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#include <asm/mem-layout.h>
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#include <asm/sections.h>
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#include <asm/setup.h>
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#ifndef __ASSEMBLY__
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#define get_user_page(vaddr) __get_free_page(GFP_KERNEL)
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#define free_user_page(page, addr) free_page(addr)
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#define clear_page(pgaddr) memset((pgaddr), 0, PAGE_SIZE)
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#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
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#define clear_user_page(pgaddr, vaddr, page) memset((pgaddr), 0, PAGE_SIZE)
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#define copy_user_page(vto, vfrom, vaddr, topg) memcpy((vto), (vfrom), PAGE_SIZE)
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/*
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* These are used to make use of C type-checking..
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*/
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typedef struct { unsigned long pte; } pte_t;
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typedef struct { unsigned long ste[64];} pmd_t;
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typedef struct { pmd_t pue[1]; } pud_t;
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typedef struct { pud_t pge[1]; } pgd_t;
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typedef struct { unsigned long pgprot; } pgprot_t;
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typedef struct page *pgtable_t;
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#define pte_val(x) ((x).pte)
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#define pmd_val(x) ((x).ste[0])
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#define pud_val(x) ((x).pue[0])
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#define pgd_val(x) ((x).pge[0])
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#define pgprot_val(x) ((x).pgprot)
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#define __pte(x) ((pte_t) { (x) } )
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#define __pmd(x) ((pmd_t) { (x) } )
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#define __pud(x) ((pud_t) { (x) } )
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#define __pgd(x) ((pgd_t) { (x) } )
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#define __pgprot(x) ((pgprot_t) { (x) } )
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#define PTE_MASK PAGE_MASK
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#define devmem_is_allowed(pfn) 1
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#define __pa(vaddr) virt_to_phys((void *) (unsigned long) (vaddr))
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#define __va(paddr) phys_to_virt((unsigned long) (paddr))
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#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
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extern unsigned long max_low_pfn;
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extern unsigned long min_low_pfn;
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extern unsigned long max_pfn;
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#ifdef CONFIG_MMU
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#define pfn_valid(pfn) ((pfn) < max_mapnr)
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#else
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#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
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#define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) < max_low_pfn)
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#endif
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#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
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#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
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#ifdef CONFIG_MMU
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#define VM_DATA_DEFAULT_FLAGS \
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(VM_READ | VM_WRITE | \
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((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
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VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
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#endif
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#endif /* __ASSEMBLY__ */
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#include <asm-generic/memory_model.h>
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#include <asm-generic/getorder.h>
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#endif /* _ASM_PAGE_H */
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