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- #ifndef __ASM_ARC_PAGE_H
- #define __ASM_ARC_PAGE_H
- #include <uapi/asm/page.h>
- #ifndef __ASSEMBLY__
- #define clear_page(paddr) memset((paddr), 0, PAGE_SIZE)
- #define copy_page(to, from) memcpy((to), (from), PAGE_SIZE)
- struct vm_area_struct;
- struct page;
- #define __HAVE_ARCH_COPY_USER_HIGHPAGE
- void copy_user_highpage(struct page *to, struct page *from,
- unsigned long u_vaddr, struct vm_area_struct *vma);
- void clear_user_page(void *to, unsigned long u_vaddr, struct page *page);
- #undef STRICT_MM_TYPECHECKS
- #ifdef STRICT_MM_TYPECHECKS
- typedef struct {
- #ifdef CONFIG_ARC_HAS_PAE40
- unsigned long long pte;
- #else
- unsigned long pte;
- #endif
- } pte_t;
- typedef struct {
- unsigned long pgd;
- } pgd_t;
- typedef struct {
- unsigned long pgprot;
- } pgprot_t;
- #define pte_val(x) ((x).pte)
- #define pgd_val(x) ((x).pgd)
- #define pgprot_val(x) ((x).pgprot)
- #define __pte(x) ((pte_t) { (x) })
- #define __pgd(x) ((pgd_t) { (x) })
- #define __pgprot(x) ((pgprot_t) { (x) })
- #define pte_pgprot(x) __pgprot(pte_val(x))
- #else /* !STRICT_MM_TYPECHECKS */
- #ifdef CONFIG_ARC_HAS_PAE40
- typedef unsigned long long pte_t;
- #else
- typedef unsigned long pte_t;
- #endif
- typedef unsigned long pgd_t;
- typedef unsigned long pgprot_t;
- #define pte_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)
- #define pte_pgprot(x) (x)
- #endif
- typedef pte_t * pgtable_t;
- #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
- #define ARCH_PFN_OFFSET virt_to_pfn(CONFIG_LINUX_RAM_BASE)
- #ifdef CONFIG_FLATMEM
- #define pfn_valid(pfn) (((pfn) - ARCH_PFN_OFFSET) < max_mapnr)
- #endif
- #define __pa(vaddr) ((unsigned long)(vaddr))
- #define __va(paddr) ((void *)((unsigned long)(paddr)))
- #define virt_to_page(kaddr) pfn_to_page(virt_to_pfn(kaddr))
- #define virt_addr_valid(kaddr) pfn_valid(virt_to_pfn(kaddr))
- #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
- #define WANT_PAGE_VIRTUAL 1
- #include <asm-generic/memory_model.h> /* page_to_pfn, pfn_to_page */
- #include <asm-generic/getorder.h>
- #endif /* !__ASSEMBLY__ */
- #endif
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