forked from Minki/linux
4e0b6ca9da
They are not symmetric with each other, neither are used in real world (can not be found by grep command in source code root directory), so remove them. Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
101 lines
2.4 KiB
C
101 lines
2.4 KiB
C
#ifndef __ASM_GENERIC_PAGE_H
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#define __ASM_GENERIC_PAGE_H
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/*
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* Generic page.h implementation, for NOMMU architectures.
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* This provides the dummy definitions for the memory management.
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*/
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#ifdef CONFIG_MMU
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#error need to prove a real asm/page.h
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#endif
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/* PAGE_SHIFT determines the page size */
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#define PAGE_SHIFT 12
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#ifdef __ASSEMBLY__
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#define PAGE_SIZE (1 << PAGE_SHIFT)
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#else
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#define PAGE_SIZE (1UL << PAGE_SHIFT)
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#endif
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#define PAGE_MASK (~(PAGE_SIZE-1))
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#include <asm/setup.h>
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#ifndef __ASSEMBLY__
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#define clear_page(page) memset((page), 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(page, vaddr, pg) clear_page(page)
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#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
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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 {
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unsigned long pte;
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} pte_t;
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typedef struct {
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unsigned long pmd[16];
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} pmd_t;
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typedef struct {
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unsigned long pgd;
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} pgd_t;
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typedef struct {
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unsigned long pgprot;
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} 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)->pmd[0])
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#define pgd_val(x) ((x).pgd)
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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 __pgd(x) ((pgd_t) { (x) } )
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#define __pgprot(x) ((pgprot_t) { (x) } )
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extern unsigned long memory_start;
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extern unsigned long memory_end;
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#endif /* !__ASSEMBLY__ */
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#ifdef CONFIG_KERNEL_RAM_BASE_ADDRESS
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#define PAGE_OFFSET (CONFIG_KERNEL_RAM_BASE_ADDRESS)
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#else
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#define PAGE_OFFSET (0)
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#endif
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#ifndef ARCH_PFN_OFFSET
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#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
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#endif
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#ifndef __ASSEMBLY__
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#define __va(x) ((void *)((unsigned long) (x)))
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#define __pa(x) ((unsigned long) (x))
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#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
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#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
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#define virt_to_page(addr) pfn_to_page(virt_to_pfn(addr))
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#define page_to_virt(page) pfn_to_virt(page_to_pfn(page))
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#ifndef page_to_phys
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#define page_to_phys(page) ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT)
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#endif
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#define pfn_valid(pfn) ((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr)
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#define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
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((void *)(kaddr) < (void *)memory_end))
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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_GENERIC_PAGE_H */
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