42 *l4( (  fB- -_I|+ //* SPDX-License-Identifier: GPL-2.0 */ #ifndef __ASM_GENERIC_PAGE_H #define __ASM_GENERIC_PAGE_H /* * Generic page.h implementation, for NOMMU architectures. * This provides the dummy definitions for the memory management. */ #ifdef CONFIG_MMU #error need to provide a real asm/page.h #endif /* PAGE_SHIFT determines the page size */ #define PAGE_SHIFT 12 #ifdef __ASSEMBLY__ #define PAGE_SIZE (1 << PAGE_SHIFT) #else #define PAGE_SIZE (1UL << PAGE_SHIFT) #endif #define PAGE_MASK (~(PAGE_SIZE-1)) #include #ifndef __ASSEMBLY__ #define clear_page(page) memset((page), 0, PAGE_SIZE) #define copy_page(to,from) memcpy((to), (from), PAGE_SIZE) #define clear_user_page(page, vaddr, pg) clear_page(page) #define copy_user_page(to, from, vaddr, pg) copy_page(to, from) /* * These are used to make use of C type-checking.. */ typedef struct { unsigned long pte; } pte_t; typedef struct { unsigned long pmd[16]; } pmd_t; typedef struct { unsigned long pgd; } pgd_t; typedef struct { unsigned long pgprot; } pgprot_t; typedef struct page *pgtable_t; #define pte_val(x) ((x).pte) #define pmd_val(x) ((&x)->pmd[0]) #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) } ) extern unsigned long memory_start; extern unsigned long memory_end; #endif /* !__ASSEMBLY__ */ #define PAGE_OFFSET (0) #ifndef ARCH_PFN_OFFSET #define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT) #endif #ifndef __ASSEMBLY__ #define __va(x) ((void *)((unsigned long) (x))) #define __pa(x) ((unsigned long) (x)) #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) #define virt_to_page(addr) pfn_to_page(virt_to_pfn(addr)) #define page_to_virt(page) pfn_to_virt(page_to_pfn(page)) #ifndef page_to_phys #define page_to_phys(page) ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT) #endif #define pfn_valid(pfn) ((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr) #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \ ((void *)(kaddr) < (void *)memory_end)) #endif /* __ASSEMBLY__ */ #include #include #endif /* __ASM_GENERIC_PAGE_H */ 0li~ Je8p\e1h e_ub &=Ly[Ͽ x7zXZִF!t/= 8]?Eh=ڜ.+͟#pZd,^8[qףao u|y{StnʯyξyT*aUT?6Ǜu>/7~cxoaX(~#I5񚹍@ȉ8T i #}CJ̖}C#L@"lwO-n7H /dޟ/К@lշf[|mQ¥P&+;8#C%2<9KU#~67L$ EN`buX[Y^d;ҁ~y6"̡-zB8JG8*:QR~ky'8[* t uRr 5v☫i?8z0W2)DΑm.a:)å|ZsUi1?u%&{iHa&N.xr (ݠrĶ;dRiaJx_I "xLEl7ɜ%?4Jf vRi >$sXHf]@Kyzx*,jݞ)q:!ء'5"Fx Sz<E\V9I=<n:Vy.]=A6G,*C>̵} z%=ݗ}R,uz_iSWRm,nL b۹8YKaь/埞Tm$) A̿x *[72m`Au\buyH%Fck4cO)l񴥒^SZ6;17@OUS߅P}9@HYu&mrk_QU|}%n9-?4SPU=܁[bƭ"QtIҎ2?0xf4RxIT%?A-7E-+?5'oYF )9-xy%x7;/4OL&h|[#g4b-Z;_!htC$w"~ob}Sds ֣B