^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #ifndef __ASM_GENERIC_PAGE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #define __ASM_GENERIC_PAGE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Generic page.h implementation, for NOMMU architectures.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * This provides the dummy definitions for the memory management.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #ifdef CONFIG_MMU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #error need to provide a real asm/page.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) /* PAGE_SHIFT determines the page size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define PAGE_SHIFT 12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #ifdef __ASSEMBLY__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define PAGE_SIZE (1 << PAGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define PAGE_SIZE (1UL << PAGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define PAGE_MASK (~(PAGE_SIZE-1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <asm/setup.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #ifndef __ASSEMBLY__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define clear_page(page) memset((page), 0, PAGE_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define clear_user_page(page, vaddr, pg) clear_page(page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * These are used to make use of C type-checking..
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) unsigned long pte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) } pte_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) unsigned long pmd[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) } pmd_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) unsigned long pgd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) } pgd_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) unsigned long pgprot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) } pgprot_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) typedef struct page *pgtable_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define pte_val(x) ((x).pte)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define pmd_val(x) ((&x)->pmd[0])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define pgd_val(x) ((x).pgd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define pgprot_val(x) ((x).pgprot)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define __pte(x) ((pte_t) { (x) } )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define __pmd(x) ((pmd_t) { (x) } )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define __pgd(x) ((pgd_t) { (x) } )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define __pgprot(x) ((pgprot_t) { (x) } )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) extern unsigned long memory_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) extern unsigned long memory_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #endif /* !__ASSEMBLY__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #ifdef CONFIG_KERNEL_RAM_BASE_ADDRESS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #define PAGE_OFFSET (CONFIG_KERNEL_RAM_BASE_ADDRESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #define PAGE_OFFSET (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #ifndef ARCH_PFN_OFFSET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #ifndef __ASSEMBLY__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #define __va(x) ((void *)((unsigned long) (x)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define __pa(x) ((unsigned long) (x))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define virt_to_page(addr) pfn_to_page(virt_to_pfn(addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #define page_to_virt(page) pfn_to_virt(page_to_pfn(page))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #ifndef page_to_phys
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #define page_to_phys(page) ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #define pfn_valid(pfn) ((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) ((void *)(kaddr) < (void *)memory_end))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) #endif /* __ASSEMBLY__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) #include <asm-generic/memory_model.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) #include <asm-generic/getorder.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #endif /* __ASM_GENERIC_PAGE_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags