| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _ASM_SCORE_PAGE_H |
| #define _ASM_SCORE_PAGE_H |
| |
| #include <linux/pfn.h> |
| #include <linux/const.h> |
| |
| /* PAGE_SHIFT determines the page size */ |
| #define PAGE_SHIFT (12) |
| #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) |
| #define PAGE_MASK (~(PAGE_SIZE-1)) |
| |
| #ifdef __KERNEL__ |
| |
| #ifndef __ASSEMBLY__ |
| |
| #define PAGE_UP(addr) (((addr)+((PAGE_SIZE)-1))&(~((PAGE_SIZE)-1))) |
| #define PAGE_DOWN(addr) ((addr)&(~((PAGE_SIZE)-1))) |
| |
| /* align addr on a size boundary - adjust address up/down if needed */ |
| #define _ALIGN_UP(addr, size) (((addr)+((size)-1))&(~((size)-1))) |
| #define _ALIGN_DOWN(addr, size) ((addr)&(~((size)-1))) |
| |
| /* align addr on a size boundary - adjust address up if needed */ |
| #define _ALIGN(addr, size) _ALIGN_UP(addr, size) |
| |
| /* |
| * PAGE_OFFSET -- the first address of the first page of memory. When not |
| * using MMU this corresponds to the first free page in physical memory (aligned |
| * on a page boundary). |
| */ |
| #define PAGE_OFFSET (0xA0000000UL) |
| |
| #define clear_page(pgaddr) memset((pgaddr), 0, PAGE_SIZE) |
| #define copy_page(to, from) memcpy((to), (from), PAGE_SIZE) |
| |
| #define clear_user_page(pgaddr, vaddr, page) memset((pgaddr), 0, PAGE_SIZE) |
| #define copy_user_page(vto, vfrom, vaddr, topg) \ |
| memcpy((vto), (vfrom), PAGE_SIZE) |
| |
| /* |
| * These are used to make use of C type-checking.. |
| */ |
| |
| typedef struct { unsigned long pte; } pte_t; /* page table entry */ |
| typedef struct { unsigned long pgd; } pgd_t; /* PGD table entry */ |
| typedef struct { unsigned long pgprot; } pgprot_t; |
| typedef struct page *pgtable_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) }) |
| |
| extern unsigned long max_low_pfn; |
| extern unsigned long min_low_pfn; |
| extern unsigned long max_pfn; |
| |
| #define __pa(x) ((unsigned long)(x) - PAGE_OFFSET) |
| #define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET)) |
| |
| #define phys_to_pfn(phys) (PFN_DOWN(phys)) |
| #define pfn_to_phys(pfn) (PFN_PHYS(pfn)) |
| |
| #define virt_to_pfn(vaddr) (phys_to_pfn((__pa(vaddr)))) |
| #define pfn_to_virt(pfn) __va(pfn_to_phys((pfn))) |
| |
| #define virt_to_page(vaddr) (pfn_to_page(virt_to_pfn(vaddr))) |
| #define page_to_virt(page) (pfn_to_virt(page_to_pfn(page))) |
| |
| #define page_to_phys(page) (pfn_to_phys(page_to_pfn(page))) |
| #define page_to_bus(page) (page_to_phys(page)) |
| #define phys_to_page(paddr) (pfn_to_page(phys_to_pfn(paddr))) |
| |
| #define pfn_valid(pfn) (((pfn) >= min_low_pfn) && ((pfn) < max_low_pfn)) |
| |
| #define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT) |
| |
| #endif /* __ASSEMBLY__ */ |
| |
| #define virt_addr_valid(vaddr) (pfn_valid(virt_to_pfn(vaddr))) |
| |
| #endif /* __KERNEL__ */ |
| |
| #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ |
| VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) |
| |
| #include <asm-generic/memory_model.h> |
| #include <asm-generic/getorder.h> |
| |
| #endif /* _ASM_SCORE_PAGE_H */ |