projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _ASM_M32R_PAGE_H |
| 2 | #define _ASM_M32R_PAGE_H | |
| 3 | ||
| 1da177e4 LT |
4 | /* PAGE_SHIFT determines the page size */ |
| 5 | #define PAGE_SHIFT 12 | |
| 6 | #define PAGE_SIZE (1UL << PAGE_SHIFT) | |
| 7 | #define PAGE_MASK (~(PAGE_SIZE-1)) | |
| 8 | ||
| 1da177e4 LT |
9 | #ifndef __ASSEMBLY__ |
| 10 | ||
| 11 | extern void clear_page(void *to); | |
| 12 | extern void copy_page(void *to, void *from); | |
| 13 | ||
| 14 | #define clear_user_page(page, vaddr, pg) clear_page(page) | |
| 15 | #define copy_user_page(to, from, vaddr, pg) copy_page(to, from) | |
| 16 | ||
| 769848c0 MG |
17 | #define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \ |
| 18 | alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr) | |
| 1da177e4 LT |
19 | #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE |
| 20 | ||
| 21 | /* | |
| 22 | * These are used to make use of C type-checking.. | |
| 23 | */ | |
| 24 | typedef struct { unsigned long pte; } pte_t; | |
| 25 | typedef struct { unsigned long pmd; } pmd_t; | |
| 26 | typedef struct { unsigned long pgd; } pgd_t; | |
| 27 | #define pte_val(x) ((x).pte) | |
| 28 | #define PTE_MASK PAGE_MASK | |
| 29 | ||
| 30 | typedef struct { unsigned long pgprot; } pgprot_t; | |
| 2f569afd | 31 | typedef struct page *pgtable_t; |
| 1da177e4 LT |
32 | |
| 33 | #define pmd_val(x) ((x).pmd) | |
| 34 | #define pgd_val(x) ((x).pgd) | |
| 35 | #define pgprot_val(x) ((x).pgprot) | |
| 36 | ||
| 37 | #define __pte(x) ((pte_t) { (x) } ) | |
| 38 | #define __pmd(x) ((pmd_t) { (x) } ) | |
| 39 | #define __pgd(x) ((pgd_t) { (x) } ) | |
| 40 | #define __pgprot(x) ((pgprot_t) { (x) } ) | |
| 41 | ||
| 42 | #endif /* !__ASSEMBLY__ */ | |
| 43 | ||
| 44 | /* to align the pointer to the (next) page boundary */ | |
| 45 | #define PAGE_ALIGN(addr) (((addr) + PAGE_SIZE - 1) & PAGE_MASK) | |
| 46 | ||
| 47 | /* | |
| 48 | * This handles the memory map.. We could make this a config | |
| 49 | * option, but too many people screw it up, and too few need | |
| 50 | * it. | |
| 51 | * | |
| 52 | * A __PAGE_OFFSET of 0xC0000000 means that the kernel has | |
| 53 | * a virtual address space of one gigabyte, which limits the | |
| 54 | * amount of physical memory you can use to about 950MB. | |
| 55 | * | |
| 56 | * If you want more physical memory than this then see the CONFIG_HIGHMEM4G | |
| 57 | * and CONFIG_HIGHMEM64G options in the kernel configuration. | |
| 58 | */ | |
| 59 | ||
| 1da177e4 LT |
60 | #define __MEMORY_START CONFIG_MEMORY_START |
| 61 | #define __MEMORY_SIZE CONFIG_MEMORY_SIZE | |
| 62 | ||
| 63 | #ifdef CONFIG_MMU | |
| 64 | #define __PAGE_OFFSET (0x80000000) | |
| 65 | #else | |
| 66 | #define __PAGE_OFFSET (0x00000000) | |
| 67 | #endif | |
| 68 | ||
| 69 | #define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) | |
| 70 | #define __pa(x) ((unsigned long)(x) - PAGE_OFFSET) | |
| 71 | #define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET)) | |
| 72 | ||
| 73 | #ifndef CONFIG_DISCONTIGMEM | |
| 74 | #define PFN_BASE (CONFIG_MEMORY_START >> PAGE_SHIFT) | |
| 7126cffe | 75 | #define ARCH_PFN_OFFSET PFN_BASE |
| 1da177e4 LT |
76 | #define pfn_valid(pfn) (((pfn) - PFN_BASE) < max_mapnr) |
| 77 | #endif /* !CONFIG_DISCONTIGMEM */ | |
| 78 | ||
| 79 | #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) | |
| 80 | #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) | |
| 81 | ||
| 82 | #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ | |
| 83 | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC ) | |
| 84 | ||
| 85 | #define devmem_is_allowed(x) 1 | |
| 86 | ||
| 7126cffe | 87 | #include <asm-generic/memory_model.h> |
| fd4fd5aa SR |
88 | #include <asm-generic/page.h> |
| 89 | ||
| 1da177e4 | 90 | #endif /* _ASM_M32R_PAGE_H */ |