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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | #ifndef _SPARC64_PAGE_H #define _SPARC64_PAGE_H #include <linux/const.h> #if defined(CONFIG_SPARC64_PAGE_SIZE_8KB) #define PAGE_SHIFT 13 #elif defined(CONFIG_SPARC64_PAGE_SIZE_64KB) #define PAGE_SHIFT 16 #else #error No page size specified in kernel configuration #endif #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE-1)) /* Flushing for D-cache alias handling is only needed if * the page size is smaller than 16K. */ #if PAGE_SHIFT < 14 #define DCACHE_ALIASING_POSSIBLE #endif #if defined(CONFIG_HUGETLB_PAGE_SIZE_4MB) #define HPAGE_SHIFT 22 #elif defined(CONFIG_HUGETLB_PAGE_SIZE_512K) #define HPAGE_SHIFT 19 #elif defined(CONFIG_HUGETLB_PAGE_SIZE_64K) #define HPAGE_SHIFT 16 #endif #ifdef CONFIG_HUGETLB_PAGE #define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) #define HPAGE_MASK (~(HPAGE_SIZE - 1UL)) #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA #endif #ifndef __ASSEMBLY__ #define WANT_PAGE_VIRTUAL extern void _clear_page(void *page); #define clear_page(X) _clear_page((void *)(X)) struct page; extern void clear_user_page(void *addr, unsigned long vaddr, struct page *page); #define copy_page(X,Y) memcpy((void *)(X), (void *)(Y), PAGE_SIZE) extern void copy_user_page(void *to, void *from, unsigned long vaddr, struct page *topage); /* Unlike sparc32, sparc64's parameter passing API is more * sane in that structures which as small enough are passed * in registers instead of on the stack. Thus, setting * STRICT_MM_TYPECHECKS does not generate worse code so * let's enable it to get the type checking. */ #define STRICT_MM_TYPECHECKS #ifdef STRICT_MM_TYPECHECKS /* These are used to make use of C type-checking.. */ typedef struct { unsigned long pte; } pte_t; typedef struct { unsigned long iopte; } iopte_t; typedef struct { unsigned int pmd; } pmd_t; typedef struct { unsigned int pgd; } pgd_t; typedef struct { unsigned long pgprot; } pgprot_t; #define pte_val(x) ((x).pte) #define iopte_val(x) ((x).iopte) #define pmd_val(x) ((x).pmd) #define pgd_val(x) ((x).pgd) #define pgprot_val(x) ((x).pgprot) #define __pte(x) ((pte_t) { (x) } ) #define __iopte(x) ((iopte_t) { (x) } ) #define __pmd(x) ((pmd_t) { (x) } ) #define __pgd(x) ((pgd_t) { (x) } ) #define __pgprot(x) ((pgprot_t) { (x) } ) #else /* .. while these make it easier on the compiler */ typedef unsigned long pte_t; typedef unsigned long iopte_t; typedef unsigned int pmd_t; typedef unsigned int pgd_t; typedef unsigned long pgprot_t; #define pte_val(x) (x) #define iopte_val(x) (x) #define pmd_val(x) (x) #define pgd_val(x) (x) #define pgprot_val(x) (x) #define __pte(x) (x) #define __iopte(x) (x) #define __pmd(x) (x) #define __pgd(x) (x) #define __pgprot(x) (x) #endif /* (STRICT_MM_TYPECHECKS) */ typedef struct page *pgtable_t; #define TASK_UNMAPPED_BASE (test_thread_flag(TIF_32BIT) ? \ (_AC(0x0000000070000000,UL)) : \ (_AC(0xfffff80000000000,UL) + (1UL << 32UL))) #include <asm-generic/memory_model.h> #endif /* !(__ASSEMBLY__) */ /* We used to stick this into a hard-coded global register (%g4) * but that does not make sense anymore. */ #define PAGE_OFFSET _AC(0xFFFFF80000000000,UL) #ifndef __ASSEMBLY__ #define __pa(x) ((unsigned long)(x) - PAGE_OFFSET) #define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET)) #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr)>>PAGE_SHIFT) #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) #define virt_to_phys __pa #define phys_to_virt __va #endif /* !(__ASSEMBLY__) */ #define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \ VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) #include <asm-generic/getorder.h> #endif /* _SPARC64_PAGE_H */ |