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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 | #ifndef _SPARC64_PAGE_H #define _SPARC64_PAGE_H #include <linux/const.h> #define PAGE_SHIFT 13 #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 #define HPAGE_SHIFT 23 #define REAL_HPAGE_SHIFT 22 #define REAL_HPAGE_SIZE (_AC(1,UL) << REAL_HPAGE_SHIFT) #if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE) #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__ #if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE) struct pt_regs; void hugetlb_setup(struct pt_regs *regs); #endif #define WANT_PAGE_VIRTUAL void _clear_page(void *page); #define clear_page(X) _clear_page((void *)(X)) struct page; void clear_user_page(void *addr, unsigned long vaddr, struct page *page); #define copy_page(X,Y) memcpy((void *)(X), (void *)(Y), PAGE_SIZE) 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 long pmd; } pmd_t; typedef struct { unsigned long 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 long pmd_t; typedef unsigned long 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 pte_t *pgtable_t; /* These two values define the virtual address space range in which we * must forbid 64-bit user processes from making mappings. It used to * represent precisely the virtual address space hole present in most * early sparc64 chips including UltraSPARC-I. But now it also is * further constrained by the limits of our page tables, which is * 43-bits of virtual address. */ #define SPARC64_VA_HOLE_TOP _AC(0xfffffc0000000000,UL) #define SPARC64_VA_HOLE_BOTTOM _AC(0x0000040000000000,UL) /* The next two defines specify the actual exclusion region we * enforce, wherein we use a 4GB red zone on each side of the VA hole. */ #define VA_EXCLUDE_START (SPARC64_VA_HOLE_BOTTOM - (1UL << 32UL)) #define VA_EXCLUDE_END (SPARC64_VA_HOLE_TOP + (1UL << 32UL)) #define TASK_UNMAPPED_BASE (test_thread_flag(TIF_32BIT) ? \ _AC(0x0000000070000000,UL) : \ VA_EXCLUDE_END) #include <asm-generic/memory_model.h> #define PAGE_OFFSET_BY_BITS(X) (-(_AC(1,UL) << (X))) extern unsigned long PAGE_OFFSET; #endif /* !(__ASSEMBLY__) */ /* The maximum number of physical memory address bits we support, this * is used to size various tables used to manage kernel TLB misses and * also the sparsemem code. */ #define MAX_PHYS_ADDRESS_BITS 47 /* These two shift counts are used when indexing sparc64_valid_addr_bitmap * and kpte_linear_bitmap. */ #define ILOG2_4MB 22 #define ILOG2_256MB 28 #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 */ |