| 1 |
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| 2 | #ifndef _ALPHA_PAGE_H
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| 3 | #define _ALPHA_PAGE_H
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| 4 |
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| 5 | #include <linux/const.h>
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| 6 | #include <asm/pal.h>
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| 7 | #include <vdso/page.h>
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| 8 |
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| 9 | #ifdef CONFIG_HUGETLB_PAGE
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| 10 | |
| 11 | * The default huge page is the largest granularity hint block, 4MB. All
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| 12 | * three hint sizes are registered as hstates, hence HUGE_MAX_HSTATE, which
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| 13 | * linux/hugetlb.h needs before it includes asm/hugetlb.h.
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| 14 |
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| 15 | #define HPAGE_SHIFT 22
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| 16 | #define HPAGE_SIZE (_AC(1, UL) << HPAGE_SHIFT)
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| 17 | #define HPAGE_MASK (~(HPAGE_SIZE - 1))
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| 18 | #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
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| 19 | #define HUGE_MAX_HSTATE 3
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| 20 | #endif
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| 21 |
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| 22 | #ifndef __ASSEMBLER__
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| 23 |
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| 24 | #define STRICT_MM_TYPECHECKS
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| 25 |
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| 26 | extern void clear_page(void *page);
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| 27 |
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| 28 | #define vma_alloc_zeroed_movable_folio(vma, vaddr) \
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| 29 | vma_alloc_folio(GFP_HIGHUSER_MOVABLE | __GFP_ZERO, 0, vma, vaddr)
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| 30 |
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| 31 | extern void copy_page(void * _to, void * _from);
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| 32 | #define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
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| 33 |
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| 34 | #ifdef STRICT_MM_TYPECHECKS
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| 35 | |
| 36 | * These are used to make use of C type-checking..
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| 37 |
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| 38 | typedef struct { unsigned long pte; } pte_t;
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| 39 | typedef struct { unsigned long pmd; } pmd_t;
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| 40 | typedef struct { unsigned long pgd; } pgd_t;
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| 41 | typedef struct { unsigned long pgprot; } pgprot_t;
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| 42 |
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| 43 | #define pte_val(x) ((x).pte)
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| 44 | #define pmd_val(x) ((x).pmd)
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| 45 | #define pgd_val(x) ((x).pgd)
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| 46 | #define pgprot_val(x) ((x).pgprot)
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| 47 |
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| 48 | #define __pte(x) ((pte_t) { (x) } )
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| 49 | #define __pmd(x) ((pmd_t) { (x) } )
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| 50 | #define __pgd(x) ((pgd_t) { (x) } )
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| 51 | #define __pgprot(x) ((pgprot_t) { (x) } )
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| 52 |
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| 53 | #else
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| 54 | |
| 55 | * .. while these make it easier on the compiler
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| 56 |
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| 57 | typedef unsigned long pte_t;
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| 58 | typedef unsigned long pmd_t;
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| 59 | typedef unsigned long pgd_t;
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| 60 | typedef unsigned long pgprot_t;
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| 61 |
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| 62 | #define pte_val(x) (x)
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| 63 | #define pmd_val(x) (x)
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| 64 | #define pgd_val(x) (x)
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| 65 | #define pgprot_val(x) (x)
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| 66 |
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| 67 | #define __pte(x) (x)
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| 68 | #define __pgd(x) (x)
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| 69 | #define __pgprot(x) (x)
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| 70 |
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| 71 | #endif
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| 72 |
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| 73 | typedef struct page *pgtable_t;
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| 74 |
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| 75 | #ifdef USE_48_BIT_KSEG
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| 76 | #define PAGE_OFFSET 0xffff800000000000UL
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| 77 | #else
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| 78 | #define PAGE_OFFSET 0xfffffc0000000000UL
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| 79 | #endif
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| 80 |
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| 81 | #else
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| 82 |
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| 83 | #ifdef USE_48_BIT_KSEG
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| 84 | #define PAGE_OFFSET 0xffff800000000000
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| 85 | #else
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| 86 | #define PAGE_OFFSET 0xfffffc0000000000
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| 87 | #endif
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| 88 |
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| 89 | #endif
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| 90 |
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| 91 | #define __pa(x) ((unsigned long) (x) - PAGE_OFFSET)
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| 92 | #define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET))
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| 93 |
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| 94 | #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
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| 95 | #define virt_addr_valid(kaddr) pfn_valid((__pa(kaddr) >> PAGE_SHIFT))
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| 96 |
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| 97 | #include <asm-generic/memory_model.h>
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| 98 | #include <asm-generic/getorder.h>
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| 99 |
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| 100 | #endif
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