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163 lines
4.6 KiB
163 lines
4.6 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _SPARC64_PAGE_H |
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#define _SPARC64_PAGE_H |
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#include <linux/const.h> |
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#define PAGE_SHIFT 13 |
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#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) |
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#define PAGE_MASK (~(PAGE_SIZE-1)) |
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/* Flushing for D-cache alias handling is only needed if |
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* the page size is smaller than 16K. |
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*/ |
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#if PAGE_SHIFT < 14 |
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#define DCACHE_ALIASING_POSSIBLE |
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#endif |
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#define HPAGE_SHIFT 23 |
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#define REAL_HPAGE_SHIFT 22 |
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#define HPAGE_16GB_SHIFT 34 |
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#define HPAGE_2GB_SHIFT 31 |
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#define HPAGE_256MB_SHIFT 28 |
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#define HPAGE_64K_SHIFT 16 |
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#define REAL_HPAGE_SIZE (_AC(1,UL) << REAL_HPAGE_SHIFT) |
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#if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE) |
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#define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) |
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#define HPAGE_MASK (~(HPAGE_SIZE - 1UL)) |
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#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) |
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#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA |
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#define REAL_HPAGE_PER_HPAGE (_AC(1,UL) << (HPAGE_SHIFT - REAL_HPAGE_SHIFT)) |
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#define HUGE_MAX_HSTATE 5 |
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#endif |
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#ifndef __ASSEMBLY__ |
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#if defined(CONFIG_HUGETLB_PAGE) || defined(CONFIG_TRANSPARENT_HUGEPAGE) |
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struct pt_regs; |
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void hugetlb_setup(struct pt_regs *regs); |
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#endif |
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#define WANT_PAGE_VIRTUAL |
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void _clear_page(void *page); |
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#define clear_page(X) _clear_page((void *)(X)) |
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struct page; |
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void clear_user_page(void *addr, unsigned long vaddr, struct page *page); |
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#define copy_page(X,Y) memcpy((void *)(X), (void *)(Y), PAGE_SIZE) |
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void copy_user_page(void *to, void *from, unsigned long vaddr, struct page *topage); |
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#define __HAVE_ARCH_COPY_USER_HIGHPAGE |
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struct vm_area_struct; |
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void copy_user_highpage(struct page *to, struct page *from, |
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unsigned long vaddr, struct vm_area_struct *vma); |
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#define __HAVE_ARCH_COPY_HIGHPAGE |
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void copy_highpage(struct page *to, struct page *from); |
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/* Unlike sparc32, sparc64's parameter passing API is more |
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* sane in that structures which as small enough are passed |
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* in registers instead of on the stack. Thus, setting |
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* STRICT_MM_TYPECHECKS does not generate worse code so |
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* let's enable it to get the type checking. |
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*/ |
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#define STRICT_MM_TYPECHECKS |
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#ifdef STRICT_MM_TYPECHECKS |
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/* These are used to make use of C type-checking.. */ |
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typedef struct { unsigned long pte; } pte_t; |
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typedef struct { unsigned long iopte; } iopte_t; |
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typedef struct { unsigned long pmd; } pmd_t; |
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typedef struct { unsigned long pud; } pud_t; |
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typedef struct { unsigned long pgd; } pgd_t; |
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typedef struct { unsigned long pgprot; } pgprot_t; |
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#define pte_val(x) ((x).pte) |
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#define iopte_val(x) ((x).iopte) |
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#define pmd_val(x) ((x).pmd) |
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#define pud_val(x) ((x).pud) |
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#define pgd_val(x) ((x).pgd) |
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#define pgprot_val(x) ((x).pgprot) |
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#define __pte(x) ((pte_t) { (x) } ) |
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#define __iopte(x) ((iopte_t) { (x) } ) |
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#define __pmd(x) ((pmd_t) { (x) } ) |
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#define __pud(x) ((pud_t) { (x) } ) |
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#define __pgd(x) ((pgd_t) { (x) } ) |
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#define __pgprot(x) ((pgprot_t) { (x) } ) |
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#else |
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/* .. while these make it easier on the compiler */ |
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typedef unsigned long pte_t; |
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typedef unsigned long iopte_t; |
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typedef unsigned long pmd_t; |
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typedef unsigned long pud_t; |
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typedef unsigned long pgd_t; |
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typedef unsigned long pgprot_t; |
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#define pte_val(x) (x) |
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#define iopte_val(x) (x) |
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#define pmd_val(x) (x) |
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#define pud_val(x) (x) |
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#define pgd_val(x) (x) |
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#define pgprot_val(x) (x) |
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#define __pte(x) (x) |
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#define __iopte(x) (x) |
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#define __pmd(x) (x) |
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#define __pud(x) (x) |
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#define __pgd(x) (x) |
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#define __pgprot(x) (x) |
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#endif /* (STRICT_MM_TYPECHECKS) */ |
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typedef pte_t *pgtable_t; |
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extern unsigned long sparc64_va_hole_top; |
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extern unsigned long sparc64_va_hole_bottom; |
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/* The next two defines specify the actual exclusion region we |
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* enforce, wherein we use a 4GB red zone on each side of the VA hole. |
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*/ |
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#define VA_EXCLUDE_START (sparc64_va_hole_bottom - (1UL << 32UL)) |
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#define VA_EXCLUDE_END (sparc64_va_hole_top + (1UL << 32UL)) |
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#define TASK_UNMAPPED_BASE (test_thread_flag(TIF_32BIT) ? \ |
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_AC(0x0000000070000000,UL) : \ |
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VA_EXCLUDE_END) |
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#include <asm-generic/memory_model.h> |
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extern unsigned long PAGE_OFFSET; |
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#endif /* !(__ASSEMBLY__) */ |
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/* The maximum number of physical memory address bits we support. The |
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* largest value we can support is whatever "KPGD_SHIFT + KPTE_BITS" |
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* evaluates to. |
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*/ |
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#define MAX_PHYS_ADDRESS_BITS 53 |
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#define ILOG2_4MB 22 |
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#define ILOG2_256MB 28 |
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#ifndef __ASSEMBLY__ |
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#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET) |
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#define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET)) |
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#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) |
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#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr)>>PAGE_SHIFT) |
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#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) |
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#define virt_to_phys __pa |
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#define phys_to_virt __va |
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#endif /* !(__ASSEMBLY__) */ |
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#include <asm-generic/getorder.h> |
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#endif /* _SPARC64_PAGE_H */
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