#ifndef _SPARC64_PAGE_H #define _SPARC64_PAGE_H #include #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 22 #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; extern void hugetlb_setup(struct pt_regs *regs); #endif #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 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 * represents the virtual address space hole present in most early * sparc64 chips including UltraSPARC-I. 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 SPARC64_VA_HOLE_TOP _AC(0xfffff80000000000,UL) #define SPARC64_VA_HOLE_BOTTOM _AC(0x0000080000000000,UL) #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 #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 #endif /* _SPARC64_PAGE_H */