| #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 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 <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 */ |