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author | Sam Ravnborg <sam@ravnborg.org> | 2008-07-27 23:00:59 +0200 |
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committer | Sam Ravnborg <sam@ravnborg.org> | 2008-07-27 23:00:59 +0200 |
commit | a439fe51a1f8eb087c22dd24d69cebae4a3addac (patch) | |
tree | e32d1fa97a220ab598d8ab364205817c5bf2bd6f /arch/sparc/include/asm/page_64.h | |
parent | 837b41b5de356aa67abb2cadb5eef3efc7776f91 (diff) | |
download | linux-a439fe51a1f8eb087c22dd24d69cebae4a3addac.tar.gz linux-a439fe51a1f8eb087c22dd24d69cebae4a3addac.tar.bz2 linux-a439fe51a1f8eb087c22dd24d69cebae4a3addac.zip |
sparc, sparc64: use arch/sparc/include
The majority of this patch was created by the following script:
***
ASM=arch/sparc/include/asm
mkdir -p $ASM
git mv include/asm-sparc64/ftrace.h $ASM
git rm include/asm-sparc64/*
git mv include/asm-sparc/* $ASM
sed -ie 's/asm-sparc64/asm/g' $ASM/*
sed -ie 's/asm-sparc/asm/g' $ASM/*
***
The rest was an update of the top-level Makefile to use sparc
for header files when sparc64 is being build.
And a small fixlet to pick up the correct unistd.h from
sparc64 code.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'arch/sparc/include/asm/page_64.h')
-rw-r--r-- | arch/sparc/include/asm/page_64.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/page_64.h b/arch/sparc/include/asm/page_64.h new file mode 100644 index 000000000000..b579b910ef51 --- /dev/null +++ b/arch/sparc/include/asm/page_64.h @@ -0,0 +1,135 @@ +#ifndef _SPARC64_PAGE_H +#define _SPARC64_PAGE_H + +#include <linux/const.h> + +#if defined(CONFIG_SPARC64_PAGE_SIZE_8KB) +#define PAGE_SHIFT 13 +#elif defined(CONFIG_SPARC64_PAGE_SIZE_64KB) +#define PAGE_SHIFT 16 +#else +#error No page size specified in kernel configuration +#endif + +#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 + +#if defined(CONFIG_HUGETLB_PAGE_SIZE_4MB) +#define HPAGE_SHIFT 22 +#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512K) +#define HPAGE_SHIFT 19 +#elif defined(CONFIG_HUGETLB_PAGE_SIZE_64K) +#define HPAGE_SHIFT 16 +#endif + +#ifdef CONFIG_HUGETLB_PAGE +#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__ + +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 struct page *pgtable_t; + +#define TASK_UNMAPPED_BASE (test_thread_flag(TIF_32BIT) ? \ + (_AC(0x0000000070000000,UL)) : \ + (_AC(0xfffff80000000000,UL) + (1UL << 32UL))) + +#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/page.h> + +#endif /* _SPARC64_PAGE_H */ |