forked from Minki/linux
6d779079bf
This patch moves all architecture functions for hugetlb to architecture header files (include/asm-foo/hugetlb.h) and converts all macros to inline functions. It also removes (!) ARCH_HAS_HUGEPAGE_ONLY_RANGE, ARCH_HAS_HUGETLB_FREE_PGD_RANGE, ARCH_HAS_PREPARE_HUGEPAGE_RANGE, ARCH_HAS_SETCLEAR_HUGE_PTE and ARCH_HAS_HUGETLB_PREFAULT_HOOK. Getting rid of the ARCH_HAS_xxx #ifdef and macro fugliness should increase readability and maintainability, at the price of some code duplication. An asm-generic common part would have reduced the loc, but we would end up with new ARCH_HAS_xxx defines eventually. Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
145 lines
4.0 KiB
C
145 lines
4.0 KiB
C
/* $Id: page.h,v 1.39 2002/02/09 19:49:31 davem Exp $ */
|
|
|
|
#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
|
|
#elif defined(CONFIG_SPARC64_PAGE_SIZE_512KB)
|
|
#define PAGE_SHIFT 19
|
|
#elif defined(CONFIG_SPARC64_PAGE_SIZE_4MB)
|
|
#define PAGE_SHIFT 22
|
|
#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__) */
|
|
|
|
/* to align the pointer to the (next) page boundary */
|
|
#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
|
|
|
|
/* 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 */
|