123 lines
3.5 KiB
C
123 lines
3.5 KiB
C
#ifndef __ASM_SH64_PAGE_H
|
|
#define __ASM_SH64_PAGE_H
|
|
|
|
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* include/asm-sh64/page.h
|
|
*
|
|
* Copyright (C) 2000, 2001 Paolo Alberelli
|
|
* Copyright (C) 2003, 2004 Paul Mundt
|
|
*
|
|
* benedict.gaster@superh.com 19th, 24th July 2002.
|
|
*
|
|
* Modified to take account of enabling for D-CACHE support.
|
|
*
|
|
*/
|
|
|
|
#include <linux/config.h>
|
|
|
|
/* PAGE_SHIFT determines the page size */
|
|
#define PAGE_SHIFT 12
|
|
#ifdef __ASSEMBLY__
|
|
#define PAGE_SIZE 4096
|
|
#else
|
|
#define PAGE_SIZE (1UL << PAGE_SHIFT)
|
|
#endif
|
|
#define PAGE_MASK (~(PAGE_SIZE-1))
|
|
#define PTE_MASK PAGE_MASK
|
|
|
|
#if defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
|
|
#define HPAGE_SHIFT 16
|
|
#elif defined(CONFIG_HUGETLB_PAGE_SIZE_1MB)
|
|
#define HPAGE_SHIFT 20
|
|
#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512MB)
|
|
#define HPAGE_SHIFT 29
|
|
#endif
|
|
|
|
#ifdef CONFIG_HUGETLB_PAGE
|
|
#define HPAGE_SIZE (1UL << HPAGE_SHIFT)
|
|
#define HPAGE_MASK (~(HPAGE_SIZE-1))
|
|
#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT-PAGE_SHIFT)
|
|
#define ARCH_HAS_SETCLEAR_HUGE_PTE
|
|
#endif
|
|
|
|
#ifdef __KERNEL__
|
|
#ifndef __ASSEMBLY__
|
|
|
|
extern struct page *mem_map;
|
|
extern void sh64_page_clear(void *page);
|
|
extern void sh64_page_copy(void *from, void *to);
|
|
|
|
#define clear_page(page) sh64_page_clear(page)
|
|
#define copy_page(to,from) sh64_page_copy(from, to)
|
|
|
|
#if defined(CONFIG_DCACHE_DISABLED)
|
|
|
|
#define clear_user_page(page, vaddr, pg) clear_page(page)
|
|
#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
|
|
|
|
#else
|
|
|
|
extern void clear_user_page(void *to, unsigned long address, struct page *pg);
|
|
extern void copy_user_page(void *to, void *from, unsigned long address, struct page *pg);
|
|
|
|
#endif /* defined(CONFIG_DCACHE_DISABLED) */
|
|
|
|
/*
|
|
* These are used to make use of C type-checking..
|
|
*/
|
|
typedef struct { unsigned long long pte; } pte_t;
|
|
typedef struct { unsigned long pmd; } pmd_t;
|
|
typedef struct { unsigned long pgd; } pgd_t;
|
|
typedef struct { unsigned long pgprot; } pgprot_t;
|
|
|
|
#define pte_val(x) ((x).pte)
|
|
#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 __pmd(x) ((pmd_t) { (x) } )
|
|
#define __pgd(x) ((pgd_t) { (x) } )
|
|
#define __pgprot(x) ((pgprot_t) { (x) } )
|
|
|
|
#endif /* !__ASSEMBLY__ */
|
|
|
|
/* to align the pointer to the (next) page boundary */
|
|
#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
|
|
|
|
/*
|
|
* Kconfig defined.
|
|
*/
|
|
#define __MEMORY_START (CONFIG_MEMORY_START)
|
|
#define PAGE_OFFSET (CONFIG_CACHED_MEMORY_OFFSET)
|
|
|
|
#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET)
|
|
#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET))
|
|
#define MAP_NR(addr) ((__pa(addr)-__MEMORY_START) >> PAGE_SHIFT)
|
|
#define VALID_PAGE(page) ((page - mem_map) < max_mapnr)
|
|
|
|
#define phys_to_page(phys) (mem_map + (((phys) - __MEMORY_START) >> PAGE_SHIFT))
|
|
#define page_to_phys(page) (((page - mem_map) << PAGE_SHIFT) + __MEMORY_START)
|
|
|
|
/* PFN start number, because of __MEMORY_START */
|
|
#define PFN_START (__MEMORY_START >> PAGE_SHIFT)
|
|
|
|
#define pfn_to_page(pfn) (mem_map + (pfn) - PFN_START)
|
|
#define page_to_pfn(page) ((unsigned long)((page) - mem_map) + PFN_START)
|
|
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
|
|
#define pfn_valid(pfn) (((pfn) - PFN_START) < max_mapnr)
|
|
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
|
|
|
|
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
|
|
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#include <asm-generic/page.h>
|
|
|
|
#endif /* __ASM_SH64_PAGE_H */
|