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Diffstat (limited to 'include/asm-sh/page.h')
| -rw-r--r-- | include/asm-sh/page.h | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/include/asm-sh/page.h b/include/asm-sh/page.h deleted file mode 100644 index 77fb8bf..0000000 --- a/include/asm-sh/page.h +++ /dev/null @@ -1,183 +0,0 @@ -#ifndef __ASM_SH_PAGE_H -#define __ASM_SH_PAGE_H - -/* - * Copyright (C) 1999 Niibe Yutaka - */ - -#include <linux/const.h> - -/* PAGE_SHIFT determines the page size */ -#if defined(CONFIG_PAGE_SIZE_4KB) -# define PAGE_SHIFT 12 -#elif defined(CONFIG_PAGE_SIZE_8KB) -# define PAGE_SHIFT 13 -#elif defined(CONFIG_PAGE_SIZE_16KB) -# define PAGE_SHIFT 14 -#elif defined(CONFIG_PAGE_SIZE_64KB) -# define PAGE_SHIFT 16 -#else -# error "Bogus kernel page size?" -#endif - -#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) -#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_256K) -#define HPAGE_SHIFT 18 -#elif defined(CONFIG_HUGETLB_PAGE_SIZE_1MB) -#define HPAGE_SHIFT 20 -#elif defined(CONFIG_HUGETLB_PAGE_SIZE_4MB) -#define HPAGE_SHIFT 22 -#elif defined(CONFIG_HUGETLB_PAGE_SIZE_64MB) -#define HPAGE_SHIFT 26 -#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) -#endif - -#ifndef __ASSEMBLY__ - -extern unsigned long shm_align_mask; -extern unsigned long max_low_pfn, min_low_pfn; -extern unsigned long memory_start, memory_end; - -extern void clear_page(void *to); -extern void copy_page(void *to, void *from); - -#if !defined(CONFIG_CACHE_OFF) && defined(CONFIG_MMU) && \ - (defined(CONFIG_CPU_SH5) || defined(CONFIG_CPU_SH4) || \ - defined(CONFIG_SH7705_CACHE_32KB)) -struct page; -struct vm_area_struct; -extern void clear_user_page(void *to, unsigned long address, struct page *page); -extern void copy_user_page(void *to, void *from, unsigned long address, - struct page *page); -#if defined(CONFIG_CPU_SH4) -extern void copy_user_highpage(struct page *to, struct page *from, - unsigned long vaddr, struct vm_area_struct *vma); -#define __HAVE_ARCH_COPY_USER_HIGHPAGE -#endif -#else -#define clear_user_page(page, vaddr, pg) clear_page(page) -#define copy_user_page(to, from, vaddr, pg) copy_page(to, from) -#endif - -/* - * These are used to make use of C type-checking.. - */ -#ifdef CONFIG_X2TLB -typedef struct { unsigned long pte_low, pte_high; } pte_t; -typedef struct { unsigned long long pgprot; } pgprot_t; -typedef struct { unsigned long long pgd; } pgd_t; -#define pte_val(x) \ - ((x).pte_low | ((unsigned long long)(x).pte_high << 32)) -#define __pte(x) \ - ({ pte_t __pte = {(x), ((unsigned long long)(x)) >> 32}; __pte; }) -#elif defined(CONFIG_SUPERH32) -typedef struct { unsigned long pte_low; } pte_t; -typedef struct { unsigned long pgprot; } pgprot_t; -typedef struct { unsigned long pgd; } pgd_t; -#define pte_val(x) ((x).pte_low) -#define __pte(x) ((pte_t) { (x) } ) -#else -typedef struct { unsigned long long pte_low; } pte_t; -typedef struct { unsigned long pgprot; } pgprot_t; -typedef struct { unsigned long pgd; } pgd_t; -#define pte_val(x) ((x).pte_low) -#define __pte(x) ((pte_t) { (x) } ) -#endif - -#define pgd_val(x) ((x).pgd) -#define pgprot_val(x) ((x).pgprot) - -#define __pgd(x) ((pgd_t) { (x) } ) -#define __pgprot(x) ((pgprot_t) { (x) } ) - -typedef struct page *pgtable_t; - -#endif /* !__ASSEMBLY__ */ - -/* - * __MEMORY_START and SIZE are the physical addresses and size of RAM. - */ -#define __MEMORY_START CONFIG_MEMORY_START -#define __MEMORY_SIZE CONFIG_MEMORY_SIZE - -/* - * PAGE_OFFSET is the virtual address of the start of kernel address - * space. - */ -#define PAGE_OFFSET CONFIG_PAGE_OFFSET - -/* - * Virtual to physical RAM address translation. - * - * In 29 bit mode, the physical offset of RAM from address 0 is visible in - * the kernel virtual address space, and thus we don't have to take - * this into account when translating. However in 32 bit mode this offset - * is not visible (it is part of the PMB mapping) and so needs to be - * added or subtracted as required. - */ -#ifdef CONFIG_32BIT -#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET+__MEMORY_START) -#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET-__MEMORY_START)) -#else -#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET) -#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) -#endif - -#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) -#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) - -/* - * PFN = physical frame number (ie PFN 0 == physical address 0) - * PFN_START is the PFN of the first page of RAM. By defining this we - * don't have struct page entries for the portion of address space - * between physical address 0 and the start of RAM. - */ -#define PFN_START (__MEMORY_START >> PAGE_SHIFT) -#define ARCH_PFN_OFFSET (PFN_START) -#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) -#ifdef CONFIG_FLATMEM -#define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) < max_low_pfn) -#endif -#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) - -#include <asm-generic/memory_model.h> -#include <asm-generic/page.h> - -/* vDSO support */ -#ifdef CONFIG_VSYSCALL -#define __HAVE_ARCH_GATE_AREA -#endif - -/* - * Some drivers need to perform DMA into kmalloc'ed buffers - * and so we have to increase the kmalloc minalign for this. - */ -#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES - -#ifdef CONFIG_SUPERH64 -/* - * While BYTES_PER_WORD == 4 on the current sh64 ABI, GCC will still - * happily generate {ld/st}.q pairs, requiring us to have 8-byte - * alignment to avoid traps. The kmalloc alignment is gauranteed by - * virtue of L1_CACHE_BYTES, requiring this to only be special cased - * for slab caches. - */ -#define ARCH_SLAB_MINALIGN 8 -#endif - -#endif /* __ASM_SH_PAGE_H */ |
