diff options
Diffstat (limited to 'include/asm-m68k/page.h')
| -rw-r--r-- | include/asm-m68k/page.h | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/include/asm-m68k/page.h b/include/asm-m68k/page.h deleted file mode 100644 index f206dfbc1d4..00000000000 --- a/include/asm-m68k/page.h +++ /dev/null @@ -1,183 +0,0 @@ -#ifndef _M68K_PAGE_H -#define _M68K_PAGE_H - -#include <linux/config.h> - -/* PAGE_SHIFT determines the page size */ -#ifndef CONFIG_SUN3 -#define PAGE_SHIFT (12) -#else -#define PAGE_SHIFT (13) -#endif -#ifdef __ASSEMBLY__ -#define PAGE_SIZE (1 << PAGE_SHIFT) -#else -#define PAGE_SIZE (1UL << PAGE_SHIFT) -#endif -#define PAGE_MASK (~(PAGE_SIZE-1)) - -#ifdef __KERNEL__ - -#include <asm/setup.h> - -#if PAGE_SHIFT < 13 -#define THREAD_SIZE (8192) -#else -#define THREAD_SIZE PAGE_SIZE -#endif - -#ifndef __ASSEMBLY__ - -#define get_user_page(vaddr) __get_free_page(GFP_KERNEL) -#define free_user_page(page, addr) free_page(addr) - -/* - * We don't need to check for alignment etc. - */ -#ifdef CPU_M68040_OR_M68060_ONLY -static inline void copy_page(void *to, void *from) -{ - unsigned long tmp; - - __asm__ __volatile__("1:\t" - ".chip 68040\n\t" - "move16 %1@+,%0@+\n\t" - "move16 %1@+,%0@+\n\t" - ".chip 68k\n\t" - "dbra %2,1b\n\t" - : "=a" (to), "=a" (from), "=d" (tmp) - : "0" (to), "1" (from) , "2" (PAGE_SIZE / 32 - 1) - ); -} - -static inline void clear_page(void *page) -{ - unsigned long tmp; - unsigned long *sp = page; - - *sp++ = 0; - *sp++ = 0; - *sp++ = 0; - *sp++ = 0; - - __asm__ __volatile__("1:\t" - ".chip 68040\n\t" - "move16 %2@+,%0@+\n\t" - ".chip 68k\n\t" - "subqw #8,%2\n\t" - "subqw #8,%2\n\t" - "dbra %1,1b\n\t" - : "=a" (sp), "=d" (tmp) - : "a" (page), "0" (sp), - "1" ((PAGE_SIZE - 16) / 16 - 1)); -} - -#else -#define clear_page(page) memset((page), 0, PAGE_SIZE) -#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE) -#endif - -#define clear_user_page(addr, vaddr, page) \ - do { clear_page(addr); \ - flush_dcache_page(page); \ - } while (0) -#define copy_user_page(to, from, vaddr, page) \ - do { copy_page(to, from); \ - flush_dcache_page(page); \ - } while (0) - -/* - * These are used to make use of C type-checking.. - */ -typedef struct { unsigned long pte; } pte_t; -typedef struct { unsigned long pmd[16]; } 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[0]) -#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) } ) - -/* to align the pointer to the (next) page boundary */ -#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) - -#endif /* !__ASSEMBLY__ */ - -#include <asm/page_offset.h> - -#define PAGE_OFFSET (PAGE_OFFSET_RAW) - -#ifndef __ASSEMBLY__ - -#ifndef CONFIG_SUN3 - -#define WANT_PAGE_VIRTUAL -#ifdef CONFIG_SINGLE_MEMORY_CHUNK -extern unsigned long m68k_memoffset; - -#define __pa(vaddr) ((unsigned long)(vaddr)+m68k_memoffset) -#define __va(paddr) ((void *)((unsigned long)(paddr)-m68k_memoffset)) -#else -#define __pa(vaddr) virt_to_phys((void *)(vaddr)) -#define __va(paddr) phys_to_virt((unsigned long)(paddr)) -#endif - -#else /* !CONFIG_SUN3 */ -/* This #define is a horrible hack to suppress lots of warnings. --m */ -#define __pa(x) ___pa((unsigned long)(x)) -static inline unsigned long ___pa(unsigned long x) -{ - if(x == 0) - return 0; - if(x >= PAGE_OFFSET) - return (x-PAGE_OFFSET); - else - return (x+0x2000000); -} - -static inline void *__va(unsigned long x) -{ - if(x == 0) - return (void *)0; - - if(x < 0x2000000) - return (void *)(x+PAGE_OFFSET); - else - return (void *)(x-0x2000000); -} -#endif /* CONFIG_SUN3 */ - -/* - * NOTE: virtual isn't really correct, actually it should be the offset into the - * memory node, but we have no highmem, so that works for now. - * TODO: implement (fast) pfn<->pgdat_idx conversion functions, this makes lots - * of the shifts unnecessary. - */ -#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) -#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) - -#define virt_to_page(kaddr) (mem_map + (((unsigned long)(kaddr)-PAGE_OFFSET) >> PAGE_SHIFT)) -#define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET) - -#define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn)) -#define page_to_pfn(page) virt_to_pfn(page_to_virt(page)) - -#define virt_addr_valid(kaddr) ((void *)(kaddr) >= (void *)PAGE_OFFSET && (void *)(kaddr) < high_memory) -#define pfn_valid(pfn) virt_addr_valid(pfn_to_virt(pfn)) - -#endif /* __ASSEMBLY__ */ - -#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 /* _M68K_PAGE_H */ |