diff options
Diffstat (limited to 'include/asm-m68k/page.h')
| -rw-r--r-- | include/asm-m68k/page.h | 228 |
1 files changed, 0 insertions, 228 deletions
diff --git a/include/asm-m68k/page.h b/include/asm-m68k/page.h deleted file mode 100644 index a34b8bad784..00000000000 --- a/include/asm-m68k/page.h +++ /dev/null @@ -1,228 +0,0 @@ -#ifndef _M68K_PAGE_H -#define _M68K_PAGE_H - -#include <linux/const.h> - -/* PAGE_SHIFT determines the page size */ -#ifndef CONFIG_SUN3 -#define PAGE_SHIFT (12) -#else -#define PAGE_SHIFT (13) -#endif -#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT) -#define PAGE_MASK (~(PAGE_SIZE-1)) - -#include <asm/setup.h> - -#if PAGE_SHIFT < 13 -#define THREAD_SIZE (8192) -#else -#define THREAD_SIZE PAGE_SIZE -#endif - -#ifndef __ASSEMBLY__ - -#include <linux/compiler.h> - -#include <asm/module.h> - -#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; -typedef struct page *pgtable_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) } ) - -#endif /* !__ASSEMBLY__ */ - -#include <asm/page_offset.h> - -#define PAGE_OFFSET (PAGE_OFFSET_RAW) - -#ifndef __ASSEMBLY__ - -extern unsigned long m68k_memoffset; - -#ifndef CONFIG_SUN3 - -#define WANT_PAGE_VIRTUAL - -static inline unsigned long ___pa(void *vaddr) -{ - unsigned long paddr; - asm ( - "1: addl #0,%0\n" - m68k_fixup(%c2, 1b+2) - : "=r" (paddr) - : "0" (vaddr), "i" (m68k_fixup_memoffset)); - return paddr; -} -#define __pa(vaddr) ___pa((void *)(vaddr)) -static inline void *__va(unsigned long paddr) -{ - void *vaddr; - asm ( - "1: subl #0,%0\n" - m68k_fixup(%c2, 1b+2) - : "=r" (vaddr) - : "0" (paddr), "i" (m68k_fixup_memoffset)); - return vaddr; -} - -#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) - -extern int m68k_virt_to_node_shift; - -#ifdef CONFIG_SINGLE_MEMORY_CHUNK -#define __virt_to_node(addr) (&pg_data_map[0]) -#else -extern struct pglist_data *pg_data_table[]; - -static inline __attribute_const__ int __virt_to_node_shift(void) -{ - int shift; - - asm ( - "1: moveq #0,%0\n" - m68k_fixup(%c1, 1b) - : "=d" (shift) - : "i" (m68k_fixup_vnode_shift)); - return shift; -} - -#define __virt_to_node(addr) (pg_data_table[(unsigned long)(addr) >> __virt_to_node_shift()]) -#endif - -#define virt_to_page(addr) ({ \ - pfn_to_page(virt_to_pfn(addr)); \ -}) -#define page_to_virt(page) ({ \ - pfn_to_virt(page_to_pfn(page)); \ -}) - -#define pfn_to_page(pfn) ({ \ - unsigned long __pfn = (pfn); \ - struct pglist_data *pgdat; \ - pgdat = __virt_to_node((unsigned long)pfn_to_virt(__pfn)); \ - pgdat->node_mem_map + (__pfn - pgdat->node_start_pfn); \ -}) -#define page_to_pfn(_page) ({ \ - struct page *__p = (_page); \ - struct pglist_data *pgdat; \ - pgdat = &pg_data_map[page_to_nid(__p)]; \ - ((__p) - pgdat->node_mem_map) + pgdat->node_start_pfn; \ -}) - -#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) - -#include <asm-generic/page.h> - -#endif /* _M68K_PAGE_H */ |