diff options
Diffstat (limited to 'include/asm-m68k/cacheflush.h')
| -rw-r--r-- | include/asm-m68k/cacheflush.h | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/include/asm-m68k/cacheflush.h b/include/asm-m68k/cacheflush.h deleted file mode 100644 index 16bf375fdbe..00000000000 --- a/include/asm-m68k/cacheflush.h +++ /dev/null @@ -1,156 +0,0 @@ -#ifndef _M68K_CACHEFLUSH_H -#define _M68K_CACHEFLUSH_H - -#include <linux/mm.h> - -/* cache code */ -#define FLUSH_I_AND_D (0x00000808) -#define FLUSH_I (0x00000008) - -/* - * Cache handling functions - */ - -static inline void flush_icache(void) -{ - if (CPU_IS_040_OR_060) - asm volatile ( "nop\n" - " .chip 68040\n" - " cpusha %bc\n" - " .chip 68k"); - else { - unsigned long tmp; - asm volatile ( "movec %%cacr,%0\n" - " or.w %1,%0\n" - " movec %0,%%cacr" - : "=&d" (tmp) - : "id" (FLUSH_I)); - } -} - -/* - * invalidate the cache for the specified memory range. - * It starts at the physical address specified for - * the given number of bytes. - */ -extern void cache_clear(unsigned long paddr, int len); -/* - * push any dirty cache in the specified memory range. - * It starts at the physical address specified for - * the given number of bytes. - */ -extern void cache_push(unsigned long paddr, int len); - -/* - * push and invalidate pages in the specified user virtual - * memory range. - */ -extern void cache_push_v(unsigned long vaddr, int len); - -/* This is needed whenever the virtual mapping of the current - process changes. */ -#define __flush_cache_all() \ -({ \ - if (CPU_IS_040_OR_060) \ - __asm__ __volatile__("nop\n\t" \ - ".chip 68040\n\t" \ - "cpusha %dc\n\t" \ - ".chip 68k"); \ - else { \ - unsigned long _tmp; \ - __asm__ __volatile__("movec %%cacr,%0\n\t" \ - "orw %1,%0\n\t" \ - "movec %0,%%cacr" \ - : "=&d" (_tmp) \ - : "di" (FLUSH_I_AND_D)); \ - } \ -}) - -#define __flush_cache_030() \ -({ \ - if (CPU_IS_020_OR_030) { \ - unsigned long _tmp; \ - __asm__ __volatile__("movec %%cacr,%0\n\t" \ - "orw %1,%0\n\t" \ - "movec %0,%%cacr" \ - : "=&d" (_tmp) \ - : "di" (FLUSH_I_AND_D)); \ - } \ -}) - -#define flush_cache_all() __flush_cache_all() - -#define flush_cache_vmap(start, end) flush_cache_all() -#define flush_cache_vunmap(start, end) flush_cache_all() - -static inline void flush_cache_mm(struct mm_struct *mm) -{ - if (mm == current->mm) - __flush_cache_030(); -} - -#define flush_cache_dup_mm(mm) flush_cache_mm(mm) - -/* flush_cache_range/flush_cache_page must be macros to avoid - a dependency on linux/mm.h, which includes this file... */ -static inline void flush_cache_range(struct vm_area_struct *vma, - unsigned long start, - unsigned long end) -{ - if (vma->vm_mm == current->mm) - __flush_cache_030(); -} - -static inline void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn) -{ - if (vma->vm_mm == current->mm) - __flush_cache_030(); -} - - -/* Push the page at kernel virtual address and clear the icache */ -/* RZ: use cpush %bc instead of cpush %dc, cinv %ic */ -static inline void __flush_page_to_ram(void *vaddr) -{ - if (CPU_IS_040_OR_060) { - __asm__ __volatile__("nop\n\t" - ".chip 68040\n\t" - "cpushp %%bc,(%0)\n\t" - ".chip 68k" - : : "a" (__pa(vaddr))); - } else { - unsigned long _tmp; - __asm__ __volatile__("movec %%cacr,%0\n\t" - "orw %1,%0\n\t" - "movec %0,%%cacr" - : "=&d" (_tmp) - : "di" (FLUSH_I)); - } -} - -#define flush_dcache_page(page) __flush_page_to_ram(page_address(page)) -#define flush_dcache_mmap_lock(mapping) do { } while (0) -#define flush_dcache_mmap_unlock(mapping) do { } while (0) -#define flush_icache_page(vma, page) __flush_page_to_ram(page_address(page)) - -extern void flush_icache_user_range(struct vm_area_struct *vma, struct page *page, - unsigned long addr, int len); -extern void flush_icache_range(unsigned long address, unsigned long endaddr); - -static inline void copy_to_user_page(struct vm_area_struct *vma, - struct page *page, unsigned long vaddr, - void *dst, void *src, int len) -{ - flush_cache_page(vma, vaddr, page_to_pfn(page)); - memcpy(dst, src, len); - flush_icache_user_range(vma, page, vaddr, len); -} -static inline void copy_from_user_page(struct vm_area_struct *vma, - struct page *page, unsigned long vaddr, - void *dst, void *src, int len) -{ - flush_cache_page(vma, vaddr, page_to_pfn(page)); - memcpy(dst, src, len); -} - -#endif /* _M68K_CACHEFLUSH_H */ |