microblaze: use asm-generic/cacheflush.h

Microblaze needs almost no cache flushing routines of its own.  Rely on
asm-generic/cacheflush.h for the defaults.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Simek <monstr@monstr.eu>
Link: http://lkml.kernel.org/r/20200515143646.3857579-14-hch@lst.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/microblaze/include/asm/cacheflush.h b/arch/microblaze/include/asm/cacheflush.h
index 11f56c8..39f8fb6 100644 (file)
--- a/arch/microblaze/include/asm/cacheflush.h
+++ b/arch/microblaze/include/asm/cacheflush.h
@@ -57,9 +57,6 @@ void microblaze_cache_init(void);
 #define invalidate_icache()                            mbc->iin();
 #define invalidate_icache_range(start, end)            mbc->iinr(start, end);
 
-#define flush_icache_user_range(vma, pg, adr, len)     flush_icache();
-#define flush_icache_page(vma, pg)                     do { } while (0)
-
 #define enable_dcache()                                        mbc->de();
 #define disable_dcache()                               mbc->dd();
 /* FIXME for LL-temac driver */
@@ -77,27 +74,9 @@ do { \
        flush_dcache_range((unsigned) (addr), (unsigned) (addr) + PAGE_SIZE); \
 } while (0);
 
-#define flush_dcache_mmap_lock(mapping)                do { } while (0)
-#define flush_dcache_mmap_unlock(mapping)      do { } while (0)
-
-#define flush_cache_dup_mm(mm)                         do { } while (0)
-#define flush_cache_vmap(start, end)                   do { } while (0)
-#define flush_cache_vunmap(start, end)                 do { } while (0)
-#define flush_cache_mm(mm)                     do { } while (0)
-
 #define flush_cache_page(vma, vmaddr, pfn) \
        flush_dcache_range(pfn << PAGE_SHIFT, (pfn << PAGE_SHIFT) + PAGE_SIZE);
 
-/* MS: kgdb code use this macro, wrong len with FLASH */
-#if 0
-#define flush_cache_range(vma, start, len)     {       \
-       flush_icache_range((unsigned) (start), (unsigned) (start) + (len)); \
-       flush_dcache_range((unsigned) (start), (unsigned) (start) + (len)); \
-}
-#endif
-
-#define flush_cache_range(vma, start, len) do { } while (0)
-
 static inline void copy_to_user_page(struct vm_area_struct *vma,
                                     struct page *page, unsigned long vaddr,
                                     void *dst, void *src, int len)
@@ -109,12 +88,8 @@ static inline void copy_to_user_page(struct vm_area_struct *vma,
                flush_dcache_range(addr, addr + PAGE_SIZE);
        }
 }
+#define copy_to_user_page copy_to_user_page
 
-static inline void copy_from_user_page(struct vm_area_struct *vma,
-                                      struct page *page, unsigned long vaddr,
-                                      void *dst, void *src, int len)
-{
-       memcpy(dst, src, len);
-}
+#include <asm-generic/cacheflush.h>
 
 #endif /* _ASM_MICROBLAZE_CACHEFLUSH_H */