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-rw-r--r--include/asm-sh64/io.h48
1 files changed, 0 insertions, 48 deletions
diff --git a/include/asm-sh64/io.h b/include/asm-sh64/io.h
index 3de3ad99f45..7bd7314d38c 100644
--- a/include/asm-sh64/io.h
+++ b/include/asm-sh64/io.h
@@ -182,54 +182,6 @@ unsigned long onchip_remap(unsigned long addr, unsigned long size, const char* n
extern void onchip_unmap(unsigned long vaddr);
/*
- * The caches on some architectures aren't dma-coherent and have need to
- * handle this in software. There are three types of operations that
- * can be applied to dma buffers.
- *
- * - dma_cache_wback_inv(start, size) makes caches and RAM coherent by
- * writing the content of the caches back to memory, if necessary.
- * The function also invalidates the affected part of the caches as
- * necessary before DMA transfers from outside to memory.
- * - dma_cache_inv(start, size) invalidates the affected parts of the
- * caches. Dirty lines of the caches may be written back or simply
- * be discarded. This operation is necessary before dma operations
- * to the memory.
- * - dma_cache_wback(start, size) writes back any dirty lines but does
- * not invalidate the cache. This can be used before DMA reads from
- * memory,
- */
-
-static __inline__ void dma_cache_wback_inv (unsigned long start, unsigned long size)
-{
- unsigned long s = start & L1_CACHE_ALIGN_MASK;
- unsigned long e = (start + size) & L1_CACHE_ALIGN_MASK;
-
- for (; s <= e; s += L1_CACHE_BYTES)
- asm volatile ("ocbp %0, 0" : : "r" (s));
-}
-
-static __inline__ void dma_cache_inv (unsigned long start, unsigned long size)
-{
- // Note that caller has to be careful with overzealous
- // invalidation should there be partial cache lines at the extremities
- // of the specified range
- unsigned long s = start & L1_CACHE_ALIGN_MASK;
- unsigned long e = (start + size) & L1_CACHE_ALIGN_MASK;
-
- for (; s <= e; s += L1_CACHE_BYTES)
- asm volatile ("ocbi %0, 0" : : "r" (s));
-}
-
-static __inline__ void dma_cache_wback (unsigned long start, unsigned long size)
-{
- unsigned long s = start & L1_CACHE_ALIGN_MASK;
- unsigned long e = (start + size) & L1_CACHE_ALIGN_MASK;
-
- for (; s <= e; s += L1_CACHE_BYTES)
- asm volatile ("ocbwb %0, 0" : : "r" (s));
-}
-
-/*
* Convert a physical pointer to a virtual kernel pointer for /dev/mem
* access
*/