patch-2.4.0-test9 linux/include/asm-arm/proc-armv/io.h
Next file: linux/include/asm-arm/proc-armv/locks.h
Previous file: linux/include/asm-arm/proc-armv/domain.h
Back to the patch index
Back to the overall index
- Lines: 36
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.4.0-test8/linux/include/asm-arm/proc-armv/io.h
- Orig date:
Mon Aug 30 18:15:21 1999
diff -u --recursive --new-file v2.4.0-test8/linux/include/asm-arm/proc-armv/io.h linux/include/asm-arm/proc-armv/io.h
@@ -1,35 +0,0 @@
-/*
- * linux/include/asm-arm/proc-armv/io.h
- */
-
-/*
- * The caches on some architectures aren't dma-coherent and have need to
- * handle this in software. There are two 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,
- */
-
-#include <asm/proc-fns.h>
-
-#define dma_cache_inv(start, size) \
- do { cpu_cache_purge_area((unsigned long)(start), \
- ((unsigned long)(start)+(size))); } while (0)
-
-#define dma_cache_wback(start, size) \
- do { cpu_cache_wback_area((unsigned long)(start), \
- ((unsigned long)(start)+(size))); } while (0)
-
-#define dma_cache_wback_inv(start, size) \
- do { cpu_flush_cache_area((unsigned long)(start), \
- ((unsigned long)(start)+(size)), 0); } while (0)
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)