arm: add mm API for DMA to vmalloc/vmap areas
ARM cannot prevent cache movein, so this patch implements both the
flush and invalidate pieces of the API.
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index 730aefc..4ae503c 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -432,6 +432,16 @@
: "r" (0));
#endif
}
+static inline void flush_kernel_vmap_range(void *addr, int size)
+{
+ if ((cache_is_vivt() || cache_is_vipt_aliasing()))
+ __cpuc_flush_dcache_area(addr, (size_t)size);
+}
+static inline void invalidate_kernel_vmap_range(void *addr, int size)
+{
+ if ((cache_is_vivt() || cache_is_vipt_aliasing()))
+ __cpuc_flush_dcache_area(addr, (size_t)size);
+}
#define ARCH_HAS_FLUSH_ANON_PAGE
static inline void flush_anon_page(struct vm_area_struct *vma,