[3/5] arm: add mm API for DMA to vmalloc/vmap areas

Commit Message

James Bottomley Sept. 9, 2009, 3:20 a.m. UTC

ARM cannot prevent cache movein, so this patch implements both the
flush and invalidate pieces of the API.

Signed-off-by: James Bottomley <[e-mail]>
---
 arch/arm/include/asm/cacheflush.h |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

Patch

diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index 1a711ea..1104ee9 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -436,6 +436,16 @@  static inline void flush_kernel_dcache_page(struct page *page)
 	if ((cache_is_vivt() || cache_is_vipt_aliasing()) && !PageHighMem(page))
 		__cpuc_flush_dcache_page(page_address(page));
 }
+static inline void flush_kernel_dcache_addr(void *addr)
+{
+	if ((cache_is_vivt() || cache_is_vipt_aliasing()))
+		__cpuc_flush_dcache_page(addr);
+}
+static inline void invalidate_kernel_dcache_addr(void *addr)
+{
+	if ((cache_is_vivt() || cache_is_vipt_aliasing()))
+		__cpuc_flush_dcache_page(addr);
+}
 
 #define flush_dcache_mmap_lock(mapping) \
 	spin_lock_irq(&(mapping)->tree_lock)