x86: implement dma_map_single through dma_ops
That's already the name of the game for x86_64. For i386,
we add a pci-base_32.c, that will hold the default operations.
The function call itself goes through dma-mapping.h , the common
header
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index aebd178..d320244 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -50,10 +50,20 @@
int is_phys;
};
+extern const struct dma_mapping_ops *dma_ops;
+
#ifdef CONFIG_X86_32
# include "dma-mapping_32.h"
#else
# include "dma-mapping_64.h"
#endif
+static inline dma_addr_t
+dma_map_single(struct device *hwdev, void *ptr, size_t size,
+ int direction)
+{
+ BUG_ON(!valid_dma_direction(direction));
+ return dma_ops->map_single(hwdev, ptr, size, direction);
+}
+
#endif