ARM: mmu: Share code for dma_(un)map_single()

Both ARM and ARM64 define DMA mapping/unmapping functions that are
exactly the same. Introduce mmu-common.c and move the code there so it
can be shared.

Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

4 files changed, 26 insertions, 33 deletions

diff --git a/arch/arm/cpu/Makefile b/arch/arm/cpu/Makefile
index a35db435c1..8e1af8bf8d 100644
--- a/arch/arm/cpu/Makefile
+++ b/arch/arm/cpu/Makefile
@@ -1,7 +1,7 @@
 obj-y += cpu.o
 
 obj-$(CONFIG_ARM_EXCEPTIONS) += exceptions$(S64).o interrupts$(S64).o
-obj-$(CONFIG_MMU) += mmu$(S64).o
+obj-$(CONFIG_MMU) += mmu$(S64).o mmu-common.o
 lwl-y += lowlevel$(S64).o
 obj-pbl-$(CONFIG_MMU) += mmu-early$(S64).o
 obj-pbl-$(CONFIG_CPU_32v7) += hyp.o
diff --git a/arch/arm/cpu/mmu-common.c b/arch/arm/cpu/mmu-common.c
new file mode 100644
index 0000000000..5d58129745
--- /dev/null
+++ b/arch/arm/cpu/mmu-common.c
@@ -0,0 +1,25 @@
+
+#define pr_fmt(fmt)	"mmu: " fmt
+
+#include <common.h>
+#include <dma-dir.h>
+#include <dma.h>
+#include <mmu.h>
+
+#include "mmu.h"
+
+dma_addr_t dma_map_single(struct device_d *dev, void *ptr, size_t size,
+			  enum dma_data_direction dir)
+{
+	unsigned long addr = (unsigned long)ptr;
+
+	dma_sync_single_for_device(addr, size, dir);
+
+	return addr;
+}
+
+void dma_unmap_single(struct device_d *dev, dma_addr_t addr, size_t size,
+		      enum dma_data_direction dir)
+{
+	dma_sync_single_for_cpu(addr, size, dir);
+}
diff --git a/arch/arm/cpu/mmu.c b/arch/arm/cpu/mmu.c
index 390ccc5813..f134e8bb38 100644
--- a/arch/arm/cpu/mmu.c
+++ b/arch/arm/cpu/mmu.c
@@ -555,19 +555,3 @@ void dma_sync_single_for_device(dma_addr_t address, size_t size,
 			outer_cache.clean_range(address, address + size);
 	}
 }
-
-dma_addr_t dma_map_single(struct device_d *dev, void *ptr, size_t size,
-			  enum dma_data_direction dir)
-{
-	unsigned long addr = (unsigned long)ptr;
-
-	dma_sync_single_for_device(addr, size, dir);
-
-	return addr;
-}
-
-void dma_unmap_single(struct device_d *dev, dma_addr_t addr, size_t size,
-		      enum dma_data_direction dir)
-{
-	dma_sync_single_for_cpu(addr, size, dir);
-}
diff --git a/arch/arm/cpu/mmu_64.c b/arch/arm/cpu/mmu_64.c
index b6f30d1b39..e2dd5b4d82 100644
--- a/arch/arm/cpu/mmu_64.c
+++ b/arch/arm/cpu/mmu_64.c
@@ -291,19 +291,3 @@ void dma_sync_single_for_device(dma_addr_t address, size_t size,
 	else
 		v8_flush_dcache_range(address, address + size - 1);
 }
-
-dma_addr_t dma_map_single(struct device_d *dev, void *ptr, size_t size,
-			  enum dma_data_direction dir)
-{
-	unsigned long addr = (unsigned long)ptr;
-
-	dma_sync_single_for_device(addr, size, dir);
-
-	return addr;
-}
-
-void dma_unmap_single(struct device_d *dev, dma_addr_t addr, size_t size,
-		      enum dma_data_direction dir)
-{
-	dma_sync_single_for_cpu(addr, size, dir);
-}