1 files changed, 65 insertions, 0 deletions
diff --git a/arch/arm/mach-stmp3xxx/include/mach/memory.h b/arch/arm/mach-stmp3xxx/include/mach/memory.h
new file mode 100644
index 000000000000..591130440844
--- /dev/null
+++ b/arch/arm/mach-stmp3xxx/include/mach/memory.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved.
+ */
+
+/*
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+#include <asm/page.h>
+#include <asm/sizes.h>
+
+/*
+ * Physical DRAM offset.
+ */
+#define PHYS_OFFSET	UL(0x40000000)
+#define BUS_OFFSET	UL(0x40000000)
+
+#ifndef __ASSEMBLY__
+
+#ifdef CONFIG_DMA_ZONE_SIZE
+#define MXC_DMA_ZONE_SIZE	((CONFIG_DMA_ZONE_SIZE * SZ_1M) >> PAGE_SHIFT)
+#else
+#define MXC_DMA_ZONE_SIZE	((12 * SZ_1M) >> PAGE_SHIFT)
+#endif
+
+static inline void __arch_adjust_zones(int node, unsigned long *zone_size,
+				       unsigned long *zhole_size)
+{
+	if (node != 0)
+		return;
+	/* Create separate zone to reserve memory for DMA */
+	zone_size[1] = zone_size[0] - MXC_DMA_ZONE_SIZE;
+	zone_size[0] = MXC_DMA_ZONE_SIZE;
+	zhole_size[1] = zhole_size[0];
+	zhole_size[0] = 0;
+}
+
+#define arch_adjust_zones(node, size, holes) \
+	__arch_adjust_zones(node, size, holes)
+
+#endif
+
+/*
+ * Virtual view <-> DMA view memory address translations
+ * virt_to_bus: Used to translate the virtual address to an
+ *		address suitable to be passed to set_dma_addr
+ * bus_to_virt: Used to convert an address for DMA operations
+ *		to an address that the kernel can use.
+ */
+#define __virt_to_bus(x)	 __virt_to_phys(x)
+#define __bus_to_virt(x)	 __phys_to_virt(x)
+
+#define ISA_DMA_THRESHOLD	(0x0003ffffULL)
+
+#define CONSISTENT_DMA_SIZE	SZ_32M
+
+#endif