1 files changed, 46 insertions, 0 deletions

diff --git a/include/asm-arm/arch-ixp23xx/memory.h b/include/asm-arm/arch-ixp23xx/memory.h
new file mode 100644
index 000000000000..bebcf0aa0d72
--- /dev/null
+++ b/include/asm-arm/arch-ixp23xx/memory.h
@@ -0,0 +1,46 @@
+/*
+ * include/asm-arm/arch-ixp23xx/memory.h
+ *
+ * Copyright (c) 2003-2004 Intel Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+#include <asm/hardware.h>
+
+/*
+ * Physical DRAM offset.
+ */
+#define PHYS_OFFSET             (0x00000000)
+
+
+/*
+ * 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.
+ */
+#ifndef __ASSEMBLY__
+
+#define __virt_to_bus(v)                                                \
+        ({ unsigned int ret;                                            \
+        ret = ((__virt_to_phys(v) - 0x00000000) +                       \
+         (*((volatile int *)IXP23XX_PCI_SDRAM_BAR) & 0xfffffff0));      \
+        ret; })
+
+#define __bus_to_virt(b)                                                \
+        ({ unsigned int data;                                           \
+        data = *((volatile int *)IXP23XX_PCI_SDRAM_BAR);                \
+         __phys_to_virt((((b - (data & 0xfffffff0)) + 0x00000000))); })
+
+#endif
+
+
+#endif