Merge http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm into for-rmk

1 files changed, 48 insertions, 0 deletions

diff --git a/arch/arm/mach-ixp23xx/include/mach/memory.h b/arch/arm/mach-ixp23xx/include/mach/memory.h
new file mode 100644
index 00000000000..9d40115f7eb
--- /dev/null
+++ b/arch/arm/mach-ixp23xx/include/mach/memory.h
@@ -0,0 +1,48 @@
+/*
+ * arch/arm/mach-ixp23xx/include/mach/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 <mach/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))); })
+
+#define arch_is_coherent()	1
+
+#endif
+
+
+#endif