aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-ixp2000/include/mach/memory.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-ixp2000/include/mach/memory.h')
-rw-r--r--arch/arm/mach-ixp2000/include/mach/memory.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp2000/include/mach/memory.h b/arch/arm/mach-ixp2000/include/mach/memory.h
new file mode 100644
index 00000000000..241529a7c52
--- /dev/null
+++ b/arch/arm/mach-ixp2000/include/mach/memory.h
@@ -0,0 +1,34 @@
+/*
+ * arch/arm/mach-ixp2000/include/mach/memory.h
+ *
+ * Copyright (c) 2002 Intel Corp.
+ * Copyright (c) 2003-2004 MontaVista Software, Inc.
+ *
+ * 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
+
+#define PHYS_OFFSET UL(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.
+ */
+#include <mach/ixp2000-regs.h>
+
+#define __virt_to_bus(v) \
+ (((__virt_to_phys(v) - 0x0) + (*IXP2000_PCI_SDRAM_BAR & 0xfffffff0)))
+
+#define __bus_to_virt(b) \
+ __phys_to_virt((((b - (*IXP2000_PCI_SDRAM_BAR & 0xfffffff0)) + 0x0)))
+
+#endif
+