--- /dev/null
+/*
+ * include/asm-arm/arch-ixp4xx/dma.h
+ *
+ * Copyright (C) 2001-2004 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 version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+#ifndef __ASM_ARCH_DMA_H
+#define __ASM_ARCH_DMA_H
+
+#include <linux/config.h>
+#include <linux/device.h>
+#include <linux/pci.h>
+#include <asm/page.h>
+#include <asm/sizes.h>
+#include <asm/hardware.h>
+
+#define MAX_DMA_ADDRESS (PAGE_OFFSET + SZ_64M)
+
+/* No DMA */
+#define MAX_DMA_CHANNELS 0
+
+/*
+ * Only first 64MB of memory can be accessed via PCI.
+ * We use GFP_DMA to allocate safe buffers to do map/unmap.
+ * This is really ugly and we need a better way of specifying
+ * DMA-capable regions of memory.
+ */
+static inline void __arch_adjust_zones(int node, unsigned long *zone_size,
+ unsigned long *zhole_size)
+{
+ unsigned int sz = SZ_64M >> PAGE_SHIFT;
+
+ /*
+ * Only adjust if > 64M on current system
+ */
+ if (node || (zone_size[0] <= sz))
+ return;
+
+ zone_size[1] = zone_size[0] - sz;
+ zone_size[0] = sz;
+ zhole_size[1] = zhole_size[0];
+ zhole_size[0] = 0;
+}
+
+#define arch_adjust_zones(node, size, holes) \
+ __arch_adjust_zones(node, size, holes)
+
+#endif /* _ASM_ARCH_DMA_H */