#ifndef __ASM_ARCH_MEMORY_H
#define __ASM_ARCH_MEMORY_H
+#include <asm/sizes.h>
+
/*
* Physical DRAM offset.
*/
#define PHYS_OFFSET (0x00000000UL)
+#ifndef __ASSEMBLY__
+
+/*
+ * 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)
+
+#define ISA_DMA_THRESHOLD (SZ_64M - 1)
+
+#endif
+
/*
* Virtual view <-> DMA view memory address translations
* virt_to_bus: Used to translate the virtual address to an