1 files changed, 79 insertions, 0 deletions
diff --git a/arch/arm/mach-ns9xxx/include/mach/hardware.h b/arch/arm/mach-ns9xxx/include/mach/hardware.h
new file mode 100644
index 00000000000..6dbb2030f56
--- /dev/null
+++ b/arch/arm/mach-ns9xxx/include/mach/hardware.h
@@ -0,0 +1,79 @@
+/*
+ * arch/arm/mach-ns9xxx/include/mach/hardware.h
+ *
+ * Copyright (C) 2006 by Digi International Inc.
+ * All rights reserved.
+ *
+ * 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_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H
+
+#include <asm/memory.h>
+
+/*
+ * NetSilicon NS9xxx internal mapping:
+ *
+ * physical                <--> virtual
+ * 0x90000000 - 0x906fffff <--> 0xf9000000 - 0xf96fffff
+ * 0xa0100000 - 0xa0afffff <--> 0xfa100000 - 0xfaafffff
+ */
+#define io_p2v(x)	(0xf0000000 \
+			 + (((x) & 0xf0000000) >> 4) \
+			 + ((x) & 0x00ffffff))
+
+#define io_v2p(x)	((((x) & 0x0f000000) << 4) \
+			 + ((x) & 0x00ffffff))
+
+#define __REGSHIFT(mask)	((mask) & (-(mask)))
+
+#define __REGBIT(bit)		((u32)1 << (bit))
+#define __REGBITS(hbit, lbit)	((((u32)1 << ((hbit) - (lbit) + 1)) - 1) << (lbit))
+#define __REGVAL(mask, value)	(((value) * __REGSHIFT(mask)) & (mask))
+
+#ifndef __ASSEMBLY__
+
+#  define __REG(x)	((void __iomem __force *)io_p2v((x)))
+#  define __REG2(x, y)	((void __iomem __force *)(io_p2v((x)) + 4 * (y)))
+
+#  define __REGSET(var, field, value)					\
+	((var) = (((var) & ~((field) & ~(value))) | (value)))
+
+#  define REGSET(var, reg, field, value)				\
+	__REGSET(var, reg ## _ ## field, reg ## _ ## field ## _ ## value)
+
+#  define REGSET_IDX(var, reg, field, idx, value)			\
+	__REGSET(var, reg ## _ ## field((idx)), reg ## _ ## field ## _ ## value((idx)))
+
+#  define REGSETIM(var, reg, field, value)				\
+	__REGSET(var, reg ## _ ## field, __REGVAL(reg ## _ ## field, (value)))
+
+#  define REGSETIM_IDX(var, reg, field, idx, value)			\
+	__REGSET(var, reg ## _ ## field((idx)), __REGVAL(reg ## _ ## field((idx)), (value)))
+
+#  define __REGGET(var, field)						\
+	(((var) & (field)))
+
+#  define REGGET(var, reg, field)					\
+	 __REGGET(var, reg ## _ ## field)
+
+#  define REGGET_IDX(var, reg, field, idx)				\
+	 __REGGET(var, reg ## _ ## field((idx)))
+
+#  define REGGETIM(var, reg, field)					\
+	 __REGGET(var, reg ## _ ## field) / __REGSHIFT(reg ## _ ## field)
+
+#  define REGGETIM_IDX(var, reg, field, idx)				\
+	 __REGGET(var, reg ## _ ## field((idx))) /			\
+	 __REGSHIFT(reg ## _ ## field((idx)))
+
+#else
+
+#  define __REG(x)	io_p2v(x)
+#  define __REG2(x, y)	io_p2v((x) + 4 * (y))
+
+#endif
+
+#endif /* ifndef __ASM_ARCH_HARDWARE_H */