1 files changed, 67 insertions, 0 deletions

diff --git a/include/asm-arm/arch-ns9xxx/hardware.h b/include/asm-arm/arch-ns9xxx/hardware.h
new file mode 100644
index 000000000000..6819da7c48d4
--- /dev/null
+++ b/include/asm-arm/arch-ns9xxx/hardware.h
@@ -0,0 +1,67 @@
+/*
+ * include/asm-arm/arch-ns9xxx/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 __REGBIT(bit)           ((u32)1 << (bit))
+#define __REGBITS(hbit, lbit)   ((((u32)1 << ((hbit) - (lbit) + 1)) - 1) << (lbit))
+#define __REGVAL(mask, value)   (((value) * ((mask) & (-(mask))) & (mask)))
+
+#ifndef __ASSEMBLY__
+
+#  define __REG(x)      (*((volatile u32 *)io_p2v((x))))
+#  define __REG2(x, y)  (*((volatile u32 *)io_p2v((x)) + (y)))
+
+#  define __REGB(x)     (*((volatile u8 *)io_p2v((x))))
+#  define __REGB2(x)    (*((volatile u8 *)io_p2v((x)) + (y)))
+
+#  define REGSET(var, reg, field, value)                                \
+        ((var) = (((var)                                                \
+                   & ~(reg ## _ ## field &                              \
+                       ~ reg ## _ ## field ## _ ## value))              \
+                  | (reg ## _ ## field ## _ ## value)))
+
+#  define REGSETIM(var, reg, field, value)                              \
+        ((var) = (((var)                                                \
+                   & ~(reg ## _ ## field &                              \
+                       ~(__REGVAL(reg ## _ ## field, value))))          \
+                  | (__REGVAL(reg ## _ ## field, value))))
+
+#  define REGGET(reg, field)                                            \
+        ((reg & (reg ## _ ## field)) / (field & (-field)))
+
+#else
+
+#  define __REG(x)      io_p2v(x)
+#  define __REG2(x, y)  io_p2v((x) + (y))
+
+#  define __REGB(x)     __REG((x))
+#  define __REGB2(x, y) __REG2((x), (y))
+
+#endif
+
+#endif /* ifndef __ASM_ARCH_HARDWARE_H */