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/*
* 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(var, reg, field) \
((var & (reg ## _ ## field)) / \
((reg ## _ ## field) & (-(reg ## _ ## 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 */
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