68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/*
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* include/asm-arm/arch-ns9xxx/hardware.h
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*
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* Copyright (C) 2006 by Digi International Inc.
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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#ifndef __ASM_ARCH_HARDWARE_H
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#define __ASM_ARCH_HARDWARE_H
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#include <asm/memory.h>
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/*
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* NetSilicon NS9xxx internal mapping:
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*
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* physical <--> virtual
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* 0x90000000 - 0x906fffff <--> 0xf9000000 - 0xf96fffff
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* 0xa0100000 - 0xa0afffff <--> 0xfa100000 - 0xfaafffff
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*/
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#define io_p2v(x) (0xf0000000 \
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+ (((x) & 0xf0000000) >> 4) \
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+ ((x) & 0x00ffffff))
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#define io_v2p(x) ((((x) & 0x0f000000) << 4) \
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+ ((x) & 0x00ffffff))
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#define __REGBIT(bit) ((u32)1 << (bit))
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#define __REGBITS(hbit, lbit) ((((u32)1 << ((hbit) - (lbit) + 1)) - 1) << (lbit))
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#define __REGVAL(mask, value) (((value) * ((mask) & (-(mask))) & (mask)))
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#ifndef __ASSEMBLY__
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# define __REG(x) (*((volatile u32 *)io_p2v((x))))
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# define __REG2(x, y) (*((volatile u32 *)io_p2v((x)) + (y)))
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# define __REGB(x) (*((volatile u8 *)io_p2v((x))))
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# define __REGB2(x) (*((volatile u8 *)io_p2v((x)) + (y)))
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# define REGSET(var, reg, field, value) \
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((var) = (((var) \
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& ~(reg ## _ ## field & \
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~ reg ## _ ## field ## _ ## value)) \
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| (reg ## _ ## field ## _ ## value)))
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# define REGSETIM(var, reg, field, value) \
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((var) = (((var) \
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& ~(reg ## _ ## field & \
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~(__REGVAL(reg ## _ ## field, value)))) \
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| (__REGVAL(reg ## _ ## field, value))))
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# define REGGET(reg, field) \
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((reg & (reg ## _ ## field)) / (field & (-field)))
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#else
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# define __REG(x) io_p2v(x)
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# define __REG2(x, y) io_p2v((x) + (y))
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# define __REGB(x) __REG((x))
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# define __REGB2(x, y) __REG2((x), (y))
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#endif
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#endif /* ifndef __ASM_ARCH_HARDWARE_H */
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