77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
/*
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* arch/arm/mach-ns9xxx/include/mach/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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/*
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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 __REGSHIFT(mask) ((mask) & (-(mask)))
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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) * __REGSHIFT(mask)) & (mask))
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#ifndef __ASSEMBLY__
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# define __REG(x) ((void __iomem __force *)io_p2v((x)))
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# define __REG2(x, y) ((void __iomem __force *)(io_p2v((x)) + 4 * (y)))
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# define __REGSET(var, field, value) \
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((var) = (((var) & ~((field) & ~(value))) | (value)))
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# define REGSET(var, reg, field, value) \
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__REGSET(var, reg ## _ ## field, reg ## _ ## field ## _ ## value)
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# define REGSET_IDX(var, reg, field, idx, value) \
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__REGSET(var, reg ## _ ## field((idx)), reg ## _ ## field ## _ ## value((idx)))
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# define REGSETIM(var, reg, field, value) \
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__REGSET(var, reg ## _ ## field, __REGVAL(reg ## _ ## field, (value)))
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# define REGSETIM_IDX(var, reg, field, idx, value) \
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__REGSET(var, reg ## _ ## field((idx)), __REGVAL(reg ## _ ## field((idx)), (value)))
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# define __REGGET(var, field) \
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(((var) & (field)))
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# define REGGET(var, reg, field) \
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__REGGET(var, reg ## _ ## field)
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# define REGGET_IDX(var, reg, field, idx) \
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__REGGET(var, reg ## _ ## field((idx)))
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# define REGGETIM(var, reg, field) \
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__REGGET(var, reg ## _ ## field) / __REGSHIFT(reg ## _ ## field)
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# define REGGETIM_IDX(var, reg, field, idx) \
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__REGGET(var, reg ## _ ## field((idx))) / \
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__REGSHIFT(reg ## _ ## field((idx)))
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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) + 4 * (y))
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#endif
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#endif /* ifndef __ASM_ARCH_HARDWARE_H */
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