/*
* 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
/*
* 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 */
