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/* include/asm-arm/arch-lh7a40x/hardware.h
*
* Copyright (C) 2004 Coastal Environmental Systems
*
* [ Substantially cribbed from include/asm-arm/arch-pxa/hardware.h ]
*
* 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/sizes.h> /* Added for the sake of amba-clcd driver */
#define io_p2v(x) (0xf0000000 | (((x) & 0xfff00000) >> 4) | ((x) & 0x0000ffff))
#define io_v2p(x) ( (((x) & 0x0fff0000) << 4) | ((x) & 0x0000ffff))
#ifdef __ASSEMBLY__
# define __REG(x) io_p2v(x)
# define __PREG(x) io_v2p(x)
#else
# if 0
# define __REG(x) (*((volatile u32 *)io_p2v(x)))
# else
/*
* This __REG() version gives the same results as the one above, except
* that we are fooling gcc somehow so it generates far better and smaller
* assembly code for access to contigous registers. It's a shame that gcc
* doesn't guess this by itself.
*/
#include <asm/types.h>
typedef struct { volatile u32 offset[4096]; } __regbase;
# define __REGP(x) ((__regbase *)((x)&~4095))->offset[((x)&4095)>>2]
# define __REG(x) __REGP(io_p2v(x))
typedef struct { volatile u16 offset[4096]; } __regbase16;
# define __REGP16(x) ((__regbase16 *)((x)&~4095))->offset[((x)&4095)>>1]
# define __REG16(x) __REGP16(io_p2v(x))
typedef struct { volatile u8 offset[4096]; } __regbase8;
# define __REGP8(x) ((__regbase8 *)((x)&~4095))->offset[(x)&4095]
# define __REG8(x) __REGP8(io_p2v(x))
#endif
/* Let's kick gcc's ass again... */
# define __REG2(x,y) \
( __builtin_constant_p(y) ? (__REG((x) + (y))) \
: (*(volatile u32 *)((u32)&__REG(x) + (y))) )
# define __PREG(x) (io_v2p((u32)&(x)))
#endif
#define MASK_AND_SET(v,m,s) (v) = ((v)&~(m))|(s)
#include "registers.h"
#endif /* _ASM_ARCH_HARDWARE_H */
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