1/* arch/arm/mach-lh7a40x/include/mach/hardware.h 2 * 3 * Copyright (C) 2004 Coastal Environmental Systems 4 * 5 * [ Substantially cribbed from arch/arm/mach-pxa/include/mach/hardware.h ] 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * version 2 as published by the Free Software Foundation. 10 * 11 */ 12 13#ifndef __ASM_ARCH_HARDWARE_H 14#define __ASM_ARCH_HARDWARE_H 15 16#include <asm/sizes.h> /* Added for the sake of amba-clcd driver */ 17 18#define io_p2v(x) (0xf0000000 | (((x) & 0xfff00000) >> 4) | ((x) & 0x0000ffff)) 19#define io_v2p(x) ( (((x) & 0x0fff0000) << 4) | ((x) & 0x0000ffff)) 20 21#ifdef __ASSEMBLY__ 22 23# define __REG(x) io_p2v(x) 24# define __PREG(x) io_v2p(x) 25 26#else 27 28/* 29 * This __REG() version gives the same results as the one above, except 30 * that we are fooling gcc somehow so it generates far better and smaller 31 * assembly code for access to contiguous registers. It's a shame that gcc 32 * doesn't guess this by itself. 33 */ 34#include <asm/types.h> 35typedef struct { volatile u32 offset[4096]; } __regbase; 36# define __REGP(x) ((__regbase *)((x)&~4095))->offset[((x)&4095)>>2] 37# define __REG(x) __REGP(io_p2v(x)) 38typedef struct { volatile u16 offset[4096]; } __regbase16; 39# define __REGP16(x) ((__regbase16 *)((x)&~4095))->offset[((x)&4095)>>1] 40# define __REG16(x) __REGP16(io_p2v(x)) 41typedef struct { volatile u8 offset[4096]; } __regbase8; 42# define __REGP8(x) ((__regbase8 *)((x)&~4095))->offset[(x)&4095] 43# define __REG8(x) __REGP8(io_p2v(x)) 44 45/* Let's kick gcc's ass again... */ 46# define __REG2(x,y) \ 47 ( __builtin_constant_p(y) ? (__REG((x) + (y))) \ 48 : (*(volatile u32 *)((u32)&__REG(x) + (y))) ) 49 50# define __PREG(x) (io_v2p((u32)&(x))) 51 52#endif 53 54#define MASK_AND_SET(v,m,s) (v) = ((v)&~(m))|(s) 55 56#include "registers.h" 57 58#endif /* _ASM_ARCH_HARDWARE_H */ 59