1/* 2 * include/asm-arm/arch-ns9xxx/hardware.h 3 * 4 * Copyright (C) 2006 by Digi International Inc. 5 * All rights reserved. 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License version 2 as published by 9 * the Free Software Foundation. 10 */ 11#ifndef __ASM_ARCH_HARDWARE_H 12#define __ASM_ARCH_HARDWARE_H 13 14#include <asm/memory.h> 15 16/* 17 * NetSilicon NS9xxx internal mapping: 18 * 19 * physical <--> virtual 20 * 0x90000000 - 0x906fffff <--> 0xf9000000 - 0xf96fffff 21 * 0xa0100000 - 0xa0afffff <--> 0xfa100000 - 0xfaafffff 22 */ 23#define io_p2v(x) (0xf0000000 \ 24 + (((x) & 0xf0000000) >> 4) \ 25 + ((x) & 0x00ffffff)) 26 27#define io_v2p(x) ((((x) & 0x0f000000) << 4) \ 28 + ((x) & 0x00ffffff)) 29 30#define __REGBIT(bit) ((u32)1 << (bit)) 31#define __REGBITS(hbit, lbit) ((((u32)1 << ((hbit) - (lbit) + 1)) - 1) << (lbit)) 32#define __REGVAL(mask, value) (((value) * ((mask) & (-(mask))) & (mask))) 33 34#ifndef __ASSEMBLY__ 35 36# define __REG(x) (*((volatile u32 *)io_p2v((x)))) 37# define __REG2(x, y) (*((volatile u32 *)io_p2v((x)) + (y))) 38 39# define __REGB(x) (*((volatile u8 *)io_p2v((x)))) 40# define __REGB2(x) (*((volatile u8 *)io_p2v((x)) + (y))) 41 42# define REGSET(var, reg, field, value) \ 43 ((var) = (((var) \ 44 & ~(reg ## _ ## field & \ 45 ~ reg ## _ ## field ## _ ## value)) \ 46 | (reg ## _ ## field ## _ ## value))) 47 48# define REGSETIM(var, reg, field, value) \ 49 ((var) = (((var) \ 50 & ~(reg ## _ ## field & \ 51 ~(__REGVAL(reg ## _ ## field, value)))) \ 52 | (__REGVAL(reg ## _ ## field, value)))) 53 54# define REGGET(var, reg, field) \ 55 ((var & (reg ## _ ## field)) / \ 56 ((reg ## _ ## field) & (-(reg ## _ ## field)))) 57 58#else 59 60# define __REG(x) io_p2v(x) 61# define __REG2(x, y) io_p2v((x) + (y)) 62 63# define __REGB(x) __REG((x)) 64# define __REGB2(x, y) __REG2((x), (y)) 65 66#endif 67 68#endif /* ifndef __ASM_ARCH_HARDWARE_H */ 69