/* * Memory mapped IO * * (C) Copyright 2002 * Hyperion Entertainment, ThomasF@hyperion-entertainment.com * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * You may also use this under a BSD license. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * */#ifndef _MEMIO_H#define _MEMIO_H#include "short_types.h"#define IOBASE 0xFE000000#define in_byte(from) read_byte( (uint8 *)(IOBASE | (from)))#define in_word(from) read_word_little((uint16 *)(IOBASE | (from)))#define in_long(from) read_long_little((uint32 *)(IOBASE | (from)))#define out_byte(to, val) write_byte((uint8 *)(IOBASE | (to)), val)#define out_word(to, val) write_word_little((uint16 *)(IOBASE | (to)), val)#define out_long(to, val) write_long_little((uint32 *)(IOBASE | (to)), val)static inline uint8 read_byte(volatile uint8 *from){    int x;    asm volatile ("lbz %0,%1\n eieio\n sync" : "=r" (x) : "m" (*from));    return (uint8)x;}static inline void write_byte(volatile uint8 *to, uint8 x){    asm volatile ("stb %1,%0\n eieio\n sync" : "=m" (*to) : "r" (x));}static inline uint16 read_word_little(volatile uint16 *from){    int x;    asm volatile ("lhbrx %0,0,%1\n eieio\n sync" : "=r" (x) : "r" (from), "m" (*from));    return (uint16)x;}static inline uint16 read_word_big(volatile uint16 *from){    int x;    asm volatile ("lhz %0,%1\n eieio\n sync" : "=r" (x) : "m" (*from));    return (uint16)x;}static inline void write_word_little(volatile uint16 *to, int x){    asm volatile ("sthbrx %1,0,%2\n eieio\n sync" : "=m" (*to) : "r" (x), "r" (to));}static inline void write_word_big(volatile uint16 *to, int x){    asm volatile ("sth %1,%0\n eieio\n sync" : "=m" (*to) : "r" (x));}static inline uint32 read_long_little(volatile uint32 *from){    unsigned long x;    asm volatile ("lwbrx %0,0,%1\n eieio\n sync" : "=r" (x) : "r" (from), "m"(*from));    return (uint32)x;}static inline uint32 read_long_big(volatile uint32 *from){    unsigned long x;    asm volatile ("lwz %0,%1\n eieio\n sync" : "=r" (x) : "m" (*from));    return (uint32)x;}static inline void write_long_little(volatile uint32 *to, uint32 x){    asm volatile ("stwbrx %1,0,%2\n eieio\n sync" : "=m" (*to) : "r" (x), "r" (to));}static inline void write_long_big(volatile uint32 *to, uint32 x){    asm volatile ("stw %1,%0\n eieio\n sync" : "=m" (*to) : "r" (x));}#define CONFIG_ADDR(bus, devfn, offset) \    write_long_big((uint32 *)0xFEC00CF8,           \		   ((offset & 0xFC)<<24) | (devfn << 16)  \		   | (bus<<8) | 0x80);#define CONFIG_DATA(offset,mask) ((void *)(0xFEE00CFC+(offset & mask)))uint8 pci_read_cfg_byte(int32 bus, int32 devfn, int32 offset);void pci_write_cfg_byte(int32 bus, int32 devfn, int32 offset, uint8 x);uint16 pci_read_cfg_word(int32 bus, int32 devfn, int32 offset);void pci_write_cfg_word(int32 bus, int32 devfn, int32 offset, uint16 x);uint32 pci_read_cfg_long(int32 bus, int32 devfn, int32 offset);void pci_write_cfg_long(int32 bus, int32 devfn, int32 offset, uint32 x);#endif