1/* 2 * linux/include/asm-arm/arch-ebsa110/io.h 3 * 4 * Copyright (C) 1997,1998 Russell King 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 * 10 * Modifications: 11 * 06-Dec-1997 RMK Created. 12 */ 13#ifndef __ASM_ARM_ARCH_IO_H 14#define __ASM_ARM_ARCH_IO_H 15 16#define IO_SPACE_LIMIT 0xffff 17 18u8 __inb8(unsigned int port); 19void __outb8(u8 val, unsigned int port); 20 21u8 __inb16(unsigned int port); 22void __outb16(u8 val, unsigned int port); 23 24u16 __inw(unsigned int port); 25void __outw(u16 val, unsigned int port); 26 27u32 __inl(unsigned int port); 28void __outl(u32 val, unsigned int port); 29 30u8 __readb(const volatile void __iomem *addr); 31u16 __readw(const volatile void __iomem *addr); 32u32 __readl(const volatile void __iomem *addr); 33 34void __writeb(u8 val, void __iomem *addr); 35void __writew(u16 val, void __iomem *addr); 36void __writel(u32 val, void __iomem *addr); 37 38/* 39 * Argh, someone forgot the IOCS16 line. We therefore have to handle 40 * the byte stearing by selecting the correct byte IO functions here. 41 */ 42#ifdef ISA_SIXTEEN_BIT_PERIPHERAL 43#define inb(p) __inb16(p) 44#define outb(v,p) __outb16(v,p) 45#else 46#define inb(p) __inb8(p) 47#define outb(v,p) __outb8(v,p) 48#endif 49 50#define inw(p) __inw(p) 51#define outw(v,p) __outw(v,p) 52 53#define inl(p) __inl(p) 54#define outl(v,p) __outl(v,p) 55 56#define readb(b) __readb(b) 57#define readw(b) __readw(b) 58#define readl(b) __readl(b) 59#define readb_relaxed(addr) readb(addr) 60#define readw_relaxed(addr) readw(addr) 61#define readl_relaxed(addr) readl(addr) 62 63#define writeb(v,b) __writeb(v,b) 64#define writew(v,b) __writew(v,b) 65#define writel(v,b) __writel(v,b) 66 67static inline void __iomem *__arch_ioremap(unsigned long cookie, size_t size, 68 unsigned int flags) 69{ 70 return (void __iomem *)cookie; 71} 72 73#define __arch_ioremap __arch_ioremap 74#define __arch_iounmap(cookie) do { } while (0) 75 76extern void insb(unsigned int port, void *buf, int sz); 77extern void insw(unsigned int port, void *buf, int sz); 78extern void insl(unsigned int port, void *buf, int sz); 79 80extern void outsb(unsigned int port, const void *buf, int sz); 81extern void outsw(unsigned int port, const void *buf, int sz); 82extern void outsl(unsigned int port, const void *buf, int sz); 83 84/* can't support writesb atm */ 85extern void writesw(void __iomem *addr, const void *data, int wordlen); 86extern void writesl(void __iomem *addr, const void *data, int longlen); 87 88/* can't support readsb atm */ 89extern void readsw(const void __iomem *addr, void *data, int wordlen); 90extern void readsl(const void __iomem *addr, void *data, int longlen); 91 92#endif 93