io.h
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- /*
- * linux/include/asm-arm/arch-ebsa110/io.h
- *
- * Copyright (C) 1997,1998 Russell King
- *
- * 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.
- *
- * Modifications:
- * 06-Dec-1997 RMK Created.
- */
- #ifndef __ASM_ARM_ARCH_IO_H
- #define __ASM_ARM_ARCH_IO_H
- #define IO_SPACE_LIMIT 0xffff
- /*
- * Generic virtual read/write
- */
- #define __arch_getw(a) (*(volatile unsigned short *)(a))
- #define __arch_putw(v,a) (*(volatile unsigned short *)(a) = (v))
- u8 __inb8(unsigned int port);
- void __outb8(u8 val, unsigned int port);
- u8 __inb16(unsigned int port);
- void __outb16(u8 val, unsigned int port);
- u16 __inw(unsigned int port);
- void __outw(u16 val, unsigned int port);
- u32 __inl(unsigned int port);
- void __outl(u32 val, unsigned int port);
- u8 __readb(void *addr);
- u16 __readw(void *addr);
- u32 __readl(void *addr);
- void __writeb(u8 val, void *addr);
- void __writew(u16 val, void *addr);
- void __writel(u32 val, void *addr);
- /*
- * Argh, someone forgot the IOCS16 line. We therefore have to handle
- * the byte stearing by selecting the correct byte IO functions here.
- */
- #ifdef ISA_SIXTEEN_BIT_PERIPHERAL
- #define inb(p) __inb16(p)
- #define outb(v,p) __outb16(v,p)
- #else
- #define inb(p) __inb8(p)
- #define outb(v,p) __outb8(v,p)
- #endif
- #define inw(p) __inw(p)
- #define outw(v,p) __outw(v,p)
- #define inl(p) __inl(p)
- #define outl(v,p) __outl(v,p)
- #define readb(b) __readb(b)
- #define readw(b) __readw(b)
- #define readl(b) __readl(b)
- #define writeb(v,b) __writeb(v,b)
- #define writew(v,b) __writew(v,b)
- #define writel(v,b) __writel(v,b)
- #define __arch_ioremap(off,sz,c) ((void *)(off))
- #define __arch_iounmap(virt) do { } while (0)
- extern void insb(unsigned int port, void *buf, int sz);
- extern void insw(unsigned int port, void *buf, int sz);
- extern void insl(unsigned int port, void *buf, int sz);
- extern void outsb(unsigned int port, const void *buf, int sz);
- extern void outsw(unsigned int port, const void *buf, int sz);
- extern void outsl(unsigned int port, const void *buf, int sz);
- #endif