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 18 /* 19 * Generic virtual read/write 20 */ 21 #define __arch_getw(a) (*(volatile unsigned short *)(a)) 22 #define __arch_putw(v,a) (*(volatile unsigned short *)(a) = (v)) 23 24 u8 __inb8(unsigned int port); 25 void __outb8(u8 val, unsigned int port); 26 27 u8 __inb16(unsigned int port); 28 void __outb16(u8 val, unsigned int port); 29 30 u16 __inw(unsigned int port); 31 void __outw(u16 val, unsigned int port); 32 33 u32 __inl(unsigned int port); 34 void __outl(u32 val, unsigned int port); 35 36 u8 __readb(void *addr); 37 u16 __readw(void *addr); 38 u32 __readl(void *addr); 39 40 void __writeb(u8 val, void *addr); 41 void __writew(u16 val, void *addr); 42 void __writel(u32 val, void *addr); 43 44 /* 45 * Argh, someone forgot the IOCS16 line. We therefore have to handle 46 * the byte stearing by selecting the correct byte IO functions here. 47 */ 48 #ifdef ISA_SIXTEEN_BIT_PERIPHERAL 49 #define inb(p) __inb16(p) 50 #define outb(v,p) __outb16(v,p) 51 #else 52 #define inb(p) __inb8(p) 53 #define outb(v,p) __outb8(v,p) 54 #endif 55 56 #define inw(p) __inw(p) 57 #define outw(v,p) __outw(v,p) 58 59 #define inl(p) __inl(p) 60 #define outl(v,p) __outl(v,p) 61 62 #define readb(b) __readb(b) 63 #define readw(b) __readw(b) 64 #define readl(b) __readl(b) 65 66 #define writeb(v,b) __writeb(v,b) 67 #define writew(v,b) __writew(v,b) 68 #define writel(v,b) __writel(v,b) 69 70 #define __arch_ioremap(off,sz,c) ((void *)(off)) 71 #define __arch_iounmap(virt) do { } while (0) 72 73 extern void insb(unsigned int port, void *buf, int sz); 74 extern void insw(unsigned int port, void *buf, int sz); 75 extern void insl(unsigned int port, void *buf, int sz); 76 77 extern void outsb(unsigned int port, const void *buf, int sz); 78 extern void outsw(unsigned int port, const void *buf, int sz); 79 extern void outsl(unsigned int port, const void *buf, int sz); 80 81 #endif 82