1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * arch/arm/mach-rpc/include/mach/io.h 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 1997 Russell King 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * Modifications: 8*4882a593Smuzhiyun * 06-Dec-1997 RMK Created. 9*4882a593Smuzhiyun */ 10*4882a593Smuzhiyun #ifndef __ASM_ARM_ARCH_IO_H 11*4882a593Smuzhiyun #define __ASM_ARM_ARCH_IO_H 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #include <mach/hardware.h> 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun #define IO_SPACE_LIMIT 0xffff 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun /* 18*4882a593Smuzhiyun * We need PC style IO addressing for: 19*4882a593Smuzhiyun * - floppy (at 0x3f2,0x3f4,0x3f5,0x3f7) 20*4882a593Smuzhiyun * - parport (at 0x278-0x27a, 0x27b-0x27f, 0x778-0x77a) 21*4882a593Smuzhiyun * - 8250 serial (only for compile) 22*4882a593Smuzhiyun * 23*4882a593Smuzhiyun * These peripherals are found in an area of MMIO which looks very much 24*4882a593Smuzhiyun * like an ISA bus, but with registers at the low byte of each word. 25*4882a593Smuzhiyun */ 26*4882a593Smuzhiyun #define __io(a) (PCIO_BASE + ((a) << 2)) 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun #endif 29