1 /* 2 * linux/include/asm-arm/arch-mx1ads/io.h 3 * 4 * Copyright (C) 1999 ARM Limited 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 as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 */ 20 #ifndef __ASM_ARM_ARCH_IO_H 21 #define __ASM_ARM_ARCH_IO_H 22 23 #define IO_SPACE_LIMIT 0xffff 24 25 26 #define __io(a) ((a)) 27 28 /* 29 * Generic virtual read/write 30 */ 31 #define __arch_getw(a) (*(volatile unsigned short *)(a)) 32 #define __arch_putw(v,a) (*(volatile unsigned short *)(a) = (v)) 33 34 /* 35 * Validate the pci memory address for ioremap. 36 */ 37 #define iomem_valid_addr(iomem,size) (1) 38 39 /* 40 * Convert PCI memory space to a CPU physical address 41 */ 42 #define iomem_to_phys(iomem) (iomem) 43 44 #endif 45