1 /* 2 * linux/arch/m32r/mm/ioremap-nommu.c 3 * 4 * Copyright (c) 2001, 2002 Hiroyuki Kondo 5 * 6 * Taken from mips version. 7 * (C) Copyright 1995 1996 Linus Torvalds 8 * (C) Copyright 2001 Ralf Baechle 9 */ 10 11 /* 12 * This file is subject to the terms and conditions of the GNU General Public 13 * License. See the file "COPYING" in the main directory of this archive 14 * for more details. 15 * 16 */ 17 18 #include <linux/module.h> 19 #include <asm/addrspace.h> 20 #include <asm/byteorder.h> 21 22 #include <linux/vmalloc.h> 23 #include <asm/io.h> 24 #include <asm/pgalloc.h> 25 #include <asm/cacheflush.h> 26 #include <asm/tlbflush.h> 27 28 29 /* 30 * Remap an arbitrary physical address space into the kernel virtual 31 * address space. Needed when the kernel wants to access high addresses 32 * directly. 33 * 34 * NOTE! We need to allow non-page-aligned mappings too: we will obviously 35 * have to convert them into an offset in a page-aligned mapping, but the 36 * caller shouldn't need to know that small detail. 37 */ 38 39 #define IS_LOW512(addr) (!((unsigned long)(addr) & ~0x1fffffffUL)) 40 41 void __iomem * __ioremap(unsigned long phys_addr,unsigned long size,unsigned long flags)42__ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags) 43 { 44 return (void *)phys_addr; 45 } 46 47 #define IS_KSEG1(addr) (((unsigned long)(addr) & ~0x1fffffffUL) == KSEG1) 48 iounmap(volatile void __iomem * addr)49void iounmap(volatile void __iomem *addr) 50 { 51 } 52 53