/* kmap.c: ioremapping handlers * * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * - Derived from arch/m68k/mm/kmap.c * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #include #include #include #include #include #include #include #include #include #include #include #include #undef DEBUG /*****************************************************************************/ /* * Map some physical address range into the kernel address space. */ void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag) { return (void *)physaddr; } /* * Unmap a ioremap()ed region again */ void iounmap(void *addr) { } /* * __iounmap unmaps nearly everything, so be careful * it doesn't free currently pointer/page tables anymore but it * wans't used anyway and might be added later. */ void __iounmap(void *addr, unsigned long size) { } /* * Set new cache mode for some kernel address space. * The caller must push data for that range itself, if such data may already * be in the cache. */ void kernel_set_cachemode(void *addr, unsigned long size, int cmode) { }