1/* 2 * DaVinci I/O mapping code 3 * 4 * Copyright (C) 2005-2006 Texas Instruments 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 11#include <linux/module.h> 12#include <linux/kernel.h> 13#include <linux/init.h> 14 15#include <asm/tlb.h> 16#include <asm/io.h> 17#include <asm/memory.h> 18 19#include <asm/mach/map.h> 20 21extern void davinci_check_revision(void); 22 23/* 24 * The machine specific code may provide the extra mapping besides the 25 * default mapping provided here. 26 */ 27static struct map_desc davinci_io_desc[] __initdata = { 28 { 29 .virtual = IO_VIRT, 30 .pfn = __phys_to_pfn(IO_PHYS), 31 .length = IO_SIZE, 32 .type = MT_DEVICE 33 }, 34}; 35 36void __init davinci_map_common_io(void) 37{ 38 iotable_init(davinci_io_desc, ARRAY_SIZE(davinci_io_desc)); 39 40 /* Normally devicemaps_init() would flush caches and tlb after 41 * mdesc->map_io(), but we must also do it here because of the CPU 42 * revision check below. 43 */ 44 local_flush_tlb_all(); 45 flush_cache_all(); 46 47 /* We want to check CPU revision early for cpu_is_xxxx() macros. 48 * IO space mapping must be initialized before we can do that. 49 */ 50 davinci_check_revision(); 51} 52