projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c6337e2 KH |
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 | ||
| 21 | extern 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 | */ | |
| 27 | static 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 | ||
| 36 | void __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 | } |