2 * DaVinci I/O mapping code
4 * Copyright (C) 2005-2006 Texas Instruments
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.
11 #include <linux/module.h>
15 #include <asm/mach/map.h>
17 #include <mach/common.h>
20 * Intercept ioremap() requests for addresses in our fixed mapping regions.
22 void __iomem
*davinci_ioremap(unsigned long p
, size_t size
, unsigned int type
)
24 struct map_desc
*desc
= davinci_soc_info
.io_desc
;
25 int desc_num
= davinci_soc_info
.io_desc_num
;
28 for (i
= 0; i
< desc_num
; i
++, desc
++) {
29 unsigned long iophys
= __pfn_to_phys(desc
->pfn
);
30 unsigned long iosize
= desc
->length
;
32 if (p
>= iophys
&& (p
+ size
) <= (iophys
+ iosize
))
33 return __io(desc
->virtual + p
- iophys
);
36 return __arm_ioremap_caller(p
, size
, type
,
37 __builtin_return_address(0));
39 EXPORT_SYMBOL(davinci_ioremap
);
41 void davinci_iounmap(volatile void __iomem
*addr
)
43 unsigned long virt
= (unsigned long)addr
;
45 if (virt
>= VMALLOC_START
&& virt
< VMALLOC_END
)
48 EXPORT_SYMBOL(davinci_iounmap
);
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