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/*
* DaVinci I/O mapping code
*
* Copyright (C) 2005-2006 Texas Instruments
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/io.h>
#include <asm/tlb.h>
#include <asm/mach/map.h>
#include <mach/common.h>
/*
* Intercept ioremap() requests for addresses in our fixed mapping regions.
*/
void __iomem *davinci_ioremap(unsigned long p, size_t size, unsigned int type)
{
struct map_desc *desc = davinci_soc_info.io_desc;
int desc_num = davinci_soc_info.io_desc_num;
int i;
for (i = 0; i < desc_num; i++, desc++) {
unsigned long iophys = __pfn_to_phys(desc->pfn);
unsigned long iosize = desc->length;
if (p >= iophys && (p + size) <= (iophys + iosize))
return __io(desc->virtual + p - iophys);
}
return __arm_ioremap_caller(p, size, type,
__builtin_return_address(0));
}
EXPORT_SYMBOL(davinci_ioremap);
void davinci_iounmap(volatile void __iomem *addr)
{
unsigned long virt = (unsigned long)addr;
if (virt >= VMALLOC_START && virt < VMALLOC_END)
__iounmap(addr);
}
EXPORT_SYMBOL(davinci_iounmap);
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