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[PARISC] Make ioremap default to _nocache 

Since it is way more work to change most drivers to comply with parisc, take
the easy way out and make ioremap _NO_CACHE by default. This is in line with
what powerpc does.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
hifive-unleashed-5.1
Kyle McMartin 2006-04-20 21:16:32 +00:00 committed by Kyle McMartin
parent 6ca773cf8b
commit 1b52d7c221
1 changed files with 5 additions and 12 deletions
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17
include/asm-parisc/io.h
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@ -126,24 +126,17 @@ static inline void gsc_writeq(unsigned long long val, unsigned long addr)
extern void __iomem * __ioremap(unsigned long offset, unsigned long size, unsigned long flags);
/* Most machines react poorly to I/O-space being cacheable... Instead let's
* define ioremap() in terms of ioremap_nocache().
*/
extern inline void __iomem * ioremap(unsigned long offset, unsigned long size)
{
return __ioremap(offset, size, 0);
}
/*
* This one maps high address device memory and turns off caching for that area.
* it's useful if some control registers are in such an area and write combining
* or read caching is not desirable:
*/
extern inline void * ioremap_nocache(unsigned long offset, unsigned long size)
{
return __ioremap(offset, size, _PAGE_NO_CACHE /* _PAGE_PCD */);
return __ioremap(offset, size, _PAGE_NO_CACHE);
}
#define ioremap_nocache(off, sz) ioremap((off), (sz))
extern void iounmap(void __iomem *addr);
static inline unsigned char __raw_readb(const volatile void __iomem *addr)
{
return (*(volatile unsigned char __force *) (addr));