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[MIPS] Fix build error on processors that don's support copy-on-write.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2006-02-28 17:04:20 +00:00
parent 4debe4f963
commit 778e2ac597
2 changed files with 19 additions and 1 deletions
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2
arch/mips/lib/iomap.c
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@ -63,7 +63,7 @@ void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
return ioport_map(start, len);
if (flags & IORESOURCE_MEM) {
if (flags & IORESOURCE_CACHEABLE)
return ioremap_cacheable_cow(start, len);
return ioremap_cachable(start, len);
return ioremap_nocache(start, len);
}

18
include/asm-mips/io.h
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@ -282,6 +282,24 @@ static inline void __iomem * __ioremap_mode(phys_t offset, unsigned long size,
#define ioremap_nocache(offset, size) \
__ioremap_mode((offset), (size), _CACHE_UNCACHED)
/*
* ioremap_cachable - map bus memory into CPU space
* @offset: bus address of the memory
* @size: size of the resource to map
*
* ioremap_nocache performs a platform specific sequence of operations to
* make bus memory CPU accessible via the readb/readw/readl/writeb/
* writew/writel functions and the other mmio helpers. The returned
* address is not guaranteed to be usable directly as a virtual
* address.
*
* This version of ioremap ensures that the memory is marked cachable by
* the CPU. Also enables full write-combining. Useful for some
* memory-like regions on I/O busses.
*/
#define ioremap_cachable(offset, size) \
__ioremap_mode((offset), (size), PAGE_CACHABLE_DEFAULT)
/*
* These two are MIPS specific ioremap variant. ioremap_cacheable_cow
* requests a cachable mapping, ioremap_uncached_accelerated requests a