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powerpc: Add pgprot_cached_noncoherent() 

This adds a pgprot combination required by some cache-enabled IO device
mappings, such as Freescale datapath (QMan and BMan) portals.

Signed-off-by: Geoff Thorpe <geoff@geoffthorpe.net>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
hifive-unleashed-5.1
Geoff Thorpe 2011-10-27 02:58:45 +00:00 committed by Benjamin Herrenschmidt
parent e8d2c47352
commit 09c188c4f6
1 changed files with 3 additions and 0 deletions
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arch/powerpc/include/asm/pgtable.h
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@ -170,6 +170,9 @@ extern int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long addre
#define pgprot_cached_wthru(prot) (__pgprot((pgprot_val(prot) & ~_PAGE_CACHE_CTL) | \
_PAGE_COHERENT | _PAGE_WRITETHRU))
#define pgprot_cached_noncoherent(prot) \
(__pgprot(pgprot_val(prot) & ~_PAGE_CACHE_CTL))
#define pgprot_writecombine pgprot_noncached_wc
struct file;