* [PATCH] powerpc: add pgprot_cached_noncoherent()
@ 2011-10-27 12:58 Geoff Thorpe
0 siblings, 0 replies; only message in thread
From: Geoff Thorpe @ 2011-10-27 12:58 UTC (permalink / raw)
To: linuxppc-dev; +Cc: Geoff Thorpe
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>
---
arch/powerpc/include/asm/pgtable.h | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h
index 88b0bd9..2e0e411 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h
@@ -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;
--
1.7.3.4
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2011-10-27 13:05 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-10-27 12:58 [PATCH] powerpc: add pgprot_cached_noncoherent() Geoff Thorpe
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).