From 09c188c4f6b331dbb61a2b5bd05d4c89c733fe33 Mon Sep 17 00:00:00 2001 From: Geoff Thorpe Date: Thu, 27 Oct 2011 02:58:45 +0000 Subject: [PATCH] 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 Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/pgtable.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h index 88b0bd925a8b..2e0e4110f7ae 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;