diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2009-06-26 08:14:36 +0200 |
|---|---|---|
| committer | Jesper Nilsson <jesper.nilsson@axis.com> | 2009-08-31 18:38:11 +0200 |
| commit | d8fb91e8344ff11381fc47d43e0b234065be4bd0 (patch) | |
| tree | 36b72b3b6fff5f53d53cc14587dbc96f73d29ae5 /arch/cris/include/arch-v10 | |
| parent | adda766193ea1cf3137484a9521972d080d0b7af (diff) | |
CRIS: add pgprot_noncached
On CRIS, the high address bit controls caching, which means that
we can add a pgprot_noncached() macro that sets this bit in the
address.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com>
Diffstat (limited to 'arch/cris/include/arch-v10')
| -rw-r--r-- | arch/cris/include/arch-v10/arch/mmu.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/cris/include/arch-v10/arch/mmu.h b/arch/cris/include/arch-v10/arch/mmu.h index df84f1716e6..e829e5a37bb 100644 --- a/arch/cris/include/arch-v10/arch/mmu.h +++ b/arch/cris/include/arch-v10/arch/mmu.h @@ -33,10 +33,10 @@ typedef struct /* CRIS PTE bits (see R_TLB_LO in the register description) * - * Bit: 31-13 12-------4 3 2 1 0 - * ________________________________________________ - * | pfn | reserved | global | valid | kernel | we | - * |_____|__________|________|_______|________|_____| + * Bit: 31 30-13 12-------4 3 2 1 0 + * _______________________________________________________ + * | cache |pfn | reserved | global | valid | kernel | we | + * |_______|____|__________|________|_______|________|_____| * * (pfn = physical frame number) */ @@ -53,6 +53,7 @@ typedef struct #define _PAGE_VALID (1<<2) /* page is valid */ #define _PAGE_SILENT_READ (1<<2) /* synonym */ #define _PAGE_GLOBAL (1<<3) /* global page - context is ignored */ +#define _PAGE_NO_CACHE (1<<31) /* part of the uncached memory map */ /* Bits the HW doesn't care about but the kernel uses them in SW */ |