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| author | Zhenyu Wang <zhenyuw@linux.intel.com> | 2010-08-27 03:08:57 (GMT) |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2010-09-07 10:16:43 (GMT) |
| commit | f8f235e5bbf4e61f3e0886a44afb1dc4cfe8f337 (patch) | |
| tree | 9211554f0542ce636aa1f14ffe58cfa832efa04d /include | |
| parent | 93f5f7f1249e76a5e8afbdab53f90b10c41fdb61 (diff) | |
| download | linux-f8f235e5bbf4e61f3e0886a44afb1dc4cfe8f337.tar.xz | |
agp/intel: Fix cache control for Sandybridge
Sandybridge GTT has new cache control bits in PTE, which controls
graphics page cache in LLC or LLC/MLC, so we need to extend the mask
function to respect the new bits.
And set cache control to always LLC only by default on Gen6.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: stable@kernel.org
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/intel-gtt.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/intel-gtt.h b/include/linux/intel-gtt.h new file mode 100644 index 0000000..1d19ab2 --- /dev/null +++ b/include/linux/intel-gtt.h @@ -0,0 +1,20 @@ +/* + * Common Intel AGPGART and GTT definitions. + */ +#ifndef _INTEL_GTT_H +#define _INTEL_GTT_H + +#include <linux/agp_backend.h> + +/* This is for Intel only GTT controls. + * + * Sandybridge: AGP_USER_CACHED_MEMORY default to LLC only + */ + +#define AGP_USER_CACHED_MEMORY_LLC_MLC (AGP_USER_TYPES + 2) +#define AGP_USER_UNCACHED_MEMORY (AGP_USER_TYPES + 4) + +/* flag for GFDT type */ +#define AGP_USER_CACHED_MEMORY_GFDT (1 << 3) + +#endif |