diff options
| author | Sheng Yang <sheng@linux.intel.com> | 2009-03-18 03:33:05 -0400 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2009-03-24 05:42:43 -0400 |
| commit | 58c610bd1a3f50820e45a7c09ec0e44d2cda15dd (patch) | |
| tree | 696539e1e17fd7600222865fa331e9144737a58b /include | |
| parent | a1e4ee22863d41a6fbb24310d7951836cb6dafe7 (diff) | |
intel-iommu: Snooping control support
Snooping control enabled IOMMU to guarantee DMA cache coherency and thus reduce
software effort (VMM) in maintaining effective memory type.
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/intel-iommu.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index d2e3cbfba14f..3ad894004938 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h | |||
| @@ -123,7 +123,7 @@ static inline void dmar_writeq(void __iomem *addr, u64 val) | |||
| 123 | #define ecap_eim_support(e) ((e >> 4) & 0x1) | 123 | #define ecap_eim_support(e) ((e >> 4) & 0x1) |
| 124 | #define ecap_ir_support(e) ((e >> 3) & 0x1) | 124 | #define ecap_ir_support(e) ((e >> 3) & 0x1) |
| 125 | #define ecap_max_handle_mask(e) ((e >> 20) & 0xf) | 125 | #define ecap_max_handle_mask(e) ((e >> 20) & 0xf) |
| 126 | 126 | #define ecap_sc_support(e) ((e >> 7) & 0x1) /* Snooping Control */ | |
| 127 | 127 | ||
| 128 | /* IOTLB_REG */ | 128 | /* IOTLB_REG */ |
| 129 | #define DMA_TLB_FLUSH_GRANU_OFFSET 60 | 129 | #define DMA_TLB_FLUSH_GRANU_OFFSET 60 |