Message ID | 1418397300-10870-8-git-send-email-feng.wu@intel.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
On Fri, 2014-12-12 at 23:14 +0800, Feng Wu wrote: > Add helper function to detect VT-d Posted-Interrupts capability. > > Signed-off-by: Feng Wu <feng.wu@intel.com> > Reviewed-by: Jiang Liu <jiang.liu@linux.intel.com> Acked-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index ecaf3a9..8174ae8 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -87,6 +87,7 @@ static inline void dmar_writeq(void __iomem *addr, u64 val) /* * Decoding Capability Register */ +#define cap_pi_support(c) (((c) >> 59) & 1) #define cap_read_drain(c) (((c) >> 55) & 1) #define cap_write_drain(c) (((c) >> 54) & 1) #define cap_max_amask_val(c) (((c) >> 48) & 0x3f)