Add helper function to detect VT-d Posted-Interrupts capability. Signed-off-by: Feng Wu <feng...@intel.com> Reviewed-by: Jiang Liu <jiang....@linux.intel.com> --- include/linux/intel-iommu.h | 1 + 1 file changed, 1 insertion(+)
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) -- 1.9.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
