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Date: Fri, 5 Jun 2015 13:42:51 +0800 From: Feng Wu <feng.wu@...el.com> To: joro@...tes.org, dwmw2@...radead.org, tglx@...utronix.de Cc: jiang.liu@...ux.intel.com, iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org, Feng Wu <feng.wu@...el.com> Subject: [v9 6/9] iommu, x86: Add cap_pi_support() to detect VT-d PI capability Add helper function to detect VT-d Posted-Interrupts capability. Signed-off-by: Feng Wu <feng.wu@...el.com> Reviewed-by: Jiang Liu <jiang.liu@...ux.intel.com> Acked-by: David Woodhouse <David.Woodhouse@...el.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 0af9b03..0c251be 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) -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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