Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964789AbbBBIOS (ORCPT ); Mon, 2 Feb 2015 03:14:18 -0500 Received: from mga09.intel.com ([134.134.136.24]:3197 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933040AbbBBIOK (ORCPT ); Mon, 2 Feb 2015 03:14:10 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.09,505,1418112000"; d="scan'208";a="660196987" From: Feng Wu To: dwmw2@infradead.org, joro@8bytes.or Cc: jiang.liu@linux.intel.com, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Feng Wu Subject: [v4 5/8] iommu, x86: Add cap_pi_support() to detect VT-d PI capability Date: Mon, 2 Feb 2015 16:01:51 +0800 Message-Id: <1422864114-19324-6-git-send-email-feng.wu@intel.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1422864114-19324-1-git-send-email-feng.wu@intel.com> References: <1422864114-19324-1-git-send-email-feng.wu@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1039 Lines: 29 Add helper function to detect VT-d Posted-Interrupts capability. Signed-off-by: Feng Wu Reviewed-by: Jiang Liu Acked-by: David Woodhouse --- include/linux/intel-iommu.h | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) 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) -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/