linux-kernel - [v5 2/9] iommu, x86: Define new irte structure for VT-d Posted-Interrupts

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Message-Id: <1432098937-19527-3-git-send-email-feng.wu@intel.com>
Date:	Wed, 20 May 2015 13:15:30 +0800
From:	Feng Wu <feng.wu@...el.com>
To:	joro@...tes.org, dwmw2@...radead.org
Cc:	tglx@...utronix.de, jiang.liu@...ux.intel.com,
	iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	Feng Wu <feng.wu@...el.com>
Subject: [v5 2/9] iommu, x86: Define new irte structure for VT-d Posted-Interrupts

Add a new irte_pi structure for VT-d Posted-Interrupts.

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/dmar.h | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index 8473756..c7f9cda 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -212,6 +212,38 @@ struct irte {
 	};
 };
 
+struct irte_pi {
+	union {
+		struct {
+			__u64   present		: 1,
+				fpd		: 1,
+				__reserved_1	: 6,
+				avail		: 4,
+				__reserved_2	: 2,
+				urg		: 1,
+				pst		: 1,
+				vector		: 8,
+				__reserved_3	: 14,
+				pda_l		: 26;
+		};
+		__u64 low;
+	};
+
+	union {
+		struct {
+			__u64	sid		: 16,
+				sq		: 2,
+				svt		: 2,
+				__reserved_4	: 12,
+				pda_h		: 32;
+		};
+		__u64 high;
+	};
+};
+
+#define PDA_LOW_BIT    26
+#define PDA_HIGH_BIT   32
+
 enum {
 	IRQ_REMAP_XAPIC_MODE,
 	IRQ_REMAP_X2APIC_MODE,
-- 
2.1.0

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