linux-kernel - [PATCH 5/9] VT-d: add domain init and destroy functions for IOMMU API

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Date:	Thu, 27 Nov 2008 16:40:50 +0100
From:	Joerg Roedel <joerg.roedel@....com>
To:	kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
	iommu@...ts.linux-foundation.org
CC:	avi@...hat.com, weidong.han@...el.com, mingo@...hat.com,
	dwmw2@...radead.org, amit.shah@...hat.com,
	Joerg Roedel <joerg.roedel@....com>
Subject: [PATCH 5/9] VT-d: add domain init and destroy functions for IOMMU API

Signed-off-by: Joerg Roedel <joerg.roedel@....com>
---
 drivers/pci/intel-iommu.c |   24 ++++++++++++++++++++++++
 1 files changed, 24 insertions(+), 0 deletions(-)

diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 5c8baa4..b958b6f 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -35,6 +35,7 @@
 #include <linux/mempool.h>
 #include <linux/timer.h>
 #include <linux/iova.h>
+#include <linux/iommu.h>
 #include <linux/intel-iommu.h>
 #include <asm/cacheflush.h>
 #include <asm/iommu.h>
@@ -2436,3 +2437,26 @@ u64 intel_iommu_iova_to_pfn(struct dmar_domain *domain, u64 iova)
 	return pfn >> VTD_PAGE_SHIFT;
 }
 EXPORT_SYMBOL_GPL(intel_iommu_iova_to_pfn);
+
+static int intel_iommu_domain_init(struct iommu_domain *domain,
+				   struct device *dev)
+{
+	struct dmar_domain *dmar_domain;
+	struct pci_dev *pdev = to_pci_dev(dev);
+
+	if (!pdev)
+		return -EINVAL;
+
+	dmar_domain = intel_iommu_domain_alloc(pdev);
+	domain->priv = dmar_domain;
+
+	return 0;
+}
+
+static void intel_iommu_domain_destroy(struct iommu_domain *domain)
+{
+	struct dmar_domain *dmar_domain = domain->priv;
+
+	intel_iommu_domain_exit(dmar_domain);
+	domain->priv = NULL;
+}
-- 
1.5.6.4


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