linux-kernel - [PATCH 6/9] VT-d: add device attach and detach functions for IOMMU API

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Date:	Thu, 27 Nov 2008 16:40:51 +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 6/9] VT-d: add device attach and detach functions for IOMMU API

Signed-off-by: Joerg Roedel <joerg.roedel@....com>
---
 drivers/pci/intel-iommu.c |   32 ++++++++++++++++++++++++++++++++
 1 files changed, 32 insertions(+), 0 deletions(-)

diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index b958b6f..a90c832 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -2460,3 +2460,35 @@ static void intel_iommu_domain_destroy(struct iommu_domain *domain)
 	intel_iommu_domain_exit(dmar_domain);
 	domain->priv = NULL;
 }
+
+static int intel_iommu_attach_device(struct iommu_domain *domain,
+				     struct device *dev)
+{
+	struct dmar_domain *dmar_domain;
+	struct pci_dev *pdev;
+
+	dmar_domain = domain->priv;
+	pdev = to_pci_dev(dev);
+
+	if (!pdev)
+		return -EINVAL;
+
+	intel_iommu_context_mapping(dmar_domain, pdev);
+
+	return 0;
+}
+
+static void intel_iommu_detach_device(struct iommu_domain *domain,
+				      struct device *dev)
+{
+	struct dmar_domain *dmar_domain;
+	struct pci_dev *pdev;
+
+	dmar_domain = domain->priv;
+	pdev = to_pci_dev(dev);
+
+	if (!pdev)
+		return;
+
+	intel_iommu_detach_dev(dmar_domain, pdev->bus->number, pdev->devfn);
+}
-- 
1.5.6.4


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