Messages in this thread Patch in this message |  | | | From | Joerg Roedel <> | | Subject | [PATCH 16/21] AMD IOMMU: add device detach function for IOMMU API | | Date | Tue, 9 Dec 2008 15:16:13 +0100 |
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Impact: add a generic function to detach devices from protection domains
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> --- arch/x86/kernel/amd_iommu.c | 27 +++++++++++++++++++++++++++ 1 files changed, 27 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index d5581bb..60e268a 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -1573,3 +1573,30 @@ static void amd_iommu_domain_destroy(struct iommu_domain *dom) dom->priv = NULL; } + +static void amd_iommu_detach_device(struct iommu_domain *dom, + struct device *dev) +{ + struct protection_domain *domain = dom->priv; + struct amd_iommu *iommu; + struct pci_dev *pdev; + u16 devid; + + if (dev->bus != &pci_bus_type) + return; + + pdev = to_pci_dev(dev); + + devid = calc_devid(pdev->bus->number, pdev->devfn); + + if (devid > 0) + detach_device(domain, devid); + + iommu = amd_iommu_rlookup_table[devid]; + if (!iommu) + return; + + iommu_queue_inv_dev_entry(iommu, devid); + iommu_completion_wait(iommu); +} + -- 1.5.6.4
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