Messages in this thread Patch in this message | | | From | Joerg Roedel <> | Subject | [PATCH 17/21] AMD IOMMU: add device attach function for IOMMU API | Date | Tue, 9 Dec 2008 15:16:14 +0100 |
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Impact: add a generic function to attach devices to protection domains
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> --- arch/x86/kernel/amd_iommu.c | 35 +++++++++++++++++++++++++++++++++++ 1 files changed, 35 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 60e268a..97eb60d 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -1600,3 +1600,38 @@ static void amd_iommu_detach_device(struct iommu_domain *dom, iommu_completion_wait(iommu); } +static int amd_iommu_attach_device(struct iommu_domain *dom, + struct device *dev) +{ + struct protection_domain *domain = dom->priv; + struct protection_domain *old_domain; + struct amd_iommu *iommu; + struct pci_dev *pdev; + u16 devid; + + if (dev->bus != &pci_bus_type) + return -EINVAL; + + pdev = to_pci_dev(dev); + + devid = calc_devid(pdev->bus->number, pdev->devfn); + + if (devid >= amd_iommu_last_bdf || + devid != amd_iommu_alias_table[devid]) + return -EINVAL; + + iommu = amd_iommu_rlookup_table[devid]; + if (!iommu) + return -EINVAL; + + old_domain = domain_for_device(devid); + if (old_domain) + __detach_device(old_domain, devid); + + set_device_domain(iommu, domain, devid); + + iommu_completion_wait(iommu); + + return 0; +} + -- 1.5.6.4
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