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Merge branches 'iommu/page-sizes' and 'iommu/group-id' into next

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Conflicts:
	drivers/iommu/amd_iommu.c
	drivers/iommu/intel-iommu.c
	include/linux/iommu.h
This commit is contained in:
Joerg Roedel
2012-01-09 13:06:28 +01:00
parent 00fb5430f5 95bdaf71cc
commit f93ea73387
9 changed files with 155 additions and 1 deletions
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49
drivers/iommu/intel-iommu.c
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@@ -4080,6 +4080,54 @@ static int intel_iommu_domain_has_cap(struct iommu_domain *domain,
return 0;
}
/*
* Group numbers are arbitrary. Device with the same group number
* indicate the iommu cannot differentiate between them. To avoid
* tracking used groups we just use the seg|bus|devfn of the lowest
* level we're able to differentiate devices
*/
static int intel_iommu_device_group(struct device *dev, unsigned int *groupid)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct pci_dev *bridge;
union {
struct {
u8 devfn;
u8 bus;
u16 segment;
} pci;
u32 group;
} id;
if (iommu_no_mapping(dev))
return -ENODEV;
id.pci.segment = pci_domain_nr(pdev->bus);
id.pci.bus = pdev->bus->number;
id.pci.devfn = pdev->devfn;
if (!device_to_iommu(id.pci.segment, id.pci.bus, id.pci.devfn))
return -ENODEV;
bridge = pci_find_upstream_pcie_bridge(pdev);
if (bridge) {
if (pci_is_pcie(bridge)) {
id.pci.bus = bridge->subordinate->number;
id.pci.devfn = 0;
} else {
id.pci.bus = bridge->bus->number;
id.pci.devfn = bridge->devfn;
}
}
if (!pdev->is_virtfn && iommu_group_mf)
id.pci.devfn = PCI_DEVFN(PCI_SLOT(id.pci.devfn), 0);
*groupid = id.group;
return 0;
}
static struct iommu_ops intel_iommu_ops = {
.domain_init = intel_iommu_domain_init,
.domain_destroy = intel_iommu_domain_destroy,
@@ -4089,6 +4137,7 @@ static struct iommu_ops intel_iommu_ops = {
.unmap = intel_iommu_unmap,
.iova_to_phys = intel_iommu_iova_to_phys,
.domain_has_cap = intel_iommu_domain_has_cap,
.device_group = intel_iommu_device_group,
.pgsize_bitmap = INTEL_IOMMU_PGSIZES,
};