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Merge branches 'iommu/fixes', 'x86/amd', 'groups', 'arm/tegra' and 'api/domain-attr' into next

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Conflicts:
	drivers/iommu/iommu.c
	include/linux/iommu.h
This commit is contained in:
Joerg Roedel
2012-07-23 12:17:00 +02:00
parent 28a33cbc24 2c9195e990 2c0ae1720c 7d43c2e42c 8ce44a2174 3177bb76a8
commit 395e51f18d
32 changed files with 1847 additions and 514 deletions
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95
drivers/iommu/intel-iommu.c
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@@ -3932,6 +3932,10 @@ static int intel_iommu_domain_init(struct iommu_domain *domain)
domain_update_iommu_cap(dmar_domain);
domain->priv = dmar_domain;
domain->geometry.aperture_start = 0;
domain->geometry.aperture_end = __DOMAIN_MAX_ADDR(dmar_domain->gaw);
domain->geometry.force_aperture = true;
return 0;
}
@@ -4090,52 +4094,70 @@ 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)
static void swap_pci_ref(struct pci_dev **from, struct pci_dev *to)
{
pci_dev_put(*from);
*from = to;
}
#define REQ_ACS_FLAGS (PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF)
static int intel_iommu_add_device(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct pci_dev *bridge;
union {
struct {
u8 devfn;
u8 bus;
u16 segment;
} pci;
u32 group;
} id;
struct pci_dev *bridge, *dma_pdev;
struct iommu_group *group;
int ret;
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))
if (!device_to_iommu(pci_domain_nr(pdev->bus),
pdev->bus->number, pdev->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 (pci_is_pcie(bridge))
dma_pdev = pci_get_domain_bus_and_slot(
pci_domain_nr(pdev->bus),
bridge->subordinate->number, 0);
else
dma_pdev = pci_dev_get(bridge);
} else
dma_pdev = pci_dev_get(pdev);
swap_pci_ref(&dma_pdev, pci_get_dma_source(dma_pdev));
if (dma_pdev->multifunction &&
!pci_acs_enabled(dma_pdev, REQ_ACS_FLAGS))
swap_pci_ref(&dma_pdev,
pci_get_slot(dma_pdev->bus,
PCI_DEVFN(PCI_SLOT(dma_pdev->devfn),
0)));
while (!pci_is_root_bus(dma_pdev->bus)) {
if (pci_acs_path_enabled(dma_pdev->bus->self,
NULL, REQ_ACS_FLAGS))
break;
swap_pci_ref(&dma_pdev, pci_dev_get(dma_pdev->bus->self));
}
if (!pdev->is_virtfn && iommu_group_mf)
id.pci.devfn = PCI_DEVFN(PCI_SLOT(id.pci.devfn), 0);
group = iommu_group_get(&dma_pdev->dev);
pci_dev_put(dma_pdev);
if (!group) {
group = iommu_group_alloc();
if (IS_ERR(group))
return PTR_ERR(group);
}
*groupid = id.group;
ret = iommu_group_add_device(group, dev);
return 0;
iommu_group_put(group);
return ret;
}
static void intel_iommu_remove_device(struct device *dev)
{
iommu_group_remove_device(dev);
}
static struct iommu_ops intel_iommu_ops = {
@@ -4147,7 +4169,8 @@ 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,
.add_device = intel_iommu_add_device,
.remove_device = intel_iommu_remove_device,
.pgsize_bitmap = INTEL_IOMMU_PGSIZES,
};