iommu/vt-d: Include ACPI devices in iommu=pt
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index a180f10..6fbce01 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -2595,31 +2595,66 @@
return 1;
}
+static int __init dev_prepare_static_identity_mapping(struct device *dev, int hw)
+{
+ int ret;
+
+ if (!iommu_should_identity_map(dev, 1))
+ return 0;
+
+ ret = domain_add_dev_info(si_domain, dev,
+ hw ? CONTEXT_TT_PASS_THROUGH :
+ CONTEXT_TT_MULTI_LEVEL);
+ if (!ret)
+ pr_info("IOMMU: %s identity mapping for device %s\n",
+ hw ? "hardware" : "software", dev_name(dev));
+ else if (ret == -ENODEV)
+ /* device not associated with an iommu */
+ ret = 0;
+
+ return ret;
+}
+
+
static int __init iommu_prepare_static_identity_mapping(int hw)
{
struct pci_dev *pdev = NULL;
- int ret;
+ struct dmar_drhd_unit *drhd;
+ struct intel_iommu *iommu;
+ struct device *dev;
+ int i;
+ int ret = 0;
ret = si_domain_init(hw);
if (ret)
return -EFAULT;
for_each_pci_dev(pdev) {
- if (iommu_should_identity_map(&pdev->dev, 1)) {
- ret = domain_add_dev_info(si_domain, &pdev->dev,
- hw ? CONTEXT_TT_PASS_THROUGH :
- CONTEXT_TT_MULTI_LEVEL);
- if (ret) {
- /* device not associated with an iommu */
- if (ret == -ENODEV)
- continue;
- return ret;
- }
- pr_info("IOMMU: %s identity mapping for device %s\n",
- hw ? "hardware" : "software", pci_name(pdev));
- }
+ ret = dev_prepare_static_identity_mapping(&pdev->dev, hw);
+ if (ret)
+ return ret;
}
+ for_each_active_iommu(iommu, drhd)
+ for_each_active_dev_scope(drhd->devices, drhd->devices_cnt, i, dev) {
+ struct acpi_device_physical_node *pn;
+ struct acpi_device *adev;
+
+ if (dev->bus != &acpi_bus_type)
+ continue;
+
+ adev= to_acpi_device(dev);
+ mutex_lock(&adev->physical_node_lock);
+ list_for_each_entry(pn, &adev->physical_node_list, node) {
+ ret = dev_prepare_static_identity_mapping(pn->dev, hw);
+ if (ret)
+ break;
+ }
+ mutex_unlock(&adev->physical_node_lock);
+ if (ret)
+ return ret;
+ }
+
return 0;
}