pci_endpt_partioning = check_pci_ctl_endpt_part(pci_ctl);
/* We can partition PCIe devices so assign device group to the device */
if (pci_endpt_partioning) {
----- bridge = pci_find_upstream_pcie_bridge(pdev);
----- if (bridge) {
----- if (pci_is_pcie(bridge))
----- dma_pdev = pci_get_domain_bus_and_slot(
----- pci_domain_nr(pdev->bus),
----- bridge->subordinate->number, 0);
----- if (!dma_pdev)
----- dma_pdev = pci_dev_get(bridge);
----- } else
----- dma_pdev = pci_dev_get(pdev);
-----
----- /* Account for quirked devices */
----- swap_pci_ref(&dma_pdev, pci_get_dma_source(dma_pdev));
-----
----- /*
----- * If it's a multifunction device that does not support our
----- * required ACS flags, add to the same group as lowest numbered
----- * function that also does not suport the required ACS flags.
----- */
----- if (dma_pdev->multifunction &&
----- !pci_acs_enabled(dma_pdev, REQ_ACS_FLAGS)) {
----- u8 i, slot = PCI_SLOT(dma_pdev->devfn);
-----
----- for (i = 0; i < 8; i++) {
----- struct pci_dev *tmp;
-----
----- tmp = pci_get_slot(dma_pdev->bus, PCI_DEVFN(slot, i));
----- if (!tmp)
----- continue;
-----
----- if (!pci_acs_enabled(tmp, REQ_ACS_FLAGS)) {
----- swap_pci_ref(&dma_pdev, tmp);
----- break;
----- }
----- pci_dev_put(tmp);
- }
- }
-
- /*
- * Devices on the root bus go through the iommu. If that's not us,
- * find the next upstream device and test ACS up to the root bus.
- * Finding the next device may require skipping virtual buses.
- */
- while (!pci_is_root_bus(dma_pdev->bus)) {
- struct pci_bus *bus = dma_pdev->bus;
-
- while (!bus->self) {
- if (!pci_is_root_bus(bus))
- bus = bus->parent;
- else
- goto root_bus;
----- }
-
- if (pci_acs_path_enabled(bus->self, NULL, REQ_ACS_FLAGS))
- break;
-
- swap_pci_ref(&dma_pdev, pci_dev_get(bus->self));
----- }
+++++ group = iommu_group_get_for_dev(&pdev->dev);
---- /*
---- * Devices on the root bus go through the iommu. If that's not us,
---- * find the next upstream device and test ACS up to the root bus.
---- * Finding the next device may require skipping virtual buses.
---- */
---- while (!pci_is_root_bus(dma_pdev->bus)) {
---- struct pci_bus *bus = dma_pdev->bus;
----
---- while (!bus->self) {
---- if (!pci_is_root_bus(bus))
---- bus = bus->parent;
---- else
---- goto root_bus;
---- }
----
---- if (pci_acs_path_enabled(bus->self, NULL, REQ_ACS_FLAGS))
---- break;
----
---- swap_pci_ref(&dma_pdev, pci_dev_get(bus->self));
---- }
----
----- root_bus:
----- group = get_device_iommu_group(&dma_pdev->dev);
----- pci_dev_put(dma_pdev);
/*
* PCIe controller is not a paritionable entity
* free the controller device iommu_group.