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iommu/s390: Add support for iommu_device handling

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Add support for the iommu_device_register interface to make
the s390 hardware iommus visible to the iommu core and in
sysfs.

Acked-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel
2017-04-27 14:44:06 +02:00
parent ef954844c7
commit f42c223514
3 changed files with 50 additions and 1 deletions
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9
arch/s390/pci/pci.c
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@@ -776,6 +776,7 @@ void pcibios_remove_bus(struct pci_bus *bus)
zpci_exit_slot(zdev);
zpci_cleanup_bus_resources(zdev);
zpci_destroy_iommu(zdev);
zpci_free_domain(zdev);
spin_lock(&zpci_list_lock);
@@ -848,11 +849,15 @@ int zpci_create_device(struct zpci_dev *zdev)
if (rc)
goto out;
rc = zpci_init_iommu(zdev);
if (rc)
goto out_free;
mutex_init(&zdev->lock);
if (zdev->state == ZPCI_FN_STATE_CONFIGURED) {
rc = zpci_enable_device(zdev);
if (rc)
goto out_free;
goto out_destroy_iommu;
}
rc = zpci_scan_bus(zdev);
if (rc)
@@ -869,6 +874,8 @@ int zpci_create_device(struct zpci_dev *zdev)
out_disable:
if (zdev->state == ZPCI_FN_STATE_ONLINE)
zpci_disable_device(zdev);
out_destroy_iommu:
zpci_destroy_iommu(zdev);
out_free:
zpci_free_domain(zdev);
out: