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s390x/pci: PCI multibus bridge handling

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When the hotplug handler detects a PCI bridge, the secondary bus has
been initialized by the core PCI code. We give the secondary bus the
bridge name and associate to it the IOMMU handling and
hotplug/hotunplug callbacks.

Signed-off-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Pierre Morel 2016-10-24 14:50:35 +02:00 committed by Cornelia Huck
parent a975a24aed
commit 3fc92a24f3
1 changed files with 15 additions and 2 deletions
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17
hw/s390x/s390-pci-bus.c
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@ -19,6 +19,7 @@
#include "s390-pci-bus.h"
#include "s390-pci-inst.h"
#include "hw/pci/pci_bus.h"
#include "hw/pci/pci_bridge.h"
#include "hw/pci/msi.h"
#include "qemu/error-report.h"
@ -677,7 +678,16 @@ static void s390_pcihost_hot_plug(HotplugHandler *hotplug_dev,
S390PCIBusDevice *pbdev = NULL;
S390pciState *s = s390_get_phb();
if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) {
BusState *bus;
PCIBridge *pb = PCI_BRIDGE(dev);
pci_bridge_map_irq(pb, dev->id, s390_pci_map_irq);
pci_setup_iommu(&pb->sec_bus, s390_pci_dma_iommu, s);
bus = BUS(&pb->sec_bus);
qbus_set_hotplug_handler(bus, DEVICE(s), errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
pdev = PCI_DEVICE(dev);
if (!dev->id) {
@ -754,7 +764,10 @@ static void s390_pcihost_hot_unplug(HotplugHandler *hotplug_dev,
S390PCIBusDevice *pbdev = NULL;
S390pciState *s = s390_get_phb();
if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) {
error_setg(errp, "PCI bridge hot unplug currently not supported");
return;
} else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
pci_dev = PCI_DEVICE(dev);
QTAILQ_FOREACH(pbdev, &s->zpci_devs, link) {