Merge tag 'pull-request-2024-01-19' of https://gitlab.com/thuth/qemu into staging

[mirror_qemu.git] / hw / s390x / s390-pci-bus.c

diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c
index 2ca36f9f3be11866b6c9cb83a61da01d93a4b7c0..3e57d5faca18dec46f947fa30d5f69efb6c2620c 100644 (file)
--- a/hw/s390x/s390-pci-bus.c
+++ b/hw/s390x/s390-pci-bus.c
@@ -151,20 +151,12 @@ static void s390_pci_shutdown_notifier(Notifier *n, void *opaque)
     pci_device_reset(pbdev->pdev);
 }
 
-static void s390_pci_reset_cb(void *opaque)
-{
-    S390PCIBusDevice *pbdev = opaque;
-
-    pci_device_reset(pbdev->pdev);
-}
-
 static void s390_pci_perform_unplug(S390PCIBusDevice *pbdev)
 {
     HotplugHandler *hotplug_ctrl;
 
     if (pbdev->pft == ZPCI_PFT_ISM) {
         notifier_remove(&pbdev->shutdown_notifier);
-        qemu_unregister_reset(s390_pci_reset_cb, pbdev);
     }
 
     /* Unplug the PCI device */
@@ -652,6 +644,10 @@ static AddressSpace *s390_pci_dma_iommu(PCIBus *bus, void *opaque, int devfn)
     return &iommu->as;
 }
 
+static const PCIIOMMUOps s390_iommu_ops = {
+    .get_address_space = s390_pci_dma_iommu,
+};
+
 static uint8_t set_ind_atomic(uint64_t ind_loc, uint8_t to_be_set)
 {
     uint8_t expected, actual;
@@ -839,7 +835,7 @@ static void s390_pcihost_realize(DeviceState *dev, Error **errp)
     b = pci_register_root_bus(dev, NULL, s390_pci_set_irq, s390_pci_map_irq,
                               NULL, get_system_memory(), get_system_io(), 0,
                               64, TYPE_PCI_BUS);
-    pci_setup_iommu(b, s390_pci_dma_iommu, s);
+    pci_setup_iommu(b, &s390_iommu_ops, s);
 
     bus = BUS(b);
     qbus_set_hotplug_handler(bus, OBJECT(dev));
@@ -1058,7 +1054,7 @@ static void s390_pcihost_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
 
         pdev = PCI_DEVICE(dev);
         pci_bridge_map_irq(pb, dev->id, s390_pci_map_irq);
-        pci_setup_iommu(&pb->sec_bus, s390_pci_dma_iommu, s);
+        pci_setup_iommu(&pb->sec_bus, &s390_iommu_ops, s);
 
         qbus_set_hotplug_handler(BUS(&pb->sec_bus), OBJECT(s));
 
@@ -1128,7 +1124,6 @@ static void s390_pcihost_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
             if (pbdev->pft == ZPCI_PFT_ISM) {
                 pbdev->shutdown_notifier.notify = s390_pci_shutdown_notifier;
                 qemu_register_shutdown_notifier(&pbdev->shutdown_notifier);
-                qemu_register_reset(s390_pci_reset_cb, pbdev);
             }
         } else {
             pbdev->fh |= FH_SHM_EMUL;
@@ -1275,6 +1270,23 @@ static void s390_pci_enumerate_bridge(PCIBus *bus, PCIDevice *pdev,
     pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, s->bus_no, 1);
 }
 
+void s390_pci_ism_reset(void)
+{
+    S390pciState *s = s390_get_phb();
+
+    S390PCIBusDevice *pbdev, *next;
+
+    /* Trigger reset event for each passthrough ISM device currently in-use */
+    QTAILQ_FOREACH_SAFE(pbdev, &s->zpci_devs, link, next) {
+        if (pbdev->interp && pbdev->pft == ZPCI_PFT_ISM &&
+            pbdev->fh & FH_MASK_ENABLE) {
+            s390_pci_kvm_aif_disable(pbdev);
+
+            pci_device_reset(pbdev->pdev);
+        }
+    }
+}
+
 static void s390_pcihost_reset(DeviceState *dev)
 {
     S390pciState *s = S390_PCI_HOST_BRIDGE(dev);