diff options
| -rw-r--r-- | hw/ppc/spapr_pci.c | 86 | ||||
| -rw-r--r-- | include/hw/pci-host/spapr.h | 5 |
2 files changed, 87 insertions, 4 deletions
diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c index e2bc9fe..ede928b 100644 --- a/hw/ppc/spapr_pci.c +++ b/hw/ppc/spapr_pci.c @@ -1570,6 +1570,75 @@ static void spapr_pci_unplug_request(HotplugHandler *plug_handler, } } +static void spapr_phb_finalizefn(Object *obj) +{ + sPAPRPHBState *sphb = SPAPR_PCI_HOST_BRIDGE(obj); + + g_free(sphb->dtbusname); + sphb->dtbusname = NULL; +} + +static void spapr_phb_unrealize(DeviceState *dev, Error **errp) +{ + sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); + SysBusDevice *s = SYS_BUS_DEVICE(dev); + PCIHostState *phb = PCI_HOST_BRIDGE(s); + sPAPRPHBState *sphb = SPAPR_PCI_HOST_BRIDGE(phb); + sPAPRTCETable *tcet; + int i; + const unsigned windows_supported = spapr_phb_windows_supported(sphb); + + if (sphb->msi) { + g_hash_table_unref(sphb->msi); + sphb->msi = NULL; + } + + /* + * Remove IO/MMIO subregions and aliases, rest should get cleaned + * via PHB's unrealize->object_finalize + */ + for (i = windows_supported - 1; i >= 0; i--) { + tcet = spapr_tce_find_by_liobn(sphb->dma_liobn[i]); + if (tcet) { + memory_region_del_subregion(&sphb->iommu_root, + spapr_tce_get_iommu(tcet)); + } + } + + if (sphb->dr_enabled) { + for (i = PCI_SLOT_MAX * 8 - 1; i >= 0; i--) { + sPAPRDRConnector *drc = spapr_drc_by_id(TYPE_SPAPR_DRC_PCI, + (sphb->index << 16) | i); + + if (drc) { + object_unparent(OBJECT(drc)); + } + } + } + + for (i = PCI_NUM_PINS - 1; i >= 0; i--) { + if (sphb->lsi_table[i].irq) { + spapr_irq_free(spapr, sphb->lsi_table[i].irq, 1); + sphb->lsi_table[i].irq = 0; + } + } + + QLIST_REMOVE(sphb, list); + + memory_region_del_subregion(&sphb->iommu_root, &sphb->msiwindow); + + address_space_destroy(&sphb->iommu_as); + + qbus_set_hotplug_handler(BUS(phb->bus), NULL, &error_abort); + pci_unregister_root_bus(phb->bus); + + memory_region_del_subregion(get_system_memory(), &sphb->iowindow); + if (sphb->mem64_win_pciaddr != (hwaddr)-1) { + memory_region_del_subregion(get_system_memory(), &sphb->mem64window); + } + memory_region_del_subregion(get_system_memory(), &sphb->mem32window); +} + static void spapr_phb_realize(DeviceState *dev, Error **errp) { /* We don't use SPAPR_MACHINE() in order to exit gracefully if the user @@ -1587,8 +1656,7 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp) PCIBus *bus; uint64_t msi_window_size = 4096; sPAPRTCETable *tcet; - const unsigned windows_supported = - sphb->ddw_enabled ? SPAPR_PCI_DMA_MAX_WINDOWS : 1; + const unsigned windows_supported = spapr_phb_windows_supported(sphb); if (!spapr) { error_setg(errp, TYPE_SPAPR_PCI_HOST_BRIDGE " needs a pseries machine"); @@ -1745,6 +1813,10 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp) if (local_err) { error_propagate_prepend(errp, local_err, "can't allocate LSIs: "); + /* + * Older machines will never support PHB hotplug, ie, this is an + * init only path and QEMU will terminate. No need to rollback. + */ return; } } @@ -1752,7 +1824,7 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp) spapr_irq_claim(spapr, irq, true, &local_err); if (local_err) { error_propagate_prepend(errp, local_err, "can't allocate LSIs: "); - return; + goto unrealize; } sphb->lsi_table[i].irq = irq; @@ -1772,13 +1844,17 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp) if (!tcet) { error_setg(errp, "Creating window#%d failed for %s", i, sphb->dtbusname); - return; + goto unrealize; } memory_region_add_subregion(&sphb->iommu_root, 0, spapr_tce_get_iommu(tcet)); } sphb->msi = g_hash_table_new_full(g_int_hash, g_int_equal, g_free, g_free); + return; + +unrealize: + spapr_phb_unrealize(dev, NULL); } static int spapr_phb_children_reset(Object *child, void *opaque) @@ -1977,6 +2053,7 @@ static void spapr_phb_class_init(ObjectClass *klass, void *data) hc->root_bus_path = spapr_phb_root_bus_path; dc->realize = spapr_phb_realize; + dc->unrealize = spapr_phb_unrealize; dc->props = spapr_phb_properties; dc->reset = spapr_phb_reset; dc->vmsd = &vmstate_spapr_pci; @@ -1992,6 +2069,7 @@ static const TypeInfo spapr_phb_info = { .name = TYPE_SPAPR_PCI_HOST_BRIDGE, .parent = TYPE_PCI_HOST_BRIDGE, .instance_size = sizeof(sPAPRPHBState), + .instance_finalize = spapr_phb_finalizefn, .class_init = spapr_phb_class_init, .interfaces = (InterfaceInfo[]) { { TYPE_HOTPLUG_HANDLER }, diff --git a/include/hw/pci-host/spapr.h b/include/hw/pci-host/spapr.h index f6e43f4..4b0443f 100644 --- a/include/hw/pci-host/spapr.h +++ b/include/hw/pci-host/spapr.h @@ -165,4 +165,9 @@ static inline void spapr_phb_vfio_reset(DeviceState *qdev) void spapr_phb_dma_reset(sPAPRPHBState *sphb); +static inline unsigned spapr_phb_windows_supported(sPAPRPHBState *sphb) +{ + return sphb->ddw_enabled ? SPAPR_PCI_DMA_MAX_WINDOWS : 1; +} + #endif /* PCI_HOST_SPAPR_H */ |