diff options
| -rw-r--r-- | hw/ppc/spapr_pci.c | 115 |
1 files changed, 102 insertions, 13 deletions
diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c index 9d99bc0b4c..c8d7838385 100644 --- a/hw/ppc/spapr_pci.c +++ b/hw/ppc/spapr_pci.c @@ -1257,30 +1257,53 @@ static SpaprDrc *drc_from_dev(SpaprPhbState *phb, PCIDevice *dev) return drc_from_devfn(phb, chassis, dev->devfn); } -static void add_drcs(SpaprPhbState *phb) +static void add_drcs(SpaprPhbState *phb, PCIBus *bus, Error **errp) { + Object *owner; int i; + uint8_t chassis; + Error *local_err = NULL; if (!phb->dr_enabled) { return; } + chassis = chassis_from_bus(bus, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + if (pci_bus_is_root(bus)) { + owner = OBJECT(phb); + } else { + owner = OBJECT(pci_bridge_get_device(bus)); + } + for (i = 0; i < PCI_SLOT_MAX * PCI_FUNC_MAX; i++) { - spapr_dr_connector_new(OBJECT(phb), TYPE_SPAPR_DRC_PCI, - drc_id_from_devfn(phb, 0, i)); + spapr_dr_connector_new(owner, TYPE_SPAPR_DRC_PCI, + drc_id_from_devfn(phb, chassis, i)); } } -static void remove_drcs(SpaprPhbState *phb) +static void remove_drcs(SpaprPhbState *phb, PCIBus *bus, Error **errp) { int i; + uint8_t chassis; + Error *local_err = NULL; if (!phb->dr_enabled) { return; } + chassis = chassis_from_bus(bus, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + for (i = PCI_SLOT_MAX * PCI_FUNC_MAX - 1; i >= 0; i--) { - SpaprDrc *drc = drc_from_devfn(phb, 0, i); + SpaprDrc *drc = drc_from_devfn(phb, chassis, i); if (drc) { object_unparent(OBJECT(drc)); @@ -1325,6 +1348,7 @@ static int spapr_dt_pci_bus(SpaprPhbState *sphb, PCIBus *bus, .sphb = sphb, .err = 0, }; + int ret; _FDT(fdt_setprop_cell(fdt, offset, "#address-cells", RESOURCE_CELLS_ADDRESS)); @@ -1339,6 +1363,12 @@ static int spapr_dt_pci_bus(SpaprPhbState *sphb, PCIBus *bus, } } + ret = spapr_dt_drc(fdt, offset, OBJECT(bus->parent_dev), + SPAPR_DR_CONNECTOR_TYPE_PCI); + if (ret) { + return ret; + } + return offset; } @@ -1483,11 +1513,26 @@ int spapr_pci_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr, return 0; } +static void spapr_pci_bridge_plug(SpaprPhbState *phb, + PCIBridge *bridge, + Error **errp) +{ + Error *local_err = NULL; + PCIBus *bus = pci_bridge_get_sec_bus(bridge); + + add_drcs(phb, bus, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } +} + static void spapr_pci_plug(HotplugHandler *plug_handler, DeviceState *plugged_dev, Error **errp) { SpaprPhbState *phb = SPAPR_PCI_HOST_BRIDGE(DEVICE(plug_handler)); PCIDevice *pdev = PCI_DEVICE(plugged_dev); + PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(plugged_dev); SpaprDrc *drc = drc_from_dev(phb, pdev); Error *local_err = NULL; PCIBus *bus = PCI_BUS(qdev_get_parent_bus(DEVICE(pdev))); @@ -1509,6 +1554,14 @@ static void spapr_pci_plug(HotplugHandler *plug_handler, g_assert(drc); + if (pc->is_bridge) { + spapr_pci_bridge_plug(phb, PCI_BRIDGE(plugged_dev), &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + } + /* Following the QEMU convention used for PCIe multifunction * hotplug, we do not allow functions to be hotplugged to a * slot that already has function 0 present @@ -1559,9 +1612,26 @@ out: error_propagate(errp, local_err); } +static void spapr_pci_bridge_unplug(SpaprPhbState *phb, + PCIBridge *bridge, + Error **errp) +{ + Error *local_err = NULL; + PCIBus *bus = pci_bridge_get_sec_bus(bridge); + + remove_drcs(phb, bus, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } +} + static void spapr_pci_unplug(HotplugHandler *plug_handler, DeviceState *plugged_dev, Error **errp) { + PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(plugged_dev); + SpaprPhbState *phb = SPAPR_PCI_HOST_BRIDGE(DEVICE(plug_handler)); + /* some version guests do not wait for completion of a device * cleanup (generally done asynchronously by the kernel) before * signaling to QEMU that the device is safe, but instead sleep @@ -1573,6 +1643,16 @@ static void spapr_pci_unplug(HotplugHandler *plug_handler, * an 'idle' state, as the device cleanup code expects. */ pci_device_reset(PCI_DEVICE(plugged_dev)); + + if (pc->is_bridge) { + Error *local_err = NULL; + spapr_pci_bridge_unplug(phb, PCI_BRIDGE(plugged_dev), &local_err); + if (local_err) { + error_propagate(errp, local_err); + } + return; + } + object_property_set_bool(OBJECT(plugged_dev), false, "realized", NULL); } @@ -1593,6 +1673,7 @@ static void spapr_pci_unplug_request(HotplugHandler *plug_handler, g_assert(drc->dev == plugged_dev); if (!spapr_drc_unplug_requested(drc)) { + PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(plugged_dev); uint32_t slotnr = PCI_SLOT(pdev->devfn); SpaprDrc *func_drc; SpaprDrcClass *func_drck; @@ -1606,6 +1687,10 @@ static void spapr_pci_unplug_request(HotplugHandler *plug_handler, return; } + if (pc->is_bridge) { + error_setg(errp, "PCI: Hot unplug of PCI bridges not supported"); + } + /* ensure any other present functions are pending unplug */ if (PCI_FUNC(pdev->devfn) == 0) { for (i = 1; i < 8; i++) { @@ -1658,6 +1743,7 @@ static void spapr_phb_unrealize(DeviceState *dev, Error **errp) SpaprTceTable *tcet; int i; const unsigned windows_supported = spapr_phb_windows_supported(sphb); + Error *local_err = NULL; spapr_phb_nvgpu_free(sphb); @@ -1678,7 +1764,11 @@ static void spapr_phb_unrealize(DeviceState *dev, Error **errp) } } - remove_drcs(sphb); + remove_drcs(sphb, phb->bus, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } for (i = PCI_NUM_PINS - 1; i >= 0; i--) { if (sphb->lsi_table[i].irq) { @@ -1721,6 +1811,7 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp) uint64_t msi_window_size = 4096; SpaprTceTable *tcet; const unsigned windows_supported = spapr_phb_windows_supported(sphb); + Error *local_err = NULL; if (!spapr) { error_setg(errp, TYPE_SPAPR_PCI_HOST_BRIDGE " needs a pseries machine"); @@ -1873,7 +1964,6 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp) /* Initialize the LSI table */ for (i = 0; i < PCI_NUM_PINS; i++) { uint32_t irq = SPAPR_IRQ_PCI_LSI + sphb->index * PCI_NUM_PINS + i; - Error *local_err = NULL; if (smc->legacy_irq_allocation) { irq = spapr_irq_findone(spapr, &local_err); @@ -1898,7 +1988,11 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp) } /* allocate connectors for child PCI devices */ - add_drcs(sphb); + add_drcs(sphb, phb->bus, &local_err); + if (local_err) { + error_propagate(errp, local_err); + goto unrealize; + } /* DMA setup */ for (i = 0; i < windows_supported; ++i) { @@ -2314,11 +2408,6 @@ int spapr_dt_phb(SpaprPhbState *phb, uint32_t intc_phandle, void *fdt, return ret; } - ret = spapr_dt_drc(fdt, bus_off, OBJECT(phb), SPAPR_DR_CONNECTOR_TYPE_PCI); - if (ret) { - return ret; - } - spapr_phb_nvgpu_populate_dt(phb, fdt, bus_off, &errp); if (errp) { error_report_err(errp); |