diff options
Diffstat (limited to 'hw/pci')
| -rw-r--r-- | hw/pci/pcie.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c index 0eb3a2a5d2..6b48d04d2c 100644 --- a/hw/pci/pcie.c +++ b/hw/pci/pcie.c @@ -415,6 +415,7 @@ void pcie_cap_slot_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, { PCIDevice *hotplug_pdev = PCI_DEVICE(hotplug_dev); uint8_t *exp_cap = hotplug_pdev->config + hotplug_pdev->exp.exp_cap; + uint32_t sltcap = pci_get_word(exp_cap + PCI_EXP_SLTCAP); PCIDevice *pci_dev = PCI_DEVICE(dev); /* Don't send event when device is enabled during qemu machine creation: @@ -430,6 +431,13 @@ void pcie_cap_slot_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, return; } + /* Check if hot-plug is disabled on the slot */ + if ((sltcap & PCI_EXP_SLTCAP_HPC) == 0) { + error_setg(errp, "Hot-plug failed: unsupported by the port device '%s'", + DEVICE(hotplug_pdev)->id); + return; + } + /* To enable multifunction hot-plug, we just ensure the function * 0 added last. When function 0 is added, we set the sltsta and * inform OS via event notification. @@ -470,6 +478,17 @@ void pcie_cap_slot_unplug_request_cb(HotplugHandler *hotplug_dev, Error *local_err = NULL; PCIDevice *pci_dev = PCI_DEVICE(dev); PCIBus *bus = pci_get_bus(pci_dev); + PCIDevice *hotplug_pdev = PCI_DEVICE(hotplug_dev); + uint8_t *exp_cap = hotplug_pdev->config + hotplug_pdev->exp.exp_cap; + uint32_t sltcap = pci_get_word(exp_cap + PCI_EXP_SLTCAP); + + /* Check if hot-unplug is disabled on the slot */ + if ((sltcap & PCI_EXP_SLTCAP_HPC) == 0) { + error_setg(errp, "Hot-unplug failed: " + "unsupported by the port device '%s'", + DEVICE(hotplug_pdev)->id); + return; + } pcie_cap_slot_plug_common(PCI_DEVICE(hotplug_dev), dev, &local_err); if (local_err) { |