diff options
Diffstat (limited to 'hw/pci-bridge/pci_bridge_dev.c')
| -rw-r--r-- | hw/pci-bridge/pci_bridge_dev.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/hw/pci-bridge/pci_bridge_dev.c b/hw/pci-bridge/pci_bridge_dev.c index 0fbecc4bbd..5dbd933cc1 100644 --- a/hw/pci-bridge/pci_bridge_dev.c +++ b/hw/pci-bridge/pci_bridge_dev.c @@ -54,6 +54,7 @@ static int pci_bridge_dev_initfn(PCIDevice *dev) PCIBridge *br = PCI_BRIDGE(dev); PCIBridgeDev *bridge_dev = PCI_BRIDGE_DEV(dev); int err; + Error *local_err = NULL; pci_bridge_initfn(dev, TYPE_PCI_BUS); @@ -75,12 +76,23 @@ static int pci_bridge_dev_initfn(PCIDevice *dev) goto slotid_error; } - if (bridge_dev->msi != ON_OFF_AUTO_OFF && - msi_nonbroken) { - err = msi_init(dev, 0, 1, true, true); - if (err < 0) { + if (bridge_dev->msi != ON_OFF_AUTO_OFF) { + /* it means SHPC exists, because MSI is needed by SHPC */ + + err = msi_init(dev, 0, 1, true, true, &local_err); + /* Any error other than -ENOTSUP(board's MSI support is broken) + * is a programming error */ + assert(!err || err == -ENOTSUP); + if (err && bridge_dev->msi == ON_OFF_AUTO_ON) { + /* Can't satisfy user's explicit msi=on request, fail */ + error_append_hint(&local_err, "You have to use msi=auto (default) " + "or msi=off with this machine type.\n"); + error_report_err(local_err); goto msi_error; } + assert(!local_err || bridge_dev->msi == ON_OFF_AUTO_AUTO); + /* With msi=auto, we fall back to MSI off silently */ + error_free(local_err); } if (shpc_present(dev)) { |