diff options
| author | Alex Williamson <alex.williamson@redhat.com> | 2013-03-14 16:01:35 -0600 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2013-03-26 21:02:18 +0200 |
| commit | eb28cb1bb0cb156aef7e613395af403bba0e7f30 (patch) | |
| tree | 05aaa53dab88b87b89566679072c90b909262bf8 | |
| parent | 0889464a5050c25611d08ca33d8447796c88c7f7 (diff) | |
pcie: Mangle types to match topology
Windows will fail to start drivers for devices with an Endpoint type
PCIe capability attached to a Root Complex (code 10 - Device cannot
start). The proper type for such a device is Root Complex Integrated
Endpoint. Devices don't care which they are, so do this conversion
automatically.
This allows the Windows driver to load for nec-usb-xhci when attached
to pcie.0 of a q35 machine.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/pci/pcie.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c index 485c94c1b2..bcfbae4332 100644 --- a/hw/pci/pcie.c +++ b/hw/pci/pcie.c @@ -48,6 +48,19 @@ int pcie_cap_init(PCIDevice *dev, uint8_t offset, uint8_t type, uint8_t port) assert(pci_is_express(dev)); + /* + * Mangle type to convert Endpoints to Root Complex Integrated Endpoints. + * Windows will report Code 10 (device cannot start) for regular Endpoints + * on the Root Complex. + */ + if (pci_bus_is_express(dev->bus) && pci_bus_is_root(dev->bus)) { + switch (type) { + case PCI_EXP_TYPE_ENDPOINT: + type = PCI_EXP_TYPE_RC_END; + break; + } + } + pos = pci_add_capability(dev, PCI_CAP_ID_EXP, offset, PCI_EXP_VER2_SIZEOF); if (pos < 0) { |