diff options
| author | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2014-09-09 11:19:43 +0100 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2014-09-10 07:20:53 +0200 |
| commit | e6043e92c2812a56b8f6cf35d5512067c746ce21 (patch) | |
| tree | 0d5bfce0364b24db2535198502b2cbc3cfaf884b /hw/usb | |
| parent | f102f224556f292f55b6e25147741bb8c48c9451 (diff) | |
| download | qemu-e6043e92c2812a56b8f6cf35d5512067c746ce21.tar.gz qemu-e6043e92c2812a56b8f6cf35d5512067c746ce21.tar.bz2 qemu-e6043e92c2812a56b8f6cf35d5512067c746ce21.zip | |
xhci PCIe endpoint migration compatibility fix
Add back the PCIe config capabilities on XHCI cards in non-PCIe slots,
but only for machine types before 2.1.
This fixes a migration incompatibility in the XHCI PCI devices
caused by:
058fdcf52cdbf57b67e7 - xhci: add endpoint cap on express bus only
Note that in fixing it for compatibility with older QEMUs, it breaks
compatibility with existing QEMU 2.1's on older machine types.
The status before this patch was (if it used an XHCI adapter):
machine type | source qemu
any pre-2.1 - FAIL
any 2.1... - PASS
With this patch:
machine type | source qemu
any pre-2.1 - PASS
pre-2.1 2.1... - FAIL
2.1 2.1... - PASS
A test to trigger it is to add '-device nec-usb-xhci,id=xhci,addr=0x12'
to the command line.
Cc: qemu-stable@nongnu.org
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw/usb')
| -rw-r--r-- | hw/usb/hcd-xhci.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c index bbe4c5fb85..73ced1f5f8 100644 --- a/hw/usb/hcd-xhci.c +++ b/hw/usb/hcd-xhci.c @@ -499,6 +499,7 @@ enum xhci_flags { XHCI_FLAG_USE_MSI = 1, XHCI_FLAG_USE_MSI_X, XHCI_FLAG_SS_FIRST, + XHCI_FLAG_FORCE_PCIE_ENDCAP, }; static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid, @@ -3626,7 +3627,8 @@ static int usb_xhci_initfn(struct PCIDevice *dev) PCI_BASE_ADDRESS_SPACE_MEMORY|PCI_BASE_ADDRESS_MEM_TYPE_64, &xhci->mem); - if (pci_bus_is_express(dev->bus)) { + if (pci_bus_is_express(dev->bus) || + xhci_get_flag(xhci, XHCI_FLAG_FORCE_PCIE_ENDCAP)) { ret = pcie_endpoint_cap_init(dev, 0xa0); assert(ret >= 0); } @@ -3855,6 +3857,8 @@ static Property xhci_properties[] = { DEFINE_PROP_BIT("msix", XHCIState, flags, XHCI_FLAG_USE_MSI_X, true), DEFINE_PROP_BIT("superspeed-ports-first", XHCIState, flags, XHCI_FLAG_SS_FIRST, true), + DEFINE_PROP_BIT("force-pcie-endcap", XHCIState, flags, + XHCI_FLAG_FORCE_PCIE_ENDCAP, false), DEFINE_PROP_UINT32("intrs", XHCIState, numintrs, MAXINTRS), DEFINE_PROP_UINT32("slots", XHCIState, numslots, MAXSLOTS), DEFINE_PROP_UINT32("p2", XHCIState, numports_2, 4), |