Fix pba_offset initialization value for BAIDU KUNLUN Virtual Function device. The KUNLUN hardware returns an incorrect value for the VF PBA offset, and add a quirk to instead return a hardcoded value of 0xb400.
Signed-off-by: Cai Huoqing <caihuoq...@baidu.com> --- hw/vfio/pci.c | 8 ++++++++ include/hw/pci/pci_ids.h | 4 ++++ 2 files changed, 12 insertions(+) diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index ab4077aad2..72b7abf623 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -1499,6 +1499,14 @@ static void vfio_msix_early_setup(VFIOPCIDevice *vdev, Error **errp) if (vdev->vendor_id == PCI_VENDOR_ID_CHELSIO && (vdev->device_id & 0xff00) == 0x5800) { msix->pba_offset = 0x1000; + /* + * BAIDU KUNLUN Virtual Function devices are encoded as 0x3685 for + * KUNLUN AI processor. The KUNLUN hardware returns an incorrect + * value for the VF PBA offset. The correct value is 0xb400. + */ + } else if (vdev->vendor_id == PCI_VENDOR_ID_BAIDU && + vdev->device_id == PCI_DEVICE_ID_KUNLUN_VF) { + msix->pba_offset = 0xb400; } else if (vdev->msix_relo == OFF_AUTOPCIBAR_OFF) { error_setg(errp, "hardware reports invalid configuration, " "MSIX PBA outside of specified BAR"); diff --git a/include/hw/pci/pci_ids.h b/include/hw/pci/pci_ids.h index 5c14681b82..bc73c50277 100644 --- a/include/hw/pci/pci_ids.h +++ b/include/hw/pci/pci_ids.h @@ -227,6 +227,10 @@ #define PCI_VENDOR_ID_FREESCALE 0x1957 #define PCI_DEVICE_ID_MPC8533E 0x0030 +#define PCI_VENDOR_ID_BAIDU 0x1d22 +#define PCI_DEVICE_ID_KUNLUN 0x3684 +#define PCI_DEVICE_ID_KUNLUN_VF 0x3685 + #define PCI_VENDOR_ID_INTEL 0x8086 #define PCI_DEVICE_ID_INTEL_82378 0x0484 #define PCI_DEVICE_ID_INTEL_82441 0x1237 -- 2.25.1