diff options
| author | Cai Huoqing <caihuoqing@baidu.com> | 2021-07-13 17:37:43 +0800 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2021-07-14 13:47:17 -0600 |
| commit | 1bd9f1b14d1e9c1498bb03faf4e2bb945cf6542d (patch) | |
| tree | dbd86641cc12be46c2801b62243717e69cfec638 | |
| parent | 936555bc4f9efce1a9d35466845169c2c7566794 (diff) | |
| download | focaccia-qemu-1bd9f1b14d1e9c1498bb03faf4e2bb945cf6542d.tar.gz focaccia-qemu-1bd9f1b14d1e9c1498bb03faf4e2bb945cf6542d.zip | |
vfio/pci: Add pba_offset PCI quirk for BAIDU KUNLUN AI processor
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 <caihuoqing@baidu.com> Link: https://lore.kernel.org/r/20210713093743.942-1-caihuoqing@baidu.com [aw: comment & whitespace tuning] Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
| -rw-r--r-- | hw/vfio/pci.c | 8 | ||||
| -rw-r--r-- | include/hw/pci/pci_ids.h | 3 |
2 files changed, 11 insertions, 0 deletions
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 971273fd45..e1ea1d8a23 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 for KUNLUN AI processor + * return an incorrect value of 0x460000 for the VF PBA offset while + * the BAR itself is only 0x10000. The correct value is 0xb400. + */ + } else if (vfio_pci_is(vdev, PCI_VENDOR_ID_BAIDU, + 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..11abe22d46 100644 --- a/include/hw/pci/pci_ids.h +++ b/include/hw/pci/pci_ids.h @@ -227,6 +227,9 @@ #define PCI_VENDOR_ID_FREESCALE 0x1957 #define PCI_DEVICE_ID_MPC8533E 0x0030 +#define PCI_VENDOR_ID_BAIDU 0x1d22 +#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 |