@@ -537,6 +537,10 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn)
pci_iov_set_numvfs(dev, nr_virtfn);
iov->ctrl |= PCI_SRIOV_CTRL_VFE | PCI_SRIOV_CTRL_MSE;
+ if ((iov->cap & PCI_SRIOV_CAP_VF_10BIT_TAG_REQ) &&
+ dev->ext_10bit_tag_comp_path)
+ iov->ctrl |= PCI_SRIOV_CTRL_VF_10BIT_TAG_REQ_EN;
+
pci_cfg_access_lock(dev);
pci_write_config_word(dev, iov->pos + PCI_SRIOV_CTRL, iov->ctrl);
msleep(100);
@@ -553,6 +557,8 @@ static int sriov_enable(struct pci_dev *dev, int nr_virtfn)
err_pcibios:
iov->ctrl &= ~(PCI_SRIOV_CTRL_VFE | PCI_SRIOV_CTRL_MSE);
+ if (iov->ctrl & PCI_SRIOV_CTRL_VF_10BIT_TAG_REQ_EN)
+ iov->ctrl &= ~PCI_SRIOV_CTRL_VF_10BIT_TAG_REQ_EN;
pci_cfg_access_lock(dev);
pci_write_config_word(dev, iov->pos + PCI_SRIOV_CTRL, iov->ctrl);
ssleep(1);
@@ -585,6 +591,8 @@ static void sriov_disable(struct pci_dev *dev)
sriov_del_vfs(dev);
iov->ctrl &= ~(PCI_SRIOV_CTRL_VFE | PCI_SRIOV_CTRL_MSE);
+ if (iov->ctrl & PCI_SRIOV_CTRL_VF_10BIT_TAG_REQ_EN)
+ iov->ctrl &= ~PCI_SRIOV_CTRL_VF_10BIT_TAG_REQ_EN;
pci_cfg_access_lock(dev);
pci_write_config_word(dev, iov->pos + PCI_SRIOV_CTRL, iov->ctrl);
ssleep(1);
Enable VF 10-Bit Tag Requester when it's upstream component support 10-bit Tag Completer. Signed-off-by: Dongdong Liu <liudongdong3@huawei.com> --- drivers/pci/iov.c | 8 ++++++++ 1 file changed, 8 insertions(+)