Enable VF 10-Bit Tag Requester when it's upstream component support 10-bit Tag Completer. Signed-off-by: Dongdong Liu <liudongdong3@xxxxxxxxxx> Reviewed-by: Christoph Hellwig <hch@xxxxxx> --- drivers/pci/iov.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index dafdc65..0d0bed1 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -634,6 +634,10 @@ 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) + 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); @@ -650,6 +654,8 @@ 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); @@ -682,6 +688,8 @@ 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); -- 2.7.4
