Commit 4d135dbe authored May 20, 2009 by Yu Zhao Committed by Jesse Barnes Jun 11, 2009

PCI: fix SR-IOV function dependency link problem



PCIe root complex integrated endpoint does not implement ARI, so this
kind of endpoint uses 3-bit function number. The function dependency
link of the integrated endpoint should be calculated using the device
number plus the value from function dependency link register.

Normal endpoint always implements ARI and the function dependency link
register contains 8-bit function number (i.e. `devfn' from software's
perspective).

Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

parent af4c5f98

drivers/pci/iov.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -487,6 +487,8 @@ found:
		iov->self = dev;
		pci_read_config_dword(dev, pos + PCI_SRIOV_CAP, &iov->cap);
		pci_read_config_byte(dev, pos + PCI_SRIOV_FUNC_LINK, &iov->link);
		if (dev->pcie_type == PCI_EXP_TYPE_RC_END)
		iov->link = PCI_DEVFN(PCI_SLOT(dev->devfn), iov->link);

		if (pdev)
		iov->dev = pci_dev_get(pdev);

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