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PCI: Handle Enhanced Allocation capability for SR-IOV devices

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SR-IOV BARs can be specified via EA entries.  Extend the EA parser to
extract the SRIOV BAR resources, and modify sriov_init() to use resources
previously obtained via EA.

Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Sean O. Stalley <sean.stalley@intel.com>
This commit is contained in:
David Daney
2015-10-29 17:35:40 -05:00
committed by Bjorn Helgaas
parent 938174e59f
commit 111839917f
2 changed files with 15 additions and 2 deletions
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6
drivers/pci/pci.c
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@@ -2176,6 +2176,12 @@ static struct resource *pci_ea_get_resource(struct pci_dev *dev, u8 bei,
{
if (bei <= PCI_EA_BEI_BAR5 && prop <= PCI_EA_P_IO)
return &dev->resource[bei];
#ifdef CONFIG_PCI_IOV
else if (bei >= PCI_EA_BEI_VF_BAR0 && bei <= PCI_EA_BEI_VF_BAR5 &&
(prop == PCI_EA_P_VF_MEM || prop == PCI_EA_P_VF_MEM_PREFETCH))
return &dev->resource[PCI_IOV_RESOURCES +
bei - PCI_EA_BEI_VF_BAR0];
#endif
else if (bei == PCI_EA_BEI_ROM)
return &dev->resource[PCI_ROM_RESOURCE];
else