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authorAlex Williamson <alex.williamson@redhat.com>2014-05-28 22:57:02 +0200
committerBjorn Helgaas <bhelgaas@google.com>2014-05-28 23:52:52 +0200
commitc8fe16e3f96a9bb95a10cedb19d2be2d2d580940 (patch)
tree56df91477693c6098939afdce0a75e7c604ee732 /include
parentPCI: Add function 1 DMA alias quirk for Marvell devices (diff)
downloadlinux-c8fe16e3f96a9bb95a10cedb19d2be2d2d580940.tar.xz
linux-c8fe16e3f96a9bb95a10cedb19d2be2d2d580940.zip
PCI: Add support for PCIe-to-PCI bridge DMA alias quirks
Several PCIe-to-PCI bridges fail to provide a PCIe capability, causing us to handle them as conventional PCI devices when they really use the requester ID of the secondary bus. We need to differentiate these from PCIe-to-PCI bridges that actually use the conventional PCI ID when a PCIe capability is not present, such as those found on the root complex of may Intel chipsets. Add a dev_flag bit to identify devices to be handled as standard PCIe-to-PCI bridges. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/pci.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 9d4035c276f4..85ab35e974a9 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -173,6 +173,8 @@ enum pci_dev_flags {
PCI_DEV_FLAGS_ACS_ENABLED_QUIRK = (__force pci_dev_flags_t) (1 << 3),
/* Flag to indicate the device uses dma_alias_devfn */
PCI_DEV_FLAGS_DMA_ALIAS_DEVFN = (__force pci_dev_flags_t) (1 << 4),
+ /* Use a PCIe-to-PCI bridge alias even if !pci_is_pcie */
+ PCI_DEV_FLAG_PCIE_BRIDGE_ALIAS = (__force pci_dev_flags_t) (1 << 5),
};
enum pci_irq_reroute_variant {