PCI: Add support for DMA alias quirks

[deliverable/linux.git] / include / linux / pci.h

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 545903df00dc46ef51ec3c929903ec5cf2930122..9d4035c276f47df39cf7d0415e80df4d1cc7f7c0 100644 (file)
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -171,6 +171,8 @@ enum pci_dev_flags {
        PCI_DEV_FLAGS_ASSIGNED = (__force pci_dev_flags_t) (1 << 2),
        /* Flag for quirk use to store if quirk-specific ACS is enabled */
        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),
 };
 
 enum pci_irq_reroute_variant {
@@ -268,6 +270,7 @@ struct pci_dev {
        u8              rom_base_reg;   /* which config register controls the ROM */
        u8              pin;            /* which interrupt pin this device uses */
        u16             pcie_flags_reg; /* cached PCIe Capabilities Register */
+       u8              dma_alias_devfn;/* devfn of DMA alias, if any */
 
        struct pci_driver *driver;      /* which driver has allocated this device */
        u64             dma_mask;       /* Mask of the bits of bus address this