Merge branch 'remotes/lorenzo/pci/hyper-v'

[platform/kernel/linux-rpi.git] / include / linux / pci.h

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 0e29a36..3edbd75 100644 (file)
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -529,6 +529,16 @@ static inline int pci_channel_offline(struct pci_dev *pdev)
        return (pdev->error_state != pci_channel_io_normal);
 }
 
+/*
+ * Currently in ACPI spec, for each PCI host bridge, PCI Segment
+ * Group number is limited to a 16-bit value, therefore (int)-1 is
+ * not a valid PCI domain number, and can be used as a sentinel
+ * value indicating ->domain_nr is not set by the driver (and
+ * CONFIG_PCI_DOMAINS_GENERIC=y archs will set it with
+ * pci_bus_find_domain_nr()).
+ */
+#define PCI_DOMAIN_NR_NOT_SET (-1)
+
 struct pci_host_bridge {
        struct device   dev;
        struct pci_bus  *bus;           /* Root bus */
@@ -536,6 +546,7 @@ struct pci_host_bridge {
        struct pci_ops  *child_ops;
        void            *sysdata;
        int             busnr;
+       int             domain_nr;
        struct list_head windows;       /* resource_entry */
        struct list_head dma_ranges;    /* dma ranges resource list */
        u8 (*swizzle_irq)(struct pci_dev *, u8 *); /* Platform IRQ swizzler */