Merge ../torvalds-2.6/

[pandora-kernel.git] / include / asm-ppc64 / pci-bridge.h

diff --git a/include/asm-ppc64/pci-bridge.h b/include/asm-ppc64/pci-bridge.h
index c4f9023..d899138 100644 (file)
--- a/include/asm-ppc64/pci-bridge.h
+++ b/include/asm-ppc64/pci-bridge.h
@@ -48,19 +48,52 @@ struct pci_controller {
        unsigned long dma_window_size;
 };
 
+/*
+ * PCI stuff, for nodes representing PCI devices, pointed to
+ * by device_node->data.
+ */
+struct pci_controller;
+struct iommu_table;
+
+struct pci_dn {
+       int     busno;                  /* for pci devices */
+       int     bussubno;               /* for pci devices */
+       int     devfn;                  /* for pci devices */
+       int     eeh_mode;               /* See eeh.h for possible EEH_MODEs */
+       int     eeh_config_addr;
+       int     eeh_capable;            /* from firmware */
+       int     eeh_check_count;        /* # times driver ignored error */
+       int     eeh_freeze_count;       /* # times this device froze up. */
+       int     eeh_is_bridge;          /* device is pci-to-pci bridge */
+
+       int     pci_ext_config_space;   /* for pci devices */
+       struct  pci_controller *phb;    /* for pci devices */
+       struct  iommu_table *iommu_table;       /* for phb's or bridges */
+       struct  pci_dev *pcidev;        /* back-pointer to the pci device */
+       struct  device_node *node;      /* back-pointer to the device_node */
+       u32     config_space[16];       /* saved PCI config space */
+};
+
+/* Get the pointer to a device_node's pci_dn */
+#define PCI_DN(dn)     ((struct pci_dn *) (dn)->data)
+
 struct device_node *fetch_dev_dn(struct pci_dev *dev);
 
-/* Get a device_node from a pci_dev.  This code must be fast except in the case
- * where the sysdata is incorrect and needs to be fixed up (hopefully just once)
+/* Get a device_node from a pci_dev.  This code must be fast except
+ * in the case where the sysdata is incorrect and needs to be fixed
+ * up (this will only happen once).
+ * In this case the sysdata will have been inherited from a PCI host
+ * bridge or a PCI-PCI bridge further up the tree, so it will point
+ * to a valid struct pci_dn, just not the one we want.
  */
 static inline struct device_node *pci_device_to_OF_node(struct pci_dev *dev)
 {
        struct device_node *dn = dev->sysdata;
+       struct pci_dn *pdn = dn->data;
 
-       if (dn->devfn == dev->devfn && dn->busno == dev->bus->number)
+       if (pdn && pdn->devfn == dev->devfn && pdn->busno == dev->bus->number)
                return dn;      /* fast path.  sysdata is good */
-       else
-               return fetch_dev_dn(dev);
+       return fetch_dev_dn(dev);
 }
 
 static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus)
@@ -83,8 +116,13 @@ static inline struct pci_controller *pci_bus_to_host(struct pci_bus *bus)
        struct device_node *busdn = bus->sysdata;
 
        BUG_ON(busdn == NULL);
-       return busdn->phb;
+       return PCI_DN(busdn)->phb;
 }
 
+/* Return values for ppc_md.pci_probe_mode function */
+#define PCI_PROBE_NONE         -1      /* Don't look at this bus at all */
+#define PCI_PROBE_NORMAL       0       /* Do normal PCI probing */
+#define PCI_PROBE_DEVTREE      1       /* Instantiate from device tree */
+
 #endif
 #endif /* __KERNEL__ */