powerpc/pci: Make both ppc32 and ppc64 use sysdata for pci_controller
Currently, ppc32 uses sysdata for the pci_controller pointer, and
ppc64 uses it to hold the device_node pointer. This patch moves the
of_node pointer into (struct pci_bus*)->dev.of_node and
(struct pci_dev*)->dev.of_node so that sysdata can be converted to always
use the pci_controller pointer instead. It also fixes up the
allocating of pci devices so that the of_node pointer gets assigned
consistently and increments the ref count.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/arch/powerpc/include/asm/pci-bridge.h b/arch/powerpc/include/asm/pci-bridge.h
index edeb80f..5e156e0 100644
--- a/arch/powerpc/include/asm/pci-bridge.h
+++ b/arch/powerpc/include/asm/pci-bridge.h
@@ -164,13 +164,13 @@
resource_size_t cfg_addr,
resource_size_t cfg_data, u32 flags);
-#ifndef CONFIG_PPC64
-
static inline struct pci_controller *pci_bus_to_host(const struct pci_bus *bus)
{
return bus->sysdata;
}
+#ifndef CONFIG_PPC64
+
static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus)
{
struct pci_controller *host;
@@ -228,19 +228,10 @@
/* 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.
- */
+ * up (this will only happen once). */
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 (pdn && pdn->devfn == dev->devfn && pdn->busno == dev->bus->number)
- return dn; /* fast path. sysdata is good */
- return fetch_dev_dn(dev);
+ return dev->dev.of_node ? dev->dev.of_node : fetch_dev_dn(dev);
}
static inline int pci_device_from_OF_node(struct device_node *np,
@@ -258,7 +249,7 @@
if (bus->self)
return pci_device_to_OF_node(bus->self);
else
- return bus->sysdata; /* Must be root bus (PHB) */
+ return bus->dev.of_node; /* Must be root bus (PHB) */
}
/** Find the bus corresponding to the indicated device node */
@@ -270,14 +261,6 @@
/** Discover new pci devices under this bus, and add them */
extern void pcibios_add_pci_devices(struct pci_bus *bus);
-static inline struct pci_controller *pci_bus_to_host(const struct pci_bus *bus)
-{
- struct device_node *busdn = bus->sysdata;
-
- BUG_ON(busdn == NULL);
- return PCI_DN(busdn)->phb;
-}
-
extern void isa_bridge_find_early(struct pci_controller *hose);