[POWERPC] Generic OF platform driver for PCI host bridges.

When enabled in Kconfig, it will pick up any of_platform_device
matching it's match list (currently type "pci", "pcix", "pcie",
or "ht" and setup a PHB for it.

Platform must provide a ppc_md.pci_setup_phb() for it to work
(for doing the necessary initialisations specific to a given PHB
like setting up the config space ops).

It's currently only available on 64 bits as the 32 bits PCI code
can't quite cope with it in it's current form. I will fix that
later.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

2 files changed, 10 insertions, 6 deletions

diff --git a/include/asm-powerpc/machdep.h b/include/asm-powerpc/machdep.h
index ccc29744656e..23580cf5504c 100644
--- a/include/asm-powerpc/machdep.h
+++ b/include/asm-powerpc/machdep.h
@@ -26,6 +26,7 @@ struct device_node;
 struct iommu_table;
 struct rtc_time;
 struct file;
+struct pci_controller;
 #ifdef CONFIG_KEXEC
 struct kimage;
 #endif
@@ -107,6 +108,9 @@ struct machdep_calls {
         int             (*pci_probe_mode)(struct pci_bus *);
         void            (*pci_irq_fixup)(struct pci_dev *dev);
 
+        /* To setup PHBs when using automatic OF platform driver for PCI */
+        int             (*pci_setup_phb)(struct pci_controller *host);
+
         void            (*restart)(char *cmd);
         void            (*power_off)(void);
         void            (*halt)(void);
diff --git a/include/asm-powerpc/ppc-pci.h b/include/asm-powerpc/ppc-pci.h
index 8894d1d4226b..ab6eddb518c7 100644
--- a/include/asm-powerpc/ppc-pci.h
+++ b/include/asm-powerpc/ppc-pci.h
@@ -36,14 +36,14 @@ typedef void *(*traverse_func)(struct device_node *me, void *data);
 void *traverse_pci_devices(struct device_node *start, traverse_func pre,
                 void *data);
 
-void pci_devs_phb_init(void);
-void pci_devs_phb_init_dynamic(struct pci_controller *phb);
-int setup_phb(struct device_node *dev, struct pci_controller *phb);
-void __devinit scan_phb(struct pci_controller *hose);
+extern void pci_devs_phb_init(void);
+extern void pci_devs_phb_init_dynamic(struct pci_controller *phb);
+extern void scan_phb(struct pci_controller *hose);
 
 /* From rtas_pci.h */
-void init_pci_config_tokens (void);
-unsigned long get_phb_buid (struct device_node *);
+extern void init_pci_config_tokens (void);
+extern unsigned long get_phb_buid (struct device_node *);
+extern int rtas_setup_phb(struct pci_controller *phb);
 
 /* From pSeries_pci.h */
 extern void pSeries_final_fixup(void);