[POWERPC] pasemi: Add pasemi_pci_getcfgaddr()

Add pasemi_pci_getcfgaddr(), to get the remapped address of a specific
config register for a PCI device.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/platforms/pasemi/pasemi.h

@@ -6,6 +6,8 @@ extern void pas_pci_init(void);
 extern void __devinit pas_pci_irq_fixup(struct pci_dev *dev);
 extern void __devinit pas_pci_dma_dev_setup(struct pci_dev *dev);
 
+extern void __iomem *pasemi_pci_getcfgaddr(struct pci_dev *dev, int offset);
+
 extern void __init alloc_iobmap_l2(void);
 
 extern void __init pasemi_idle_init(void);

arch/powerpc/platforms/pasemi/pci.c

@@ -175,3 +175,12 @@ void __init pas_pci_init(void)
 	/* Use the common resource allocation mechanism */
 	pci_probe_only = 1;
 }
+
+void __iomem *pasemi_pci_getcfgaddr(struct pci_dev *dev, int offset)
+{
+	struct pci_controller *hose;
+
+	hose = pci_bus_to_host(bus);
+
+	return pa_pxp_cfg_addr(hose, hose->number, dev->devfn, int offset)
+}