powerpc/85xx: Add host-pci(e) bridge only for RC
FSL PCIe controller can act as agent(EP) or host(RC). Under Agent(EP) mode
the controller will be configured by the host system. So its not required
to be registered with the PCI(e) sub-system. We only register the
controller if its configured in host(RC) mode.
Signed-off-by: Vivek Mahajan <vivek.mahajan@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
index b4d6046d..80b8b7a 100644
--- a/arch/powerpc/sysdev/fsl_pci.c
+++ b/arch/powerpc/sysdev/fsl_pci.c
@@ -330,6 +330,7 @@
struct pci_controller *hose;
struct resource rsrc;
const int *bus_range;
+ u8 progif;
if (!of_device_is_available(dev)) {
pr_warning("%s: disabled\n", dev->full_name);
@@ -360,6 +361,18 @@
setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4,
PPC_INDIRECT_TYPE_BIG_ENDIAN);
+
+ early_read_config_byte(hose, 0, 0, PCI_CLASS_PROG, &progif);
+ if ((progif & 1) == 1) {
+ /* unmap cfg_data & cfg_addr separately if not on same page */
+ if (((unsigned long)hose->cfg_data & PAGE_MASK) !=
+ ((unsigned long)hose->cfg_addr & PAGE_MASK))
+ iounmap(hose->cfg_data);
+ iounmap(hose->cfg_addr);
+ pcibios_free_controller(hose);
+ return 0;
+ }
+
setup_pci_cmd(hose);
/* check PCI express link status */