static void config_pci_bridge(struct pci_controller *hose, pci_dev_t dev,
struct pci_config_table *table)
{
u8 secondary;
hose->read_byte(hose, dev, PCI_SECONDARY_BUS, &secondary);
hose->last_busno = max(hose->last_busno, secondary);
pci_hose_scan_bus(hose, secondary);
}
/* HJF: Changed this to return int. I think this is required
* to get the correct result when scanning bridges
*/
int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev)
{
unsigned int sub_bus = PCI_BUS(dev);
unsigned short class;
unsigned char prg_iface;
int n;
pci_hose_read_config_word(hose, dev, PCI_CLASS_DEVICE, &class);
switch(class) {
case PCI_CLASS_BRIDGE_PCI:
hose->current_busno++;
pciauto_setup_device(hose, dev, 2, hose->pci_mem, hose->pci_io);
DEBUGF("PCI Autoconfig: Found P2P bridge, device %d\n", PCI_DEV(dev));
/* Passing in current_busno allows for sibling P2P bridges */
pciauto_prescan_setup_bridge(hose, dev, hose->current_busno);
/*
* need to figure out if this is a subordinate bridge on the bus
* to be able to properly set the pri/sec/sub bridge registers.
*/
n = pci_hose_scan_bus(hose, hose->current_busno);
/* figure out the deepest we've gone for this leg */
sub_bus = max(n, sub_bus);
pciauto_postscan_setup_bridge(hose, dev, sub_bus);
sub_bus = hose->current_busno;
break;
case PCI_CLASS_STORAGE_IDE:
pci_hose_read_config_byte(hose, dev, PCI_CLASS_PROG, &prg_iface);
if (!(prg_iface & PCIAUTO_IDE_MODE_MASK)) {
DEBUGF("PCI Autoconfig: Skipping legacy mode IDE controller\n");
return sub_bus;
}
pciauto_setup_device(hose, dev, 6, hose->pci_mem, hose->pci_io);
break;
case PCI_CLASS_BRIDGE_CARDBUS:
/* just do a minimal setup of the bridge, let the OS take care of the rest */
pciauto_setup_device(hose, dev, 0, hose->pci_mem, hose->pci_io);
DEBUGF("PCI Autoconfig: Found P2CardBus bridge, device %d\n", PCI_DEV(dev));
hose->current_busno++;
break;
#ifdef CONFIG_MPC5200
case PCI_CLASS_BRIDGE_OTHER:
DEBUGF("PCI Autoconfig: Skipping bridge device %d\n",
PCI_DEV(dev));
break;
#endif
default:
pciauto_setup_device(hose, dev, 6, hose->pci_mem, hose->pci_io);
break;
}
return sub_bus;
}
