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-rw-r--r--drivers/pci_auto.c32
1 files changed, 25 insertions, 7 deletions
diff --git a/drivers/pci_auto.c b/drivers/pci_auto.c
index f665ee6fec..295f7c848d 100644
--- a/drivers/pci_auto.c
+++ b/drivers/pci_auto.c
@@ -277,11 +277,15 @@ void pciauto_config_init(struct pci_controller *hose)
}
}
-void pciauto_config_device(struct pci_controller *hose, pci_dev_t dev)
+/* 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;
+ 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);
@@ -290,13 +294,25 @@ void pciauto_config_device(struct pci_controller *hose, pci_dev_t dev)
case PCI_CLASS_BRIDGE_PCI:
pciauto_setup_device(hose, dev, 2, hose->pci_mem, hose->pci_io);
- DEBUGF("PCI Autoconfig: Found P2P bridge, device %d\n", PCI_DEV(dev));
+ DEBUGF("PCI Autoconfig: Found P2P bridge, device %d\n",
+ PCI_DEV(dev));
+
+ /* HJF: Make sure two bridges on the same bus
+ * won't get the same bus number
+ */
+ pciauto_prescan_setup_bridge(hose, dev,
+ max(sub_bus, hose->current_busno));
- pciauto_prescan_setup_bridge(hose, dev, PCI_BUS(dev));
+ n = pci_hose_scan_bus(hose, hose->current_busno+1 /*PCI_BUS(dev)+1*/);
+ sub_bus = max(sub_bus, n);
+ sub_bus = max(sub_bus, hose->current_busno);
- sub_bus = pci_hose_scan_bus(hose, PCI_BUS(dev)+1);
+ DEBUGF("PCI Autoconfig: Got %d from pci_hose_scan_bus\n",
+ sub_bus);
- pciauto_postscan_setup_bridge(hose, dev, sub_bus);
+ pciauto_postscan_setup_bridge(hose, dev,
+ max(sub_bus, hose->current_busno));
+ hose->current_busno++;
break;
case PCI_CLASS_STORAGE_IDE:
@@ -304,7 +320,7 @@ void pciauto_config_device(struct pci_controller *hose, pci_dev_t dev)
if (!(prg_iface & PCIAUTO_IDE_MODE_MASK))
{
DEBUGF("PCI Autoconfig: Skipping legacy mode IDE controller\n");
- return;
+ return sub_bus;
}
pciauto_setup_device(hose, dev, 6, hose->pci_mem, hose->pci_io);
@@ -314,6 +330,8 @@ void pciauto_config_device(struct pci_controller *hose, pci_dev_t dev)
pciauto_setup_device(hose, dev, 6, hose->pci_mem, hose->pci_io);
break;
}
+
+ return sub_bus;
}
#endif /* CONFIG_PCI */
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