[Etherboot-developers] pci.c patch

[Ken Y. <ke...@bi...>]

Finally I got around to looking at Steve Smith's patch for PCI-PCI
bridges. Here's the patch. Could people who are having problems with
NICs not on PCI bus 0 please try this to see if it helps?

--- etherboot-5.0.1/src/pci.c	Mon Apr  2 19:00:04 2001
+++ etherboot-5.0.2/src/pci.c	Wed May 16 02:19:17 2001
@@ -385,7 +385,16 @@
 			pcibios_read_config_byte(bus, devfn, PCI_CLASS_CODE, &class);
 			pcibios_read_config_byte(bus, devfn, PCI_SUBCLASS_CODE, &subclass);
 			if (class == 0x06 && subclass == 0x04)
+			{
 				buses++;
+				/* Some BIOS's seem to configure the bridge with a gap in PCI bus numbers */
+				if (hdr_type == 0x01) /* PCI-PCI Bridge 1.1 */
+				{
+					pcibios_read_config_dword(bus, devfn, PCI_BASE_ADDRESS_2, &ioaddr);
+					if (((ioaddr>>16) & 0xff) > buses)
+						buses = (ioaddr>>16) & 0xff;
+				}
+			}
 
 #if	DEBUG
 			printf("bus %x, function %x, vendor %x, device %x\n",