[Qemu-devel] [PATCH] Change the 82371SB PCI-to-ISA bridge into a 82371EB

[Aurelien Jarno]

This patch changes the 82371SB PCI-to-ISA bridge into a 82371EB. There
are no differences in the implementation, but the Malta platform needs 
this device as there are some PCI fixup in the Linux kernel. 

This should be supported without problem by the i386 and x86_64 targets
as there is no standard PC hardware. Note that the ACPI controller 
implemented in QEMU is already a 82371EB.

diff -Nurd qemu/hw/piix_pci.c qemu/hw/piix_pci.c
--- qemu/hw/piix_pci.c  2006-12-26 16:01:05.000000000 +0100
+++ qemu/hw/piix_pci.c  2006-12-26 16:37:25.000000000 +0100
@@ -287,8 +287,8 @@
 
     pci_conf[0x00] = 0x86; // Intel
     pci_conf[0x01] = 0x80;
-    pci_conf[0x02] = 0x00; // 82371SB PIIX3 PCI-to-ISA bridge (Step A1)
-    pci_conf[0x03] = 0x70;
+    pci_conf[0x02] = 0x10; // 82371AB/EB/MB PIIX4 PCI-to-ISA bridge
+    pci_conf[0x03] = 0x71;
     pci_conf[0x0a] = 0x01; // class_sub = PCI_ISA
     pci_conf[0x0b] = 0x06; // class_base = PCI_bridge
     pci_conf[0x0e] = 0x80; // header_type = PCI_multifunction, generic

-- 
  .''`.  Aurelien Jarno             | GPG: 1024D/F1BCDB73
 : :' :  Debian developer           | Electrical Engineer
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