Re: Catching NForce2 lockup with NMI watchdog - found?

[Ian Kumlien <pomac@vapor.com>]

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Hi, i'm now running this patch and it survived my grep in /usr/src.

It's mainly a correction of the apic patch and the ACPI halt disconnect
patch that was originally done for 2.6...

I'll get back to you about uptime, but i think this is it... 

Although i would prefer a not so workaroundish approach =)

-- 
Ian Kumlien <pomac () vapor ! com> -- http://pomac.netswarm.net

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--- arch/i386/kernel/mpparse.c.orig	2003-11-28 19:26:19.000000000 +0100
+++ arch/i386/kernel/mpparse.c	2003-12-06 19:35:15.000000000 +0100
@@ -1140,7 +1140,8 @@
 	 */
 	for (i = 0; i < mp_irq_entries; i++) {
 		if ((mp_irqs[i].mpc_dstapic == intsrc.mpc_dstapic) 
-			&& (mp_irqs[i].mpc_srcbusirq == intsrc.mpc_srcbusirq)) {
+			&& (mp_irqs[i].mpc_srcbusirq == intsrc.mpc_srcbusirq)
+			&& (mp_irqs[i].mpc_irqtype == intsrc.mpc_irqtype)) {
 			mp_irqs[i] = intsrc;
 			found = 1;
 			break;
--- arch/i386/kernel/pci-pc.c.orig	2003-12-06 19:32:44.000000000 +0100
+++ arch/i386/kernel/pci-pc.c	2003-12-06 19:33:55.000000000 +0100
@@ -1328,6 +1328,18 @@
 		dev->transparent = 1;
 }
 
+/*
+ * Halt Disconnect and Stop Grant Disconnect (bit 4 at offset 0x6F)
+ * must be disabled when APIC is used (or lockups will happen).
+ */
+static void __devinit pci_fixup_nforce2_disconnect(struct pci_dev *d)
+{
+	u8 t;
+
+	pci_read_config_byte(d, 0x6F, &t);
+	pci_write_config_byte(d, 0x6F, (t & 0xef));
+}
+
 struct pci_fixup pcibios_fixups[] = {
 	{ PCI_FIXUP_HEADER,	PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82451NX,	pci_fixup_i450nx },
 	{ PCI_FIXUP_HEADER,	PCI_VENDOR_ID_INTEL,	PCI_DEVICE_ID_INTEL_82454GX,	pci_fixup_i450gx },
@@ -1343,6 +1355,7 @@
 	{ PCI_FIXUP_HEADER,	PCI_VENDOR_ID_VIA,	PCI_DEVICE_ID_VIA_8367_0,	pci_fixup_via_northbridge_bug },
 	{ PCI_FIXUP_HEADER,	PCI_VENDOR_ID_NCR,	PCI_DEVICE_ID_NCR_53C810,	pci_fixup_ncr53c810 },
 	{ PCI_FIXUP_HEADER,	PCI_VENDOR_ID_INTEL,	PCI_ANY_ID,			pci_fixup_transparent_bridge },
+	{ PCI_FIXUP_HEADER,	PCI_VENDOR_ID_NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE2,	pci_fixup_nforce2_disconnect },
 	{ 0 }
 };
 

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