RE: v2.6.21.4-rt11

[Eric St-Laurent <ericstl34@sympatico.ca>]

On Tue, 2007-12-06 at 06:00 -0700, Pallipadi, Venkatesh wrote:
> 
> >-----Original Message-----

> Yes. Force_hpet part is should have worked..
> Eric: Can you send me the output of 'lspci -n on your system.
> We need to double check we are covering all ICH7 ids.

Here it is:

00:00.0 0600: 8086:2770 (rev 02)
00:02.0 0300: 8086:2772 (rev 02)
00:1b.0 0403: 8086:27d8 (rev 01)
00:1c.0 0604: 8086:27d0 (rev 01)
00:1c.1 0604: 8086:27d2 (rev 01)
00:1d.0 0c03: 8086:27c8 (rev 01)
00:1d.1 0c03: 8086:27c9 (rev 01)
00:1d.2 0c03: 8086:27ca (rev 01)
00:1d.3 0c03: 8086:27cb (rev 01)
00:1d.7 0c03: 8086:27cc (rev 01)
00:1e.0 0604: 8086:244e (rev e1)
00:1f.0 0601: 8086:27b8 (rev 01)
00:1f.1 0101: 8086:27df (rev 01)
00:1f.2 0101: 8086:27c0 (rev 01)
00:1f.3 0c05: 8086:27da (rev 01)
01:0a.0 0604: 3388:0021 (rev 11)
02:0c.0 0c03: 1033:0035 (rev 41)
02:0c.1 0c03: 1033:0035 (rev 41)
02:0c.2 0c03: 1033:00e0 (rev 02)
02:0d.0 0c00: 1106:3044 (rev 46)
03:00.0 0200: 8086:109a

Adding the id for PCI_DEVICE_ID_INTEL_ICH7_0 (27b8) should do the trick.

I've patched my kernel and was ready to test it, but in the meantime I
did a BIOS upgrade (bad idea...) and with the new version the HPET timer
is detected via ACPI.

Unfortunately it seems that downgrading the BIOS is a lot more trouble
than upgrading it. So I cannot easily test the force enable anymore.

Anyway it works now. Here is my patch if it's any use to you:


diff -uprN linux-2.6.21.4.orig/arch/i386/kernel/quirks.c linux-2.6.21.4/arch/i386/kernel/quirks.c
--- linux-2.6.21.4.orig/arch/i386/kernel/quirks.c	Tue Jun 12 10:03:18 2007
+++ linux-2.6.21.4/arch/i386/kernel/quirks.c	Tue Jun 12 10:08:02 2007
@@ -149,6 +149,8 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_I
                          ich_force_enable_hpet);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1,
                          ich_force_enable_hpet);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0,
+                         ich_force_enable_hpet);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1,
                          ich_force_enable_hpet);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31,


Best regards,

- Eric