Date: Wed, 10 Apr 2002 14:44:36 -0400 (EDT) From: Colin Perkins <csp@isi.edu> To: FreeBSD-gnats-submit@FreeBSD.org Subject: i386/36972: ICH3 SMbus controller not correctly detected Message-ID: <200204101844.g3AIiaab000371@purple.nge.isi.edu>
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>Number: 36972
>Category: i386
>Synopsis: ICH3 SMbus controller not correctly detected
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Apr 10 11:50:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: Colin Perkins
>Release: FreeBSD 4.5-STABLE i386
>Organization:
USC/ISI
>Environment:
System: FreeBSD purple.nge.isi.edu 4.5-STABLE FreeBSD 4.5-STABLE #9: Wed Apr 10 14:28:42 EDT 2002 root@purple.nge.isi.edu:/usr/src/sys/compile/PURPLE i386
>Description:
Intel ICH3 SMbus controller is not detected when booting (tested on
ThinkPad X22, but doubt that the problem is specific to that host).
Patch enclosed.
>How-To-Repeat:
Reboot. Dmesg will show:
ichsmb0: <SMBus controller> port 0x1880-0x189f irq 5 at device 31.3 on pci0
with enclosed patch, it shows:
ichsmb0: <Intel 82801CA (ICH3) SMBus controller> port 0x1880-0x189f irq 5 at device 31.3 on pci0
smbus0: <System Management Bus> on ichsmb0
smb0: <SMBus general purpose I/O> on smbus0
instead (detecting the smbus0 and smb0 devices correctly).
>Fix:
Patch to /usr/src/sys/dev/ichsmb/ichsmb_pci.c as shown below.
*** ichsmb_pci.c.orig Wed Apr 10 14:06:57 2002
--- ichsmb_pci.c Wed Apr 10 14:27:14 2002
***************
*** 67,72 ****
--- 67,73 ----
#define ID_81801AA 0x24138086
#define ID_81801AB 0x24238086
#define ID_82801BA 0x24438086
+ #define ID_82801CA 0x24838086
#define PCIS_SERIALBUS_SMBUS_PROGIF 0x00
***************
*** 121,126 ****
--- 122,130 ----
break;
case ID_82801BA:
device_set_desc(dev, "Intel 82801BA (ICH2) SMBus controller");
+ break;
+ case ID_82801CA:
+ device_set_desc(dev, "Intel 82801CA (ICH3) SMBus controller");
break;
default:
if (pci_get_class(dev) == PCIC_SERIALBUS
>Release-Note:
>Audit-Trail:
>Unformatted:
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