Message-ID: <4F95B6F3.3010303@calxeda.com>
Date:	Mon, 23 Apr 2012 15:09:23 -0500
From:	Rob Herring <rob.herring@...xeda.com>
To:	Nikola Ciprich <nikola.ciprich@...uxbox.cz>
CC:	linux-kernel@...r.kernel.org, tcminyard@...il.com
Subject: Re: [BISECTED] ipmi_si not loading since 2.6.39

On 04/21/2012 02:20 AM, Nikola Ciprich wrote:
> Hi,
> 
> here's further information Rob and Corey requested:
> 
> on working system:
> 
> [root@...x4 ~]# cat /proc/ipmi/0/params
> kcs,i/o,0xca2,rsp=1,rsi=1,rsh=0,irq=0,ipmb=0
> 
> dmesg snippet:
> 
> [   41.759319] ipmi message handler version 39.2
> [   41.760690] ipmi device interface
> [   42.765334] IPMI System Interface driver.
> [   42.765336] ipmi_si: probing via hardcoded address
> [   42.765337] ipmi_si: Adding hardcoded-specified kcs state machine
> [   42.765340] ipmi_si: Trying hardcoded-specified kcs state machine at i/o address 0xca8, slave address 0x0, irq 0
> [   42.765344] ipmi_si: Interface detection failed
> [   42.770823] ipmi_si: probing via SMBIOS
> [   42.770834] ipmi_si: SMBIOS: io 0xca2 regsize 1 spacing 1 irq 0
> [   42.770836] ipmi_si: Adding SMBIOS-specified kcs state machine
> [   42.770838] ipmi_si: probing via SPMI
> [   42.770840] ipmi_si: SPMI: io 0xe4 regsize 1 spacing 1 irq 0
> [   42.770841] ipmi_si: Adding SPMI-specified kcs state machine
> [   42.770843] ipmi_si: Trying SMBIOS-specified kcs state machine at i/o address 0xca2, slave address 0x0, irq 0
> [   42.798137] ipmi_si ipmi_si.0: Error clearing flags: cc
> [   42.801011] ipmi_si ipmi_si.0: Found new BMC (man_id: 0x002a7c, prod_id: 0x0624, dev_id: 0x20)
> [   42.801068] ipmi_si ipmi_si.0: IPMI kcs interface initialized
> 
> 
> dmidecode:
> 
> IPMI Device Information
>         Interface Type: KCS (Keyboard Control Style)
>         Specification Version: 2.0
>         I2C Slave Address: 0x00
>         NV Storage Device: Not Present
>         Base Address: 0x0000000000000CA2 (I/O)
>         Register Spacing: Successive Byte Boundaries
> 
> Base Board Information
>         Manufacturer: Supermicro
>         Product Name: X9SCL/X9SCM
> 
> (but we're experiencing this on various supermicro bords, ie X8DTL)
> 
> Tried setting parameters by hand didn't help:
> 
> modprobe ipmi_si type=kcs addrs=0xca8 regspacings=1 regsizes=1 regshifts=0 irqs=0 slave_addrs=0x0
> 
> (not sure whether I got them correct though, and values mostly seem to me to be defaults anyways..)
> 

It is working for me on a SuperMicro system with ubuntu oneiric (3.0
based).

[597160.259728] ipmi_si: probing via SMBIOS
[597160.259730] ipmi_si: SMBIOS: io 0xca2 regsize 1 spacing 1 irq 0
[597160.259731] ipmi_si: Adding SMBIOS-specified kcs state machine
[597160.259734] ipmi_si: probing via SPMI
[597160.259735] ipmi_si: SPMI: io 0xe4 regsize 1 spacing 1 irq 0
[597160.259737] ipmi_si: Adding SPMI-specified kcs state machine
[597160.259739] ipmi_si: Trying SMBIOS-specified kcs state machine at
i/o address 0xca2, slave address 0x0, irq 0
[597160.378757] ipmi_si: Invalid return from get global enables command,
cannot enable the event buffer.
[597160.382032] ipmi_si ipmi_si.0: Found new BMC (man_id: 0x00b980,
prod_id: 0x0624, dev_id: 0x20)
[597160.382040] ipmi_si ipmi_si.0: IPMI kcs interface initialized
[597179.973960] ipmi device interface
localadm@...dy1:~$ ipmitool bmc info
Could not open device at /dev/ipmi0 or /dev/ipmi/0 or /dev/ipmidev/0: No
such file or directory
Get Device ID command failed
localadm@...dy1:~$ sudo ipmitool bmc info
Device ID                 : 32
Device Revision           : 1
Firmware Revision         : 1.1
IPMI Version              : 2.0
Manufacturer ID           : 47488
Manufacturer Name         : Unknown (0xB980)
Product ID                : 1572 (0x0624)
Product Name              : Unknown (0x624)
Device Available          : yes
Provides Device SDRs      : no
Additional Device Support :
    Sensor Device
    SDR Repository Device
    SEL Device
    FRU Inventory Device
    IPMB Event Receiver
    IPMB Event Generator
    Chassis Device
Aux Firmware Rev Info     :
    0x06
    0x00
    0x00
    0x00
localadm@...dy1:~$ uname -a
Linux sandy1 3.0.0-16-generic #28-Ubuntu SMP Fri Jan 27 17:44:39 UTC
2012 x86_64 x86_64 x86_64 GNU/Linux

Rob

> nik
> 
> 
> On Sat, Apr 21, 2012 at 12:38:33AM +0200, Nikola Ciprich wrote:
>> Hello,
>>
>> I was trying to find out why IPMI stopped working on new kernels. Since 2.6.39
>> module loading ends with following message:
>>
>>  ipmi_si: Interface detection failed
>>
>> Then ipmitool is unable to control IPMI device. 
>>
>> Works for 2.6.38, doesn't work for 2.6.39, 3.0.28, 3.4-rc1.
>>
>> I got this bisected to following commit:
>>
>> commit a1e9c9dd3383e6a1a762464ad604b1081774dbda
>> Author: Rob Herring <rob.herring@...xeda.com>
>> Date:   Wed Feb 23 15:37:59 2011 -0600
>>
>>     ipmi: convert OF driver to platform driver
>>     
>>     of_bus is deprecated in favor of the plain platform bus. This patch
>>     merges the ipmi OF driver with the existing platform driver.
>>     
>>     CONFIG_PPC_OF occurrances are removed or replaced with CONFIG_OF.
>>     
>>     Compile tested with and without CONFIG_OF. Tested OF probe and
>>     default probe cases.
>>     
>>     Signed-off-by: Rob Herring <rob.herring@...xeda.com>
>>     Signed-off-by: Grant Likely <grant.likely@...retlab.ca>
>>
>> I wonder whether this is a bug, or I'm doing something wrong?
>>
>> Thanks in advance!
>>
>> with best regards
>>
>> nik
>>
>>
>> -- 
>> -------------------------------------
>> Ing. Nikola CIPRICH
>> LinuxBox.cz, s.r.o.
>> 28. rijna 168, 709 01 Ostrava
>>
>> tel.:   +420 596 603 142
>> fax:    +420 596 621 273
>> mobil:  +420 777 093 799
>>
>> www.linuxbox.cz
>>
>> mobil servis: +420 737 238 656
>> email servis: servis@...uxbox.cz
>> -------------------------------------
> 
> 
> 
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