From: Randy Dunlap <randy.dunlap@oracle.com>
To: tanaka <tanaka_hideo@yahoo.co.jp>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Please teach me X86 I/O port 0x61
Date: Thu, 22 Jul 2010 11:21:00 -0700 [thread overview]
Message-ID: <4C488C0C.5080409@oracle.com> (raw)
In-Reply-To: <20100722175727.43642.qmail@web100105.mail.kks.yahoo.co.jp>
On 07/22/10 10:57, tanaka wrote:
> Good evening. Dear all.
>
> I appreciate your responses.
> We use AMD CPU machine.
>
> For example,
> http://www.sun.com/servers/entry/x4100/arch-wp.pdf
>
> In Figure 1-1 block diagram (page 10) ,
> which device is mapped 0x61 address in ?
I can't tell from that block diagram. I tried to see if 0x61 is part of
the AMD-8111 chipset, but it seems that they have removed all downloads
from that web page
(http://www.amd.com/us/products/embedded/chipsets/Pages/other-embedded-chipset-products.aspx,
last 3 links are bad).
I would expect 0x61 to be part of the 8111 or possibly 8132 chipset.
> --- Randy Dunlap <randy.dunlap@oracle.com> wrote:
>
>> On Fri, 16 Jul 2010 00:00:36 +0900 (JST) tanaka wrote:
>>
>>> Dear all.
>>>
>>> I investigate about NMI kernel messages.
>>> Linux kernel read 0x61 address using inb(61h).
>>>
>>> I search a amd opteron cpu following manuals.
>>> but I do not find explanation of 0x61 address.
>>>
>>>
>>
> http://support.amd.com/us/psearch/Pages/psearch.aspx?type=2.1&product=2.1.4&contentType=Tech+Doc+Processor&ostype=&keywords=&items=20
>>>
>>> Could you teach me a 0x61 address of X86 arch >
>>
>> Hi,
>>
>> IO port 0x61 (NMI Status & Control register) is not CPU-specific on
>> x86.
>> It's more of a platform thing.
>>
>> Intel describes it in ICH (chipset) specs, e.g., ICH7 spec,
>> section 10.7.1. Please try that and see if it answers your
>> questions.
>>
>> ---
--
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
prev parent reply other threads:[~2010-07-22 18:21 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-15 15:00 Please teach me X86 I/O port 0x61 tanaka
2010-07-15 16:07 ` Randy Dunlap
2010-07-22 17:57 ` tanaka
2010-07-22 18:21 ` Randy Dunlap [this message]
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