lkml.org 
[lkml]   [2007]   [Dec]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] x86: provide a DMI based port 0x80 I/O delay override
Alan Cox wrote:
> On Sun, 30 Dec 2007 16:23:20 -0800
> "H. Peter Anvin" <hpa@zytor.com> wrote:
>
>>> continuing to investigate for a cause. It would be nice if it were a
>>> BIOS-fixable problem. It would be even nicer if the BIOS were GPL...
>> If it was an SMM trap, I would expect it to be trapped in the SuperIO chip.
>
> Many SuperIO chips do port 0x80, but they do it over the LPC and they do
> it in hardware to the parallel port data lines. The timings posted for
> 0x80 on his box are really a bit fast for LPC.

Ah, that would eliminate the SuperIO chip.

-hpa


\
 
 \ /
  Last update: 2007-12-31 19:23    [W:1.365 / U:0.300 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site