[PATCH] yenta: add modparam to tune EnE bridges (was Re: ENE CB1410 and Echo Indigo IO incompatibility)

[Jon Stutters]

Daniel Ritz wrote:
> On Sunday 21 August 2005 21.10, Jon Stutters wrote:
> 
>>If I read the source you attached to the previous message correctly then 
>>you're still only dealing with the TLTEnable bit.  The setting I had to 
>>adjust to fix the echo audio card was prefetch which is controlled by 
>>bit C8.
>>
> 
> <start quoting>
> The prefetch function can be disabled under Linux by changing C8h to 
> 0200h in the cardbus chipset
> </end quoting>
> 
> by reading this i was thinking its only about that bit because you have
> the TLTEnable bit set, but the code clears it by default...
> 
> i now found some crappy doc from ene. reading it it's probably bit 2/3 at c9h
> to control prefetch. btw. don't change anything in c8, only change c9, 8bit.
> 
> could you give me the content of that register before you change it, please.
> ( hexdump /proc/bus/pci/02/04.0 )
> but anyway, try the attached updated auto-tuning patch.

Output of hexdump before making any changes is below.  The output 
doesn't change after I use my setpci fix.

jstutters at nevis> hexdump /proc/bus/pci/02/04.0
0000000 1524 1410 0007 0210 0001 0607 a810 0002
0000010 0000 9010 00a0 0200 0302 b006 0000 2040
0000020 f000 207f 0000 2080 f000 20bf 5000 0000
0000030 50fc 0000 5400 0000 54fc 0000 0105 0500
0000040 0e11 0860 0001 0000 0000 0000 0000 0000
0000050 0000 0000 0000 0000 0000 0000 0000 0000
*
0000080

Which kernel source are you developing patches again?  The most recent
patch you sent didn't apply cleanly to vanilla 2.6.12.5.

Cheers,
Jon Stutters