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Problem with via82cxxx and vt8235

DISCUSSION Patrick Petermair 4 participants 7 messages Nov 30, 2002 – Dec 1, 2002

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Patrick Petermair

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#0 lore raw

Hi!

I have a MSI KT3Ultra2 Motherboard with a VT8235 southbridge. I'm currently running kernel 2.4.19 - unfortunately it doesn't detect the southbridge, so I cannot enable dma.
I tried the patch from Vojtech Pavlik (via82cxxx), but then it hangs at boot:

hdc: status timeout: status=0xd0 { Busy }
hdc: status timeout: error=0x00
hdc: drive not ready for command
hdc: ATAPI reset timed-out, status=0x80
hdd: DMA disabled
ide1: reset: success
hdc: status timeout: status=0x80 { Busy }
hdc: status timeout: error=0x01IllegalLengthIndication
hdc: drive not ready for command
hdc: ATAPI reset timed-out, status=0x80
ide1: reset: success
hdc: status timeout: status=0x80 { Busy }
hdc: status timeout: error=0x01IllegalLengthIndication
end_request: I/O error, dev hdc, sector 0
hdc: drive not ready for command

I tried the last 2.5.x kernels and today the 2.4.20, everytime the same problem. 2.4.19 boots just fine, but without dma :-(

Btw: hdc ist my dvd drive:

starbase:/# cat proc/ide/hdc/model
TOSHIBA DVD-ROM SD-M1302
starbase:/#

Any hints? It's a real pain to work without dma....

Thanks,
Patrick

#1 lore raw
Quoted 8 lines · Patrick Petermair

Hi!

I have a MSI KT3Ultra2 Motherboard with a VT8235 southbridge. I'm currently running kernel 2.4.19 - unfortunately it doesn't detect the southbridge, so I cannot enable dma.
I tried the patch from Vojtech Pavlik (via82cxxx), but then it hangs at boot:

Try the -ac tree firstly

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#2 lore raw

Alan Cox:

Quoted 10 lines · Patrick Petermair
Quoted 7 lines

Hi!

I have a MSI KT3Ultra2 Motherboard with a VT8235 southbridge. I'm currently running kernel 2.4.19 - unfortunately it doesn't detect the southbridge, so I cannot enable dma.
I tried the patch from Vojtech Pavlik (via82cxxx), but then it hangs at boot:

Try the -ac tree firstly

Thanks Alan, now dma works perfect!
How come this code isn't in the official 2.4.20 kernel?

The only strange thing now is that uname doesn't know my cpu:

starbase:/# uname -a
Linux starbase 2.4.20-ac1 #1 Sam Nov 30 18:43:15 CET 2002 i686 unknown 
unknown GNU/Linux
starbase:/#

But it gets recognized during boot:

starbase:/# dmesg | grep -i AMD
CPU: AMD Athlon(tm) XP 2200+ stepping 00
starbase:/#
starbase:/# cat /proc/cpuinfo | grep -i AMD
vendor_id       : AuthenticAMD
model name      : AMD Athlon(tm) XP 2200+
starbase:/#

But hey, I can live with that - I have dma now :-) Just curious, what's causing this.

Thanks so much...
Patrick

#3 lore raw

commence Patrick Petermair quotation:

Quoted 11 lines

Alan Cox:

Quoted 2 lines

Try the -ac tree firstly

Thanks Alan, now dma works perfect!
How come this code isn't in the official 2.4.20 kernel?

The only strange thing now is that uname doesn't know my cpu:

starbase:/# uname -a
Linux starbase 2.4.20-ac1 #1 Sam Nov 30 18:43:15 CET 2002 i686 unknown unknown GNU/Linux

Are you running Debian unstable, and did you recently dist-upgrade? The changes to coreutils that display CPU information in place of "unknown unknown" were reverted in coreutils 4.5.3-1.

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 /                          |
[|] Sean Neakums            |  Questions are a burden to others;
[|] <[email protected]>     |      answers a prison for oneself.
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#4 lore raw

Sean Neakums:

Quoted 3 lines

Are you running Debian unstable, and did you recently dist-upgrade? The changes to coreutils that display CPU information in place of "unknown unknown" were reverted in coreutils 4.5.3-1.

Yup, Debian unstable...and yup, did a upgrade last night.

Thanks.
Patrick

#5 lore raw
In reply to Patrick Petermair
Quoted 4 lines · Patrick Petermair
Quoted 1 line

Try the -ac tree firstly

Thanks Alan, now dma works perfect!
How come this code isn't in the official 2.4.20 kernel?

Because its still getting a final polish - with luck it will be in 2.4.21

#6 lore raw

PDC20268 in current -ac [Re: Problem with via82cxxx and vt8235]

Quoted 7 lines
Quoted 4 lines
Quoted 1 line

Try the -ac tree firstly

Thanks Alan, now dma works perfect!
How come this code isn't in the official 2.4.20 kernel?

Because its still getting a final polish - with luck it will be in 2.4.21

I'm still having problems with dma on the secondary channel of my PDC20268. Channel 1 is ok.

# hdparm -Iv /dev/hdg| grep '*u'
        DMA: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4
# hdparm -X68 /dev/hdg

/dev/hdg:
setting xfermode to 68 (UltraDMA mode4)

(no errors logged)

# hdparm -Iv /dev/hdg| grep '*u'
        DMA: mdma0 mdma1 mdma2 udma0 udma1 *udma2 udma3 udma4

There's no such problem w/ 2.4.20 vanilla.

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Tomas Szepe <[email protected]>