Re: DMA problem

[claude parisot <Claude.PARISOT@wanadoo.fr>]

Wes Janzen a écrit :
> If those options don't work, you might try dropping down the dma mode by 
> one.  I have a Maxtor drive that does something like that with my 
> Promise PDC20269 when trying to use UDMA 2, but it works fine in UDMA 1.
> 
> -Wes-

I tried it in the bios, all sorts of DMA , but nothing is working ....
> 
> Andreas Unterkircher wrote:
> 
>> Is it possible that your ide-cable can't handle the higher dma speeds
>> and makes errors? is it udma compatible? have you looked for a
>> firmware update for the burner @ www.plextor.com?
>>
>> andreas
>>
>>
>> ----- Original Message ----- From: "claude parisot" 
>> <Claude.PARISOT@wanadoo.fr>
>> To: <linux-kernel@vger.kernel.org>
>> Cc: <Claude.PARISOT@wanadoo.fr>
>> Sent: Friday, January 16, 2004 8:24 PM
>> Subject: DMA problem
>>
>>
>>  
>>
>>>  Hello !
>>>
>>> Sorry to post a seconfd message on the list, I am only trying
>>> to get an answern for this - it seems so - DMA-problem ??
>>>
>>>
>>> I have some
>>> problems with a brand new Plextor-drive, PX-W5224TA/T3B, I cannot
>>> mount any CD or burn a CDR or CD-RW, except if I disable DMA with
>>> following command :# hdparm -d0 /dev/hdd , a little bit annoying,
>>> isn't it ?
>>>
>>> If I insert a cdrom in the drive the led doesn't go out, it flashes
>>> as usual but it stays green.
>>>
>>> It seems to be a DMA-problem or a kernel-bug ???
>>> Its only a supposition, I am a Linux-newbie, and I am looking
>>> for an explanation and a solution ....
>>>
>>> By mounting a cdrom I get following error messages :
>>>
>>> Jan 11 20:46:00 ishwara kernel: scsi : aborting command due to timeout
>>> : pid 102, scsi0, channel 0, id 1, lun 0 0x28 00 00 00 00 10 00 00 01 00
>>> Jan 11 20:46:00 ishwara kernel: hdd: error waiting for DMA
>>> Jan 11 20:46:00 ishwara kernel: hdd: dma timeout retry: status=0x7f {
>>> DriveReady DeviceFault SeekComplete DataRequest CorrectedError Index
>>> Error } Jan 11 20:46:00 ishwara kernel: hdd: dma timeout retry:
>>> error=0x7f Jan 11 20:46:00 ishwara kernel: hdd: DMA disabled
>>> Jan 11 20:46:00 ishwara kernel: hdd: ATAPI reset complete
>>> Jan 11 20:46:00 ishwara kernel: hdd: irq timeout: status=0x80 { Busy }
>>> Jan 11 20:46:00 ishwara kernel: hdd: ATAPI reset complete
>>> Jan 11 20:46:00 ishwara kernel: hdd: irq timeout: status=0x80 { Busy }
>>> Jan 11 20:46:00 ishwara kernel: hdd: ATAPI reset complete
>>> Jan 11 20:46:07 ishwara kernel: hdd: irq timeout: status=0x80 { Busy }
>>> Jan 11 20:46:07 ishwara kernel: scsi0 channel 0 : resetting for second
>>> half of retries. Jan 11 20:46:07 ishwara kernel: SCSI bus is being reset
>>> for host 0 channel 0. Jan 11 20:46:07 ishwara kernel: hdd: status
>>> timeout: status=0x80 { Busy } Jan 11 20:46:07 ishwara kernel: hdd: drive
>>> not ready for command Jan 11 20:46:07 ishwara kernel: hdd: ATAPI reset
>>> complete Jan 11 20:46:32 ishwara kernel: scsi : aborting command due to
>>> timeout : pid 103, scsi0, channel 0, id 1, lun 0 0x28 00 00 00 00 10 00
>>> rive not ready for command
>>>
>>> And then I have a freeze or at least a blocking of the sysem.
>>> I have to reboot.
>>>
>>> Could someone give me an explanation of what is happening and a way to
>>> solve the problem .... is this a kernel-bug ? Or an incompatibility
>>> between the motherboard and the drive ??
>>>
>>> If you choose to help me, please don't be to esoteric, as I already
>>> said, I am a newbie.
>>>
>>> Please, could you Cc all answers to the adress :
>>>
>>> Claude.PARISOT@wanadoo.fr
>>>
>>> My apologizes for my english ....
>>>
>>>
>>> Claude
>>>
>>> System : Pentium 2,8C
>>> Asus P4P800 DeLuxe
>>> Intel I865PE
>>>
>>>