Hello,
Peter F. Patel-Schneider wrote:
From: Tejun Heo [EMAIL PROTECTED]
Subject: Re: 2.6.23-rc9-git4: pata_pcmcia, disabling IRQ #9 and Re: libata
and legacy ide pcmcia failure
Date: Wed, 26 Mar 2008 23:44:39 +0900
[Problems with PCMCIA adapter and CF card on ThinkPad T60p.]
Does
Albert Lee wrote:
Mark Lord wrote:
...
Mmm.. I don't know about the first failure there,
but after that it gets into the stuck DRQ state
which libata makes no attempt to handle at present.
It seems the pata_pcmcia driver is using IRQ driven PIO. Maybe Robert
could try the
Robert de Rooy wrote:
Albert Lee wrote:
Mark Lord wrote:
...
Mmm.. I don't know about the first failure there,
but after that it gets into the stuck DRQ state
which libata makes no attempt to handle at present.
It seems the pata_pcmcia driver is using IRQ driven PIO. Maybe
Tejun Heo wrote:
Albert Lee wrote:
libata can do most of this too by using ATA_FLAG_PIO_POLLING (doesn't
cover nodata commands tho).
Hi Tejun,
Polling of nodata commands was fixed in:
http://marc.info/?l=linux-idem=116546272916399w=2
Right. Thanks for reminding me.
Robert de Rooy wrote:
I did another try with libata pcmcia support using 2.6.22-rc5 which
already includes the nodata polling fix, in combination with
disable-dev_init_param-and-setxfermode-for-CFA.patch and the
timing-debug.patch
...
Jun 22 13:19:44 localhost kernel: ata3.00: issuing
Robert de Rooy wrote:
(after applying the ide-polling experimental patch)
With this I can declare success!! I was able to read and write to the
card without any problems, although I did not try to stress it.
Jun 12 00:19:42 localhost kernel: pccard: PCMCIA card inserted into slot 0
Jun 12
On Sun, Jun 10, 2007 at 11:50:52PM +0200, Robert de Rooy wrote:
Mark Lord wrote:
Well, at this point, I think the only way to make progress is for one of
the IDE/libata gurus to actually get hold of the same card you have,
meaning Alan Cox (best choice), or myself, or Bart. Or maybe
Tejun Heo wrote:
Jun 7 21:10:29 localhost kernel: ata3.00: CFA: Memory Card Adapter,
20011212, max PIO1
Jun 7 21:10:29 localhost kernel: ata3.00: 253696 sectors, multi 0: LBA
Jun 7 21:10:29 localhost kernel: ata3.00: issuing IDENTIFY
Jun 7 21:10:29 localhost kernel: ata3.00: IDENTIFY
Mark Lord wrote:
I still don't see much evidence that interrupts are actually
functioning here.
It would be good to see /proc/interrupts before/after libata tries to
talk to it.
Let's assume for the moment that interrupts are b0rken.
The legacy IDE driver can talk to such devices
Tejun Heo wrote:
Can you test the attached patch
Here is what I get on the T41 (TI Cardbus controller) with 2.6.22-rc4 +
timing-debug.patch +
disable-dev_init_param-and-setxfermode-for-CFA.patch +
libata-dont-test-slave-register-readiness-after-srst.patch
Jun 7 21:10:28 localhost kernel:
http://thread.gmane.org/gmane.linux.kernel/530099
It seems we're losing interrupts from the CFA device. Any ideas?
Alan probably knows more, but ISTR some CFA PCMCIA devices that needed
polling...
Not that I know of. Not devices anyway - there are embedded boxes with no
IRQ
Alan Cox wrote:
http://thread.gmane.org/gmane.linux.kernel/530099
It seems we're losing interrupts from the CFA device. Any ideas?
Alan probably knows more, but ISTR some CFA PCMCIA devices that needed
polling...
Not that I know of. Not devices anyway - there are embedded
Robert de Rooy wrote:
Hmm, good question. I do not have any other PCMCIA device to test.
The only other device I have is a Cardbus Wi-Fi adapter without Linux
support (Marvell). If I insert that adapter lspci seems to list it
properly, but without resorting to ndiswrapper I have no way of
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