PCMCIA card eject does not work?

PCMCIA card eject does not work?

[Albrecht Dre_]

I am currently playing with PCMCIA/Cardbus stuff on several machines. On the
Wallstreet, there is no "manual" way to eject a card (except with a paper clip).
I added a patch by Harald Roelle to the pcmcia package which talks to the pmu to
do this (see http://www.roelle.com/wvlanPPC/data/pcmcia-3.1.17-pmac.patch).
Although the software talks to the PMU (I added a few debug lines to via_pmu.c),
the card is _not_ ejected. Were there any recent changes in the pmu stuff? I use
Ben's latest stable test kernel (2.2.17pre20-ben3). Any ideas how I could track
down the problem?

BTW, do the Lombard and Pismo support automatic ejection of CardBus cards? This
would be _really_ cool...

Thanks in advance, Albrecht.


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Re: PCMCIA card eject does not work?

[T.R. Kobayashi]

> I am currently playing with PCMCIA/Cardbus stuff on several machines. On the
> Wallstreet, there is no "manual" way to eject a card (except with a paper clip).
> I added a patch by Harald Roelle to the pcmcia package which talks to the pmu to
> do this (see http://www.roelle.com/wvlanPPC/data/pcmcia-3.1.17-pmac.patch).
> Although the software talks to the PMU (I added a few debug lines to via_pmu.c),
> the card is _not_ ejected. Were there any recent changes in the pmu stuff? I use
> Ben's latest stable test kernel (2.2.17pre20-ben3). Any ideas how I could track
> down the problem?

Harald Roelle's pcmcia-3.1.17-pmac.patch does not work well on my PB2400c.
I fixed this problem and wrote usb_cb.c for CardBus USB OHCI cards.
These functions may be available, as you use following sources.

http://www.ike-dyn.ritsumei.ac.jp/~tkoba/linuxppc/patches/2.2.18pre4-pb-mol-usb.diff
against Ben's kernel
http://kernel.xorsis.com/source/linux-pmac-benh.tar.gz (Sep. 12 2000)

http://www.ike-dyn.ritsumei.ac.jp/~tkoba/linuxppc/patches/pcmcia-cs-3.1.20-usb-pmac.tar.bz2

==============
T. R. Kobayashi


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Re: PCMCIA card eject does not work?

[Albrecht Dre_]

"T.R. Kobayashi" wrote:
> Harald Roelle's pcmcia-3.1.17-pmac.patch does not work well on my PB2400c.
> I fixed this problem and wrote usb_cb.c for CardBus USB OHCI cards.
> These functions may be available, as you use following sources.
>
> http://www.ike-dyn.ritsumei.ac.jp/~tkoba/linuxppc/patches/2.2.18pre4-pb-mol-usb.diff
> against Ben's kernel
> http://kernel.xorsis.com/source/linux-pmac-benh.tar.gz (Sep. 12 2000)
>
> http://www.ike-dyn.ritsumei.ac.jp/~tkoba/linuxppc/patches/pcmcia-cs-3.1.20-usb-pmac.tar.bz2

Thanks for your links... Your patches do indeed eject a CardBus card on my
Wallstreet. Great! However, I think the mechanics is a little problematic on
this box, as the card sometimes seems to have contact to the connector after the
eject. This leads to an immediate re-recognition of the card, and as the contact
is everything but perfect, I get a panic. Maybe I try to file more than one
eject command to the PMU and see what happens...

Thanks again, Albrecht.


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Re: PCMCIA card eject does not work?

[Benjamin Herrenschmidt]

>Thanks for your links... Your patches do indeed eject a CardBus card on my
>Wallstreet. Great! However, I think the mechanics is a little problematic on
>this box, as the card sometimes seems to have contact to the connector
>after the
>eject. This leads to an immediate re-recognition of the card, and as the
>contact
>is everything but perfect, I get a panic. Maybe I try to file more than one
>eject command to the PMU and see what happens...

Here, 2.4 may help. I think the PCMCIA layer has some de-bouncing
mecanism, and inb/outb should no longer cause a panic when accessing non-
existent HW. For memory-mapped devices, you may still have a problem,
which could be solved by the oops patch (in linuxppc_2_5 but not in _2_3
yet) which would cause the driver to oops rather than panic (well, in
most cases...)

Ben.

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