From: Rolf Eike Beer <eike-kernel@sf-tec.de>
To: Jan Dittmer <jdittmer@ppp0.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Is there a user space pci rescan method?
Date: Thu, 23 Sep 2004 18:49:11 +0200 [thread overview]
Message-ID: <200409231849.11597@bilbo.math.uni-mannheim.de> (raw)
In-Reply-To: <4152E606.3070609@ppp0.net>
Jan Dittmer wrote:
> Greg KH wrote:
> > On Thu, Sep 23, 2004 at 01:58:32AM +0200, Jan Dittmer wrote:
> >>Dave Aubin wrote:
> >>>Hi,
> >>>
> >>> I know very little about hotplug, but does make sense.
> >>>How do you motivate a hotplug insertion event? Or should
> >>>I just go read the /docs on hotplugging? Any help is
> >>>Appreciated:)
> >>
> >>There is a "fake" hotplug driver which works for normal pci. But last
> >>time I looked at it, it did only support hot disabling, not hot enabling
> >>- but this surely can be fixed.
> >
> > Yes, hot "enabling" has been left for someone to add to the driver, if
> > you read the comments in it :)
Hot enabling works for month in dummyphp...
> I read them and started playing around with this driver. So echoing 0 in
> /sys/bus/pci/slots/*/power disables the pci device. The problem I see
> is, that the tree with the device is disappearing. So how am I supposed
> to re-enable the device. I've no real hotplug hardware to play with, so
> I'm bound to reading the source code in drivers/pci/hotplug and testing
> with fakephp. I found your utility pcihpview (v0.5) which searches for
> /sys/bus/pci/hotplug_slots. But grepping the kernel tree doesn't show
> any mentioning of it - so I suppose it is outdated.
> Is there anywhere a current article (or Documentation/pci_hotplug.txt)
> about the state of PCI hotplug and how this is supposed to work?
Just search the archive of pcihpd-discuss@lists.sourceforge.net for dummyphp,
this is the version that works. I'll rediff it soon and hope Greg will accept
it this time.
Message-Id to search for: <200403120947.13046@bilbo.math.uni-mannheim.de>
Eike
next prev parent reply other threads:[~2004-09-23 16:45 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-22 22:00 Is there a user space pci rescan method? Dave Aubin
2004-09-22 23:58 ` Jan Dittmer
2004-09-23 0:26 ` Greg KH
2004-09-23 15:04 ` Jan Dittmer
2004-09-23 16:49 ` Rolf Eike Beer [this message]
2004-09-23 16:53 ` Jan Dittmer
2004-09-23 17:05 ` Rolf Eike Beer
2004-09-24 10:41 ` Rolf Eike Beer
2004-09-24 11:42 ` Jan Dittmer
2004-09-24 12:12 ` Rolf Eike Beer
2004-09-24 12:16 ` Jan Dittmer
2004-09-24 12:32 ` Rolf Eike Beer
2004-09-24 14:55 ` Greg KH
2004-09-27 9:14 ` Rolf Eike Beer
2004-10-10 0:13 ` Jan Dittmer
2004-10-10 0:59 ` Jan Dittmer
2004-10-10 13:45 ` Jan Dittmer
2004-10-30 4:16 ` Greg KH
2004-10-31 23:59 ` [patch 1/2] fakephp: introduce pci_bus_add_device Jan Dittmer
2004-11-01 9:35 ` Christoph Hellwig
2004-11-02 22:51 ` Jan Dittmer
2004-11-11 23:47 ` Greg KH
2004-11-12 0:13 ` Jan Dittmer
2004-11-12 18:59 ` Greg KH
2004-10-31 23:59 ` [patch 2/2] fakephp: add pci bus rescan ability Jan Dittmer
2004-11-12 18:59 ` Greg KH
2004-09-24 13:09 ` [Pcihpd-discuss] Re: Is there a user space pci rescan method? Matthew Wilcox
2004-09-24 13:18 ` Rolf Eike Beer
2004-09-24 12:40 ` Jan Dittmer
2004-09-24 12:59 ` Rolf Eike Beer
2004-09-23 23:31 ` Greg KH
-- strict thread matches above, loose matches on Subject: below --
2004-09-22 21:58 Dave Aubin
2004-09-22 20:30 Dave Aubin
2004-09-22 20:04 ` Alan Cox
2004-09-22 20:42 ` Richard B. Johnson
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