Messages in this thread | | | Date | Thu, 23 Sep 2004 17:04:38 +0200 | From | Jan Dittmer <> | Subject | Re: Is there a user space pci rescan method? |
| |
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 :) >
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 But grepping the kernel tree doesn't show any mentioning of it - so I suppose it is outdated.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?
Thanks,
Jan
ps: Meanwhile I found dummyphp on the pcihpd mailinglist. This doesn't remove the device from /sys/bus/pci/slots/*/power . Still I'd like to know the offical way. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |