From: Tom Duffy <tduffy@sun.com>
To: linux-hotplug@vger.kernel.org
Subject: RE: pci-e hotplug on Intel SE7520HPAF2 board
Date: Tue, 08 Mar 2005 21:45:54 +0000 [thread overview]
Message-ID: <1110318354.20262.39.camel@duffman> (raw)
In-Reply-To: <1110243507.30761.8.camel@duffman>
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On Tue, 2005-03-08 at 12:44 -0800, Sy, Dely L wrote:
> When using acpiphp driver for hot-plug, one has to use attention button
> to initiate power-up of the slot for there is no defined ACPI method
> that
> the acpiphp driver can call to power-up slot. The driver call _PS0 when
>
> the user uses CLI (by echo 1 > /sys/pci/bus/slots/X). However, this
> method is not defined to do the powering-up sequence for PCI hot-plug.
> Maybe a standard method should be defined for such purpose so one can
> use
> CLI to power-up slot.
Would this be implemented in the Linux driver? Or would this need to be
defined in the ACPI hotplug spec?
> Can you check cat /proc/interrupts to see if interrupts occurred when
> you
> do hot-plug using pciehp?
[root@intlhotp-1 ~]# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 20167864 20177040 20177525 20239359 IO-APIC-edge timer
1: 26 2 0 8 IO-APIC-edge i8042
4: 2903 827 59 4992 IO-APIC-edge serial
8: 0 0 0 1 IO-APIC-edge rtc
9: 1 4 3 1 IO-APIC-level acpi
12: 0 28 960 82 IO-APIC-edge i8042
14: 1 362803 362757 35 IO-APIC-edge ide0
169: 0 0 0 0 IO-APIC-level uhci_hcd
177: 14278 2334 91 19521 IO-APIC-level ioc0
185: 0 0 0 30 IO-APIC-level ioc1
193: 198396 0 0 1289 IO-APIC-level eth0
209: 0 0 0 0 IO-APIC-level ehci_hcd
217: 779 1 2 2 IO-APIC-level uhci_hcd, pciehp, pciehp
225: 0 0 0 0 IO-APIC-level uhci_hcd
NMI: 0 0 0 0
LOC: 80766982 80766981 80766980 80766979
ERR: 0
MIS: 0
[root@intlhotp-1 ~]# echo 1 > /sys/bus/pci/slots/4/power
[root@intlhotp-1 ~]# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 20187870 20197047 20191221 20255956 IO-APIC-edge timer
1: 26 2 0 8 IO-APIC-edge i8042
4: 2903 827 59 4992 IO-APIC-edge serial
8: 0 0 0 1 IO-APIC-edge rtc
9: 1 5 5 1 IO-APIC-level acpi
12: 0 28 960 82 IO-APIC-edge i8042
14: 1 363073 363117 35 IO-APIC-edge ide0
169: 0 0 0 0 IO-APIC-level uhci_hcd
177: 14310 2354 91 19524 IO-APIC-level ioc0
185: 0 0 0 30 IO-APIC-level ioc1
193: 198724 0 0 1289 IO-APIC-level eth0
209: 0 0 0 0 IO-APIC-level ehci_hcd
217: 779 4 2 2 IO-APIC-level uhci_hcd, pciehp, pciehp
225: 0 0 0 0 IO-APIC-level uhci_hcd
NMI: 0 0 0 0
LOC: 80837292 80837291 80837290 80837289
ERR: 0
MIS: 0
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prev parent reply other threads:[~2005-03-08 21:45 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-08 0:58 pci-e hotplug on Intel SE7520HPAF2 board Tom Duffy
2005-03-08 6:55 ` Greg KH
2005-03-08 17:09 ` Tom Duffy
2005-03-08 17:33 ` Greg KH
2005-03-08 18:02 ` Tom Duffy
2005-03-08 19:58 ` Rajesh Shah
2005-03-08 20:44 ` Sy, Dely L
2005-03-08 21:45 ` Tom Duffy [this message]
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