Date: Thu, 17 Apr 2008 09:14:23 -0400 From: Dan Langille <dan@langille.org> To: Takashi Inoue <takash-i@sophia.ac.jp> Cc: freebsd-mobile@FreeBSD.org Subject: Re: pciconf -w Message-ID: <48074D2F.4050602@langille.org> In-Reply-To: <4806FD1D.9030706@sophia.ac.jp> References: <4805E5A2.1070705@sophia.ac.jp> <200804161037.26572.jhb@freebsd.org> <1208358909.10448.1.camel@RabbitsDen> <20080416.183606.-772296126.imp@bsdimp.com> <4806FD1D.9030706@sophia.ac.jp>
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Takashi Inoue wrote:
> M. Warner Losh wrote:
>
>> In message: <1208358909.10448.1.camel@RabbitsDen>
>> "Alexandre \"Sunny\" Kovalenko" <gaijin.k@gmail.com> writes:
>> : On Wed, 2008-04-16 at 10:37 -0400, John Baldwin wrote:
>> : > On Wednesday 16 April 2008 07:40:18 am Takashi Inoue wrote:
>> : > > Hi friends,
>> : > >
>> : > > Does anyone know how to trun off a pci device using pciconf -w ?
>> : > >
>> : > > Becase my MiniPCI Express wireless card is realy hot,
>> : > > I want to turn off when I don't need it.
>> : > >
>> : > >
>> : > > ath0@pci0:3:0:0: class=0x020000 card=0x058a1014
>> chip=0x1014168c
>> : > > rev=0x01 hdr=0x00
>> : > > vendor = 'Atheros Communications Inc.'
>> : > > device = 'AR5212 Atheros AR5212 802.11abg wireless'
>> : > > class = network
>> : > > subclass = ethernet
>> : > > cap 01[40] = powerspec 2 supports D0 D3 current D0
>> : > > cap 05[50] = MSI supports 1 message
>> : > > cap 10[60] = PCI-Express 1 legacy endpoint
>> : > > cap 11[90] = MSI-X supports 1 message in map 0x10
>> : > : > Bug warner (imp@FreeBSD.org) for his devctl patch and use that
>> to turn it off.
>> : > : Just out of curiosity... would setting
>> hw.pci.do_power_nodriver="3" and
>> : unloading if_ath.ko do the trick?
>>
>> Yes.
>
> No.
>
> none1@pci0:3:0:0: class=0x020000 card=0x058a1014 chip=0x1014168c
> rev=0x01 hdr=0x00
> vendor = 'Atheros Communications Inc.'
> device = 'AR5212 Atheros AR5212 802.11abg wireless'
> class = network
> subclass = ethernet
> cap 01[40] = powerspec 2 supports D0 D3 current D0
> cap 05[50] = MSI supports 1 message
> cap 10[60] = PCI-Express 1 legacy endpoint
> cap 11[90] = MSI-X supports 1 message in map 0x10
>
> As you see, even in case without driver,
> it's power status is D0 and the device is hot.
> Setting hw.....nodriver=3 has no effect.
> I think I need to write D3 by hand.
I have a ThinkPad X61s. Here is what I see when ath0 is up:
ath0@pci0:3:0:0: class=0x020000 card=0x058a1014 chip=0x1014168c
rev=0x01 hdr=0x00
vendor = 'Atheros Communications Inc.'
device = 'AR5212 Atheros AR5212 802.11abg wireless'
class = network
subclass = ethernet
cap 01[40] = powerspec 2 supports D0 D3 current D0
cap 05[50] = MSI supports 1 message
cap 10[60] = PCI-Express 1 legacy endpoint
cap 11[90] = MSI-X supports 1 message in map 0x10
After an ifconfig ath0 down:
ath0@pci0:3:0:0: class=0x020000 card=0x058a1014 chip=0x1014168c
rev=0x01 hdr=0x00
vendor = 'Atheros Communications Inc.'
device = 'AR5212 Atheros AR5212 802.11abg wireless'
class = network
subclass = ethernet
cap 01[40] = powerspec 2 supports D0 D3 current D0
cap 05[50] = MSI supports 1 message
cap 10[60] = PCI-Express 1 legacy endpoint
cap 11[90] = MSI-X supports 1 message in map 0x10
after hw.pci.do_power_nodriver="3"
ath0@pci0:3:0:0: class=0x020000 card=0x058a1014 chip=0x1014168c
rev=0x01 hdr=0x00
vendor = 'Atheros Communications Inc.'
device = 'AR5212 Atheros AR5212 802.11abg wireless'
class = network
subclass = ethernet
cap 01[40] = powerspec 2 supports D0 D3 current D0
cap 05[50] = MSI supports 1 message
cap 10[60] = PCI-Express 1 legacy endpoint
cap 11[90] = MSI-X supports 1 message in map 0x10
As for loaded modules:
[root@laptop ~]# kldstat | grep ath
[root@laptop ~]#
HTH
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