From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: MIME-Version: 1.0 In-Reply-To: <4BAC0D4B.3030507@fulcrummicro.com> References: <4BAC0D4B.3030507@fulcrummicro.com> Date: Wed, 14 Apr 2010 08:55:28 -0500 Message-ID: Subject: Re: Resetting PCI-E devices after linux boot From: Jake Magee To: Dan Wilson Content-Type: multipart/alternative; boundary=001636c5b99c1213c2048432bbc5 Cc: Linuxppc-dev@lists.ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , --001636c5b99c1213c2048432bbc5 Content-Type: text/plain; charset=ISO-8859-1 Dan, Were you able to get PCI-E hotplug working? I could not get this working myself and assumed that driver support was lacking. I'm actually using a PPC405. Thanks, Jake On Thu, Mar 25, 2010 at 8:26 PM, Dan Wilson wrote: > We are building a PCI-E device for use in an embedded system with an 85xx > processor. One of our customers is adamant that linux PCI-E hot-swap > support will not allow us to either bring the device up after linux boot > (i.e., the PCI-E device must be present when linux scans for PCI-E devices > at startup) or to reset the device once linux is up. It was our impression > that the PCI-E hot-swap support should allow for devices to appear after > linux boot, be properly initialized, and then later be able to shut them > down and bring them back up again. > > Has anyone successfully used the PCI-E hot-swap capabilities in the linux > kernel in a PPC 85xx environment? Any known gotchas we need to be aware of? > > Thanks in advance for your responses, > > Dan. > > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@lists.ozlabs.org > https://lists.ozlabs.org/listinfo/linuxppc-dev > --001636c5b99c1213c2048432bbc5 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Dan,

Were you able to get PCI-E hotplug working?=A0 I could not get= this working myself and assumed that driver support was lacking.=A0 I'= m actually using a PPC405.

Thanks,
Jake


On Thu, Mar 25, 2010 at 8:26 PM, Dan Wil= son <dwils= on@fulcrummicro.com> wrote:
We are building a PCI-E device for use in an embedded system with an 85xx p= rocessor. =A0One of our customers is adamant that linux PCI-E hot-swap supp= ort will not allow us to either bring the device up after linux boot (i.e.,= the PCI-E device must be present when linux scans for PCI-E devices at sta= rtup) or to reset the device once linux is up. =A0It was our impression tha= t the PCI-E hot-swap support should allow for devices to appear after linux= boot, be properly initialized, and then later be able to shut them down an= d bring them back up again.

Has anyone successfully used the PCI-E hot-swap capabilities in the linux k= ernel in a PPC 85xx environment? =A0Any known gotchas we need to be aware o= f?

Thanks in advance for your responses,

Dan.

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