From: Sergei Shtylyov <sshtylyov@ru•mvista.com>
To: Laurent Lagrange <lagrange@fr•oleane.com>
Cc: linuxppc-dev@ozlabs•org
Subject: Re: PCI configuration with multiple PCI controllers
Date: Fri, 01 Feb 2008 17:43:36 +0300 [thread overview]
Message-ID: <47A33018.2090606@ru.mvista.com> (raw)
In-Reply-To: <000001c864df$63b833c0$a501a8c0@GEGE6600V>
Hello.
Laurent Lagrange wrote:
> I have a MPC8641 based board. I try to use the two PCIe controllers. My
> firmware configures (physically) the PCI buses as follow:
> ------------------+
> MPC8641 PCIe 1 | bus 1 +--------------+
> | --------------> | PCI device 0 |
> BUS 0 | +--------------+
> - - - - - - - - - +
> MPC8641 PCIe 2 | bus 3 +--------------+
> | --------------> | PCI device 1 |
> BUS 2 | +--------------+
> ------------------+
> I launch the Linux image (2.6.23.9). During the Kernel PCI configuration,
> buses behind the 2nd MPC8641 PCIe are skipped because its primary bus don't
> start at bus number 0. The kernel reconfigure the primary bus number of the
> MPC8641 PCIe 2 controller from 2 to 0.
Hm...
> I can patch the kernel to work with my firmware but I don't know if my PCI
> configuration is the good one.
> What is the common way to configure the PCI for Linux when a new controller
> is found: start the bus number to 0 or to the last bus number + 1?
The latter. Otherwise it just won't work.
WBR, Sergei
next prev parent reply other threads:[~2008-02-01 15:15 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-01 14:33 PCI configuration with multiple PCI controllers Laurent Lagrange
2008-02-01 14:43 ` Sergei Shtylyov [this message]
-- strict thread matches above, loose matches on Subject: below --
2008-01-30 8:37 Laurent Lagrange
2008-01-29 14:20 Laurent Lagrange
2008-01-30 14:24 ` Kumar Gala
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=47A33018.2090606@ru.mvista.com \
--to=sshtylyov@ru$(echo .)mvista.com \
--cc=lagrange@fr$(echo .)oleane.com \
--cc=linuxppc-dev@ozlabs$(echo .)org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox