From: Rene Herman <rene.herman@keyaccess.nl>
To: Rajat Jain <Rajat.Jain@infogain.com>
Cc: linux-newbie@vger.kernel.org, kernelnewbies@nl.linux.org
Subject: Re: Who decides PCI device number?
Date: Wed, 06 Aug 2008 19:49:13 +0200 [thread overview]
Message-ID: <4899E419.80507@keyaccess.nl> (raw)
In-Reply-To: <C86899CCB10A6C4E93D5978DCB232D4B09002FD5@GDCMX01.igglobal.com>
On 06-08-08 07:54, Rajat Jain wrote:
> In the PCI addess (domain + PCI bus num + PCI Device num + function num)
> of a PCI device, who decides the PCI device number assigned to a PCI
> device?
>
> - Is it hard wired for a particular PCI slot? (So that any PCI card
> plugged into this slot will always have a particular PCI device number).
Yes, for a definition of "hard-wired" which if I'm not mistaken (which I
might be, but believe I remember reading that once) includes the
possibility for busses to change numbering depending on bridge detection
order.
But yes, the "dd" in the DDDD:bb:dd.f lspci -D output indeed signifies
the slot, not the card -- exchange two PCI cards in your system and see
them change numbering around as well.
> -Or is it hardwired on the PCI card? (So that this card if plugged on
> any slot in any machine will have the same PCI device number)?
No.
Rene.
--
To unsubscribe from this list: send the line "unsubscribe linux-newbie" 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.linux-learn.org/faqs
prev parent reply other threads:[~2008-08-06 17:49 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-06 5:54 Who decides PCI device number? Rajat Jain
2008-08-06 17:49 ` Rene Herman [this message]
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=4899E419.80507@keyaccess.nl \
--to=rene.herman@keyaccess.nl \
--cc=Rajat.Jain@infogain.com \
--cc=kernelnewbies@nl.linux.org \
--cc=linux-newbie@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
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