From: Jeff Garzik <jgarzik@pobox.com>
To: Roland Dreier <roland@topspin.com>
Cc: tom.l.nguyen@intel.com, linux-kernel@vger.kernel.org,
Greg KH <greg@kroah.com>
Subject: Re: Question on using MSI in PCI driver
Date: Mon, 21 Jun 2004 23:50:51 -0400 [thread overview]
Message-ID: <40D7AC9B.5040409@pobox.com> (raw)
In-Reply-To: <52lligqqlc.fsf@topspin.com>
Roland Dreier wrote:
> I'm looking at implementing MSI/MSI-X support in a PCI device driver
> I'm working on. However, I've run into an issue with the MSI API that
> I would like some clarification on.
>
> When I call pci_enable_msi, since my device is MSI-X capable, the
> kernel calls msix_capability_init, which works out the memory region
> where vectors should be written and then calls request_region. (In
> fact it calls
Not answering your question directly, but...
You are breaking new ground by adding MSI support to a driver. I thank
you for this -- alot -- but you should realize there will probably be a
little bit of PCI core work necessary in order to get things the way you
want them.
Feel free to propose changes to the PCI core to accomodate your MSI driver.
Jeff
next prev parent reply other threads:[~2004-06-22 3:51 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-22 2:22 Question on using MSI in PCI driver Roland Dreier
2004-06-22 3:50 ` Jeff Garzik [this message]
2004-06-22 3:54 ` Roland Dreier
2004-06-22 4:01 ` Jeff Garzik
2004-06-22 4:04 ` Roland Dreier
2004-06-22 4:03 ` [PATCH] Export msi_remove_pci_irq_vectors Roland Dreier
2004-06-22 4:35 ` [PATCH] Fix MSI-X setup Roland Dreier
2004-06-22 23:23 ` Greg KH
2004-06-22 23:57 ` Roland Dreier
2004-06-23 0:04 ` Greg KH
2004-06-22 8:45 ` [PATCH] Export msi_remove_pci_irq_vectors Christoph Hellwig
-- strict thread matches above, loose matches on Subject: below --
2004-06-22 15:24 Question on using MSI in PCI driver Nguyen, Tom L
2004-06-22 17:49 ` Roland Dreier
2004-06-22 18:08 Nguyen, Tom L
2004-06-22 18:26 ` Roland Dreier
2004-06-22 19:51 ` Christoph Hellwig
2004-06-22 19:55 ` Roland Dreier
2004-06-22 18:43 Nguyen, Tom L
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=40D7AC9B.5040409@pobox.com \
--to=jgarzik@pobox.com \
--cc=greg@kroah.com \
--cc=linux-kernel@vger.kernel.org \
--cc=roland@topspin.com \
--cc=tom.l.nguyen@intel.com \
/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