From: Arnd Bergmann <arnd@arndb.de>
To: Ira Snyder <iws@ovro.caltech.edu>
Cc: Rusty Russell <rusty@rustcorp.com.au>,
David Miller <davem@davemloft.net>,
linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org,
shemminger@vyatta.com, netdev@vger.kernel.org
Subject: Re: [PATCH RFC v5] net: add PCINet driver
Date: Thu, 15 Jan 2009 13:58:33 +0100 [thread overview]
Message-ID: <200901151358.34250.arnd@arndb.de> (raw)
In-Reply-To: <20090115001251.GA10745@ovro.caltech.edu>
On Thursday 15 January 2009, Ira Snyder wrote:
> The only problem with that is that you cannot route interrupts from the
> DMA controller over PCI with the PowerPC core running. Which makes it
> mostly useless for this case.
If the host supports MSI, you can simply program the DMA controller to
write the correct message to the inbound address of the MSI interrupt
controller!
All modern host systems should have MSI, as this is required by the
PCIe specification, but it still somewhat limits the choice of your
hosts.
Arnd <><
next prev parent reply other threads:[~2009-01-15 12:58 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-07 19:50 [PATCH RFC v5] net: add PCINet driver Ira Snyder
2009-01-08 19:16 ` David Miller
2009-01-08 19:27 ` Ira Snyder
2009-01-08 21:51 ` Ira Snyder
2009-01-10 23:32 ` Benjamin Herrenschmidt
2009-01-12 17:56 ` Arnd Bergmann
2009-01-13 2:32 ` Rusty Russell
2009-01-13 3:34 ` Ira Snyder
2009-01-13 16:33 ` Arnd Bergmann
2009-01-13 16:40 ` Ira Snyder
2009-01-13 17:42 ` Arnd Bergmann
2009-01-15 0:12 ` Ira Snyder
2009-01-15 12:58 ` Arnd Bergmann [this message]
2009-01-15 16:54 ` Ira Snyder
2009-01-15 17:53 ` Arnd Bergmann
2009-01-15 18:20 ` Ira Snyder
2009-01-15 20:57 ` Arnd Bergmann
2009-01-15 23:27 ` Ira Snyder
2009-01-15 19:21 ` Ira Snyder
2009-01-15 21:22 ` Arnd Bergmann
2009-01-15 21:40 ` Ira Snyder
2009-01-15 22:53 ` Arnd Bergmann
2009-01-15 23:31 ` Ira Snyder
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=200901151358.34250.arnd@arndb.de \
--to=arnd@arndb.de \
--cc=davem@davemloft.net \
--cc=iws@ovro.caltech.edu \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@ozlabs.org \
--cc=netdev@vger.kernel.org \
--cc=rusty@rustcorp.com.au \
--cc=shemminger@vyatta.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