From: Meador Inge <meador_inge@mentor.com>
To: Jamie Iles <jamie@jamieiles.com>
Cc: openmcapi-dev@googlegroups.com, "Blanchard,
Hollis" <Hollis_Blanchard@mentor.com>,
Hiroshi DOYU <Hiroshi.DOYU@nokia.com>,
linuxppc-dev@lists.ozlabs.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [RFC] Inter-processor Mailboxes Drivers
Date: Tue, 15 Feb 2011 15:58:42 -0600 [thread overview]
Message-ID: <4D5AF712.3080509@mentor.com> (raw)
In-Reply-To: <20110214100104.GC4371@pulham.picochip.com>
On 02/14/2011 04:01 AM, Jamie Iles wrote:
> On Fri, Feb 11, 2011 at 03:19:51PM -0600, Meador Inge wrote:
>> 1. Hardware specific bits somewhere under '.../arch/*'. Drivers
>> for the MPIC message registers on Power and OMAP4 mailboxes, for
>> example.
>> 2. A higher level driver under '.../drivers/mailbox/*'. That the
>> pieces in (1) would register with. This piece would expose the
>> main kernel API.
>> 3. Userspace interfaces for accessing the mailboxes. A
>> '/dev/mailbox1', '/dev/mailbox2', etc... mapping, for example.
>
> How about using virtio for all of this and having the mailbox as a
> notification/message passing driver for the virtio backend? There are
> already virtio console and network drivers that could be useful for the
> userspace part of it. drivers/virtio/virtio_ring.c might be a good
> starting point if you thought there was some mileage in this approach.
To be honest, I am not that familiar with 'virtio', but I will take a
look. Thanks for the pointer. Maybe Hollis can speak to this idea more.
> Jamie
>
--
Meador Inge | meador_inge AT mentor.com
Mentor Embedded | http://www.mentor.com/embedded-software
WARNING: multiple messages have this Message-ID (diff)
From: meador_inge@mentor.com (Meador Inge)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC] Inter-processor Mailboxes Drivers
Date: Tue, 15 Feb 2011 15:58:42 -0600 [thread overview]
Message-ID: <4D5AF712.3080509@mentor.com> (raw)
In-Reply-To: <20110214100104.GC4371@pulham.picochip.com>
On 02/14/2011 04:01 AM, Jamie Iles wrote:
> On Fri, Feb 11, 2011 at 03:19:51PM -0600, Meador Inge wrote:
>> 1. Hardware specific bits somewhere under '.../arch/*'. Drivers
>> for the MPIC message registers on Power and OMAP4 mailboxes, for
>> example.
>> 2. A higher level driver under '.../drivers/mailbox/*'. That the
>> pieces in (1) would register with. This piece would expose the
>> main kernel API.
>> 3. Userspace interfaces for accessing the mailboxes. A
>> '/dev/mailbox1', '/dev/mailbox2', etc... mapping, for example.
>
> How about using virtio for all of this and having the mailbox as a
> notification/message passing driver for the virtio backend? There are
> already virtio console and network drivers that could be useful for the
> userspace part of it. drivers/virtio/virtio_ring.c might be a good
> starting point if you thought there was some mileage in this approach.
To be honest, I am not that familiar with 'virtio', but I will take a
look. Thanks for the pointer. Maybe Hollis can speak to this idea more.
> Jamie
>
--
Meador Inge | meador_inge AT mentor.com
Mentor Embedded | http://www.mentor.com/embedded-software
next prev parent reply other threads:[~2011-02-15 21:58 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-11 21:19 [RFC] Inter-processor Mailboxes Drivers Meador Inge
2011-02-11 21:19 ` Meador Inge
2011-02-12 6:28 ` Sundar
2011-02-12 6:28 ` Sundar
2011-02-13 21:16 ` Linus Walleij
2011-02-13 21:16 ` Linus Walleij
2011-02-14 7:32 ` Hiroshi DOYU
2011-02-14 7:32 ` Hiroshi DOYU
2011-02-14 8:39 ` Linus Walleij
2011-02-14 8:39 ` Linus Walleij
2011-02-14 8:55 ` Hiroshi DOYU
2011-02-14 8:55 ` Hiroshi DOYU
2011-02-14 9:00 ` Linus Walleij
2011-02-14 9:00 ` Linus Walleij
2011-02-14 9:06 ` Hiroshi DOYU
2011-02-14 9:06 ` Hiroshi DOYU
2011-02-13 21:24 ` Linus Walleij
2011-02-13 21:24 ` Linus Walleij
2011-02-14 23:05 ` Blanchard, Hollis
2011-02-14 23:05 ` Blanchard, Hollis
2011-02-16 21:54 ` Linus Walleij
2011-02-16 21:54 ` Linus Walleij
2011-02-14 7:21 ` Hiroshi DOYU
2011-02-14 7:21 ` Hiroshi DOYU
2011-02-14 10:01 ` Jamie Iles
2011-02-14 10:01 ` Jamie Iles
2011-02-14 10:03 ` Ohad Ben-Cohen
2011-02-14 10:03 ` Ohad Ben-Cohen
2011-02-14 16:53 ` Ira W. Snyder
2011-02-14 16:53 ` Ira W. Snyder
2011-02-15 21:58 ` Meador Inge [this message]
2011-02-15 21:58 ` Meador Inge
2011-02-15 23:38 ` Blanchard, Hollis
2011-02-15 23:38 ` Blanchard, Hollis
2011-02-16 6:22 ` Hiroshi DOYU
2011-02-16 6:22 ` Hiroshi DOYU
2011-02-16 20:22 ` [openmcapi-dev] " Blanchard, Hollis
2011-02-16 20:22 ` Blanchard, Hollis
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