[RFC] Inter-processor Mailboxes Drivers
meador_inge at mentor.com
Wed Feb 16 08:58:42 EST 2011
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
>> 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.
Meador Inge | meador_inge AT mentor.com
Mentor Embedded | http://www.mentor.com/embedded-software
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