Date: Sun, 7 Jul 2013 19:47:23 +0000 (UTC) From: Rui Paulo <rpaulo@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r252998 - head/sys/dev/mbox Message-ID: <201307071947.r67JlNZ6013809@svn.freebsd.org>
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Author: rpaulo Date: Sun Jul 7 19:47:22 2013 New Revision: 252998 URL: http://svnweb.freebsd.org/changeset/base/252998 Log: Add a mailbox interface. Mailboxes are an IPC mechanism found on several ARM architectures, namely OMAP4, BCM2385, Sitara, etc. Reviewed by: gonzo Added: head/sys/dev/mbox/ head/sys/dev/mbox/mbox_if.m (contents, props changed) Added: head/sys/dev/mbox/mbox_if.m ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/dev/mbox/mbox_if.m Sun Jul 7 19:47:22 2013 (r252998) @@ -0,0 +1,46 @@ +#- +# Copyright (c) 2013 Rui Paulo +# All rights reserved. +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in the +# documentation and/or other materials provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +# SUCH DAMAGE. +# +# $FreeBSD$ +# +# Mailboxes are used as an IPC mechanism that allows subsystems to +# communicate with each other. +# A system can have multiple mailboxes (e.g. OMAP4) but there's usually a +# system wide mailbox. +# + +INTERFACE mbox; + +METHOD int read { + device_t dev; + int channel; + uint32_t *data; +}; + +METHOD int write { + device_t dev; + int channel; + uint32_t data; +};
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