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author | rpaulo <rpaulo@FreeBSD.org> | 2013-07-07 19:47:22 +0000 |
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committer | rpaulo <rpaulo@FreeBSD.org> | 2013-07-07 19:47:22 +0000 |
commit | 425027ec4be8e60a64168ddd797ef396445e6c26 (patch) | |
tree | 1762103b29d942596cb66c49fb60fad4f580a25d /sys/dev/mbox | |
parent | 0d471075a33d53dd1f41f82ad27d8b083aaaacea (diff) | |
download | FreeBSD-src-425027ec4be8e60a64168ddd797ef396445e6c26.zip FreeBSD-src-425027ec4be8e60a64168ddd797ef396445e6c26.tar.gz |
Add a mailbox interface.
Mailboxes are an IPC mechanism found on several ARM architectures, namely
OMAP4, BCM2385, Sitara, etc.
Reviewed by: gonzo
Diffstat (limited to 'sys/dev/mbox')
-rw-r--r-- | sys/dev/mbox/mbox_if.m | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sys/dev/mbox/mbox_if.m b/sys/dev/mbox/mbox_if.m new file mode 100644 index 0000000..ad29a7d --- /dev/null +++ b/sys/dev/mbox/mbox_if.m @@ -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; +}; |