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freebsd-dev/sys/dev/etherswitch/miiproxy.h

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Bring over the first part of the etherswitch framework - an MDIO bus and MDIO/MII rendezvous proxy. * Add an 'mdio' bus, which is the "IO" side of an MII bus (but by design can be anything which implements the underlying register access API.) * Add 'miiproxy' and 'mdioproxy', which provides a rendezvous mechanism for MII busses to appear hanging off arbitrary busses (ie, that aren't necessarily a traditional looking MII bus.) MII busses can now hang off anything that implements an mdiobus. For the AR71xx SoC, there's one MDIO bus but two MII busses. So to properly support two or more real PHYs, this can be done: # arge0 MDIO bus - there's no arge1 MDIO bus for AR71xx hint.argemdio.0.at="nexus0" hint.argemdio.0.maddr=0x19000000 hint.argemdio.0.msize=0x1000 hint.argemdio.0.order=0 # Create two mdioproxy instances hint.mdioproxy.0.at="mdio0" hint.mdioproxy.1.at="mdio0" # .. and with a follow-up patch hint.arge.0.mdio=mdioproxy0 hint.arge.1.mdio=mdioproxy0 TODO: * Do a sweep or two and add appropriate locking in mdio/mdioproxy/miiproxy. Submitted by: Stefan Bethke <stb@lassitu.de> Reviewed by: ray
2012-05-01 06:11:38 +00:00
/*-
sys/dev: further adoption of SPDX licensing ID tags. Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
2017-11-27 14:52:40 +00:00
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
Bring over the first part of the etherswitch framework - an MDIO bus and MDIO/MII rendezvous proxy. * Add an 'mdio' bus, which is the "IO" side of an MII bus (but by design can be anything which implements the underlying register access API.) * Add 'miiproxy' and 'mdioproxy', which provides a rendezvous mechanism for MII busses to appear hanging off arbitrary busses (ie, that aren't necessarily a traditional looking MII bus.) MII busses can now hang off anything that implements an mdiobus. For the AR71xx SoC, there's one MDIO bus but two MII busses. So to properly support two or more real PHYs, this can be done: # arge0 MDIO bus - there's no arge1 MDIO bus for AR71xx hint.argemdio.0.at="nexus0" hint.argemdio.0.maddr=0x19000000 hint.argemdio.0.msize=0x1000 hint.argemdio.0.order=0 # Create two mdioproxy instances hint.mdioproxy.0.at="mdio0" hint.mdioproxy.1.at="mdio0" # .. and with a follow-up patch hint.arge.0.mdio=mdioproxy0 hint.arge.1.mdio=mdioproxy0 TODO: * Do a sweep or two and add appropriate locking in mdio/mdioproxy/miiproxy. Submitted by: Stefan Bethke <stb@lassitu.de> Reviewed by: ray
2012-05-01 06:11:38 +00:00
* Copyright (c) 2011-2012 Stefan Bethke.
* 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.
*
* $FreeBSD$
*/
#ifndef __DEV_ETHERSWITCH_MIIPROXY_H__
#define __DEV_ETHERSWITCH_MIIPROXY_H__
extern devclass_t miiproxy_devclass;
extern driver_t miiproxy_driver;
device_t mii_attach_proxy(device_t dev);
#endif /* __DEV_ETHERSWITCH_MIIPROXY_H__ */
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