e2db1d1f11
IEEE 802.3 Clause 45 added backwards-compatible support for 2^16 PHY registers through the addition of an additional device address frame. Clause 45 addressing is used in 10Gbe PHYs, 802.3az EEE registers, etc. It may make sense to provide a similar extension to the miibus interface, but I've refrained from unilaterally doing so here. Submitted by: Landon Fuller <landon@landonf.org> Differential Revision: https://reviews.freebsd.org/D4607
138 lines
3.4 KiB
C
138 lines
3.4 KiB
C
/*-
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/module.h>
|
|
|
|
#include <dev/mdio/mdio.h>
|
|
|
|
#include "mdio_if.h"
|
|
|
|
static void
|
|
mdio_identify(driver_t *driver, device_t parent)
|
|
{
|
|
|
|
if (device_find_child(parent, mdio_driver.name, -1) == NULL)
|
|
BUS_ADD_CHILD(parent, 0, mdio_driver.name, -1);
|
|
}
|
|
|
|
static int
|
|
mdio_probe(device_t dev)
|
|
{
|
|
|
|
device_set_desc(dev, "MDIO");
|
|
|
|
return (BUS_PROBE_SPECIFIC);
|
|
}
|
|
|
|
static int
|
|
mdio_attach(device_t dev)
|
|
{
|
|
|
|
bus_generic_probe(dev);
|
|
bus_enumerate_hinted_children(dev);
|
|
return (bus_generic_attach(dev));
|
|
}
|
|
|
|
static int
|
|
mdio_detach(device_t dev)
|
|
{
|
|
|
|
bus_generic_detach(dev);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mdio_readreg(device_t dev, int phy, int reg)
|
|
{
|
|
|
|
return (MDIO_READREG(device_get_parent(dev), phy, reg));
|
|
}
|
|
|
|
static int
|
|
mdio_writereg(device_t dev, int phy, int reg, int val)
|
|
{
|
|
|
|
return (MDIO_WRITEREG(device_get_parent(dev), phy, reg, val));
|
|
}
|
|
|
|
static int
|
|
mdio_readextreg(device_t dev, int phy, int devad, int reg)
|
|
{
|
|
|
|
return (MDIO_READEXTREG(device_get_parent(dev), phy, devad, reg));
|
|
}
|
|
|
|
static int
|
|
mdio_writeextreg(device_t dev, int phy, int devad, int reg,
|
|
int val)
|
|
{
|
|
|
|
return (MDIO_WRITEEXTREG(device_get_parent(dev), phy, devad, reg, val));
|
|
}
|
|
|
|
static void
|
|
mdio_hinted_child(device_t dev, const char *name, int unit)
|
|
{
|
|
|
|
device_add_child(dev, name, unit);
|
|
}
|
|
|
|
static device_method_t mdio_methods[] = {
|
|
/* device interface */
|
|
DEVMETHOD(device_identify, mdio_identify),
|
|
DEVMETHOD(device_probe, mdio_probe),
|
|
DEVMETHOD(device_attach, mdio_attach),
|
|
DEVMETHOD(device_detach, mdio_detach),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
|
|
/* bus interface */
|
|
DEVMETHOD(bus_add_child, device_add_child_ordered),
|
|
DEVMETHOD(bus_hinted_child, mdio_hinted_child),
|
|
|
|
/* MDIO access */
|
|
DEVMETHOD(mdio_readreg, mdio_readreg),
|
|
DEVMETHOD(mdio_writereg, mdio_writereg),
|
|
DEVMETHOD(mdio_readextreg, mdio_readextreg),
|
|
DEVMETHOD(mdio_writeextreg, mdio_writeextreg),
|
|
|
|
DEVMETHOD_END
|
|
};
|
|
|
|
driver_t mdio_driver = {
|
|
"mdio",
|
|
mdio_methods,
|
|
0
|
|
};
|
|
|
|
devclass_t mdio_devclass;
|
|
|
|
MODULE_VERSION(mdio, 1);
|