212 lines
5.3 KiB
C
212 lines
5.3 KiB
C
/*-
|
|
* Copyright (c) 2016 Justin Hibbits
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/module.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/resource.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
#include <net/if.h>
|
|
#include <net/if_media.h>
|
|
#include <net/if_types.h>
|
|
#include <net/if_var.h>
|
|
|
|
#include <dev/mii/mii.h>
|
|
#include <dev/mii/miivar.h>
|
|
|
|
#include <dev/ofw/ofw_bus.h>
|
|
#include <dev/ofw/ofw_bus_subr.h>
|
|
|
|
#include <contrib/ncsw/inc/Peripherals/fm_ext.h>
|
|
|
|
#include "fman.h"
|
|
#include "miibus_if.h"
|
|
|
|
#define MDIO_LOCK() mtx_lock(&sc->sc_lock)
|
|
#define MDIO_UNLOCK() mtx_unlock(&sc->sc_lock)
|
|
#define MDIO_WRITE4(sc,r,v) \
|
|
bus_space_write_4(&bs_be_tag, sc->sc_handle, sc->sc_offset + r, v)
|
|
#define MDIO_READ4(sc, r) \
|
|
bus_space_read_4(&bs_be_tag, sc->sc_handle, sc->sc_offset + r)
|
|
|
|
#define MDIO_MIIMCFG 0x0
|
|
#define MDIO_MIIMCOM 0x4
|
|
#define MIIMCOM_SCAN_CYCLE 0x00000002
|
|
#define MIIMCOM_READ_CYCLE 0x00000001
|
|
#define MDIO_MIIMADD 0x8
|
|
#define MDIO_MIIMCON 0xc
|
|
#define MDIO_MIIMSTAT 0x10
|
|
#define MDIO_MIIMIND 0x14
|
|
#define MIIMIND_BUSY 0x1
|
|
|
|
static int pqmdio_fdt_probe(device_t dev);
|
|
static int pqmdio_fdt_attach(device_t dev);
|
|
static int pqmdio_detach(device_t dev);
|
|
static int pqmdio_miibus_readreg(device_t dev, int phy, int reg);
|
|
static int pqmdio_miibus_writereg(device_t dev, int phy, int reg, int value);
|
|
|
|
struct pqmdio_softc {
|
|
struct mtx sc_lock;
|
|
bus_space_handle_t sc_handle;
|
|
int sc_offset;
|
|
};
|
|
|
|
static device_method_t pqmdio_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, pqmdio_fdt_probe),
|
|
DEVMETHOD(device_attach, pqmdio_fdt_attach),
|
|
DEVMETHOD(device_detach, pqmdio_detach),
|
|
|
|
/* MII interface */
|
|
DEVMETHOD(miibus_readreg, pqmdio_miibus_readreg),
|
|
DEVMETHOD(miibus_writereg, pqmdio_miibus_writereg),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static struct ofw_compat_data mdio_compat_data[] = {
|
|
{"fsl,fman-mdio", 0},
|
|
{NULL, 0}
|
|
};
|
|
|
|
static driver_t pqmdio_driver = {
|
|
"pq_mdio",
|
|
pqmdio_methods,
|
|
sizeof(struct pqmdio_softc),
|
|
};
|
|
|
|
static int
|
|
pqmdio_fdt_probe(device_t dev)
|
|
{
|
|
|
|
if (!ofw_bus_status_okay(dev))
|
|
return (ENXIO);
|
|
|
|
if (!ofw_bus_search_compatible(dev, mdio_compat_data)->ocd_str)
|
|
return (ENXIO);
|
|
|
|
device_set_desc(dev, "Freescale QorIQ MDIO");
|
|
|
|
return (BUS_PROBE_DEFAULT);
|
|
}
|
|
|
|
static int
|
|
pqmdio_fdt_attach(device_t dev)
|
|
{
|
|
struct pqmdio_softc *sc;
|
|
rman_res_t start, count;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
fman_get_bushandle(device_get_parent(dev), &sc->sc_handle);
|
|
bus_get_resource(dev, SYS_RES_MEMORY, 0, &start, &count);
|
|
sc->sc_offset = start;
|
|
|
|
OF_device_register_xref(OF_xref_from_node(ofw_bus_get_node(dev)), dev);
|
|
|
|
mtx_init(&sc->sc_lock, device_get_nameunit(dev), "QorIQ MDIO lock",
|
|
MTX_DEF);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
pqmdio_detach(device_t dev)
|
|
{
|
|
struct pqmdio_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
mtx_destroy(&sc->sc_lock);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
pqmdio_miibus_readreg(device_t dev, int phy, int reg)
|
|
{
|
|
struct pqmdio_softc *sc;
|
|
int rv;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
MDIO_LOCK();
|
|
|
|
MDIO_WRITE4(sc, MDIO_MIIMADD, (phy << 8) | reg);
|
|
MDIO_WRITE4(sc, MDIO_MIIMCOM, MIIMCOM_READ_CYCLE);
|
|
|
|
MDIO_READ4(sc, MDIO_MIIMCOM);
|
|
|
|
while ((MDIO_READ4(sc, MDIO_MIIMIND)) & MIIMIND_BUSY)
|
|
;
|
|
|
|
rv = MDIO_READ4(sc, MDIO_MIIMSTAT);
|
|
|
|
MDIO_WRITE4(sc, MDIO_MIIMCOM, 0);
|
|
MDIO_READ4(sc, MDIO_MIIMCOM);
|
|
MDIO_UNLOCK();
|
|
|
|
return (rv);
|
|
}
|
|
|
|
int
|
|
pqmdio_miibus_writereg(device_t dev, int phy, int reg, int value)
|
|
{
|
|
struct pqmdio_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
MDIO_LOCK();
|
|
/* Stop the MII management read cycle */
|
|
MDIO_WRITE4(sc, MDIO_MIIMCOM, 0);
|
|
MDIO_READ4(sc, MDIO_MIIMCOM);
|
|
|
|
MDIO_WRITE4(sc, MDIO_MIIMADD, (phy << 8) | reg);
|
|
|
|
MDIO_WRITE4(sc, MDIO_MIIMCON, value);
|
|
MDIO_READ4(sc, MDIO_MIIMCON);
|
|
|
|
/* Wait till MII management write is complete */
|
|
while ((MDIO_READ4(sc, MDIO_MIIMIND)) & MIIMIND_BUSY)
|
|
;
|
|
MDIO_UNLOCK();
|
|
|
|
return (0);
|
|
}
|
|
|
|
EARLY_DRIVER_MODULE(pqmdio, fman, pqmdio_driver, 0, 0,
|
|
BUS_PASS_SUPPORTDEV);
|
|
DRIVER_MODULE(miibus, pqmdio, miibus_driver, 0, 0);
|
|
MODULE_DEPEND(pqmdio, miibus, 1, 1, 1);
|
|
|