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/*-
* Copyright (c) 2013 Luiz Otavio O Souza.
* Copyright (c) 2011-2012 Stefan Bethke.
* Copyright (c) 2012 Adrian Chadd.
* 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/errno.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <machine/bus.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/etherswitch/mdio.h>
#include <dev/etherswitch/etherswitch.h>
#include "mdio_if.h"
#include "miibus_if.h"
#include "etherswitch_if.h"
MALLOC_DECLARE(M_UKSWITCH);
MALLOC_DEFINE(M_UKSWITCH, "ukswitch", "ukswitch data structures");
struct ukswitch_softc {
struct mtx sc_mtx; /* serialize access to softc */
device_t sc_dev;
int media; /* cpu port media */
int cpuport; /* which PHY is connected to the CPU */
int phymask; /* PHYs we manage */
int numports; /* number of ports */
int ifpport[MII_NPHY];
int *portphy;
char **ifname;
device_t **miibus;
struct ifnet **ifp;
struct callout callout_tick;
etherswitch_info_t info;
};
#define UKSWITCH_LOCK(_sc) \
mtx_lock(&(_sc)->sc_mtx)
#define UKSWITCH_UNLOCK(_sc) \
mtx_unlock(&(_sc)->sc_mtx)
#define UKSWITCH_LOCK_ASSERT(_sc, _what) \
mtx_assert(&(_sc)->sc_mtx, (_what))
#define UKSWITCH_TRYLOCK(_sc) \
mtx_trylock(&(_sc)->sc_mtx)
#if defined(DEBUG)
#define DPRINTF(dev, args...) device_printf(dev, args)
#else
#define DPRINTF(dev, args...)
#endif
static inline int ukswitch_portforphy(struct ukswitch_softc *, int);
static void ukswitch_tick(void *);
static int ukswitch_ifmedia_upd(struct ifnet *);
static void ukswitch_ifmedia_sts(struct ifnet *, struct ifmediareq *);
static int
ukswitch_probe(device_t dev)
{
struct ukswitch_softc *sc;
sc = device_get_softc(dev);
bzero(sc, sizeof(*sc));
device_set_desc_copy(dev, "Generic MDIO switch driver");
return (BUS_PROBE_DEFAULT);
}
static int
ukswitch_attach_phys(struct ukswitch_softc *sc)
{
int phy, port = 0, err = 0;
char name[IFNAMSIZ];
/* PHYs need an interface, so we generate a dummy one */
snprintf(name, IFNAMSIZ, "%sport", device_get_nameunit(sc->sc_dev));
for (phy = 0; phy < MII_NPHY; phy++) {
if (((1 << phy) & sc->phymask) == 0)
continue;
sc->ifpport[phy] = port;
sc->portphy[port] = phy;
sc->ifp[port] = if_alloc(IFT_ETHER);
sc->ifp[port]->if_softc = sc;
sc->ifp[port]->if_flags |= IFF_UP | IFF_BROADCAST |
IFF_DRV_RUNNING | IFF_SIMPLEX;
sc->ifname[port] = malloc(strlen(name)+1, M_UKSWITCH, M_WAITOK);
bcopy(name, sc->ifname[port], strlen(name)+1);
if_initname(sc->ifp[port], sc->ifname[port], port);
sc->miibus[port] = malloc(sizeof(device_t), M_UKSWITCH,
M_WAITOK | M_ZERO);
err = mii_attach(sc->sc_dev, sc->miibus[port], sc->ifp[port],
ukswitch_ifmedia_upd, ukswitch_ifmedia_sts, \
BMSR_DEFCAPMASK, phy, MII_OFFSET_ANY, 0);
DPRINTF(sc->sc_dev, "%s attached to pseudo interface %s\n",
device_get_nameunit(*sc->miibus[port]),
sc->ifp[port]->if_xname);
if (err != 0) {
device_printf(sc->sc_dev,
"attaching PHY %d failed\n",
phy);
break;
}
sc->info.es_nports = port + 1;
if (++port >= sc->numports)
break;
}
return (err);
}
static int
ukswitch_attach(device_t dev)
{
struct ukswitch_softc *sc;
int err = 0;
sc = device_get_softc(dev);
sc->sc_dev = dev;
mtx_init(&sc->sc_mtx, "ukswitch", NULL, MTX_DEF);
strlcpy(sc->info.es_name, device_get_desc(dev),
sizeof(sc->info.es_name));
/* XXX Defaults */
sc->numports = 6;
sc->phymask = 0x0f;
sc->cpuport = -1;
sc->media = 100;
(void) resource_int_value(device_get_name(dev), device_get_unit(dev),
"numports", &sc->numports);
(void) resource_int_value(device_get_name(dev), device_get_unit(dev),
"phymask", &sc->phymask);
(void) resource_int_value(device_get_name(dev), device_get_unit(dev),
"cpuport", &sc->cpuport);
(void) resource_int_value(device_get_name(dev), device_get_unit(dev),
"media", &sc->media);
/* Support only fast and giga ethernet. */
if (sc->media != 100 && sc->media != 1000)
sc->media = 100;
if (sc->cpuport != -1)
/* Always attach the cpu port. */
sc->phymask |= (1 << sc->cpuport);
/* We do not support any vlan groups. */
sc->info.es_nvlangroups = 0;
sc->ifp = malloc(sizeof(struct ifnet *) * sc->numports, M_UKSWITCH,
M_WAITOK | M_ZERO);
sc->ifname = malloc(sizeof(char *) * sc->numports, M_UKSWITCH,
M_WAITOK | M_ZERO);
sc->miibus = malloc(sizeof(device_t *) * sc->numports, M_UKSWITCH,
M_WAITOK | M_ZERO);
sc->portphy = malloc(sizeof(int) * sc->numports, M_UKSWITCH,
M_WAITOK | M_ZERO);
/*
* Attach the PHYs and complete the bus enumeration.
*/
err = ukswitch_attach_phys(sc);
if (err != 0)
return (err);
bus_generic_probe(dev);
bus_enumerate_hinted_children(dev);
err = bus_generic_attach(dev);
if (err != 0)
return (err);
callout_init(&sc->callout_tick, 0);
ukswitch_tick(sc);
return (err);
}
static int
ukswitch_detach(device_t dev)
{
struct ukswitch_softc *sc = device_get_softc(dev);
int i, port;
callout_drain(&sc->callout_tick);
for (i=0; i < MII_NPHY; i++) {
if (((1 << i) & sc->phymask) == 0)
continue;
port = ukswitch_portforphy(sc, i);
if (sc->miibus[port] != NULL)
device_delete_child(dev, (*sc->miibus[port]));
if (sc->ifp[port] != NULL)
if_free(sc->ifp[port]);
free(sc->ifname[port], M_UKSWITCH);
free(sc->miibus[port], M_UKSWITCH);
}
free(sc->portphy, M_UKSWITCH);
free(sc->miibus, M_UKSWITCH);
free(sc->ifname, M_UKSWITCH);
free(sc->ifp, M_UKSWITCH);
bus_generic_detach(dev);
mtx_destroy(&sc->sc_mtx);
return (0);
}
/*
* Convert PHY number to port number.
*/
static inline int
ukswitch_portforphy(struct ukswitch_softc *sc, int phy)
{
return (sc->ifpport[phy]);
}
static inline struct mii_data *
ukswitch_miiforport(struct ukswitch_softc *sc, int port)
{
if (port < 0 || port > sc->numports)
return (NULL);
return (device_get_softc(*sc->miibus[port]));
}
static inline struct ifnet *
ukswitch_ifpforport(struct ukswitch_softc *sc, int port)
{
if (port < 0 || port > sc->numports)
return (NULL);
return (sc->ifp[port]);
}
/*
* Poll the status for all PHYs.
*/
static void
ukswitch_miipollstat(struct ukswitch_softc *sc)
{
int i, port;
struct mii_data *mii;
struct mii_softc *miisc;
UKSWITCH_LOCK_ASSERT(sc, MA_NOTOWNED);
for (i = 0; i < MII_NPHY; i++) {
if (((1 << i) & sc->phymask) == 0)
continue;
port = ukswitch_portforphy(sc, i);
if ((*sc->miibus[port]) == NULL)
continue;
mii = device_get_softc(*sc->miibus[port]);
LIST_FOREACH(miisc, &mii->mii_phys, mii_list) {
if (IFM_INST(mii->mii_media.ifm_cur->ifm_media) !=
miisc->mii_inst)
continue;
ukphy_status(miisc);
mii_phy_update(miisc, MII_POLLSTAT);
}
}
}
static void
ukswitch_tick(void *arg)
{
struct ukswitch_softc *sc = arg;
ukswitch_miipollstat(sc);
callout_reset(&sc->callout_tick, hz, ukswitch_tick, sc);
}
static void
ukswitch_lock(device_t dev)
{
struct ukswitch_softc *sc = device_get_softc(dev);
UKSWITCH_LOCK_ASSERT(sc, MA_NOTOWNED);
UKSWITCH_LOCK(sc);
}
static void
ukswitch_unlock(device_t dev)
{
struct ukswitch_softc *sc = device_get_softc(dev);
UKSWITCH_LOCK_ASSERT(sc, MA_OWNED);
UKSWITCH_UNLOCK(sc);
}
static etherswitch_info_t *
ukswitch_getinfo(device_t dev)
{
struct ukswitch_softc *sc = device_get_softc(dev);
return (&sc->info);
}
static int
ukswitch_getport(device_t dev, etherswitch_port_t *p)
{
struct ukswitch_softc *sc = device_get_softc(dev);
struct mii_data *mii;
struct ifmediareq *ifmr = &p->es_ifmr;
int err, phy;
if (p->es_port < 0 || p->es_port >= sc->numports)
return (ENXIO);
p->es_pvid = 0;
phy = sc->portphy[p->es_port];
mii = ukswitch_miiforport(sc, p->es_port);
if (sc->cpuport != -1 && phy == sc->cpuport) {
/* fill in fixed values for CPU port */
p->es_flags |= ETHERSWITCH_PORT_CPU;
ifmr->ifm_count = 0;
if (sc->media == 100)
ifmr->ifm_current = ifmr->ifm_active =
IFM_ETHER | IFM_100_TX | IFM_FDX;
else
ifmr->ifm_current = ifmr->ifm_active =
IFM_ETHER | IFM_1000_T | IFM_FDX;
ifmr->ifm_mask = 0;
ifmr->ifm_status = IFM_ACTIVE | IFM_AVALID;
} else if (mii != NULL) {
err = ifmedia_ioctl(mii->mii_ifp, &p->es_ifr,
&mii->mii_media, SIOCGIFMEDIA);
if (err)
return (err);
} else {
return (ENXIO);
}
return (0);
}
static int
ukswitch_setport(device_t dev, etherswitch_port_t *p)
{
struct ukswitch_softc *sc = device_get_softc(dev);
struct ifmedia *ifm;
struct mii_data *mii;
struct ifnet *ifp;
int err;
if (p->es_port < 0 || p->es_port >= sc->numports)
return (ENXIO);
if (sc->portphy[p->es_port] == sc->cpuport)
return (ENXIO);
mii = ukswitch_miiforport(sc, p->es_port);
if (mii == NULL)
return (ENXIO);
ifp = ukswitch_ifpforport(sc, p->es_port);
ifm = &mii->mii_media;
err = ifmedia_ioctl(ifp, &p->es_ifr, ifm, SIOCSIFMEDIA);
return (err);
}
static int
ukswitch_getvgroup(device_t dev, etherswitch_vlangroup_t *vg)
{
/* Not supported. */
vg->es_vid = 0;
vg->es_member_ports = 0;
vg->es_untagged_ports = 0;
vg->es_fid = 0;
return (0);
}
static int
ukswitch_setvgroup(device_t dev, etherswitch_vlangroup_t *vg)
{
/* Not supported. */
return (0);
}
static void
ukswitch_statchg(device_t dev)
{
DPRINTF(dev, "%s\n", __func__);
}
static int
ukswitch_ifmedia_upd(struct ifnet *ifp)
{
struct ukswitch_softc *sc = ifp->if_softc;
struct mii_data *mii = ukswitch_miiforport(sc, ifp->if_dunit);
DPRINTF(sc->sc_dev, "%s\n", __func__);
if (mii == NULL)
return (ENXIO);
mii_mediachg(mii);
return (0);
}
static void
ukswitch_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
{
struct ukswitch_softc *sc = ifp->if_softc;
struct mii_data *mii = ukswitch_miiforport(sc, ifp->if_dunit);
DPRINTF(sc->sc_dev, "%s\n", __func__);
if (mii == NULL)
return;
mii_pollstat(mii);
ifmr->ifm_active = mii->mii_media_active;
ifmr->ifm_status = mii->mii_media_status;
}
static int
ukswitch_readphy(device_t dev, int phy, int reg)
{
struct ukswitch_softc *sc;
int data;
sc = device_get_softc(dev);
UKSWITCH_LOCK_ASSERT(sc, MA_NOTOWNED);
if (phy < 0 || phy >= 32)
return (ENXIO);
if (reg < 0 || reg >= 32)
return (ENXIO);
UKSWITCH_LOCK(sc);
data = MDIO_READREG(device_get_parent(dev), phy, reg);
UKSWITCH_UNLOCK(sc);
return (data);
}
static int
ukswitch_writephy(device_t dev, int phy, int reg, int data)
{
struct ukswitch_softc *sc;
int err;
sc = device_get_softc(dev);
UKSWITCH_LOCK_ASSERT(sc, MA_NOTOWNED);
if (phy < 0 || phy >= 32)
return (ENXIO);
if (reg < 0 || reg >= 32)
return (ENXIO);
UKSWITCH_LOCK(sc);
err = MDIO_WRITEREG(device_get_parent(dev), phy, reg, data);
UKSWITCH_UNLOCK(sc);
return (err);
}
static int
ukswitch_readreg(device_t dev, int addr)
{
struct ukswitch_softc *sc;
sc = device_get_softc(dev);
UKSWITCH_LOCK_ASSERT(sc, MA_OWNED);
/* Not supported. */
return (0);
}
static int
ukswitch_writereg(device_t dev, int addr, int value)
{
struct ukswitch_softc *sc;
sc = device_get_softc(dev);
UKSWITCH_LOCK_ASSERT(sc, MA_OWNED);
/* Not supported. */
return (0);
}
static device_method_t ukswitch_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ukswitch_probe),
DEVMETHOD(device_attach, ukswitch_attach),
DEVMETHOD(device_detach, ukswitch_detach),
/* bus interface */
DEVMETHOD(bus_add_child, device_add_child_ordered),
/* MII interface */
DEVMETHOD(miibus_readreg, ukswitch_readphy),
DEVMETHOD(miibus_writereg, ukswitch_writephy),
DEVMETHOD(miibus_statchg, ukswitch_statchg),
/* MDIO interface */
DEVMETHOD(mdio_readreg, ukswitch_readphy),
DEVMETHOD(mdio_writereg, ukswitch_writephy),
/* etherswitch interface */
DEVMETHOD(etherswitch_lock, ukswitch_lock),
DEVMETHOD(etherswitch_unlock, ukswitch_unlock),
DEVMETHOD(etherswitch_getinfo, ukswitch_getinfo),
DEVMETHOD(etherswitch_readreg, ukswitch_readreg),
DEVMETHOD(etherswitch_writereg, ukswitch_writereg),
DEVMETHOD(etherswitch_readphyreg, ukswitch_readphy),
DEVMETHOD(etherswitch_writephyreg, ukswitch_writephy),
DEVMETHOD(etherswitch_getport, ukswitch_getport),
DEVMETHOD(etherswitch_setport, ukswitch_setport),
DEVMETHOD(etherswitch_getvgroup, ukswitch_getvgroup),
DEVMETHOD(etherswitch_setvgroup, ukswitch_setvgroup),
DEVMETHOD_END
};
DEFINE_CLASS_0(ukswitch, ukswitch_driver, ukswitch_methods,
sizeof(struct ukswitch_softc));
static devclass_t ukswitch_devclass;
DRIVER_MODULE(ukswitch, mdio, ukswitch_driver, ukswitch_devclass, 0, 0);
DRIVER_MODULE(miibus, ukswitch, miibus_driver, miibus_devclass, 0, 0);
DRIVER_MODULE(mdio, ukswitch, mdio_driver, mdio_devclass, 0, 0);
DRIVER_MODULE(etherswitch, ukswitch, etherswitch_driver, etherswitch_devclass, 0, 0);
MODULE_VERSION(ukswitch, 1);
MODULE_DEPEND(ukswitch, miibus, 1, 1, 1); /* XXX which versions? */
MODULE_DEPEND(ukswitch, etherswitch, 1, 1, 1); /* XXX which versions? */
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