freebsd-nq/sys/dev/mii/jmphy.c

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2008-05-27 01:16:40 +00:00
/*-
* Copyright (c) 2008, Pyun YongHyeon <yongari@FreeBSD.org>
* 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 unmodified, 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>
__FBSDID("$FreeBSD$");
/*
* Driver for the JMicron JMP211 10/100/1000, JMP202 10/100 PHY.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/socket.h>
#include <sys/bus.h>
#include <net/if.h>
#include <net/if_media.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include "miidevs.h"
#include <dev/mii/jmphyreg.h>
#include "miibus_if.h"
static int jmphy_probe(device_t);
static int jmphy_attach(device_t);
static void jmphy_reset(struct mii_softc *);
static uint16_t jmphy_anar(struct ifmedia_entry *);
static int jmphy_auto(struct mii_softc *, struct ifmedia_entry *);
struct jmphy_softc {
struct mii_softc mii_sc;
int mii_oui;
int mii_model;
int mii_rev;
};
static device_method_t jmphy_methods[] = {
/* Device interface. */
DEVMETHOD(device_probe, jmphy_probe),
DEVMETHOD(device_attach, jmphy_attach),
DEVMETHOD(device_detach, mii_phy_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
{ NULL, NULL }
};
static devclass_t jmphy_devclass;
static driver_t jmphy_driver = {
"jmphy",
jmphy_methods,
sizeof(struct jmphy_softc)
};
DRIVER_MODULE(jmphy, miibus, jmphy_driver, jmphy_devclass, 0, 0);
static int jmphy_service(struct mii_softc *, struct mii_data *, int);
static void jmphy_status(struct mii_softc *);
static const struct mii_phydesc jmphys[] = {
MII_PHY_DESC(JMICRON, JMP202),
MII_PHY_DESC(JMICRON, JMP211),
MII_PHY_END
};
static int
jmphy_probe(device_t dev)
{
return (mii_phy_dev_probe(dev, jmphys, BUS_PROBE_DEFAULT));
}
static int
jmphy_attach(device_t dev)
{
struct jmphy_softc *jsc;
struct mii_softc *sc;
struct mii_attach_args *ma;
struct mii_data *mii;
jsc = device_get_softc(dev);
sc = &jsc->mii_sc;
ma = device_get_ivars(dev);
sc->mii_dev = device_get_parent(dev);
mii = device_get_softc(sc->mii_dev);
LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
sc->mii_inst = mii->mii_instance;
sc->mii_phy = ma->mii_phyno;
sc->mii_service = jmphy_service;
sc->mii_pdata = mii;
mii->mii_instance++;
jsc->mii_oui = MII_OUI(ma->mii_id1, ma->mii_id2);
jsc->mii_model = MII_MODEL(ma->mii_id2);
jsc->mii_rev = MII_REV(ma->mii_id2);
if (bootverbose)
device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n",
jsc->mii_oui, jsc->mii_model, jsc->mii_rev);
jmphy_reset(sc);
sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
if (sc->mii_capabilities & BMSR_EXTSTAT)
sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
device_printf(dev, " ");
mii_phy_add_media(sc);
printf("\n");
MIIBUS_MEDIAINIT(sc->mii_dev);
return(0);
}
static int
jmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
uint16_t bmcr;
switch (cmd) {
case MII_POLLSTAT:
/*
* If we're not polling our PHY instance, just return.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
return (0);
break;
case MII_MEDIACHG:
/*
* If the media indicates a different PHY instance,
* isolate ourselves.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
bmcr = PHY_READ(sc, MII_BMCR);
PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO);
return (0);
}
/*
* If the interface is not up, don't do anything.
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
break;
if (jmphy_auto(sc, ife) != EJUSTRETURN)
return (EINVAL);
break;
case MII_TICK:
/*
* If we're not currently selected, just return.
*/
if (IFM_INST(ife->ifm_media) != sc->mii_inst)
return (0);
/*
* Is the interface even up?
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
return (0);
/*
* Only used for autonegotiation.
*/
if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
sc->mii_ticks = 0;
break;
}
/* Check for link. */
if ((PHY_READ(sc, JMPHY_SSR) & JMPHY_SSR_LINK_UP) != 0) {
sc->mii_ticks = 0;
break;
}
/* Announce link loss right after it happens. */
if (sc->mii_ticks++ == 0)
break;
if (sc->mii_ticks <= sc->mii_anegticks)
return (0);
sc->mii_ticks = 0;
jmphy_auto(sc, ife);
break;
}
/* Update the media status. */
jmphy_status(sc);
/* Callback if something changed. */
mii_phy_update(sc, cmd);
return (0);
}
static void
jmphy_status(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
int bmcr, ssr;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
ssr = PHY_READ(sc, JMPHY_SSR);
if ((ssr & JMPHY_SSR_LINK_UP) != 0)
mii->mii_media_status |= IFM_ACTIVE;
bmcr = PHY_READ(sc, MII_BMCR);
if ((bmcr & BMCR_ISO) != 0) {
mii->mii_media_active |= IFM_NONE;
mii->mii_media_status = 0;
return;
}
if ((bmcr & BMCR_LOOP) != 0)
mii->mii_media_active |= IFM_LOOP;
if ((ssr & JMPHY_SSR_SPD_DPLX_RESOLVED) == 0) {
/* Erg, still trying, I guess... */
mii->mii_media_active |= IFM_NONE;
return;
}
switch ((ssr & JMPHY_SSR_SPEED_MASK)) {
case JMPHY_SSR_SPEED_1000:
mii->mii_media_active |= IFM_1000_T;
/*
* jmphy(4) got a valid link so reset mii_ticks.
* Resetting mii_ticks is needed in order to
* detect link loss after auto-negotiation.
*/
sc->mii_ticks = 0;
break;
case JMPHY_SSR_SPEED_100:
mii->mii_media_active |= IFM_100_TX;
sc->mii_ticks = 0;
break;
case JMPHY_SSR_SPEED_10:
mii->mii_media_active |= IFM_10_T;
sc->mii_ticks = 0;
break;
default:
mii->mii_media_active |= IFM_NONE;
return;
}
if ((ssr & JMPHY_SSR_DUPLEX) != 0)
mii->mii_media_active |= IFM_FDX;
else
mii->mii_media_active |= IFM_HDX;
/* XXX Flow-control. */
#ifdef notyet
if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) {
if ((PHY_READ(sc, MII_100T2SR) & GTSR_MS_RES) != 0)
mii->mii_media_active |= IFM_ETH_MASTER;
}
#endif
}
static void
jmphy_reset(struct mii_softc *sc)
{
struct jmphy_softc *jsc;
int i;
jsc = (struct jmphy_softc *)sc;
/* Disable sleep mode. */
PHY_WRITE(sc, JMPHY_TMCTL,
PHY_READ(sc, JMPHY_TMCTL) & ~JMPHY_TMCTL_SLEEP_ENB);
PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_AUTOEN);
for (i = 0; i < 1000; i++) {
DELAY(1);
if ((PHY_READ(sc, MII_BMCR) & BMCR_RESET) == 0)
break;
}
}
static uint16_t
jmphy_anar(struct ifmedia_entry *ife)
{
uint16_t anar;
anar = 0;
switch (IFM_SUBTYPE(ife->ifm_media)) {
case IFM_AUTO:
anar |= ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10;
break;
case IFM_1000_T:
break;
case IFM_100_TX:
anar |= ANAR_TX | ANAR_TX_FD;
break;
case IFM_10_T:
anar |= ANAR_10 | ANAR_10_FD;
break;
default:
break;
}
return (anar);
}
static int
jmphy_auto(struct mii_softc *sc, struct ifmedia_entry *ife)
{
uint16_t anar, bmcr, gig;
gig = 0;
bmcr = PHY_READ(sc, MII_BMCR);
switch (IFM_SUBTYPE(ife->ifm_media)) {
case IFM_AUTO:
gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX;
break;
case IFM_1000_T:
gig |= GTCR_ADV_1000TFDX | GTCR_ADV_1000THDX;
break;
case IFM_100_TX:
case IFM_10_T:
break;
case IFM_NONE:
PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO | BMCR_PDOWN);
return (EJUSTRETURN);
default:
return (EINVAL);
}
if ((ife->ifm_media & IFM_LOOP) != 0)
bmcr |= BMCR_LOOP;
anar = jmphy_anar(ife);
/* XXX Always advertise pause capability. */
anar |= (3 << 10);
if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) {
#ifdef notyet
struct mii_data *mii;
mii = sc->mii_pdata;
if ((mii->mii_media.ifm_media & IFM_ETH_MASTER) != 0)
gig |= GTCR_MAN_MS | GTCR_MAN_ADV;
#endif
PHY_WRITE(sc, MII_100T2CR, gig);
}
PHY_WRITE(sc, MII_ANAR, anar | ANAR_CSMA);
PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_AUTOEN | BMCR_STARTNEG);
return (EJUSTRETURN);
}