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freebsd-nq/sys/dev/mii/jmphy.c
Marius Strobl 8e5d93dbb4 Convert the PHY drivers to honor the mii_flags passed down and convert 
the NIC drivers as well as the PHY drivers to take advantage of the
mii_attach() introduced in r213878 to get rid of certain hacks. For
the most part these were:
- Artificially limiting miibus_{read,write}reg methods to certain PHY
  addresses; we now let mii_attach() only probe the PHY at the desired
  address(es) instead.
- PHY drivers setting MIIF_* flags based on the NIC driver they hang
  off from, partly even based on grabbing and using the softc of the
  parent; we now pass these flags down from the NIC to the PHY drivers
  via mii_attach(). This got us rid of all such hacks except those of
  brgphy() in combination with bce(4) and bge(4), which is way beyond
  what can be expressed with simple flags.

While at it, I took the opportunity to change the NIC drivers to pass
up the error returned by mii_attach() (previously by mii_phy_probe())
and unify the error message used in this case where and as appropriate
as mii_attach() actually can fail for a number of reasons, not just
because of no PHY(s) being present at the expected address(es).

Reviewed by:	jhb, yongari
2010-10-15 14:52:11 +00:00

357 lines
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/*-
* 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 = ma->mii_data;
LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
sc->mii_flags = miibus_get_flags(dev);
sc->mii_inst = mii->mii_instance++;
sc->mii_phy = ma->mii_phyno;
sc->mii_service = jmphy_service;
sc->mii_pdata = mii;
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;
switch (cmd) {
case MII_POLLSTAT:
break;
case MII_MEDIACHG:
/*
* 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:
/*
* 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);
}
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