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freebsd-nq/sys/dev/mii/jmphy.c
Gleb Smirnoff 61a3ac6e27 The MII layer shouldn't care about administrative status of an 
interface. Make MII drivers forget about 'struct ifnet'.

Later plan is to provide an administrative downcall from ifnet
layer into drivers, to inform them about administrative status
change. If someone thinks that processing MII events for an
administratively down interface is a big problem, then drivers
would turn MII processing off.

The following MII drivers do evil things, like strcmp() on
driver name, so they still need knowledge of ifnet and thus
include if_var.h. They all need to be fixed:

sys/dev/mii/brgphy.c
sys/dev/mii/e1000phy.c
sys/dev/mii/ip1000phy.c
sys/dev/mii/jmphy.c
sys/dev/mii/nsphy.c
sys/dev/mii/rgephy.c
sys/dev/mii/truephy.c

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2013-10-26 18:40:17 +00:00

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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_var.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_setmedia(struct mii_softc *, struct ifmedia_entry *);
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),
DEVMETHOD_END
};
static devclass_t jmphy_devclass;
static driver_t jmphy_driver = {
"jmphy",
jmphy_methods,
sizeof(struct mii_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 const struct mii_phy_funcs jmphy_funcs = {
jmphy_service,
jmphy_status,
jmphy_reset
};
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 mii_attach_args *ma;
u_int flags;
ma = device_get_ivars(dev);
flags = 0;
if (strcmp(ma->mii_data->mii_ifp->if_dname, "jme") == 0 &&
(miibus_get_flags(dev) & MIIF_MACPRIV0) != 0)
flags |= MIIF_PHYPRIV0;
mii_phy_dev_attach(dev, flags, &jmphy_funcs, 1);
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 (jmphy_setmedia(sc, ife) != EJUSTRETURN)
return (EINVAL);
break;
case MII_TICK:
/*
* 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;
(void)jmphy_setmedia(sc, ife);
break;
}
/* Update the media status. */
PHY_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 | mii_phy_flowstatus(sc);
else
mii->mii_media_active |= IFM_HDX;
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;
}
}
static void
jmphy_reset(struct mii_softc *sc)
{
uint16_t t2cr, val;
int i;
/* 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;
}
/* Perform vendor recommended PHY calibration. */
if ((sc->mii_flags & MIIF_PHYPRIV0) != 0) {
/* Select PHY test mode 1. */
t2cr = PHY_READ(sc, MII_100T2CR);
t2cr &= ~GTCR_TEST_MASK;
t2cr |= 0x2000;
PHY_WRITE(sc, MII_100T2CR, t2cr);
/* Apply calibration patch. */
PHY_WRITE(sc, JMPHY_SPEC_ADDR, JMPHY_SPEC_ADDR_READ |
JMPHY_EXT_COMM_2);
val = PHY_READ(sc, JMPHY_SPEC_DATA);
val &= ~0x0002;
val |= 0x0010 | 0x0001;
PHY_WRITE(sc, JMPHY_SPEC_DATA, val);
PHY_WRITE(sc, JMPHY_SPEC_ADDR, JMPHY_SPEC_ADDR_WRITE |
JMPHY_EXT_COMM_2);
/* XXX 20ms to complete recalibration. */
DELAY(20 * 1000);
PHY_READ(sc, MII_100T2CR);
PHY_WRITE(sc, JMPHY_SPEC_ADDR, JMPHY_SPEC_ADDR_READ |
JMPHY_EXT_COMM_2);
val = PHY_READ(sc, JMPHY_SPEC_DATA);
val &= ~(0x0001 | 0x0002 | 0x0010);
PHY_WRITE(sc, JMPHY_SPEC_DATA, val);
PHY_WRITE(sc, JMPHY_SPEC_ADDR, JMPHY_SPEC_ADDR_WRITE |
JMPHY_EXT_COMM_2);
/* Disable PHY test mode. */
PHY_READ(sc, MII_100T2CR);
t2cr &= ~GTCR_TEST_MASK;
PHY_WRITE(sc, MII_100T2CR, t2cr);
}
}
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_setmedia(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);
}
anar = jmphy_anar(ife);
if ((IFM_SUBTYPE(ife->ifm_media) == IFM_AUTO ||
(ife->ifm_media & IFM_FDX) != 0) &&
((ife->ifm_media & IFM_FLOW) != 0 ||
(sc->mii_flags & MIIF_FORCEPAUSE) != 0))
anar |= ANAR_PAUSE_TOWARDS;
if ((sc->mii_flags & MIIF_HAVE_GTCR) != 0) {
if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
gig |= GTCR_MAN_MS;
if ((ife->ifm_media & IFM_ETH_MASTER) != 0)
gig |= GTCR_ADV_MS;
}
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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