/*-
* Copyright (c) 2000
* Bill Paul <wpaul@ee.columbia.edu>. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
* 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 XaQti XMAC II's internal PHY. This is sort of
* like a 10/100 PHY, except the only thing we're really autoselecting
* here is full/half duplex. Speed is always 1000mbps.
*/
#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/xmphyreg.h>
#include "miibus_if.h"
static int xmphy_probe(device_t);
static int xmphy_attach(device_t);
static device_method_t xmphy_methods[] = {
/* device interface */
DEVMETHOD(device_probe, xmphy_probe),
DEVMETHOD(device_attach, xmphy_attach),
DEVMETHOD(device_detach, mii_phy_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
{ 0, 0 }
};
static devclass_t xmphy_devclass;
static driver_t xmphy_driver = {
"xmphy",
xmphy_methods,
sizeof(struct mii_softc)
};
DRIVER_MODULE(xmphy, miibus, xmphy_driver, xmphy_devclass, 0, 0);
static int xmphy_service(struct mii_softc *, struct mii_data *, int);
static void xmphy_status(struct mii_softc *);
static int xmphy_mii_phy_auto(struct mii_softc *);
static int
xmphy_probe(device_t dev)
{
struct mii_attach_args *ma;
ma = device_get_ivars(dev);
if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_xxXAQTI &&
MII_MODEL(ma->mii_id2) == MII_MODEL_XAQTI_XMACII) {
device_set_desc(dev, MII_STR_XAQTI_XMACII);
return(0);
}
if (MII_OUI(ma->mii_id1, ma->mii_id2) == MII_OUI_JATO &&
MII_MODEL(ma->mii_id2) == MII_MODEL_JATO_BASEX) {
device_set_desc(dev, MII_STR_JATO_BASEX);
return(0);
}
return(ENXIO);
}
static int
xmphy_attach(device_t dev)
{
struct mii_softc *sc;
struct mii_attach_args *ma;
struct mii_data *mii;
const char *sep = "";
sc = device_get_softc(dev);
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 = xmphy_service;
sc->mii_pdata = mii;
sc->mii_flags |= MIIF_NOISOLATE;
mii->mii_instance++;
#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
#define PRINT(s) printf("%s%s", sep, s); sep = ", "
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
BMCR_ISO);
#if 0
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
BMCR_LOOP|BMCR_S100);
#endif
mii_phy_reset(sc);
device_printf(dev, " ");
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, sc->mii_inst),
XMPHY_BMCR_FDX);
PRINT("1000baseSX");
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst), 0);
PRINT("1000baseSX-FDX");
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0);
PRINT("auto");
printf("\n");
#undef ADD
#undef PRINT
MIIBUS_MEDIAINIT(sc->mii_dev);
return(0);
}
static int
xmphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int reg;
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) {
reg = PHY_READ(sc, MII_BMCR);
PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
return (0);
}
/*
* If the interface is not up, don't do anything.
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
break;
switch (IFM_SUBTYPE(ife->ifm_media)) {
case IFM_AUTO:
#ifdef foo
/*
* If we're already in auto mode, just return.
*/
if (PHY_READ(sc, XMPHY_MII_BMCR) & XMPHY_BMCR_AUTOEN)
return (0);
#endif
(void) xmphy_mii_phy_auto(sc);
break;
case IFM_1000_SX:
mii_phy_reset(sc);
if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) {
PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_FDX);
PHY_WRITE(sc, XMPHY_MII_BMCR, XMPHY_BMCR_FDX);
} else {
PHY_WRITE(sc, XMPHY_MII_ANAR, XMPHY_ANAR_HDX);
PHY_WRITE(sc, XMPHY_MII_BMCR, 0);
}
break;
case IFM_100_T4:
case IFM_100_TX:
case IFM_10_T:
default:
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)
break;
/*
* Check to see if we have link. If we do, we don't
* need to restart the autonegotiation process. Read
* the BMSR twice in case it's latched.
*/
reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
if (reg & BMSR_LINK)
break;
/*
* Only retry autonegotiation every 5 seconds.
*/
if (++sc->mii_ticks <= 5)
break;
sc->mii_ticks = 0;
mii_phy_reset(sc);
xmphy_mii_phy_auto(sc);
return(0);
}
/* Update the media status. */
xmphy_status(sc);
/* Callback if something changed. */
mii_phy_update(sc, cmd);
return (0);
}
static void
xmphy_status(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
int bmsr, bmcr, anlpar;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
bmsr = PHY_READ(sc, XMPHY_MII_BMSR) |
PHY_READ(sc, XMPHY_MII_BMSR);
if (bmsr & XMPHY_BMSR_LINK)
mii->mii_media_status |= IFM_ACTIVE;
/* Do dummy read of extended status register. */
bmcr = PHY_READ(sc, XMPHY_MII_EXTSTS);
bmcr = PHY_READ(sc, XMPHY_MII_BMCR);
if (bmcr & XMPHY_BMCR_LOOP)
mii->mii_media_active |= IFM_LOOP;
if (bmcr & XMPHY_BMCR_AUTOEN) {
if ((bmsr & XMPHY_BMSR_ACOMP) == 0) {
if (bmsr & XMPHY_BMSR_LINK) {
mii->mii_media_active |= IFM_1000_SX|IFM_HDX;
return;
}
/* Erg, still trying, I guess... */
mii->mii_media_active |= IFM_NONE;
return;
}
mii->mii_media_active |= IFM_1000_SX;
anlpar = PHY_READ(sc, XMPHY_MII_ANAR) &
PHY_READ(sc, XMPHY_MII_ANLPAR);
if (anlpar & XMPHY_ANLPAR_FDX)
mii->mii_media_active |= IFM_FDX;
else
mii->mii_media_active |= IFM_HDX;
return;
}
mii->mii_media_active |= IFM_1000_SX;
if (bmcr & XMPHY_BMCR_FDX)
mii->mii_media_active |= IFM_FDX;
else
mii->mii_media_active |= IFM_HDX;
return;
}
static int
xmphy_mii_phy_auto(struct mii_softc *mii)
{
int anar = 0;
anar = PHY_READ(mii, XMPHY_MII_ANAR);
anar |= XMPHY_ANAR_FDX|XMPHY_ANAR_HDX;
PHY_WRITE(mii, XMPHY_MII_ANAR, anar);
DELAY(1000);
PHY_WRITE(mii, XMPHY_MII_BMCR,
XMPHY_BMCR_AUTOEN | XMPHY_BMCR_STARTNEG);
return (EJUSTRETURN);
}
