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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/dev/mii/tlphy.c |
/* $NetBSD: tlphy.c,v 1.18 1999/05/14 11:40:28 drochner Exp $ */
/*-
* Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*-
* Copyright (c) 1997 Manuel Bouyer. 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 ``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 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: release/9.1.0/sys/dev/mii/tlphy.c 229093 2011-12-31 14:12:12Z hselasky $");
/*
* Driver for Texas Instruments's ThunderLAN PHYs
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/errno.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/malloc.h>
#include <machine/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/tlphyreg.h>
#include "miibus_if.h"
struct tlphy_softc {
struct mii_softc sc_mii; /* generic PHY */
int sc_need_acomp;
};
static int tlphy_probe(device_t);
static int tlphy_attach(device_t);
static device_method_t tlphy_methods[] = {
/* device interface */
DEVMETHOD(device_probe, tlphy_probe),
DEVMETHOD(device_attach, tlphy_attach),
DEVMETHOD(device_detach, mii_phy_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD_END
};
static devclass_t tlphy_devclass;
static driver_t tlphy_driver = {
"tlphy",
tlphy_methods,
sizeof(struct tlphy_softc)
};
DRIVER_MODULE(tlphy, miibus, tlphy_driver, tlphy_devclass, 0, 0);
static int tlphy_service(struct mii_softc *, struct mii_data *, int);
static int tlphy_auto(struct tlphy_softc *);
static void tlphy_acomp(struct tlphy_softc *);
static void tlphy_status(struct mii_softc *);
static const struct mii_phydesc tlphys[] = {
MII_PHY_DESC(TI, TLAN10T),
MII_PHY_END
};
static const struct mii_phy_funcs tlphy_funcs = {
tlphy_service,
tlphy_status,
mii_phy_reset
};
static int
tlphy_probe(device_t dev)
{
if (strcmp(device_get_name(device_get_parent(device_get_parent(dev))),
"tl") != 0)
return (ENXIO);
return (mii_phy_dev_probe(dev, tlphys, BUS_PROBE_DEFAULT));
}
static int
tlphy_attach(device_t dev)
{
device_t *devlist;
struct mii_softc *other, *sc_mii;
const char *sep = "";
int capmask, devs, i;
sc_mii = device_get_softc(dev);
mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &tlphy_funcs, 0);
/*
* Note that if we're on a device that also supports 100baseTX,
* we are not going to want to use the built-in 10baseT port,
* since there will be another PHY on the MII wired up to the
* UTP connector.
*/
capmask = BMSR_DEFCAPMASK;
if (sc_mii->mii_inst &&
device_get_children(sc_mii->mii_dev, &devlist, &devs) == 0) {
for (i = 0; i < devs; i++) {
if (devlist[i] != dev) {
other = device_get_softc(devlist[i]);
capmask &= ~other->mii_capabilities;
break;
}
}
free(devlist, M_TEMP);
}
PHY_RESET(sc_mii);
sc_mii->mii_capabilities = PHY_READ(sc_mii, MII_BMSR) & capmask;
#define ADD(m, c) \
ifmedia_add(&sc_mii->mii_pdata->mii_media, (m), (c), NULL)
#define PRINT(s) printf("%s%s", sep, s); sep = ", "
if ((sc_mii->mii_flags & (MIIF_MACPRIV0 | MIIF_MACPRIV1)) != 0 &&
(sc_mii->mii_capabilities & BMSR_MEDIAMASK) != 0)
device_printf(dev, " ");
if ((sc_mii->mii_flags & MIIF_MACPRIV0) != 0) {
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_2, 0, sc_mii->mii_inst),
0);
PRINT("10base2/BNC");
}
if ((sc_mii->mii_flags & MIIF_MACPRIV1) != 0) {
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, sc_mii->mii_inst),
0);
PRINT("10base5/AUI");
}
if ((sc_mii->mii_capabilities & BMSR_MEDIAMASK) != 0) {
printf("%s", sep);
mii_phy_add_media(sc_mii);
}
if ((sc_mii->mii_flags & (MIIF_MACPRIV0 | MIIF_MACPRIV1)) != 0 &&
(sc_mii->mii_capabilities & BMSR_MEDIAMASK) != 0)
printf("\n");
#undef ADD
#undef PRINT
MIIBUS_MEDIAINIT(sc_mii->mii_dev);
return (0);
}
static int
tlphy_service(struct mii_softc *self, struct mii_data *mii, int cmd)
{
struct tlphy_softc *sc = (struct tlphy_softc *)self;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
int reg;
if (sc->sc_need_acomp)
tlphy_acomp(sc);
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;
switch (IFM_SUBTYPE(ife->ifm_media)) {
case IFM_AUTO:
/*
* The ThunderLAN PHY doesn't self-configure after
* an autonegotiation cycle, so there's no such
* thing as "already in auto mode".
*/
(void)tlphy_auto(sc);
break;
case IFM_10_2:
case IFM_10_5:
PHY_WRITE(&sc->sc_mii, MII_BMCR, 0);
PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, CTRL_AUISEL);
DELAY(100000);
break;
default:
PHY_WRITE(&sc->sc_mii, MII_TLPHY_CTRL, 0);
DELAY(100000);
mii_phy_setmedia(&sc->sc_mii);
}
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)
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.
*
* XXX WHAT ABOUT CHECKING LINK ON THE BNC/AUI?!
*/
reg = PHY_READ(&sc->sc_mii, MII_BMSR) |
PHY_READ(&sc->sc_mii, MII_BMSR);
if (reg & BMSR_LINK)
break;
/*
* Only retry autonegotiation every 5 seconds.
*/
if (++sc->sc_mii.mii_ticks <= MII_ANEGTICKS)
break;
sc->sc_mii.mii_ticks = 0;
PHY_RESET(&sc->sc_mii);
(void)tlphy_auto(sc);
return (0);
}
/* Update the media status. */
PHY_STATUS(self);
/* Callback if something changed. */
mii_phy_update(&sc->sc_mii, cmd);
return (0);
}
static void
tlphy_status(struct mii_softc *self)
{
struct tlphy_softc *sc = (struct tlphy_softc *)self;
struct mii_data *mii = sc->sc_mii.mii_pdata;
int bmsr, bmcr, tlctrl;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
bmcr = PHY_READ(&sc->sc_mii, MII_BMCR);
if (bmcr & BMCR_ISO) {
mii->mii_media_active |= IFM_NONE;
mii->mii_media_status = 0;
return;
}
tlctrl = PHY_READ(&sc->sc_mii, MII_TLPHY_CTRL);
if (tlctrl & CTRL_AUISEL) {
mii->mii_media_status = 0;
mii->mii_media_active = mii->mii_media.ifm_cur->ifm_media;
return;
}
bmsr = PHY_READ(&sc->sc_mii, MII_BMSR) |
PHY_READ(&sc->sc_mii, MII_BMSR);
if (bmsr & BMSR_LINK)
mii->mii_media_status |= IFM_ACTIVE;
if (bmcr & BMCR_LOOP)
mii->mii_media_active |= IFM_LOOP;
/*
* Grr, braindead ThunderLAN PHY doesn't have any way to
* tell which media is actually active. (Note it also
* doesn't self-configure after autonegotiation.) We
* just have to report what's in the BMCR.
*/
if (bmcr & BMCR_FDX)
mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(self);
else
mii->mii_media_active |= IFM_HDX;
mii->mii_media_active |= IFM_10_T;
}
static int
tlphy_auto(struct tlphy_softc *sc)
{
int error;
switch ((error = mii_phy_auto(&sc->sc_mii))) {
case EIO:
/*
* Just assume we're not in full-duplex mode.
* XXX Check link and try AUI/BNC?
*/
PHY_WRITE(&sc->sc_mii, MII_BMCR, 0);
break;
case EJUSTRETURN:
/* Flag that we need to program when it completes. */
sc->sc_need_acomp = 1;
break;
default:
tlphy_acomp(sc);
}
return (error);
}
static void
tlphy_acomp(struct tlphy_softc *sc)
{
int aner, anlpar;
sc->sc_need_acomp = 0;
/*
* Grr, braindead ThunderLAN PHY doesn't self-configure
* after autonegotiation. We have to do it ourselves
* based on the link partner status.
*/
aner = PHY_READ(&sc->sc_mii, MII_ANER);
if (aner & ANER_LPAN) {
anlpar = PHY_READ(&sc->sc_mii, MII_ANLPAR) &
PHY_READ(&sc->sc_mii, MII_ANAR);
if (anlpar & ANAR_10_FD) {
PHY_WRITE(&sc->sc_mii, MII_BMCR, BMCR_FDX);
return;
}
}
PHY_WRITE(&sc->sc_mii, MII_BMCR, 0);
}