471 lines
12 KiB
C
471 lines
12 KiB
C
/*
|
|
* Copyright (c) 2001 Wind River Systems
|
|
* Copyright (c) 2001
|
|
* Bill Paul <wpaul@bsdi.com>. 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* Driver for the National Semiconductor DP83891 and DP83861
|
|
* 10/100/1000 PHYs.
|
|
* Datasheet available at: http://www.national.com/ds/DP/DP83861.pdf
|
|
*
|
|
* The DP83891 is the older NatSemi gigE PHY which isn't being sold
|
|
* anymore. The DP83861 is its replacement, which is an 'enhanced'
|
|
* firmware driven component. The major difference between the
|
|
* two is that the 83891 can't generate interrupts, while the
|
|
* 83861 can. (I think it wasn't originally designed to do this, but
|
|
* it can now thanks to firmware updates.) The 83861 also allows
|
|
* access to its internal RAM via indirect register access.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/bus.h>
|
|
|
|
#include <machine/clock.h>
|
|
|
|
#include <net/if.h>
|
|
#include <net/if_media.h>
|
|
|
|
#include <dev/mii/mii.h>
|
|
#include <dev/mii/miivar.h>
|
|
#include <dev/mii/miidevs.h>
|
|
|
|
#include <dev/mii/nsgphyreg.h>
|
|
|
|
#include "miibus_if.h"
|
|
|
|
#if !defined(lint)
|
|
static const char rcsid[] =
|
|
"$FreeBSD$";
|
|
#endif
|
|
|
|
static int nsgphy_probe (device_t);
|
|
static int nsgphy_attach (device_t);
|
|
static int nsgphy_detach (device_t);
|
|
|
|
static device_method_t nsgphy_methods[] = {
|
|
/* device interface */
|
|
DEVMETHOD(device_probe, nsgphy_probe),
|
|
DEVMETHOD(device_attach, nsgphy_attach),
|
|
DEVMETHOD(device_detach, nsgphy_detach),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static devclass_t nsgphy_devclass;
|
|
|
|
static driver_t nsgphy_driver = {
|
|
"nsgphy",
|
|
nsgphy_methods,
|
|
sizeof(struct mii_softc)
|
|
};
|
|
|
|
DRIVER_MODULE(nsgphy, miibus, nsgphy_driver, nsgphy_devclass, 0, 0);
|
|
|
|
static int nsgphy_service(struct mii_softc *, struct mii_data *,int);
|
|
static void nsgphy_status(struct mii_softc *);
|
|
static int nsgphy_mii_phy_auto(struct mii_softc *, int);
|
|
extern void mii_phy_auto_timeout(void *);
|
|
|
|
static int
|
|
nsgphy_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_NATSEMI) {
|
|
if (MII_MODEL(ma->mii_id2) == MII_MODEL_NATSEMI_DP83891) {
|
|
device_set_desc(dev, MII_STR_NATSEMI_DP83891);
|
|
return(0);
|
|
}
|
|
if (MII_MODEL(ma->mii_id2) == MII_MODEL_NATSEMI_DP83861) {
|
|
device_set_desc(dev, MII_STR_NATSEMI_DP83861);
|
|
return(0);
|
|
}
|
|
}
|
|
|
|
return(ENXIO);
|
|
}
|
|
|
|
static int
|
|
nsgphy_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 = nsgphy_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_T, IFM_FDX, sc->mii_inst),
|
|
BMCR_S1000|BMCR_FDX);
|
|
PRINT("1000baseTX-FDX");
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0, sc->mii_inst),
|
|
BMCR_S1000);
|
|
PRINT("1000baseTX");
|
|
sc->mii_capabilities = (PHY_READ(sc, MII_BMSR) |
|
|
(BMSR_10TFDX|BMSR_10THDX)) & ma->mii_capmask;
|
|
if (sc->mii_capabilities & BMSR_EXTSTAT)
|
|
sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst),
|
|
BMCR_S100|BMCR_FDX);
|
|
PRINT("100baseTX-FDX");
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst), BMCR_S100);
|
|
PRINT("100baseTX");
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst),
|
|
BMCR_S10|BMCR_FDX);
|
|
PRINT("10baseT-FDX");
|
|
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst), BMCR_S10);
|
|
PRINT("10baseT");
|
|
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
|
|
nsgphy_detach(device_t dev)
|
|
{
|
|
struct mii_softc *sc;
|
|
struct mii_data *mii;
|
|
|
|
sc = device_get_softc(dev);
|
|
mii = device_get_softc(device_get_parent(dev));
|
|
if (sc->mii_flags & MIIF_DOINGAUTO)
|
|
untimeout(mii_phy_auto_timeout, sc, sc->mii_auto_ch);
|
|
sc->mii_dev = NULL;
|
|
LIST_REMOVE(sc, mii_list);
|
|
|
|
return(0);
|
|
}
|
|
|
|
static int
|
|
nsgphy_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, MII_BMCR) & BMCR_AUTOEN)
|
|
return (0);
|
|
#endif
|
|
(void) nsgphy_mii_phy_auto(sc, 0);
|
|
break;
|
|
case IFM_1000_T:
|
|
if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) {
|
|
PHY_WRITE(sc, MII_BMCR,
|
|
BMCR_FDX|BMCR_SPEED1);
|
|
} else {
|
|
PHY_WRITE(sc, MII_BMCR,
|
|
BMCR_SPEED1);
|
|
}
|
|
PHY_WRITE(sc, MII_ANAR, ANAR_CSMA);
|
|
|
|
/*
|
|
* When setting the link manually, one side must
|
|
* be the master and the other the slave. However
|
|
* ifmedia doesn't give us a good way to specify
|
|
* this, so we fake it by using one of the LINK
|
|
* flags. If LINK0 is set, we program the PHY to
|
|
* be a master, otherwise it's a slave.
|
|
*/
|
|
if ((mii->mii_ifp->if_flags & IFF_LINK0)) {
|
|
PHY_WRITE(sc, MII_100T2CR,
|
|
GTCR_MAN_MS|GTCR_ADV_MS);
|
|
} else {
|
|
PHY_WRITE(sc, MII_100T2CR, GTCR_MAN_MS);
|
|
}
|
|
break;
|
|
case IFM_100_T4:
|
|
/*
|
|
* XXX Not supported as a manual setting right now.
|
|
*/
|
|
return (EINVAL);
|
|
case IFM_NONE:
|
|
PHY_WRITE(sc, MII_BMCR, BMCR_ISO|BMCR_PDOWN);
|
|
break;
|
|
default:
|
|
/*
|
|
* BMCR data is stored in the ifmedia entry.
|
|
*/
|
|
PHY_WRITE(sc, MII_ANAR, mii_anar(ife->ifm_media));
|
|
PHY_WRITE(sc, MII_BMCR, ife->ifm_data);
|
|
break;
|
|
}
|
|
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.
|
|
*/
|
|
reg = PHY_READ(sc, NSGPHY_MII_PHYSUP);
|
|
if (reg & NSGPHY_PHYSUP_LNKSTS)
|
|
break;
|
|
|
|
/*
|
|
* Only retry autonegotiation every 5 seconds.
|
|
* Actually, for gigE PHYs, we should wait longer, since
|
|
* 5 seconds is the mimimum time the documentation
|
|
* says to wait for a 1000mbps link to be established.
|
|
*/
|
|
if (++sc->mii_ticks != 10)
|
|
return (0);
|
|
|
|
sc->mii_ticks = 0;
|
|
|
|
mii_phy_reset(sc);
|
|
if (nsgphy_mii_phy_auto(sc, 0) == EJUSTRETURN)
|
|
return(0);
|
|
break;
|
|
}
|
|
|
|
/* Update the media status. */
|
|
nsgphy_status(sc);
|
|
|
|
/* Callback if something changed. */
|
|
mii_phy_update(sc, cmd);
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
nsgphy_status(struct mii_softc *sc)
|
|
{
|
|
struct mii_data *mii = sc->mii_pdata;
|
|
int bmsr, bmcr, physup, anlpar, gstat;
|
|
|
|
mii->mii_media_status = IFM_AVALID;
|
|
mii->mii_media_active = IFM_ETHER;
|
|
|
|
bmsr = PHY_READ(sc, MII_BMSR);
|
|
|
|
physup = PHY_READ(sc, NSGPHY_MII_PHYSUP);
|
|
|
|
if (physup & NSGPHY_PHYSUP_LNKSTS)
|
|
mii->mii_media_status |= IFM_ACTIVE;
|
|
|
|
bmcr = PHY_READ(sc, MII_BMCR);
|
|
|
|
if (bmcr & BMCR_LOOP)
|
|
mii->mii_media_active |= IFM_LOOP;
|
|
|
|
if (bmcr & BMCR_AUTOEN) {
|
|
/*
|
|
* The media status bits are only valid if autonegotiation
|
|
* has completed (or it's disabled).
|
|
*/
|
|
if ((bmsr & BMSR_ACOMP) == 0) {
|
|
/* Erg, still trying, I guess... */
|
|
mii->mii_media_active |= IFM_NONE;
|
|
return;
|
|
}
|
|
anlpar = PHY_READ(sc, MII_ANLPAR);
|
|
gstat = PHY_READ(sc, MII_100T2SR);
|
|
if (gstat & GTSR_LP_1000TFDX)
|
|
mii->mii_media_active |= IFM_1000_T|IFM_FDX;
|
|
else if (gstat & GTSR_LP_1000THDX)
|
|
mii->mii_media_active |= IFM_1000_T|IFM_HDX;
|
|
else if (anlpar & ANLPAR_T4)
|
|
mii->mii_media_active |= IFM_100_T4;
|
|
else if (anlpar & ANLPAR_TX_FD)
|
|
mii->mii_media_active |= IFM_100_TX|IFM_FDX;
|
|
else if (anlpar & ANLPAR_TX)
|
|
mii->mii_media_active |= IFM_100_TX;
|
|
else if (anlpar & ANLPAR_10_FD)
|
|
mii->mii_media_active |= IFM_10_T|IFM_FDX;
|
|
else if (anlpar & ANLPAR_10)
|
|
mii->mii_media_active |= IFM_10_T|IFM_HDX;
|
|
else
|
|
mii->mii_media_active |= IFM_NONE;
|
|
return;
|
|
}
|
|
|
|
switch(bmcr & (BMCR_SPEED1|BMCR_SPEED0)) {
|
|
case BMCR_S1000:
|
|
mii->mii_media_active |= IFM_1000_T;
|
|
break;
|
|
case BMCR_S100:
|
|
mii->mii_media_active |= IFM_100_TX;
|
|
break;
|
|
case BMCR_S10:
|
|
mii->mii_media_active |= IFM_10_T;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (bmcr & BMCR_FDX)
|
|
mii->mii_media_active |= IFM_FDX;
|
|
else
|
|
mii->mii_media_active |= IFM_HDX;
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
static int
|
|
nsgphy_mii_phy_auto(struct mii_softc *mii, int waitfor)
|
|
{
|
|
int bmsr, ktcr = 0, i;
|
|
|
|
if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) {
|
|
mii_phy_reset(mii);
|
|
PHY_WRITE(mii, MII_BMCR, 0);
|
|
DELAY(1000);
|
|
ktcr = PHY_READ(mii, MII_100T2CR);
|
|
PHY_WRITE(mii, MII_100T2CR, ktcr |
|
|
(GTCR_ADV_1000TFDX|GTCR_ADV_1000THDX));
|
|
ktcr = PHY_READ(mii, MII_100T2CR);
|
|
DELAY(1000);
|
|
PHY_WRITE(mii, MII_ANAR,
|
|
BMSR_MEDIA_TO_ANAR(mii->mii_capabilities) | ANAR_CSMA);
|
|
DELAY(1000);
|
|
PHY_WRITE(mii, MII_BMCR,
|
|
BMCR_AUTOEN | BMCR_STARTNEG);
|
|
}
|
|
|
|
if (waitfor) {
|
|
/* Wait 500ms for it to complete. */
|
|
for (i = 0; i < 500; i++) {
|
|
if ((bmsr = PHY_READ(mii, MII_BMSR)) & BMSR_ACOMP)
|
|
return (0);
|
|
DELAY(1000);
|
|
#if 0
|
|
if ((bmsr & BMSR_ACOMP) == 0)
|
|
printf("%s: autonegotiation failed to complete\n",
|
|
mii->mii_dev.dv_xname);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Don't need to worry about clearing MIIF_DOINGAUTO.
|
|
* If that's set, a timeout is pending, and it will
|
|
* clear the flag.
|
|
*/
|
|
return (EIO);
|
|
}
|
|
|
|
/*
|
|
* Just let it finish asynchronously. This is for the benefit of
|
|
* the tick handler driving autonegotiation. Don't want 500ms
|
|
* delays all the time while the system is running!
|
|
*/
|
|
if ((mii->mii_flags & MIIF_DOINGAUTO) == 0) {
|
|
mii->mii_flags |= MIIF_DOINGAUTO;
|
|
mii->mii_auto_ch = timeout(mii_phy_auto_timeout, mii, hz >> 1);
|
|
}
|
|
return (EJUSTRETURN);
|
|
}
|