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freebsd-skq/sys/dev/mii/ip1000phy.c

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/*-
* Copyright (c) 2006, 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 IC Plus IP1000A/IP1001 10/100/1000 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/ip1000phyreg.h>
#include "miibus_if.h"
#include <machine/bus.h>
#include <dev/stge/if_stgereg.h>
static int ip1000phy_probe(device_t);
static int ip1000phy_attach(device_t);
struct ip1000phy_softc {
struct mii_softc mii_sc;
int model;
int revision;
};
static device_method_t ip1000phy_methods[] = {
/* device interface */
DEVMETHOD(device_probe, ip1000phy_probe),
DEVMETHOD(device_attach, ip1000phy_attach),
DEVMETHOD(device_detach, mii_phy_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
{ 0, 0 }
};
static devclass_t ip1000phy_devclass;
static driver_t ip1000phy_driver = {
"ip1000phy",
ip1000phy_methods,
sizeof (struct mii_softc)
};
DRIVER_MODULE(ip1000phy, miibus, ip1000phy_driver, ip1000phy_devclass, 0, 0);
static int ip1000phy_service(struct mii_softc *, struct mii_data *, int);
static void ip1000phy_status(struct mii_softc *);
static void ip1000phy_reset(struct mii_softc *);
static int ip1000phy_mii_phy_auto(struct mii_softc *);
static const struct mii_phydesc ip1000phys[] = {
MII_PHY_DESC(ICPLUS, IP1000A),
MII_PHY_DESC(ICPLUS, IP1001),
MII_PHY_END
};
static int
ip1000phy_probe(device_t dev)
{
return (mii_phy_dev_probe(dev, ip1000phys, BUS_PROBE_DEFAULT));
}
static int
ip1000phy_attach(device_t dev)
{
struct ip1000phy_softc *isc;
struct mii_softc *sc;
struct mii_attach_args *ma;
struct mii_data *mii;
isc = device_get_softc(dev);
sc = &isc->mii_sc;
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 = ip1000phy_service;
sc->mii_pdata = mii;
sc->mii_anegticks = MII_ANEGTICKS_GIGE;
sc->mii_flags |= MIIF_NOISOLATE;
mii->mii_instance++;
isc->model = MII_MODEL(ma->mii_id2);
isc->revision = MII_REV(ma->mii_id2);
device_printf(dev, " ");
#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
BMCR_ISO);
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst),
IP1000PHY_BMCR_10);
printf("10baseT, ");
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst),
IP1000PHY_BMCR_10 | IP1000PHY_BMCR_FDX);
printf("10baseT-FDX, ");
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst),
IP1000PHY_BMCR_100);
printf("100baseTX, ");
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst),
IP1000PHY_BMCR_100 | IP1000PHY_BMCR_FDX);
printf("100baseTX-FDX, ");
/* 1000baseT half-duplex, really supported? */
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0, sc->mii_inst),
IP1000PHY_BMCR_1000);
printf("1000baseTX, ");
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX, sc->mii_inst),
IP1000PHY_BMCR_1000 | IP1000PHY_BMCR_FDX);
printf("1000baseTX-FDX, ");
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0);
printf("auto\n");
#undef ADD
ip1000phy_reset(sc);
MIIBUS_MEDIAINIT(sc->mii_dev);
return(0);
}
static int
ip1000phy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
uint32_t gig, reg, speed;
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, IP1000PHY_MII_BMCR);
PHY_WRITE(sc, IP1000PHY_MII_BMCR,
reg | IP1000PHY_BMCR_ISO);
return (0);
}
/*
* If the interface is not up, don't do anything.
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0) {
break;
}
ip1000phy_reset(sc);
switch (IFM_SUBTYPE(ife->ifm_media)) {
case IFM_AUTO:
(void)ip1000phy_mii_phy_auto(sc);
goto done;
break;
case IFM_1000_T:
/*
* XXX
* Manual 1000baseT setting doesn't seem to work.
*/
speed = IP1000PHY_BMCR_1000;
break;
case IFM_100_TX:
speed = IP1000PHY_BMCR_100;
break;
case IFM_10_T:
speed = IP1000PHY_BMCR_10;
break;
default:
return (EINVAL);
}
if (((ife->ifm_media & IFM_GMASK) & IFM_FDX) != 0) {
speed |= IP1000PHY_BMCR_FDX;
gig = IP1000PHY_1000CR_1000T_FDX;
} else
gig = IP1000PHY_1000CR_1000T;
PHY_WRITE(sc, IP1000PHY_MII_1000CR, 0);
PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed);
if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T)
break;
PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig);
PHY_WRITE(sc, IP1000PHY_MII_BMCR, speed);
/*
* 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, IP1000PHY_MII_1000CR, gig |
IP1000PHY_1000CR_MASTER |
IP1000PHY_1000CR_MMASTER |
IP1000PHY_1000CR_MANUAL);
else
PHY_WRITE(sc, IP1000PHY_MII_1000CR, gig |
IP1000PHY_1000CR_MASTER |
IP1000PHY_1000CR_MANUAL);
done:
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) {
sc->mii_ticks = 0;
break;
}
/*
* check for link.
*/
reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
if (reg & BMSR_LINK) {
sc->mii_ticks = 0;
break;
}
/* Announce link loss right after it happens */
if (sc->mii_ticks++ == 0)
break;
/*
* Only retry autonegotiation every mii_anegticks seconds.
*/
if (sc->mii_ticks <= sc->mii_anegticks)
break;
sc->mii_ticks = 0;
ip1000phy_mii_phy_auto(sc);
break;
}
/* Update the media status. */
ip1000phy_status(sc);
/* Callback if something changed. */
mii_phy_update(sc, cmd);
return (0);
}
static void
ip1000phy_status(struct mii_softc *sc)
{
struct ip1000phy_softc *isc;
struct mii_data *mii = sc->mii_pdata;
uint32_t bmsr, bmcr, stat;
uint32_t ar, lpar;
isc = (struct ip1000phy_softc *)sc;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
bmsr = PHY_READ(sc, IP1000PHY_MII_BMSR) |
PHY_READ(sc, IP1000PHY_MII_BMSR);
if ((bmsr & IP1000PHY_BMSR_LINK) != 0)
mii->mii_media_status |= IFM_ACTIVE;
bmcr = PHY_READ(sc, IP1000PHY_MII_BMCR);
if ((bmcr & IP1000PHY_BMCR_LOOP) != 0)
mii->mii_media_active |= IFM_LOOP;
if ((bmcr & IP1000PHY_BMCR_AUTOEN) != 0) {
if ((bmsr & IP1000PHY_BMSR_ANEGCOMP) == 0) {
/* Erg, still trying, I guess... */
mii->mii_media_active |= IFM_NONE;
return;
}
}
if (isc->model == MII_MODEL_ICPLUS_IP1001) {
stat = PHY_READ(sc, IP1000PHY_LSR);
switch (stat & IP1000PHY_LSR_SPEED_MASK) {
case IP1000PHY_LSR_SPEED_10:
mii->mii_media_active |= IFM_10_T;
break;
case IP1000PHY_LSR_SPEED_100:
mii->mii_media_active |= IFM_100_TX;
break;
case IP1000PHY_LSR_SPEED_1000:
mii->mii_media_active |= IFM_1000_T;
break;
}
if ((stat & IP1000PHY_LSR_FULL_DUPLEX) != 0)
mii->mii_media_active |= IFM_FDX;
else
mii->mii_media_active |= IFM_HDX;
} else {
stat = PHY_READ(sc, STGE_PhyCtrl);
switch (PC_LinkSpeed(stat)) {
case PC_LinkSpeed_Down:
mii->mii_media_active |= IFM_NONE;
return;
case PC_LinkSpeed_10:
mii->mii_media_active |= IFM_10_T;
break;
case PC_LinkSpeed_100:
mii->mii_media_active |= IFM_100_TX;
break;
case PC_LinkSpeed_1000:
mii->mii_media_active |= IFM_1000_T;
break;
}
if ((stat & PC_PhyDuplexStatus) != 0)
mii->mii_media_active |= IFM_FDX;
else
mii->mii_media_active |= IFM_HDX;
}
ar = PHY_READ(sc, IP1000PHY_MII_ANAR);
lpar = PHY_READ(sc, IP1000PHY_MII_ANLPAR);
/*
* FLAG0 : Rx flow-control
* FLAG1 : Tx flow-control
*/
if ((ar & IP1000PHY_ANAR_PAUSE) && (lpar & IP1000PHY_ANLPAR_PAUSE))
mii->mii_media_active |= IFM_FLAG0 | IFM_FLAG1;
else if (!(ar & IP1000PHY_ANAR_PAUSE) && (ar & IP1000PHY_ANAR_APAUSE) &&
(lpar & IP1000PHY_ANLPAR_PAUSE) && (lpar & IP1000PHY_ANLPAR_APAUSE))
mii->mii_media_active |= IFM_FLAG1;
else if ((ar & IP1000PHY_ANAR_PAUSE) && (ar & IP1000PHY_ANAR_APAUSE) &&
!(lpar & IP1000PHY_ANLPAR_PAUSE) &&
(lpar & IP1000PHY_ANLPAR_APAUSE)) {
mii->mii_media_active |= IFM_FLAG0;
}
/*
* FLAG2 : local PHY resolved to MASTER
*/
if ((mii->mii_media_active & IFM_1000_T) != 0) {
stat = PHY_READ(sc, IP1000PHY_MII_1000SR);
if ((stat & IP1000PHY_1000SR_MASTER) != 0)
mii->mii_media_active |= IFM_FLAG2;
}
}
static int
ip1000phy_mii_phy_auto(struct mii_softc *mii)
{
uint32_t reg;
PHY_WRITE(mii, IP1000PHY_MII_ANAR,
IP1000PHY_ANAR_10T | IP1000PHY_ANAR_10T_FDX |
IP1000PHY_ANAR_100TX | IP1000PHY_ANAR_100TX_FDX |
IP1000PHY_ANAR_PAUSE | IP1000PHY_ANAR_APAUSE);
reg = IP1000PHY_1000CR_1000T | IP1000PHY_1000CR_1000T_FDX;
reg |= IP1000PHY_1000CR_MASTER;
PHY_WRITE(mii, IP1000PHY_MII_1000CR, reg);
PHY_WRITE(mii, IP1000PHY_MII_BMCR, (IP1000PHY_BMCR_FDX |
IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_STARTNEG));
return (EJUSTRETURN);
}
static void
ip1000phy_load_dspcode(struct mii_softc *sc)
{
PHY_WRITE(sc, 31, 0x0001);
PHY_WRITE(sc, 27, 0x01e0);
PHY_WRITE(sc, 31, 0x0002);
PHY_WRITE(sc, 27, 0xeb8e);
PHY_WRITE(sc, 31, 0x0000);
PHY_WRITE(sc, 30, 0x005e);
PHY_WRITE(sc, 9, 0x0700);
DELAY(50);
}
static void
ip1000phy_reset(struct mii_softc *sc)
{
struct ip1000phy_softc *isc;
struct stge_softc *stge_sc;
struct mii_data *mii;
uint32_t reg;
isc = (struct ip1000phy_softc *)sc;
mii_phy_reset(sc);
/* clear autoneg/full-duplex as we don't want it after reset */
reg = PHY_READ(sc, IP1000PHY_MII_BMCR);
reg &= ~(IP1000PHY_BMCR_AUTOEN | IP1000PHY_BMCR_FDX);
PHY_WRITE(sc, MII_BMCR, reg);
mii = sc->mii_pdata;
/*
* XXX There should be more general way to pass PHY specific
* data via mii interface.
*/
if (isc->model == MII_MODEL_ICPLUS_IP1000A &&
strcmp(mii->mii_ifp->if_dname, "stge") == 0) {
stge_sc = mii->mii_ifp->if_softc;
if (stge_sc->sc_rev >= 0x40 && stge_sc->sc_rev <= 0x4e)
ip1000phy_load_dspcode(sc);
}
}
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