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freebsd-skq/sys/dev/mii/e1000phy.c
yongari 06e624317c Some 88E1149 PHY's page select is initialized to point to other 
bank instead of copper/fiber bank which in turn resulted in
wrong registers were accessed during PHY operation. It is
believed that page 0 should be used for copper PHY so reinitialize
E1000_EADR to select default copper PHY.
This fixes link establishment issue of nfe(4) on Sun Fire X4140.

OpenBSD also has similimar patch but they just reset the E1000_EADR
register to page 0. However some Marvell PHYs((88E3082, 88E1000)
don't have the extended address register and the meaning of the
register is quite different for each PHY model. So selecting copper
PHY is limited to 88E1149 PHY which seems to be the only one that
exhibits link establishment problem. If parent device know the type
of PHY(either copper or fiber) that information should be notified
to PHY driver but there is no good way to pass this information yet.

Reported by:	thompsa
Reviewed by:	thompsa
2008-10-17 05:26:51 +00:00

544 lines
15 KiB
C
Raw Blame History

/*-
* Principal Author: Parag Patel
* Copyright (c) 2001
* 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.
*
* Additonal Copyright (c) 2001 by Traakan Software under same licence.
* Secondary Author: Matthew Jacob
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* driver for the Marvell 88E1000 series external 1000/100/10-BT PHY.
*/
/*
* Support added for the Marvell 88E1011 (Alaska) 1000/100/10baseTX and
* 1000baseSX PHY.
* Nathan Binkert <nate@openbsd.org>
* Jung-uk Kim <jkim@niksun.com>
*/
#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/e1000phyreg.h>
#include "miibus_if.h"
static int e1000phy_probe(device_t);
static int e1000phy_attach(device_t);
struct e1000phy_softc {
struct mii_softc mii_sc;
int mii_model;
};
static device_method_t e1000phy_methods[] = {
/* device interface */
DEVMETHOD(device_probe, e1000phy_probe),
DEVMETHOD(device_attach, e1000phy_attach),
DEVMETHOD(device_detach, mii_phy_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
{ 0, 0 }
};
static devclass_t e1000phy_devclass;
static driver_t e1000phy_driver = {
"e1000phy",
e1000phy_methods,
sizeof(struct e1000phy_softc)
};
DRIVER_MODULE(e1000phy, miibus, e1000phy_driver, e1000phy_devclass, 0, 0);
static int e1000phy_service(struct mii_softc *, struct mii_data *, int);
static void e1000phy_status(struct mii_softc *);
static void e1000phy_reset(struct mii_softc *);
static int e1000phy_mii_phy_auto(struct e1000phy_softc *);
static const struct mii_phydesc e1000phys[] = {
MII_PHY_DESC(MARVELL, E1000),
MII_PHY_DESC(MARVELL, E1011),
MII_PHY_DESC(MARVELL, E1000_3),
MII_PHY_DESC(MARVELL, E1000S),
MII_PHY_DESC(MARVELL, E1000_5),
MII_PHY_DESC(MARVELL, E1000_6),
MII_PHY_DESC(MARVELL, E3082),
MII_PHY_DESC(MARVELL, E1112),
MII_PHY_DESC(MARVELL, E1149),
MII_PHY_DESC(MARVELL, E1111),
MII_PHY_DESC(MARVELL, E1116),
MII_PHY_DESC(MARVELL, E1116R),
MII_PHY_DESC(MARVELL, E1118),
MII_PHY_DESC(xxMARVELL, E1000),
MII_PHY_DESC(xxMARVELL, E1011),
MII_PHY_DESC(xxMARVELL, E1000_3),
MII_PHY_DESC(xxMARVELL, E1000_5),
MII_PHY_DESC(xxMARVELL, E1111),
MII_PHY_END
};
static int
e1000phy_probe(device_t dev)
{
return (mii_phy_dev_probe(dev, e1000phys, BUS_PROBE_DEFAULT));
}
static int
e1000phy_attach(device_t dev)
{
struct e1000phy_softc *esc;
struct mii_softc *sc;
struct mii_attach_args *ma;
struct mii_data *mii;
int fast_ether;
esc = device_get_softc(dev);
sc = &esc->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 = e1000phy_service;
sc->mii_pdata = mii;
sc->mii_anegticks = MII_ANEGTICKS_GIGE;
mii->mii_instance++;
fast_ether = 0;
esc->mii_model = MII_MODEL(ma->mii_id2);
switch (esc->mii_model) {
case MII_MODEL_MARVELL_E1011:
case MII_MODEL_MARVELL_E1112:
if (PHY_READ(sc, E1000_ESSR) & E1000_ESSR_FIBER_LINK)
sc->mii_flags |= MIIF_HAVEFIBER;
break;
case MII_MODEL_MARVELL_E1149:
/*
* Some 88E1149 PHY's page select is initialized to
* point to other bank instead of copper/fiber bank
* which in turn resulted in wrong registers were
* accessed during PHY operation. It is believed that
* page 0 should be used for copper PHY so reinitialize
* E1000_EADR to select default copper PHY. If parent
* device know the type of PHY(either copper or fiber),
* that information should be used to select default
* type of PHY.
*/
PHY_WRITE(sc, E1000_EADR, 0);
break;
case MII_MODEL_MARVELL_E3082:
/* 88E3082 10/100 Fast Ethernet PHY. */
sc->mii_anegticks = MII_ANEGTICKS;
fast_ether = 1;
break;
}
e1000phy_reset(sc);
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),
E1000_CR_ISOLATE);
if ((sc->mii_flags & MIIF_HAVEFIBER) == 0) {
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst),
E1000_CR_SPEED_10);
printf("10baseT, ");
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst),
E1000_CR_SPEED_10 | E1000_CR_FULL_DUPLEX);
printf("10baseT-FDX, ");
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst),
E1000_CR_SPEED_100);
printf("100baseTX, ");
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst),
E1000_CR_SPEED_100 | E1000_CR_FULL_DUPLEX);
printf("100baseTX-FDX, ");
if (fast_ether == 0) {
/*
* 1000BT-simplex not supported; driver must ignore
* this entry, but it must be present in order to
* manually set full-duplex.
*/
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0,
sc->mii_inst), E1000_CR_SPEED_1000);
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX,
sc->mii_inst),
E1000_CR_SPEED_1000 | E1000_CR_FULL_DUPLEX);
printf("1000baseTX-FDX, ");
}
} else {
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, sc->mii_inst),
E1000_CR_SPEED_1000 | E1000_CR_FULL_DUPLEX);
printf("1000baseSX-FDX, ");
}
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst), 0);
printf("auto\n");
#undef ADD
MIIBUS_MEDIAINIT(sc->mii_dev);
return (0);
}
static void
e1000phy_reset(struct mii_softc *sc)
{
struct e1000phy_softc *esc;
uint16_t reg, page;
esc = (struct e1000phy_softc *)sc;
reg = PHY_READ(sc, E1000_SCR);
if ((sc->mii_flags & MIIF_HAVEFIBER) != 0) {
reg &= ~E1000_SCR_AUTO_X_MODE;
PHY_WRITE(sc, E1000_SCR, reg);
if (esc->mii_model == MII_MODEL_MARVELL_E1112) {
/* Select 1000BASE-X only mode. */
page = PHY_READ(sc, E1000_EADR);
PHY_WRITE(sc, E1000_EADR, 2);
reg = PHY_READ(sc, E1000_SCR);
reg &= ~E1000_SCR_MODE_MASK;
reg |= E1000_SCR_MODE_1000BX;
PHY_WRITE(sc, E1000_SCR, reg);
PHY_WRITE(sc, E1000_EADR, page);
}
} else {
switch (esc->mii_model) {
case MII_MODEL_MARVELL_E1111:
case MII_MODEL_MARVELL_E1112:
case MII_MODEL_MARVELL_E1116:
case MII_MODEL_MARVELL_E1118:
case MII_MODEL_MARVELL_E1149:
/* Disable energy detect mode. */
reg &= ~E1000_SCR_EN_DETECT_MASK;
reg |= E1000_SCR_AUTO_X_MODE;
if (esc->mii_model == MII_MODEL_MARVELL_E1116)
reg &= ~E1000_SCR_POWER_DOWN;
break;
case MII_MODEL_MARVELL_E3082:
reg |= (E1000_SCR_AUTO_X_MODE >> 1);
break;
default:
reg &= ~E1000_SCR_AUTO_X_MODE;
break;
}
/* Enable CRS on TX. */
reg |= E1000_SCR_ASSERT_CRS_ON_TX;
/* Auto correction for reversed cable polarity. */
reg &= ~E1000_SCR_POLARITY_REVERSAL;
PHY_WRITE(sc, E1000_SCR, reg);
if (esc->mii_model == MII_MODEL_MARVELL_E1116) {
PHY_WRITE(sc, E1000_EADR, 2);
reg = PHY_READ(sc, E1000_SCR);
reg |= E1000_SCR_RGMII_POWER_UP;
PHY_WRITE(sc, E1000_SCR, reg);
PHY_WRITE(sc, E1000_EADR, 0);
}
}
switch (MII_MODEL(esc->mii_model)) {
case MII_MODEL_MARVELL_E3082:
case MII_MODEL_MARVELL_E1112:
case MII_MODEL_MARVELL_E1116:
case MII_MODEL_MARVELL_E1118:
case MII_MODEL_MARVELL_E1149:
break;
default:
/* Force TX_CLK to 25MHz clock. */
reg = PHY_READ(sc, E1000_ESCR);
reg |= E1000_ESCR_TX_CLK_25;
PHY_WRITE(sc, E1000_ESCR, reg);
break;
}
/* Reset the PHY so all changes take effect. */
reg = PHY_READ(sc, E1000_CR);
reg |= E1000_CR_RESET;
PHY_WRITE(sc, E1000_CR, reg);
}
static int
e1000phy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
{
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
struct e1000phy_softc *esc = (struct e1000phy_softc *)sc;
uint16_t speed, gig;
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, E1000_CR);
PHY_WRITE(sc, E1000_CR, reg | E1000_CR_ISOLATE);
return (0);
}
/*
* If the interface is not up, don't do anything.
*/
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
break;
if (IFM_SUBTYPE(ife->ifm_media) == IFM_AUTO) {
e1000phy_mii_phy_auto(esc);
break;
}
speed = 0;
switch (IFM_SUBTYPE(ife->ifm_media)) {
case IFM_1000_T:
if (esc->mii_model == MII_MODEL_MARVELL_E3082)
return (EINVAL);
speed = E1000_CR_SPEED_1000;
break;
case IFM_1000_SX:
if (esc->mii_model == MII_MODEL_MARVELL_E3082)
return (EINVAL);
speed = E1000_CR_SPEED_1000;
break;
case IFM_100_TX:
speed = E1000_CR_SPEED_100;
break;
case IFM_10_T:
speed = E1000_CR_SPEED_10;
break;
case IFM_NONE:
reg = PHY_READ(sc, E1000_CR);
PHY_WRITE(sc, E1000_CR,
reg | E1000_CR_ISOLATE | E1000_CR_POWER_DOWN);
goto done;
default:
return (EINVAL);
}
if (((ife->ifm_media & IFM_GMASK) & IFM_FDX) != 0) {
speed |= E1000_CR_FULL_DUPLEX;
gig = E1000_1GCR_1000T_FD;
} else
gig = E1000_1GCR_1000T;
reg = PHY_READ(sc, E1000_CR);
reg &= ~E1000_CR_AUTO_NEG_ENABLE;
PHY_WRITE(sc, E1000_CR, reg | E1000_CR_RESET);
/*
* 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 (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T ||
(IFM_SUBTYPE(ife->ifm_media) == IFM_1000_SX)) {
if ((mii->mii_ifp->if_flags & IFF_LINK0))
PHY_WRITE(sc, E1000_1GCR, gig |
E1000_1GCR_MS_ENABLE | E1000_1GCR_MS_VALUE);
else
PHY_WRITE(sc, E1000_1GCR, gig |
E1000_1GCR_MS_ENABLE);
} else {
if (esc->mii_model != MII_MODEL_MARVELL_E3082)
PHY_WRITE(sc, E1000_1GCR, 0);
}
PHY_WRITE(sc, E1000_AR, E1000_AR_SELECTOR_FIELD);
PHY_WRITE(sc, E1000_CR, speed | E1000_CR_RESET);
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.
* Read the status register twice; BMSR_LINK is latch-low.
*/
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;
if (sc->mii_ticks <= sc->mii_anegticks)
return (0);
sc->mii_ticks = 0;
e1000phy_reset(sc);
e1000phy_mii_phy_auto(esc);
break;
}
/* Update the media status. */
e1000phy_status(sc);
/* Callback if something changed. */
mii_phy_update(sc, cmd);
return (0);
}
static void
e1000phy_status(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
int bmsr, bmcr, esr, gsr, ssr, isr, ar, lpar;
mii->mii_media_status = IFM_AVALID;
mii->mii_media_active = IFM_ETHER;
bmsr = PHY_READ(sc, E1000_SR) | PHY_READ(sc, E1000_SR);
esr = PHY_READ(sc, E1000_ESR);
bmcr = PHY_READ(sc, E1000_CR);
ssr = PHY_READ(sc, E1000_SSR);
isr = PHY_READ(sc, E1000_ISR);
ar = PHY_READ(sc, E1000_AR);
lpar = PHY_READ(sc, E1000_LPAR);
if (bmsr & E1000_SR_LINK_STATUS)
mii->mii_media_status |= IFM_ACTIVE;
if (bmcr & E1000_CR_LOOPBACK)
mii->mii_media_active |= IFM_LOOP;
if ((((bmcr & E1000_CR_AUTO_NEG_ENABLE) != 0) &&
((bmsr & E1000_SR_AUTO_NEG_COMPLETE) == 0)) ||
((ssr & E1000_SSR_LINK) == 0) ||
((ssr & E1000_SSR_SPD_DPLX_RESOLVED) == 0)) {
/* Erg, still trying, I guess... */
mii->mii_media_active |= IFM_NONE;
return;
}
if ((sc->mii_flags & MIIF_HAVEFIBER) == 0) {
if (ssr & E1000_SSR_1000MBS)
mii->mii_media_active |= IFM_1000_T;
else if (ssr & E1000_SSR_100MBS)
mii->mii_media_active |= IFM_100_TX;
else
mii->mii_media_active |= IFM_10_T;
} else {
if (ssr & E1000_SSR_1000MBS)
mii->mii_media_active |= IFM_1000_SX;
}
if (ssr & E1000_SSR_DUPLEX)
mii->mii_media_active |= IFM_FDX;
else
mii->mii_media_active |= IFM_HDX;
if ((sc->mii_flags & MIIF_HAVEFIBER) == 0) {
/* FLAG0==rx-flow-control FLAG1==tx-flow-control */
if ((ar & E1000_AR_PAUSE) && (lpar & E1000_LPAR_PAUSE)) {
mii->mii_media_active |= IFM_FLAG0 | IFM_FLAG1;
} else if (!(ar & E1000_AR_PAUSE) && (ar & E1000_AR_ASM_DIR) &&
(lpar & E1000_LPAR_PAUSE) && (lpar & E1000_LPAR_ASM_DIR)) {
mii->mii_media_active |= IFM_FLAG1;
} else if ((ar & E1000_AR_PAUSE) && (ar & E1000_AR_ASM_DIR) &&
!(lpar & E1000_LPAR_PAUSE) && (lpar & E1000_LPAR_ASM_DIR)) {
mii->mii_media_active |= IFM_FLAG0;
}
}
/* FLAG2 : local PHY resolved to MASTER */
if ((IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) ||
(IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX)) {
PHY_READ(sc, E1000_1GSR);
gsr = PHY_READ(sc, E1000_1GSR);
if ((gsr & E1000_1GSR_MS_CONFIG_RES) != 0)
mii->mii_media_active |= IFM_FLAG2;
}
}
static int
e1000phy_mii_phy_auto(struct e1000phy_softc *esc)
{
struct mii_softc *sc;
sc = &esc->mii_sc;
if ((sc->mii_flags & MIIF_HAVEFIBER) == 0)
PHY_WRITE(sc, E1000_AR, E1000_AR_10T | E1000_AR_10T_FD |
E1000_AR_100TX | E1000_AR_100TX_FD |
E1000_AR_PAUSE | E1000_AR_ASM_DIR);
else
PHY_WRITE(sc, E1000_AR, E1000_FA_1000X_FD | E1000_FA_1000X |
E1000_FA_SYM_PAUSE | E1000_FA_ASYM_PAUSE);
if (esc->mii_model != MII_MODEL_MARVELL_E3082)
PHY_WRITE(sc, E1000_1GCR,
E1000_1GCR_1000T_FD | E1000_1GCR_1000T);
PHY_WRITE(sc, E1000_CR,
E1000_CR_AUTO_NEG_ENABLE | E1000_CR_RESTART_AUTO_NEG);
return (EJUSTRETURN);
}
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