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freebsd-dev/sys/dev/mii/e1000phy.c
Pyun YongHyeon 44d9075392 Backout r193289. r193289 restored page select bits to previous 
value instead of blindly resetting it to 0. However, it seems page
select bits of some 88E1116 PHY is initialized to invalid one such
that restoring page select bits after programming broke MII
register access. The correct solution would be reset page select
bits to 0 in PHY attach stage but it would require more testing.
Since we're in BETA stage such a change would be dangerous so just
back it out.
This change should fix nfe(4) breakage on NVIDIA MCP55.

Reported by:	Ryan Rogers < webmaster <> doghouserepair dot com >
		Sam Fourman Jr. < sfourman <> gmail dot com >
Tested by:	Ryan Rogers < webmaster <> doghouserepair dot com >
		Sam Fourman Jr. < sfourman <> gmail dot com >
Approved by:	re (kib)
2009-08-18 20:20:15 +00:00

546 lines
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/*-
* 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(MARVELL, E3016),
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;
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;
mii->mii_instance++;
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;
}
e1000phy_reset(sc);
sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
if (sc->mii_capabilities & BMSR_EXTSTAT)
sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
device_printf(dev, " ");
mii_phy_add_media(sc);
printf("\n");
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;
reg |= E1000_SCR_ASSERT_CRS_ON_TX;
break;
case MII_MODEL_MARVELL_E3082:
reg |= (E1000_SCR_AUTO_X_MODE >> 1);
reg |= E1000_SCR_ASSERT_CRS_ON_TX;
break;
case MII_MODEL_MARVELL_E3016:
reg |= E1000_SCR_AUTO_MDIX;
reg &= ~(E1000_SCR_EN_DETECT |
E1000_SCR_SCRAMBLER_DISABLE);
reg |= E1000_SCR_LPNP;
/* XXX Enable class A driver for Yukon FE+ A0. */
PHY_WRITE(sc, 0x1C, PHY_READ(sc, 0x1C) | 0x0001);
break;
default:
reg &= ~E1000_SCR_AUTO_X_MODE;
reg |= E1000_SCR_ASSERT_CRS_ON_TX;
break;
}
if (esc->mii_model != MII_MODEL_MARVELL_E3016) {
/* 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 ||
esc->mii_model == MII_MODEL_MARVELL_E1149) {
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_E1118:
break;
case MII_MODEL_MARVELL_E1116:
case MII_MODEL_MARVELL_E1149:
page = PHY_READ(sc, E1000_EADR);
/* Select page 3, LED control register. */
PHY_WRITE(sc, E1000_EADR, 3);
PHY_WRITE(sc, E1000_SCR,
E1000_SCR_LED_LOS(1) | /* Link/Act */
E1000_SCR_LED_INIT(8) | /* 10Mbps */
E1000_SCR_LED_STAT1(7) | /* 100Mbps */
E1000_SCR_LED_STAT0(7)); /* 1000Mbps */
/* Set blink rate. */
PHY_WRITE(sc, E1000_IER, E1000_PULSE_DUR(E1000_PULSE_170MS) |
E1000_BLINK_RATE(E1000_BLINK_84MS));
PHY_WRITE(sc, E1000_EADR, page);
break;
case MII_MODEL_MARVELL_E3016:
/* LED2 -> ACT, LED1 -> LINK, LED0 -> SPEED. */
PHY_WRITE(sc, 0x16, 0x0B << 8 | 0x05 << 4 | 0x04);
/* Integrated register calibration workaround. */
PHY_WRITE(sc, 0x1D, 17);
PHY_WRITE(sc, 0x1E, 0x3F60);
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 ((sc->mii_extcapabilities &
(EXTSR_1000TFDX | EXTSR_1000THDX)) == 0)
return (EINVAL);
speed = E1000_CR_SPEED_1000;
break;
case IFM_1000_SX:
if ((sc->mii_extcapabilities &
(EXTSR_1000XFDX | EXTSR_1000XHDX)) == 0)
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 ((sc->mii_extcapabilities &
(EXTSR_1000TFDX | EXTSR_1000THDX)) != 0)
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)
break;
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 bmcr, bmsr, gsr, ssr, 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);
bmcr = PHY_READ(sc, E1000_CR);
ssr = PHY_READ(sc, E1000_SSR);
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 &&
(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) {
switch (ssr & E1000_SSR_SPEED) {
case E1000_SSR_1000MBS:
mii->mii_media_active |= IFM_1000_T;
break;
case E1000_SSR_100MBS:
mii->mii_media_active |= IFM_100_TX;
break;
case E1000_SSR_10MBS:
mii->mii_media_active |= IFM_10_T;
break;
default:
mii->mii_media_active |= IFM_NONE;
return;
}
} 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) {
ar = PHY_READ(sc, E1000_AR);
lpar = PHY_READ(sc, E1000_LPAR);
/* 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;
uint16_t reg;
sc = &esc->mii_sc;
if ((sc->mii_flags & MIIF_HAVEFIBER) == 0) {
reg = PHY_READ(sc, E1000_AR);
reg |= E1000_AR_10T | E1000_AR_10T_FD |
E1000_AR_100TX | E1000_AR_100TX_FD |
E1000_AR_PAUSE | E1000_AR_ASM_DIR;
PHY_WRITE(sc, E1000_AR, reg | E1000_AR_SELECTOR_FIELD);
} else
PHY_WRITE(sc, E1000_AR, E1000_FA_1000X_FD | E1000_FA_1000X |
E1000_FA_SYM_PAUSE | E1000_FA_ASYM_PAUSE);
if ((sc->mii_extcapabilities & (EXTSR_1000TFDX | EXTSR_1000THDX)) != 0)
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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