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NetBSD/sys/dev/mii/mii_physubr.c

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/* $NetBSD: mii_physubr.c,v 1.103 2023/05/22 02:12:13 msaitoh Exp $ */
/*-
* Copyright (c) 1998, 1999, 2000, 2001 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.
*/
/*
* Subroutines common to all PHYs.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: mii_physubr.c,v 1.103 2023/05/22 02:12:13 msaitoh Exp $");
#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/errno.h>
#include <sys/module.h>
#include <sys/module_hook.h>
#include <sys/proc.h>
#include <net/if.h>
#include <net/if_media.h>
#include <net/route.h>
#include <dev/dev_verbose.h>
#include <dev/mii/mii.h>
#include <dev/mii/miidevs.h>
#include <dev/mii/miivar.h>
DEV_VERBOSE_DEFINE(mii);
const char *
mii_get_descr(char *descr, size_t len, uint32_t oui, uint32_t model)
{
char temp[MII_MAX_DESCR_LEN];
mii_load_verbose();
if (miiverbose_loaded) {
if (mii_findvendor(temp, sizeof(temp), oui) == NULL) {
descr[0] = '\0';
return NULL;
}
strlcpy(descr, temp, len);
strlcat(descr, " ", len);
if (mii_findproduct(temp, sizeof(temp), oui, model) == NULL) {
descr[0] = '\0';
return NULL;
}
strlcat(descr, temp, len);
return descr;
}
snprintf(descr, len, "OUI 0x%06x model 0x%04x", oui, model);
return NULL;
}
static void mii_phy_statusmsg(struct mii_softc *);
/*
* Media to register setting conversion table. Order matters.
*/
static const struct mii_media mii_media_table[MII_NMEDIA] = {
/* None */
{ BMCR_ISO, ANAR_CSMA,
0, },
/* 10baseT */
{ BMCR_S10, ANAR_CSMA | ANAR_10,
0, },
/* 10baseT-FDX */
{ BMCR_S10|BMCR_FDX, ANAR_CSMA | ANAR_10_FD,
0, },
/* 100baseT4 */
{ BMCR_S100, ANAR_CSMA | ANAR_T4,
0, },
/* 100baseTX */
{ BMCR_S100, ANAR_CSMA | ANAR_TX,
0, },
/* 100baseTX-FDX */
{ BMCR_S100|BMCR_FDX, ANAR_CSMA | ANAR_TX_FD,
0, },
/* 1000baseX */
{ BMCR_S1000, ANAR_CSMA,
0, },
/* 1000baseX-FDX */
{ BMCR_S1000|BMCR_FDX, ANAR_CSMA,
0, },
/* 1000baseT */
{ BMCR_S1000, ANAR_CSMA,
GTCR_ADV_1000THDX },
/* 1000baseT-FDX */
{ BMCR_S1000, ANAR_CSMA,
GTCR_ADV_1000TFDX },
};
static void mii_phy_auto_timeout(void *);
static void mii_phy_auto_timeout_locked(struct mii_softc *);
void
mii_phy_setmedia(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
u_int subtype;
uint16_t bmcr, anar, gtcr;
KASSERT(mii_locked(mii));
subtype = IFM_SUBTYPE(ife->ifm_media);
if ((subtype == IFM_AUTO) || (subtype == IFM_1000_T)) {
(void) mii_phy_auto(sc);
return;
}
/* Table index is stored in the media entry. */
#ifdef DIAGNOSTIC
if (/* ife->ifm_data < 0 || */ ife->ifm_data >= MII_NMEDIA)
panic("mii_phy_setmedia");
#endif
anar = mii_media_table[ife->ifm_data].mm_anar;
bmcr = mii_media_table[ife->ifm_data].mm_bmcr;
gtcr = mii_media_table[ife->ifm_data].mm_gtcr;
if (mii->mii_media.ifm_media & IFM_ETH_MASTER) {
switch (subtype) {
case IFM_1000_T:
gtcr |= GTCR_MAN_MS | GTCR_ADV_MS;
break;
default:
panic("mii_phy_setmedia: MASTER on wrong media");
}
}
if (mii->mii_media.ifm_media & IFM_FLOW) {
if (sc->mii_flags & MIIF_IS_1000X)
anar |= ANAR_X_PAUSE_SYM | ANAR_X_PAUSE_ASYM;
else {
anar |= ANAR_FC;
/* XXX Only 1000BASE-T has PAUSE_ASYM? */
if ((sc->mii_flags & MIIF_HAVE_GTCR) &&
(sc->mii_extcapabilities &
(EXTSR_1000THDX | EXTSR_1000TFDX)))
anar |= ANAR_PAUSE_ASYM;
}
}
if (ife->ifm_media & IFM_LOOP)
bmcr |= BMCR_LOOP;
PHY_WRITE(sc, MII_ANAR, anar);
if (sc->mii_flags & MIIF_HAVE_GTCR)
PHY_WRITE(sc, MII_100T2CR, gtcr);
PHY_WRITE(sc, MII_BMCR, bmcr);
}
/* Setup autonegotiation and start it. */
int
mii_phy_auto(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
KASSERT(mii_locked(mii));
sc->mii_ticks = 0;
if ((sc->mii_flags & MIIF_DOINGAUTO) == 0) {
/*
* Check for 1000BASE-X. Autonegotiation is a bit
* different on such devices.
*/
if (sc->mii_flags & MIIF_IS_1000X) {
uint16_t anar = 0;
if (sc->mii_extcapabilities & EXTSR_1000XFDX)
anar |= ANAR_X_FD;
if (sc->mii_extcapabilities & EXTSR_1000XHDX)
anar |= ANAR_X_HD;
if (sc->mii_flags & MIIF_DOPAUSE) {
/* XXX Asymmetric vs. symmetric? */
anar |= ANLPAR_X_PAUSE_TOWARDS;
}
PHY_WRITE(sc, MII_ANAR, anar);
} else {
uint16_t anar;
anar = BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) |
ANAR_CSMA;
if (sc->mii_flags & MIIF_DOPAUSE) {
anar |= ANAR_FC;
/* XXX Only 1000BASE-T has PAUSE_ASYM? */
if ((sc->mii_flags & MIIF_HAVE_GTCR) &&
(sc->mii_extcapabilities &
(EXTSR_1000THDX | EXTSR_1000TFDX)))
anar |= ANAR_PAUSE_ASYM;
}
/*
* For 1000-base-T, autonegotiation must be enabled,
* but if we're not set to auto, only advertise
* 1000-base-T with the link partner.
*/
if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
anar &= ~(ANAR_T4 | ANAR_TX_FD | ANAR_TX |
ANAR_10_FD | ANAR_10);
}
PHY_WRITE(sc, MII_ANAR, anar);
if (sc->mii_flags & MIIF_HAVE_GTCR) {
uint16_t gtcr = 0;
if (sc->mii_extcapabilities & EXTSR_1000TFDX)
gtcr |= GTCR_ADV_1000TFDX;
if (sc->mii_extcapabilities & EXTSR_1000THDX)
gtcr |= GTCR_ADV_1000THDX;
PHY_WRITE(sc, MII_100T2CR, gtcr);
}
}
PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);
}
/*
* 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 (sc->mii_flags & MIIF_AUTOTSLEEP) {
ASSERT_SLEEPABLE();
sc->mii_flags |= MIIF_DOINGAUTO;
kpause("miiaut", false, hz >> 1, mii->mii_media.ifm_lock);
mii_phy_auto_timeout_locked(sc);
KASSERT((sc->mii_flags & MIIF_DOINGAUTO) == 0);
cv_broadcast(&sc->mii_nway_cv);
} else if ((sc->mii_flags & MIIF_DOINGAUTO) == 0) {
sc->mii_flags |= MIIF_DOINGAUTO;
callout_reset(&sc->mii_nway_ch, hz >> 1,
mii_phy_auto_timeout, sc);
}
return EJUSTRETURN;
}
/* Just restart autonegotiation without changing any setting */
int
mii_phy_auto_restart(struct mii_softc *sc)
{
uint16_t reg;
PHY_READ(sc, MII_BMCR, &reg);
reg |= BMCR_STARTNEG;
PHY_WRITE(sc, MII_BMCR, reg);
sc->mii_ticks = 0;
return EJUSTRETURN;
}
static void
mii_phy_auto_timeout_locked(struct mii_softc *sc)
{
KASSERT(mii_locked(sc->mii_pdata));
KASSERT(sc->mii_flags & MIIF_DOINGAUTO);
if (!device_is_active(sc->mii_dev))
return;
sc->mii_flags &= ~MIIF_DOINGAUTO;
/* Update the media status. */
(void) PHY_SERVICE(sc, sc->mii_pdata, MII_POLLSTAT);
}
static void
mii_phy_auto_timeout(void *arg)
{
struct mii_softc *sc = arg;
KASSERT((sc->mii_flags & MIIF_AUTOTSLEEP) == 0);
if (!device_is_active(sc->mii_dev))
return;
mii_lock(sc->mii_pdata);
mii_phy_auto_timeout_locked(sc);
mii_unlock(sc->mii_pdata);
}
int
mii_phy_tick(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
uint16_t reg;
KASSERT(mii_locked(mii));
/* Just bail now if the interface is down. */
if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
return EJUSTRETURN;
/*
* If we're not doing autonegotiation, we don't need to do any extra
* work here. However, we need to check the link status so we can
* generate an announcement by returning with 0 if the status changes.
*/
if ((IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) &&
(IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T)) {
/*
* Reset autonegotiation timer to 0 just to make sure
* the future autonegotiation start with 0.
*/
sc->mii_ticks = 0;
return 0;
}
/* Read the status register twice; BMSR_LINK is latch-low. */
PHY_READ(sc, MII_BMSR, &reg);
PHY_READ(sc, MII_BMSR, &reg);
if (reg & BMSR_LINK) {
/*
* Reset autonegotiation timer to 0 in case the link
* goes down in the next tick.
*/
sc->mii_ticks = 0;
/* See above. */
return 0;
}
/*
* mii_ticks == 0 means it's the first tick after changing the media or
* the link became down since the last tick (see above), so return with
* 0 to update the status.
*/
if (sc->mii_ticks++ == 0)
return 0;
/*
* Only retry autonegotiation every N seconds.
*/
KASSERT(sc->mii_anegticks != 0);
if (sc->mii_ticks < sc->mii_anegticks)
return EJUSTRETURN;
if (mii_phy_auto_restart(sc) == EJUSTRETURN)
return EJUSTRETURN;
/*
* Might need to generate a status message if autonegotiation
* failed.
*/
return 0;
}
void
mii_phy_reset(struct mii_softc *sc)
{
int i;
uint16_t reg;
KASSERT(mii_locked(sc->mii_pdata));
if (sc->mii_flags & MIIF_NOISOLATE)
reg = BMCR_RESET;
else
reg = BMCR_RESET | BMCR_ISO;
PHY_WRITE(sc, MII_BMCR, reg);
/* Wait another 500ms for it to complete. */
for (i = 0; i < 500; i++) {
PHY_READ(sc, MII_BMCR, &reg);
if ((reg & BMCR_RESET) == 0)
break;
delay(1000);
}
if (sc->mii_inst != 0 && ((sc->mii_flags & MIIF_NOISOLATE) == 0))
PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
}
void
mii_phy_down(struct mii_softc *sc)
{
KASSERT(mii_locked(sc->mii_pdata));
if (sc->mii_flags & MIIF_AUTOTSLEEP) {
while (sc->mii_flags & MIIF_DOINGAUTO) {
cv_wait(&sc->mii_nway_cv,
sc->mii_pdata->mii_media.ifm_lock);
}
} else {
if ((sc->mii_flags & MIIF_DOINGAUTO) != 0 &&
callout_halt(&sc->mii_nway_ch,
sc->mii_pdata->mii_media.ifm_lock) == 0) {
/*
* The callout was scheduled, and we prevented
* it from running before it expired, so we are
* now responsible for clearing the flag.
*/
sc->mii_flags &= ~MIIF_DOINGAUTO;
}
}
KASSERT((sc->mii_flags & MIIF_DOINGAUTO) == 0);
}
void
mii_phy_status(struct mii_softc *sc)
{
KASSERT(mii_locked(sc->mii_pdata));
PHY_STATUS(sc);
}
void
mii_phy_update(struct mii_softc *sc, int cmd)
{
struct mii_data *mii = sc->mii_pdata;
u_int mii_media_active;
int mii_media_status;
KASSERT(mii_locked(mii));
mii_media_active = mii->mii_media_active;
mii_media_status = mii->mii_media_status;
if (sc->mii_media_active != mii_media_active ||
sc->mii_media_status != mii_media_status ||
cmd == MII_MEDIACHG) {
mii_phy_statusmsg(sc);
(*mii->mii_statchg)(mii->mii_ifp);
sc->mii_media_active = mii_media_active;
sc->mii_media_status = mii_media_status;
}
}
static void
mii_phy_statusmsg(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
struct ifnet *ifp = mii->mii_ifp;
KASSERT(mii_locked(mii));
if (mii->mii_media_status & IFM_AVALID) {
if (mii->mii_media_status & IFM_ACTIVE)
if_link_state_change(ifp, LINK_STATE_UP);
else
if_link_state_change(ifp, LINK_STATE_DOWN);
} else
if_link_state_change(ifp, LINK_STATE_UNKNOWN);
/* XXX NET_MPSAFE */
ifp->if_baudrate = ifmedia_baudrate(mii->mii_media_active);
}
/*
* Initialize generic PHY media based on BMSR, called when a PHY is
* attached. We expect to be set up to print a comma-separated list
* of media names. Does not print a newline.
*/
void
mii_phy_add_media(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
device_t self = sc->mii_dev;
const char *sep = "";
int fdx = 0;
aprint_normal_dev(self, "");
if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0 &&
(sc->mii_extcapabilities & EXTSR_MEDIAMASK) == 0) {
aprint_error("no media present\n");
goto out;
}
/*
* Set the autonegotiation timer for 10/100 media. Gigabit media is
* handled below.
*/
mii_lock(mii);
sc->mii_anegticks = MII_ANEGTICKS;
mii_unlock(mii);
#define ADD(m, c) ifmedia_add(&mii->mii_media, (m), (c), NULL)
#define PRINT(n) aprint_normal("%s%s", sep, (n)); sep = ", "
/* This flag is static; no need to lock. */
if ((sc->mii_flags & MIIF_NOISOLATE) == 0)
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
MII_MEDIA_NONE);
/*
* There are different interpretations for the bits in
* HomePNA PHYs. And there is really only one media type
* that is supported. This flag is also static, and so
* no need to lock.
*/
if (sc->mii_flags & MIIF_IS_HPNA) {
if (sc->mii_capabilities & BMSR_10THDX) {
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0,
sc->mii_inst),
MII_MEDIA_10_T);
PRINT("HomePNA1");
}
goto out;
}
if (sc->mii_capabilities & BMSR_10THDX) {
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, sc->mii_inst),
MII_MEDIA_10_T);
PRINT("10baseT");
}
if (sc->mii_capabilities & BMSR_10TFDX) {
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, sc->mii_inst),
MII_MEDIA_10_T_FDX);
PRINT("10baseT-FDX");
fdx = 1;
}
if (sc->mii_capabilities & BMSR_100TXHDX) {
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, 0, sc->mii_inst),
MII_MEDIA_100_TX);
PRINT("100baseTX");
}
if (sc->mii_capabilities & BMSR_100TXFDX) {
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_FDX, sc->mii_inst),
MII_MEDIA_100_TX_FDX);
PRINT("100baseTX-FDX");
fdx = 1;
}
if (sc->mii_capabilities & BMSR_100T4) {
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_T4, 0, sc->mii_inst),
MII_MEDIA_100_T4);
PRINT("100baseT4");
}
if (sc->mii_extcapabilities & EXTSR_MEDIAMASK) {
/*
* XXX Right now only handle 1000SX and 1000TX. Need
* XXX to handle 1000LX and 1000CX some how.
*
* Note since it can take 5 seconds to auto-negotiate
* a gigabit link, we make anegticks 10 seconds for
* all the gigabit media types.
*/
if (sc->mii_extcapabilities & EXTSR_1000XHDX) {
mii_lock(mii);
sc->mii_anegticks = MII_ANEGTICKS_GIGE;
sc->mii_flags |= MIIF_IS_1000X;
mii_unlock(mii);
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0,
sc->mii_inst), MII_MEDIA_1000_X);
PRINT("1000baseSX");
}
if (sc->mii_extcapabilities & EXTSR_1000XFDX) {
mii_lock(mii);
sc->mii_anegticks = MII_ANEGTICKS_GIGE;
sc->mii_flags |= MIIF_IS_1000X;
mii_unlock(mii);
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX,
sc->mii_inst), MII_MEDIA_1000_X_FDX);
PRINT("1000baseSX-FDX");
fdx = 1;
}
/*
* 1000baseT media needs to be able to manipulate
* master/slave mode. We set IFM_ETH_MASTER in
* the "don't care mask" and filter it out when
* the media is set.
*
* All 1000baseT PHYs have a 1000baseT control register.
*/
if (sc->mii_extcapabilities & EXTSR_1000THDX) {
mii_lock(mii);
sc->mii_anegticks = MII_ANEGTICKS_GIGE;
sc->mii_flags |= MIIF_HAVE_GTCR;
mii->mii_media.ifm_mask |= IFM_ETH_MASTER;
mii_unlock(mii);
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, 0,
sc->mii_inst), MII_MEDIA_1000_T);
PRINT("1000baseT");
}
if (sc->mii_extcapabilities & EXTSR_1000TFDX) {
mii_lock(mii);
sc->mii_anegticks = MII_ANEGTICKS_GIGE;
sc->mii_flags |= MIIF_HAVE_GTCR;
mii->mii_media.ifm_mask |= IFM_ETH_MASTER;
mii_unlock(mii);
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_T, IFM_FDX,
sc->mii_inst), MII_MEDIA_1000_T_FDX);
PRINT("1000baseT-FDX");
fdx = 1;
}
}
if (sc->mii_capabilities & BMSR_ANEG) {
ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, sc->mii_inst),
MII_NMEDIA); /* intentionally invalid index */
PRINT("auto");
}
#undef ADD
#undef PRINT
/* This flag is static; no need to lock. */
if (fdx != 0 && (sc->mii_flags & MIIF_DOPAUSE)) {
mii_lock(mii);
mii->mii_media.ifm_mask |= IFM_ETH_FMASK;
mii_unlock(mii);
}
out:
aprint_normal("\n");
if (!pmf_device_register(self, NULL, mii_phy_resume)) {
aprint_error_dev(self, "couldn't establish power handler\n");
}
}
void
mii_phy_delete_media(struct mii_softc *sc)
{
struct mii_data *mii = sc->mii_pdata;
ifmedia_delete_instance(&mii->mii_media, sc->mii_inst);
}
int
mii_phy_activate(device_t self, enum devact act)
{
switch (act) {
case DVACT_DEACTIVATE:
/* XXX Invalidate parent's media setting? */
return 0;
default:
return EOPNOTSUPP;
}
}
/* ARGSUSED1 */
int
mii_phy_detach(device_t self, int flags)
{
struct mii_softc *sc = device_private(self);
/* No mii_lock because mii_flags should be stable by now. */
KASSERT((sc->mii_flags & MIIF_DOINGAUTO) == 0);
if (sc->mii_flags & MIIF_AUTOTSLEEP)
cv_destroy(&sc->mii_nway_cv);
else
callout_destroy(&sc->mii_nway_ch);
mii_phy_delete_media(sc);
return 0;
}
const struct mii_phydesc *
mii_phy_match(const struct mii_attach_args *ma, const struct mii_phydesc *mpd)
{
for (; mpd->mpd_oui != 0; mpd++) {
if (MII_OUI(ma->mii_id1, ma->mii_id2) == mpd->mpd_oui &&
MII_MODEL(ma->mii_id2) == mpd->mpd_model)
return mpd;
}
return NULL;
}
/*
* Return the flow control status flag from MII_ANAR & MII_ANLPAR.
*/
u_int
mii_phy_flowstatus(struct mii_softc *sc)
{
uint16_t anar, anlpar;
KASSERT(mii_locked(sc->mii_pdata));
if ((sc->mii_flags & MIIF_DOPAUSE) == 0)
return 0;
PHY_READ(sc, MII_ANAR, &anar);
PHY_READ(sc, MII_ANLPAR, &anlpar);
/* For 1000baseX, the bits are in a different location. */
if (sc->mii_flags & MIIF_IS_1000X) {
anar <<= 3;
anlpar <<= 3;
}
if ((anar & ANAR_PAUSE_SYM) & (anlpar & ANLPAR_PAUSE_SYM))
return (IFM_FLOW | IFM_ETH_TXPAUSE | IFM_ETH_RXPAUSE);
if ((anar & ANAR_PAUSE_SYM) == 0) {
if ((anar & ANAR_PAUSE_ASYM) &&
((anlpar & ANLPAR_PAUSE_TOWARDS) == ANLPAR_PAUSE_TOWARDS))
return (IFM_FLOW | IFM_ETH_TXPAUSE);
else
return 0;
}
if ((anar & ANAR_PAUSE_ASYM) == 0) {
if (anlpar & ANLPAR_PAUSE_SYM)
return (IFM_FLOW | IFM_ETH_TXPAUSE | IFM_ETH_RXPAUSE);
else
return 0;
}
switch ((anlpar & ANLPAR_PAUSE_TOWARDS)) {
case ANLPAR_PAUSE_NONE:
return 0;
case ANLPAR_PAUSE_ASYM:
return (IFM_FLOW | IFM_ETH_RXPAUSE);
default:
return (IFM_FLOW | IFM_ETH_RXPAUSE | IFM_ETH_TXPAUSE);
}
/* NOTREACHED */
}
bool
mii_phy_resume(device_t dv, const pmf_qual_t *qual)
{
struct mii_softc *sc = device_private(dv);
mii_lock(sc->mii_pdata);
PHY_RESET(sc);
bool rv = PHY_SERVICE(sc, sc->mii_pdata, MII_MEDIACHG) == 0;
mii_unlock(sc->mii_pdata);
return rv;
}
/*
* Given an ifmedia_entry, return the corresponding ANAR value.
*/
uint16_t
mii_anar(struct ifmedia_entry *ife)
{
#ifdef DIAGNOSTIC
if (ife->ifm_data >= MII_NMEDIA)
panic("mii_anar");
#endif
return mii_media_table[ife->ifm_data].mm_anar;
}
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